Regulation of assimilate import into sink organs: Update on molecular drivers of sink strength

Frontiers in Plant Science

Volumn 4, Issue JUN, 2013, Pages

  Bihmidine, Saadia ^a   Hunter III, Charles T ^b   Johns, Christine E ^b   Koch, Karen E ^b   Braun, David M ^a  

^a UNIVERSITY OF MISSOURI   (United States)

^b UNIVERSITY OF FLORIDA   (United States)

Author keywords

Carbohydrate partitioning; Kernel; Maize; Sink strength; Sorghum; Stem; Sucrose; Sugarcane

Indexed keywords

EID: 84885880132     PISSN: None     EISSN: 1664462X     Source Type: Journal    
DOI: 10.3389/fpls.2013.00177     Document Type: Review

References (190)

1. Acreche, M. M., and Slafer, G. A. (2006). Grain weight response to increases in number of grains in wheat in a Mediterranean area. Field Crops Res. 98, 52-59. doi: 10.1016/j.fcr.2005.12.005
2. Ainsworth, E. A., and Bush, D. R. (2011). Carbohydrate export from the leaf: a highly regulated process and target to enhance photosynthesis and productivity. Plant Physiol. 155, 64-69. doi: 10.1104/pp.110.167684
3. Aitken, K. S., Hermann, S., Karno, K., Bonnett, G. D., McIntyre, L. C., and Jackson, P. A. (2008). Genetic control of yield related stalk traits in sugarcane. Theor. Appl. Genet. 117, 1191-1203. doi: 10.1007/s00122-008-0856-6
4. Ali, M. L., Rajewski, J. F., Baenziger, P. S., Gill, K. S., Eskridge, K. M., and Dweikat, I. (2008). Assessment of genetic diversity and relationship among a collection of US sweet sorghum germplasm by SSR markers. Mol. Breed. 21, 497-509. doi: 10.1007/s11032-007-9149-z
5. Almodares, A., and Hadi, M. R. (2009). Production of bioethanol from sweet sorghum: a review. Afr. J. Agric. Res. 4, 772-780.
6. Almodares, A., Taheri, R., and Adeli, S. (2008). Stalk yield and carbohydrate composition of sweet Sorghum(Sorghum bicolor (L.) Moench) cultivars and lines at different growth stages. Malays. Appl. Biol. 37, 31-36.
7. Andersen, C. P. (2003). Source-sink balance and carbon allocation below ground in plants exposed to ozone. New Phytol. 157, 213-228. doi: 10.1046/j.1469-8137.2003.00674.x
8. Andersen, M. N., Asch, F., Wu, Y., Jensen, C. R., Naested, H., Mogensen, V. O., et al. (2002). Soluble invertase expression is an early target of drought stress during the critical, abortion-sensitive phase of young ovary development in maize. Plant Physiol. 130, 591-604. doi: 10.1104/pp.005637
9. Aoki, N., Hirose, T., and Furbank, R. T. (2012). "Sucrose transport in higher plants: from source to sink, " in Photosynthesis: Plastid Biology, Energy Conversion, and Carbon Assimilation, Advances in Photosynthesis and Respiration, eds J. J. Eaton-Rye, B. C. Tripathy, and T. D. Sharkey (Dordecht: Springer), 703-729.
10. Aoki, N., Hirose, T., Takahashi, S., Ono, K., Ishimaru, K., and Ohsugi, R. (1999). Molecular cloning and expression analysis of a gene for a sucrose transporter in maize (Zea mays L.). Plant Cell Physiol. 40, 1072-1078. doi: 10.1093/oxfordjournals.pcp.a029489
11. Aranjuelo, I., Cabrera-Bosquet, L., Morcuende, R., Avice, J. C., Nogués, S., Araus, J. L., et al. (2011). Does ear C sink strength contribute to overcoming photosynthetic acclimation of wheat plants exposed to elevated CO2? J. Exp. Bot. 62, 3957-3969. doi: 10.1093/jxb/err095
12. Artschwager, E. (1948). Anatomy and morphology of the vegetative organs of Sorghum vulgare. US Department of Agriculture, Washington, D.C., Technical Bulletin No. 957.
13. Ayre, B. G. (2011). Membrane-transport systems for sucrose in relation to whole-plant carbon partitioning. Mol. Plant 4, 377-394. doi: 10.1093/mp/ssr014
14. Baker, R. F., Leach, K. A., and Braun, D. M. (2012). SWEET as sugar: new sucrose effluxers in plants. Mol. Plant 5, 766-768. doi: 10.1093/mp/SSS054
15. Barazesh, S., Nowbakht, C., and McSteen, P. (2009). sparse inflorescence1, barren inflorescence1 and barren stalk1 promote cell elongation in maize inflorescence development. Genetics 182, 403-406. doi: 10.1534/genetics.108.099390
16. Baroja-Fernández, E., Muñoz, F. J., Montero, M., Etxeberria, E., Sesma, M. T., Ovecka, M., et al. (2009). Enhancing sucrose synthase activity in transgenic potato (Solanum tuberosum L.) tubers results in increased levels of starch, ADPglucose and UDPglucose and total yield. Plant Cell Physiol. 50, 1651-1662. doi: 10.1093/pcp/pcp108
17. Basnayake, S. W. V., Morgan, T. C., Wu, L., and Birch, R. G. (2012). Field performance of transgenic sugarcane expressing isomaltulose synthase. Plant Biotechnol. J. 10, 217-225. doi: 10.1111/j.1467-7652.2011.00655.x
18. Batta, S. K., and Singh, R. (1986). Sucrose metabolism in sugarcane grown under varying climatic conditions: synthesis and storage of sucrose in relation to the activities of sucrose synthase, sucrose-phosphate synthase and invertase. Phytochemistry 25, 2431-2437. doi: 10.1016/S0031-9422(00)84484-2
19. Boisnard-Lorig, C., Colon-Carmona, A., Bauch, M., Hodge, S., Doerner, P., Bancharel, E., et al. (2001). Dynamic analyses of the expression of the HISTONE{proportion}YFP fusion protein in Arabidopsis show that syncytial endosperm is divided in mitotic domains. Plant Cell 13, 495-509.
20. Borrás, L., Slafer, G. A., and Otegui, M. E. (2004). Seed dry weight response to source-sink manipulations in wheat, maize and soybean: a quantitative reappraisal. Field Crops Res. 86, 131-146.
21. Botha, F. C., and Black, K. G. (2000). Sucrose phosphate synthase and sucrose synthase activity during maturation of internodal tissue in sugarcane. Funct. Plant Biol. 27, 81-85. doi: 10.1071/PP99098
22. Braun, D. M. (2012). SWEET! The pathway is complete. Science 335, 173-174. doi: 10.1126/science.1216828
23. Braun, D. M., and Slewinski, T. L. (2009). Genetic control of carbon partitioning in grasses: roles of sucrose transporters and tie-dyed loci in phloem loading. Plant Physiol. 149, 71-81. doi: 10.1104/pp.108.129049
24. Buckeridge, M. S. (2010). Seed cell wall storage polysaccharides: models to understand cell wall biosynthesis and degradation. Plant Physiol. 154, 1017-1023. doi: 10.1104/pp.110.158642
25. Calviño, M., and Messing, J. (2012). Sweet sorghum as a model system for bioenergy crops. Curr. Opin. Biotechnol. 23, 323-329. doi: 10.1016/j.copbio.2011.12.002
26. Calviño, M., Miclaus, M., Bruggmann, R., and Messing, J. (2009). Molecular markers for sweet sorghum based on microarray expression data. Rice 2, 129-142.
27. Chen, L.-Q., Hou, B.-H., Lalonde, S., Takanaga, H., Hartung, M. L., Qu, X.-Q., et al. (2010). Sugar transporters for intercellular exchange and nutrition of pathogens. Nature 468, 527-532. doi: 10.1038/nature09606
28. Chen, L. Q., Qu, X. Q., Hou, B. H., Sosso, D., Osorio, S., Fernie, A. R., et al. (2012). Sucrose efflux mediated by SWEET proteins as a key step for phloem transport. Science 335, 207-211. doi: 10.1126/science.1213351
29. Chu, Z., Yuan, M., Yao, J., Ge, X., Yuan, B., Xu, C., et al. (2006). Promoter mutations of an essential gene for pollen development result in disease resistance in rice. Genes Dev. 20, 1250-1255. doi: 10.1101/gad.1416306
30. Collins, C., Dewitte, W., and Murray, J. A. (2012). D-type cyclins control cell division and developmental rate during Arabidopsis seed development. J. Exp. Bot. 63, 3571-3586. doi: 10.1093/jxb/ers015
31. Coruzzi, G., and Bush, D. R. (2001). Nitrogen and carbon nutrient and metabolite signaling in plants. Plant Physiol. 125, 61-64. doi: 10.1104/pp.125.1.61
32. Cosgrove, D. J. (2005). Growth of the plant cell wall. Nat. Rev. Mol. Cell Biol. 6, 850-861. doi: 10.1038/nrm1746
33. Creech, R. G. (1965). Genetic control of carbohydrate synthesis in maize endosperm. Genetics 52, 1175.
34. Creste, S., Accoroni, K. G., Pinto, L., Vencovsky, R., Gimenes, M., Xavier, M., et al. (2010). Genetic variability among sugarcane genotypes based on polymorphisms in sucrose metabolism and drought tolerance genes. Euphytica 172, 435-446. doi: 10.1007/s10681-009-0078-2
35. Echeverría, E. (2000). Vesicle-mediated solute transport between the vacuole and the plasma membrane. Plant Physiol. 123, 1217-1226.
36. Edwards, M., Dea, I. M., Bulpin, P., and Reid, J. S. G. (1985). Xyloglucan (amyloid) mobilisation in the cotyledons of Tropaeolum majus L. seeds following germination. Planta 163, 133-140. doi: 10.1007/BF00395907
37. Eom, J.-S., Cho, J.-I., Reinders, A., Lee, S.-W., Yoo, Y., Tuan, P. Q., et al. (2011). Impaired function of the tonoplast-localized sucrose transporter in rice, OsSUT2, limits the transport of vacuolar reserve sucrose and affects plant growth. Plant Physiol. 157, 109-119. doi: 10.1104/pp.111.176982
38. Faix, B., Radchuk, V., Nerlich, A., Hümmer, C., Radchuk, R., Emery, R., et al. (2012). Barley grains, deficient in cytosolic small subunit of ADP-glucose pyrophosphorylase, reveal coordinate adjustment of C:N metabolism mediated by an overlapping metabolic-hormonal control. Plant J. 69, 1077-1093. doi: 10.1111/j.1365-313X.2011.04857.x
39. Felker, F. C., and Shannon, J. C. (1980). Movement of 14C-labeled assimilates into kernels of Zea mays L: III. An anatomical examination and microautoradiographic study of assimilate transfer. Plant Physiol. 65, 864-870. doi: 10.1104/pp.65.5.864
40. Fincher, G. B. (1975). Morphology and chemical composition of barley endosperm cell walls. J. Inst. Brew. 81, 116-112. doi: 10.1002/j.2050-0416.1975.tb03672.x
41. Fleming, A. J., McQueen-Mason, S., Mandel, T., and Kuhlemeier, C. (1997). Induction of leaf primordia by the cell wall protein expansin. Science 276, 1415-1418. doi: 10.1126/science.276.5317.1415
42. Francis, D., and Halford, N. G. (2006). Nutrient sensing in plant meristems. Plant Mol. Biol. 60, 981-993. doi: 10.1007/s11103-005-5749-3
43. Fry, S., Smith, R., Renwick, K., Martin, D., Hodge, S., and Matthews, K. (1992). Xyloglucan endotransglycosylase, a new wall-loosening enzyme activity from plants. Biochem. J. 282, 821.
44. Fu, F.-F., and Xue, H.-W. (2010). Coexpression analysis identifies Rice Starch Regulator1, a rice AP2/EREBP family transcription factor, as a novel rice starch biosynthesis regulator. Plant Physiol. 154, 927-938. doi: 10.1104/pp.110.159517
45. Ge, Y.-X., Angenent, G. C., Wittich, P. E., Peters, J., Franken, J., Busscher, M., et al. (2000). NEC1, a novel gene, highly expressed in nectary tissue of Petunia hybrida. Plant J. 24, 725-734. doi: 10.1046/j.1365-313x.2000.00926.x
46. Gifford, R. M., and Evans, L. (1981). Photosynthesis, carbon partitioning, and yield. Annu. Rev. Plant Physiol. 32, 485-509. doi: 10.1146/annurev.pp.32.060181.002413
47. Glassop, D., Roessner, U., Bacic, A., and Bonnett, G. D. (2007). Changes in the sugarcane metabolome with stem development. Are they related to sucrose accumulation? Plant Cell Physiol. 48, 573-584. doi: 10.1093/pcp/pcm027
48. Grafahrend-Belau, E., Schreiber, F., Koschützki, D., and Junker, B. H. (2009). Flux balance analysis of barley seeds: a computational approach to study systemic properties of central metabolism. Plant Physiol. 149, 585-598. doi: 10.1104/pp.108.129635
49. Grof, C. P. L., Albertson, P. L., Bursle, J., Perroux, J. M., Bonnett, G. D., and Manners, J. M. (2007). Sucrose-phosphate synthase, a biochemical marker of high sucrose accumulation in sugarcane. Crop Sci. 47, 1530-1539. doi: 10.2135/cropsci2006.12.0825
50. Grof, C. P. L., So, C. T. E., Perroux, J. M., Bonnett, G. D., and Forrester, R. I. (2006). The five families of sucrose-phosphate synthase genes in Saccharum spp. are differentially expressed in leaves and stem. Funct. Plant Biol. 33, 605-610. doi: 10.1071/FP05283
51. Gübitz, T., Hoballah, M. E., Dell'Olivo, A., and Kuhlemeier, C. (2009). "Petunia as a model system for the genetics and evolution of pollination syndromes, " in Petunia, Evolutionary, Developmental and Physiological Genetics, eds T. Gerats and J. Strommer (New York: Springer), 29-49.
52. Hammer, G. L., Dong, Z., McLean, G., Doherty, A. I., Messina, C., Schussler, J., et al. (2009). Can changes in canopy and/or root system architecture explain historical maize yield trends in the U.S. Corn belt? Crop Sci. 49, 299-312. doi: 10.2135/cropsci2008.03.0152
53. Hands, P., Kourmpetli, S., Sharples, D., Harris, R. G., and Drea, S. (2012). Analysis of grain characters in temperate grasses reveals distinctive patterns of endosperm organization associated with grain shape. J. Exp. Bot. 63, 6253-6266. doi: 10.1093/jxb/ers281
54. Hennen-Bierwagen, T. A., and Myers, A. M. (2013). "Genomic specification of starch biosynthesis in maize endosperm, " in Seed Genomics, ed P.W. Becraft (Ames: John Wiley and Sons, Inc.), 123-137.
55. Herbers, K., and Sonnewald, U. (1998). Molecular determinants of sink strength. Curr. Opin. Plant Biol. 1, 207-216. doi: 10.1016/S1369-5266(98)80106-4
56. Ho, L. C. (1988). Metabolism and compartmentation of imported sugars in sink organs in relation to sink strength. Annu. Rev. Plant Physiol. Plant Mol. Biol. 39, 355-378. doi: 10.1146/annurev.pp.39.060188.002035
57. Hoffmann-Thoma, G., Hinkel, K., Nicolay, P., and Willenbrink, J. (1996). Sucrose accumulation in sweet sorghum stem internodes in relation to growth. Physiol. Plant. 97, 277-284. doi: 10.1034/j.1399-3054.1996.970210.x
58. Huang, L.-F., Bocock, P. N., Davis, J. M., and Koch, K. E. (2007). Regulation of invertase: a 'suite' of transcriptional and post-transcriptional mechanisms. Funct. Plant Biol. 34, 499-507. doi: 10.1071/FP06227
59. Huang, T., Darnell, R., and Koch, K. (1992). Water and carbon budgets of developing citrus fruit. J. Am. Soc. Hortic. Sci. 117, 287-293.
60. Huber, S. C., and Akazawa, T. (1986). A novel sucrose synthase pathway for sucrose degradation in cultured sycamore cells. Plant Physiol. 81, 1008-1013. doi: 10.1104/pp.81.4.1008
61. Im, K. H. (2004). Expression of sucrose-phosphate synthase (SPS) in non-photosynthetic tissues of maize. Mol. Cells 17, 404-409.
62. Izydorczyk, M. S., and Biliaderis, C. G. (1995). Cereal arabinoxylans: advances in structure and physicochemical properties. Carbohydr. Polym. 28, 33-48. doi: 10.1016/0144-8617(95)00077-1
63. Kaiser, G., and Heber, U. (1984). Sucrose transport into vacuoles isolated from barley mesophyll protoplasts. Planta 161, 562-568. doi: 10.1007/BF00407090
64. Kang, J., and Turano, F. J. (2003). The putative glutamate receptor 1.1 (AtGLR 1.1) functions as a regulator of carbon and nitrogen metabolism in Arabidopsis thaliana. Proc. Natl. Acad. Sci. U.S.A. 100, 6872-6877. doi: 10.1073/pnas.1030961100
65. Kang, S. G., Price, J., Lin, P.-C., Hong, J. C., and Jang, J.-C. (2010). The Arabidopsis bZIP1 transcription factor is involved in sugar signaling, protein networking, and DNA binding. Mol. Plant 3, 361-373. doi: 10.1093/mp/ssp115
66. Keeling, P. L., and Myers, A. M. (2010). Biochemistry and genetics of starch synthesis. Annu. Rev. Food Sci. Technol. 1, 271-303. doi: 10.1146/annurev.food.102308.124214
67. Koch, K. E. (1996). Carbohydrate-modulated gene expression in plants. Annu. Rev. Plant Physiol. Plant Mol. Biol. 47, 509-540. doi: 10.1146/annurev.arplant.47.1.509
68. Koch, K. E. (1997). "Molecular crosstalk and the regulation of C-and N-responsive genes, " in A Molecular Approach to Primary Metabolism in Higher Plants, eds C. Foyer and P. Quick (London: Taylor and Francis, Inc.), 105-124.
69. Koch, K. E. (2004). Sucrose metabolism: regulatory mechanisms and pivotal roles in sugar sensing and plant development. Curr. Opin. Plant Biol. 7, 235-246. doi: 10.1016/j.pbi.2004.03.014
70. Koch, K. E., and Avigne, W. T. (1990). Postphloem, nonvascular transfer in citrus: kinetics, metabolism, and sugar gradients. Plant Physiol. 93, 1405-1416. doi: 10.1104/pp.93.4.1405
71. Koch, K. E., Ying, Z., Wu, Y., and Avigne, W. T. (2000). Multiple paths of sugar-sensing and a sugar/oxygen overlap for genes of sucrose and ethanol metabolism. J. Exp. Bot. 51, 417-427. doi: 10.1093/jexbot/51.suppl_1.417
72. Kühn, C., and Grof, C. (2010). Sucrose transporters of higher plants. Curr. Opin. Plant Biol. 13, 1-11. doi: 10.1016/j.pbi.2010.02.001
73. Lalonde, S., Wipf, D., and Frommer, W. B. (2004). Transport mechanisms for organic forms of carbon and nitrogen between source and sink. Annu. Rev. Plant Biol. 55, 341-372. doi: 10.1146/annurev.arplant.55.031903.141758
74. Leggewie, G., Kolbe, A., Lemoine, R., Roessner, U., Lytovchenko, A., Zuther, E., et al. (2003). Overexpression of the sucrose transporter SoSUT1 in potato results in alterations in leaf carbon partitioning and in tuber metabolism but has little impact on tuber morphology. Planta 217, 158-167.
75. Li, J., Baroja-Fernández, E., Bahaji, A., Muñoz, F. J., Ovecka, M., Montero, M., et al. (2013). Enhancing sucrose synthase activity results in increased levels of starch and ADP-glucose in maize (Zea mays L.) seed endosperms. Plant Cell Physiol. 54, 282-294.
76. Li, N., Zhang, S., Zhao, Y., Li, B., and Zhang, J. (2011). Over-expression of AGPase genes enhances seed weight and starch content in transgenic maize. Planta 233, 241-250. doi: 10.1007/s00425-010-1296-5
77. Li, T., Liu, B., Spalding, M. H., Weeks, D. P., and Yang, B. (2012). High-efficiency TALEN-based gene editing produces disease-resistant rice. Nat. Biotechnol. 30, 390-392. doi: 10.1038/nbt.2199
78. Li, X., Xing, J., Gianfagna, T. J., and Janes, H. W. (2002). Sucrose regulation of ADP-glucose pyrophosphorylase subunit genes transcript levels in leaves and fruits. Plant Sci. 162, 239-244. doi: 10.1016/S0168-9452(01)00565-9
79. Lingle, S. (1989). Evidence for the uptake of sucrose intact into sugarcane internodes. Plant Physiol. 90, 6-8. doi: 10.1104/pp.90.1.6
80. Lingle, S. E. (1999). Sugar metabolism during growth and development in sugarcane internodes. Crop Sci. 39, 480-486. doi: 10.2135/cropsci1999.0011183X0039000200030x
81. Link, B. M., and Cosgrove, D. J. (1998). Acid-growth response and α-expansins in suspension cultures of bright yellow 2 tobacco. Plant Physiol. 118, 907-916. doi: 10.1104/pp.118.3.907
82. Liu, Y.-J., Xiu, Z.-H., Meeley, R., and Tan, B.-C. (2013). Empty pericarp5 encodes a pentatricopeptide repeat protein that is required for mitochondrial RNA editing and seed development in maize. Plant Cell 25, 868-883. doi: 10.1105/tpc.112.106781
83. Lizana, X. C., Riegel, R., Gomez, L. D., Herrera, J., Isla, A., McQueen-Mason, S. J., et al. (2010). Expansins expression is associated with grain size dynamics in wheat (Triticum aestivum L.). J. Exp. Bot. 61, 1147-1157. doi: 10.1093/jxb/erp380
84. Lunn, J. E., and MacRae, E. (2003). New complexities in the synthesis of sucrose. Curr. Opin. Plant Biol. 6, 208-214. doi: 10.1016/S1369-5266(03)00033-5
85. Ma, Y., Baker, R. F., Magallanes-Lundback, M., DellaPenna, D., and Braun, D. M. (2008). Tie-dyed1 and sucrose export defective1 act independently to promote carbohydrate export from maize leaves. Planta 227, 527-538. doi: 10.1007/s00425-007-0636-6
86. Manavski, N., Guyon, V., Meurer, J., Wienand, U., and Brettschneider, R. (2012). An essential pentatricopeptide repeat protein facilitates 5′ maturation and translation initiation of rps3 mRNA in maize mitochondria. Plant Cell 24, 3087-3105. doi: 10.1105/tpc.112.099051
87. Mancini, M. C., Leite, D. C., Perecin, D., Bidóia, M. A. P., Xavier, M. A., Landell, M. G. A., et al. (2012). Characterization of the genetic variability of a sugarcane commercial cross through yield components and quality parameters. Sugar Tech 14, 119-125.
88. Mandadi, K. K., Misra, A., Ren, S., and McKnight, T. D. (2009). BT2, a BTB protein, mediates multiple responses to nutrients, stresses, and hormones in Arabidopsis. Plant Physiol. 150, 1930-1939. doi: 10.1104/pp.109.139220
89. Marcelis, L. F. (1996). Sink strength as a determinant of dry matter partitioning in the whole plant. J. Exp. Bot. 47, 1281-1291. doi: 10.1093/jxb/47.Special_Issue.1281
90. McCormick, A. J., Cramer, M. D., and Watt, D. A. (2006). Sink strength regulates photosynthesis in sugarcane. New Phytol. 171, 759-770. doi: 10.1111/j.1469-8137.2006.01785.x
91. McCormick, A. J., Watt, D. A., and Cramer, M. D. (2009). Supply and demand: sink regulation of sugar accumulation in sugarcane. J. Exp. Bot. 60, 357-364. doi: 10.1093/jxb/ern310
92. McNeil, M., Albersheim, P., Taiz, L., and Jones, R. L. (1975). The structure of plant cell walls: VII. Barley aleurone cells. Plant Physiol. 55, 64-68. doi: 10.1104/pp.55.1.64
93. Méchin, V., Balliau, T., Château-Joubert, S., Davanture, M., Langella, O., Négroni, L., et al. (2004). A two-dimensional proteome map of maize endosperm. Phytochemistry 65, 1609-1618.
94. Meier, H., and Reid, J. S. G. (1982). "Reserve polysaccharides other than starch in higher plants, " in Plant Carbohydrates I, eds F. A. Loewus and W. Tanner (Berlin: Springer), 418-471. doi: 10.1007/978-3-642-68275-9_11
95. Merwe, M., Groenewald, J.-H., Stitt, M., Kossmann, J., and Botha, F. (2010). Downregulation of pyrophosphate: D-fructose-6-phosphate 1-phosphotransferase activity in sugarcane culms enhances sucrose accumulation due to elevated hexose-phosphate levels. Planta 231, 595-608. doi: 10.1007/s00425-009-1069-1
96. Moghaddam, M. R. B., and Van den Ende, W. (2013). Sugars, the clock and transition to flowering. Front. Plant Sci. 4:22. doi: 10.3389/fpls.2013.00022
97. Moore, P., and Cosgrove, D. (1991). Developmental changes in cell and tissue water relations parameters in storage parenchyma of sugarcane. Plant Physiol. 96, 794. doi: 10.1104/pp.96.3.794
98. Morrall, P., and Briggs, D. E. (1978). Changes in cell wall polysaccharides of germinating barley grains. Phytochemistry 17, 1495-1502. doi: 10.1016/S0031-9422(00)94628-4
99. Mudge, S., Osabe, K., Casu, R., Bonnett, G., Manners, J., and Birch, R. (2009). Efficient silencing of reporter transgenes coupled to known functional promoters in sugarcane, a highly polyploid crop species. Planta 229, 549-558. doi: 10.1007/s00425-008-0852-8
100. Murray, S. C., Rooney, W. L., Hamblin, M. T., Mitchell, S. E., and Kresovich, S. (2009). Sweet sorghum genetic diversity and association mapping for brix and height. Plant Genome 2, 48-62. doi: 10.3835/plantgenome2008.10.0011
101. Murray, S. C., Rooney, W. L., Mitchell, S. E., Sharma, A., Klein, P. E., Mullet, J. E., et al. (2008a). Genetic improvement of sorghum as a biofuel feedstock: II. QTL for stem and leaf structural carbohydrates. Crop Sci. 48, 2180-2193. doi: 10.2135/cropsci2008.01.0068
102. Murray, S. C., Sharma, A., Rooney, W. L., Klein, P. E., Mullet, J. E., Mitchell, S. E., et al. (2008b). Genetic improvement of sorghum as a biofuel feedstock: I. QTL for stem sugar and grain nonstructural carbohydrates. Crop Sci. 48, 2165-2179. doi: 10.2135/cropsci2008.01.0016
103. Nguyen-Quoc, B., N'Tchobo, H., Foyer, C. H., and Yelle, S. (1999). Overexpression of sucrose phosphate synthase increases sucrose unloading in transformed tomato fruit. J. Exp. Bot. 50, 785-791. doi: 10.1093/jxb/50.335.785
104. Niittyla, T., Fuglsang, A. T., Palmgren, M. G., Frommer, W. B., and Schulze, W. X. (2007). Temporal analysis of sucrose-induced phosphorylation changes in plasma membrane proteins of Arabidopsis. Mol. Cell. Proteomics 6, 1711-1726. doi: 10.1074/mcp.M700164-MCP200
105. Patrick, J. (1997). Phloem unloading: sieve element unloading and post-sieve element transport. Annu. Rev. Plant Physiol. Plant Mol. Biol. 48, 191-222. doi: 10.1146/annurev.arplant.48.1.191
106. Patrick, J. W., Botha, F. C., and Birch, R. G. (2013). Metabolic engineering of sugars and simple sugar derivatives in plants. Plant Biotechnol. J. 11, 142-156. doi: 10.1111/pbi.12002
107. Pecina-Quintero, V., Anaya-López, J. L., Zamarripa-Colmenero, A., Montes-García, N., Nuñez-Colín, C., Solis-Bonilla, J. L., et al. (2012). Genetic diversity of sweet sorghum germplasm in Mexico using AFLP and SSR markers. Pesqui. Agropecu. Bras. 47, 1095-1102.
108. Peng, Y., Li, C., and Fritschi, F. B. (2012). Apoplastic infusion of sucrose into stem internodes during female flowering does not increase grain yield in maize plants grown under nitrogen-limiting conditions. Physiol. Plant. doi: 10.1111/j.1399-3054.2012.01711.x [Epub ahead of print].
109. Philippe, S., Saulnier, L., and Guillon, F. (2006). Arabinoxylan and (13), (14)-β-glucan deposition in cell walls during wheat endosperm development. Planta 224, 449-461. doi: 10.1007/s00425-005-0209-5
110. Phillips, K. A., Skirpan, A. L., Liu, X., Christensen, A., Slewinski, T. L., Hudson, C., et al. (2011). vanishing tassel2 encodes a grass-specific tryptophan aminotransferase required for vegetative and reproductive development in maize. Plant Cell 23, 550-566. doi: 10.1105/tpc.110.075267
111. Price, M. B., Jelesko, J., and Okumoto, S. (2012). Glutamate receptor homologs in plants: functions and evolutionary origins. Front. Plant Sci. 3:235. doi: 10.3389/fpls.2012.00235
112. Qazi, H. A., Paranjpe, S., and Bhargava, S. (2012). Stem sugar accumulation in sweet sorghum-activity and expression of sucrose metabolizing enzymes and sucrose transporters. J. Plant Physiol. 169, 605-613. doi: 10.1016/j.jplph.2012.01.005
113. Rae, A. L., Perroux, J. M., and Grof, C. P. (2005). Sucrose partitioning between vascular bundles and storage parenchyma in the sugarcane stem: a potential role for the ShSUT1 sucrose transporter. Planta 220, 817-825. doi: 10.1007/s00425-004-1399-y
114. Raines, C. A. (2011). Increasing photosynthetic carbon assimilation in C3 plants to improve crop yield: current and future strategies. Plant Physiol. 155, 36-42. doi: 10.1104/pp.110.168559
115. Ramon, M., Rolland, F., Sheen, J., Ramon, M., Rolland, F., and Sheen, J. (2008). Sugar sensing and signaling. Arabidopsis Book 6:e0117. doi: 10.1199/tab.0117
116. Ransom-Hodgkins, W., Vaughn, M., and Bush, D. (2003). Protein phosphorylation plays a key role in sucrose-mediated transcriptional regulation of a phloem-specific proton-sucrose symporter. Planta 217, 483-489. doi: 10.1007/s00425-003-1011-x
117. Reddy, B., Ramesh, S., Reddy, P., Ramaih, B., Salimath, P., and Kachapar, R. (2005). Sweet sorghum-a potential alternate raw material for bio-ethanol and bio-energy. Int. Sorghum Millets Newslett. 46, 79-86.
118. Reeves, P. H., Ellis, C. M., Ploense, S. E., Wu, M.-F., Yadav, V., Tholl, D., et al. (2012). A regulatory network for coordinated flower maturation. PLoS Genet. 8:e1002506. doi: 10.1371/journal.pgen.1002506
119. Reid, J. S. G., Davies, C., and Meier, H. (1977). Endo-β-mannanase, the leguminous aleurone layer and the storage galactomannan in germinating seeds of Trigonella foenum-graecum L. Planta 133, 219-222. doi: 10.1007/BF00380680
120. Reid, J. S. G., and Meier, H. (1972). The function of the aleurone layer during galactomannan mobilisation in germinating seeds of fenugreek (Trigonella foenum-graecum L.), crimson clover (Trifolium incarnatum L.) and lucerne (Medicago sativa L.): a correlative biochemical and ultrastructural study. Planta 106, 44-60. doi: 10.1007/BF00385472
121. Rhoades, M., and Carvalho, A. (1944). The function and structure of the parenchyma sheath plastids of the maize leaf. Bull. Torrey Bot. Club 71, 335-346. doi: 10.2307/2481307
122. Ritter, K., Jordan, D., Chapman, S., Godwin, I., Mace, E., and McIntyre, L. C. (2008). Identification of QTL for sugar-related traits in a sweet x grain sorghum (Sorghum bicolor L. Moench) recombinant inbred population. Mol. Breed. 22, 367-384. doi: 10.1007/s11032-008-9182-6
123. Rolland, F., Baena-Gonzalez, E., and Sheen, J. (2006). Sugar sensing and signaling in plants: conserved and novel mechanisms. Annu. Rev. Plant Biol. 57, 675-709. doi: 10.1146/annurev.arplant.57.032905.105441
124. Rolletschek, H., Koch, K., Wobus, U., and Borisjuk, L. (2005). Positional cues for the starch/lipid balance in maize kernels and resource partitioning to the embryo. Plant J. 42, 69-83. doi: 10.1111/j.1365-313X.2005.02352.x
125. Rolletschek, H., Melkus, G., Grafahrend-Belau, E., Fuchs, J., Heinzel, N., Schreiber, F., et al. (2011). Combined noninvasive imaging and modeling approaches reveal metabolic compartmentation in the barley endosperm. Plant Cell 23, 3041-3054. doi: 10.1105/tpc.111.087015
126. Rooney, W. L., Blumenthal, J., Bean, B., and Mullet, J. E. (2007). Designing sorghum as a dedicated bioenergy feedstock. Biofuels Bioprod. Biorefin. 1, 147-157. doi: 10.1002/bbb.15
127. Rossouw, D., Kossmann, J., Botha, F. C., and Groenewald, J. (2010). Reduced neutral invertase activity in the culm tissues of transgenic sugarcane plants results in a decrease in respiration and sucrose cycling and an increase in the sucrose to hexose ratio. Funct. Plant Biol. 37, 22-31. doi: 10.1071/FP08210
128. Ruan, Y.-L., Jin, Y., Yang, Y.-J., Li, G.-J., and Boyer, J. S. (2010). Sugar input, metabolism, and signaling mediated by invertase: roles in development, yield potential, and response to drought and heat. Mol. Plant 3, 942-955. doi: 10.1093/mp/ssq044
129. Ruan, C.-J., Shao, H.-B., and Teixeira da Silva, J. A. (2012a). A critical review on the improvement of photosynthetic carbon assimilation in C3 plants using genetic engineering. Crit. Rev. Biotechnol. 32, 1-21. doi: 10.3109/07388551.2010.533119
130. Ruan, Y.-L., Patrick, J. W., Bouzayen, M., Osorio, S., and Fernie, A. R. (2012b). Molecular regulation of seed and fruit set. Trends Plant Sci. 17, 656-665. doi: 10.1016/j.tplants.2012.06.005
131. Sabelli, P. A., and Larkins, B. A. (2009). The development of endosperm in grasses. Plant Physiol. 149, 14-26. doi: 10.1104/pp.108.129437
132. Sakamoto, T., Morinaka, Y., Ohnishi, T., Sunohara, H., Fujioka, S., Ueguchi-Tanaka, M., et al. (2006). Erect leaves caused by brassinosteroid deficiency increase biomass production and grain yield in rice. Nat. Biotechnol. 24, 105-109. doi: 10.1038/nbt1173
133. Sauer, N. (2007). Molecular physiology of higher plant sucrose transporters. FEBS Lett. 581, 2309-2317. doi: 10.1016/j.febslet.2007.03.048
134. Schafer, W. E., Rohwer, J. M., and Botha, F. C. (2004). Protein-level expression and localization of sucrose synthase in the sugarcane culm. Physiol. Plant. 121, 187-195. doi: 10.1111/j.0031-9317.2004.00316.x
135. Schmalstig, J. G., and Hitz, W. D. (1987). Transport and metabolism of a sucrose analog (1′-fluorosucrose) into Zea mays L. endosperm without invertase hydrolysis. Plant Physiol. 85, 902-905. doi: 10.1104/pp.85.4.902
136. Seebauer, J. R., Moose, S. P., Fabbri, B. J., Crossland, L. D., and Below, F. E. (2004). Amino acid metabolism in maize earshoots. Implications for assimilate preconditioning and nitrogen signaling. Plant Physiol. 136, 4326-4334. doi: 10.1104/pp.104.043778
137. Seebauer, J. R., Singletary, G. W., Krumpelman, P. M., Ruffo, M. L., and Below, F. E. (2010). Relationship of source and sink in determining kernel composition of maize. J. Exp. Bot. 61, 511-519. doi: 10.1093/jxb/erp324
138. Setter, T. L., and Parra, R. (2010). Relationship of carbohydrate and abscisic acid levels to kernel set in maize under postpollination water deficit. Crop Sci. 50, 980-988. doi: 10.2135/cropsci2009.07.0391
139. Shannon, J. C. (1972). Movement of 14C-labeled assimilates into kernels of Zea mays L. I. Pattern and rate of sugar movement. Plant Physiol. 49, 198-202. doi: 10.1104/pp.49.2.198
140. Shannon, J. C., and Dougherty, C. (1972). Movement of 14C-Labeled assimilates into kernels of Zea mays L. II. Invertase activity of the pedicel and placento-chalazal tissues. Plant Physiol. 49, 203-206. doi: 10.1104/pp.49.2.203
141. Sharma, S., Sreenivasulu, N., Harshavardhan, V., Seiler, C., Sharma, S., Khalil, Z., et al. (2010). Delineating the structural, functional and evolutionary relationships of sucrose phosphate synthase gene family II in wheat and related grasses. BMC Plant Biol. 10:134. doi: 10.1186/1471-2229-10-134
142. Shen, B., Allen, W. B., Zheng, P., Li, C., Glassman, K., Ranch, J., et al. (2010). Expression of ZmLEC1 and ZmWRI1 increases seed oil production in maize. Plant Physiol. 153, 980-987. doi: 10.1104/pp.110.157537
143. Shevell, D. E., Kunkel, T., and Chua, N.-H. (2000). Cell wall alterations in the Arabidopsis emb30 mutant. Plant Cell 12, 2047-2059.
144. Singletary, G. W., Doehlert, D. C., Wilson, C. M., Muhitch, M. J., and Below, F. E. (1990). Response of enzymes and storage proteins of maize endosperm to nitrogen supply. Plant Physiol. 94, 858-864. doi: 10.1104/pp.94.3.858
145. Slewinski, T. L. (2011). Diverse functional roles of monosaccharide transporters and their homologs in vascular plants: a physiological perspective. Mol. Plant 4, 641-662. doi: 10.1093/mp/ssr051
146. Slewinski, T. L. (2012). Non-structural carbohydrate partitioning in grass stems: a target to increase yield stability, stress tolerance, and biofuel production. J. Exp. Bot. 63, 4647-4670. doi: 10.1093/jxb/ers124
147. Slewinski, T. L., and Braun, D. M. (2010). Current perspectives on the regulation of whole-plant carbohydrate partitioning. Plant Sci. 178, 341-349. doi: 10.1016/j.plantsci.2010.01.010
148. Slewinski, T. L., Garg, A., Johal, G. S., and Braun, D. M. (2010). Maize SUT1 functions in phloem loading. Plant Signal. Behav. 5, 687-690. doi: 10.4161/psb.5.6.11575
149. Slewinski, T. L., Ma, Y., Baker, R. F., Huang, M., Meeley, R., and Braun, D. M. (2008). Determining the role of Tie-dyed1 in starch metabolism: epistasis analysis with a maize ADP-glucose pyrophosphorylase mutant lacking leaf starch. J. Hered. 99, 661-666. doi: 10.1093/jhered/esn062
150. Slewinski, T. L., Meeley, R., and Braun, D. M. (2009). Sucrose transporter1 functions in phloem loading in maize leaves. J. Exp. Bot. 60, 881-892. doi: 10.1093/jxb/ern335
151. Smidansky, E. D., Clancy, M., Meyer, F. D., Lanning, S. P., Blake, N. K., Talbert, L. E., et al. (2002). Enhanced ADP-glucose pyrophosphorylase activity in wheat endosperm increases seed yield. Proc. Natl. Acad. Sci. U.S.A. 99, 1724-1729. doi: 10.1073/pnas.022635299
152. Smith, A. M., and Stitt, M. (2007). Coordination of carbon supply and plant growth. Plant Cell Environ. 30, 1126-1149. doi: 10.1111/j.1365-3040.2007.01708.x
153. Tai, P. Y. P., and Miller, J. D. (2002). Germplasm diversity among four sugarcane species for sugar composition. Crop Sci. 42, 958-964. doi: 10.2135/cropsci2002.0958
154. Tang, A.-C., and Boyer, J. S. (2013). Differences in membrane selectivity drive phloem transport to the apoplast from which maize florets develop. Ann. Bot. 111, 551-562. doi: 10.1093/aob/mct1012
155. Tarpley, L., Vietor, D., and Miller, F. (1994). Internodal compartmentation of stem-infused [14C]sucrose in sweet and grain sorghum. Crop Sci. 34, 1116-1120. doi: 10.2135/cropsci1994.0011183X003400040052x
156. Tarpley, L., and Vietor, D. M. (2007). Compartmentation of sucrose during radial transfer in mature sorghum culm. BMC Plant Biol. 7:33. doi: 10.1186/1471-2229-7-33
157. Tarpley, L., Vietor, D. M., and Miller, F. R. (1996). Metabolism of sucrose during storage in intact sorghum stalk. Int. J. Plant Sci. 157, 159-163. doi: 10.1086/297334
158. Tiessen, A., and Padilla-Chacon, D. (2013). Subcellular compartmentation of sugar signalling: links among carbon cellular status, route of sucrolysis, sink-source allocation, and metabolic partitioning. Front. Plant Sci. 3:306. doi: 10.3389/fpls.2012.00306
159. Tomes, D. T., Zinselmeier, C., and Habben, J. E. (2011). Enhanced Floral Sink Strength and Increased Stability of Seed Set in Plants. U.S. Patent Application 8, 026, 411.
160. Turgeon, R. (2006). Phloem loading: how leaves gain their independence. BioScience 56, 15-24. doi: 10.1641/0006-3568(2006)056[0015:PLHLGT]2.0.CO;2
161. Turgeon, R. (2010). The puzzle of phloem pressure. Plant Physiol. 154, 578-581. doi: 10.1104/pp.110.161679
162. Uribelarrea, M., Below, F. E., and Moose, S. P. (2004). Grain composition and productivity of maize hybrids derived from the illinois protein strains in response to variable nitrogen supply. Crop Sci. 44, 1593-1600. doi: 10.2135/cropsci2004.1593
163. Vargas, W. A., and Salerno, G. L. (2010). The Cinderella story of sucrose hydrolysis: alkaline/neutral invertases, from cyanobacteria to unforeseen roles in plant cytosol and organelles. Plant Sci. 178, 1-8. doi: 10.1016/j.plantsci.2009.09.015
164. Vickers, J. E., Grof, C. P. L., Bonnett, G. D., Jackson, P. A., and Morgan, T. E. (2005). Effects of tissue culture, biolistic transformation, and introduction of PPO and SPS gene constructs on performance of sugarcane clones in the field. Aust. J. Agric. Res. 56, 57-68. doi: 10.1071/AR04159
165. Vilhar, B., Kladnik, A., Blejec, A., Chourey, P. S., and Dermastia, M. (2002). Cytometrical evidence that the loss of seed weight in the miniature1 seed mutant of maize is associated with reduced mitotic activity in the developing endosperm. Plant Physiol. 129, 23-30. doi: 10.1104/pp.001826
166. Waclawovsky, A. J., Sato, P. M., Lembke, C. G., Moore, P. H., and Souza, G. M. (2010). Sugarcane for bioenergy production: an assessment of yield and regulation of sucrose content. Plant Biotechnol. J. 8, 263-276. doi: 10.1111/j.1467-7652.2009.00491.x
167. Walsh, K. B., Sky, R. C., and Brown, S. M. (2005). The anatomy of the pathway of sucrose unloading within the sugarcane stalk. Funct. Plant Biol. 32, 367-374. doi: 10.1071/FP04102
168. Wang, G., Sun, X., Wang, G., Wang, F., Gao, Q., Sun, X., et al. (2011). Opaque7 encodes an acyl-activating enzyme-like protein that affects storage protein synthesis in maize endosperm. Genetics 189, 1281-1295. doi: 10.1534/genetics.111.133967
169. Wang, Z., Chen, X., Wang, J., Liu, T., Liu, Y., Zhao, L., et al. (2007). Increasing maize seed weight by enhancing the cytoplasmic ADP-glucose pyrophosphorylase activity in transgenic maize plants. Plant Cell Tissue Organ Cult. 88, 83-92. doi: 10.1007/s11240-006-9173-4
170. Weber, H., Borisjuk, L., and Wobus, U. (1997). Sugar import and metabolism during seed development. Trends Plant Sci. 2, 169-174. doi: 10.1016/S1360-1385(97)85222-3
171. Welbaum, G., Meinzer, F., Grayson, R., and Thornham, K. (1992). Evidence for the consequences of a barrier to solute diffusion between the apoplast and vascular bundles in sugarcane stalk tissue. Funct. Plant Biol. 19, 611-623.
172. Welbaum, G. E., and Meinzer, F. C. (1990). Compartmentation of solutes and water in developing sugarcane stalk tissue. Plant Physiol. 93, 1147-1153. doi: 10.1104/pp.93.3.1147
173. Wilson, S., Burton, R., Doblin, M., Stone, B., Newbigin, E., Fincher, G., et al. (2006). Temporal and spatial appearance of wall polysaccharides during cellularization of barley (Hordeum vulgare) endosperm. Planta 224, 655-667. doi: 10.1007/s00425-006-0244-x
174. Wiltshire, J. J. J., and Cobb, A. H. (1996). A review of the physiology of potato tuber dormancy. Ann. Appl. Biol. 129, 553-569. doi: 10.1111/j.1744-7348.1996.tb05776.x
175. Wingenter, K., Schulz, A., Wormit, A., Wic, S., Trentmann, O., Hoermiller, I. I., et al. (2010). Increased activity of the vacuolar monosaccharide transporter TMT1 alters cellular sugar partitioning, sugar signaling, and seed yield in Arabidopsis. Plant Physiol. 154, 665-677. doi: 10.1104/pp.110.162040
176. Winter, H., and Huber, S. C. (2000). Regulation of sucrose metabolism in higher plants: localization and regulation of activity of key enzymes. Crit. Rev. Plant Sci. 19, 31-68. doi: 10.1016/S0735-2689(01)80002-2
177. Wu, L., and Birch, R. G. (2007). Doubled sugar content in sugarcane plants modified to produce a sucrose isomer. Plant Biotechnol. J. 5, 109-117. doi: 10.1111/j.1467-7652.2006.00224.x
178. Wu, L., and Birch, R. G. (2010). Physiological basis for enhanced sucrose accumulation in an engineered sugarcane cell line. Funct. Plant Biol. 37, 1161-1174. doi: 10.1071/FP10055
179. Xiong, Y., Li, Q.-B., Kang, B.-H., and Chourey, P. (2011). Discovery of genes expressed in basal endosperm transfer cells in maize using 454 transcriptome sequencing. Plant Mol. Biol. Rep. 29, 835-847. doi: 10.1007/s11105-011-0291-8
180. Xiong, Y., McCormack, M., Li, L., Hall, Q., Xiang, C., and Sheen, J. (2013). Glucose-TOR signalling reprograms the transcriptome and activates meristems. Nature 496, 181-186. doi: 10.1038/nature12030
181. Xu, J., Avigne, W. T., McCarty, D. R., and Koch, K. E. (1996). A similar dichotomy of sugar modulation and developmental expression affects both paths of sucrose metabolism: evidence from a maize invertase gene family. Plant Cell 8, 1209-1220.
182. Yang, B., Sugio, A., and White, F. F. (2006). Os8N3 is a host disease-susceptibility gene for bacterial blight of rice. Proc. Natl. Acad. Sci. U.S.A. 103, 10503-10508. doi: 10.1073/pnas.0604088103
183. Yang, X., Guo, Y., Yan, J., Zhang, J., Song, T., Rocheford, T., et al. (2010). Major and minor QTL and epistasis contribute to fatty acid compositions and oil concentration in high-oil maize. Theor. Appl. Genet. 120, 665-678. doi: 10.1007/s00122-009-1184-1
184. Yokoyama, K., Ishijima, S. A., Clowney, L., Koike, H., Aramaki, H., Tanaka, C., et al. (2006). Feast/famine regulatory proteins (FFRPs): Escherichia coli Lrp, AsnC and related archaeal transcription factors. FEMS Microbiol. Rev. 30, 89-108. doi: 10.1111/j.1574-6976.2005.00005.x
185. Yuan, M., and Wang, S. (2013). Rice MtN3/saliva family genes and their homologues in cellular organisms. Mol. Plant doi: 10.1093/mp/sst1035 [Epub ahead of print].
186. Zeng, Y., Wu, Y., Avigne, W. T., and Koch, K. E. (1998). Differential regulation of sugar-sensitive sucrose synthases by hypoxia and anoxia indicate complementary transcriptional and posttranscriptional responses. Plant Physiol. 116, 1573-1583. doi: 10.1104/pp.116.4.1573
187. Zhang, W.-H., Zhou, Y., Dibley, K. E., Tyerman, S. D., Furbank, R. T., and Patrick, J. W. (2007). Nutrient loading of developing seeds. Funct. Plant Biol. 34, 314-331. doi: 10.1071/FP06271
188. Zheng, H. J., Wu, A. Z., Zheng, C. C., Wang, Y. F., Cai, R., Shen, X. F., et al. (2009). QTL mapping of maize (Zea mays) stay-green traits and their relationship to yield. Plant Breed. 128, 54-62. doi: 10.1111/j.1439-0523.2008.01529.x
189. Zhu, X. G., Long, S. P., and Ort, D. R. (2010). Improving photosynthetic efficiency for greater yield. Annu. Rev. Plant Biol. 61, 235-261. doi: 10.1146/annurev-arplant-042809-112206
190. Zhu, Y. J., Komor, E., and Moore, P. H. (1997). Sucrose accumulation in the sugarcane stem is regulated by the difference between the activities of soluble acid invertase and sucrose phosphate synthase. Plant Physiol. 115, 609-616.