Engineering bacterial competitiveness and persistence in the phytosphere

Molecular Plant-Microbe Interactions

Volumn 15, Issue 9, 2002, Pages 866-874

  Savka, Michael A ^a   Dessaux, Yves ^a   Oger, Phil ^a   Rossbach, Silvia ^a  

^a CNRS   (France)

Author keywords

Biased rhizosphere; Rhizopine

Indexed keywords

AGROBACTERIUM; BACTERIA (MICROORGANISMS);

EID: 0036747308     PISSN: 08940282     EISSN: None     Source Type: Journal    
DOI: 10.1094/MPMI.2002.15.9.866     Document Type: Review

References (132)

1. Adams, P. B. 1990. The potential of mycoparasites for biological control of plant diseases. Annu. Rev. Phytopathol. 28:59-72.
2. Allison, M. J., Hammond, A. C., and Jones, R. J. 1990. Detection of ruminal bacteria that degrade toxic dihydroxypyridine compounds produced from mimosine. Appl. Environ. Microbiol. 56:590-594
3. Arrage, A. A., Phelps, T. J., Benoit, R. E., and White, D. C. 1993. Survival of subsurface microorganisms exposed to UV radiation and hydrogen peroxide. Appl. Environ. Microbiol. 59:3545-3550.
4. Asano, N., Oseki, K., Tomioka, E., Kizu, H., and Matsui. K. 1994. N-containing sugars from Morus alba and their glycosidase inhibitory activities. Carbohydr. Res. 259:243-255.
5. Asano, N., Kato, A., Kizu, H., Matsui, K., Watson, A. A., and Nash, R. J. 1996. Calystegine B4, a novel trehalase inhibitor from Scopolia japonica. Carbohydr. Res. 293:195-204.
6. Ashelford, K. E., Day, M. J., Bailey, M. J., Lilley, A. K., and Fry, J. C. 1999. In situ population dynamics of bacterial viruses in a terrestrial environment. Appl. Environ. Microbiol. 65:169-174
7. Beaulieu, C., Coulombe, L. J., Granger, B., Miki, C., Beauchamp, C., Rossignol, R., and Dion, P. (1983) Characterization of opine-utilizing bacteria isolated from Quebec. Phytoprotection 64:61-68.
8. Bloemberg, G. V., and Lugtenberg, B. J. J. 2001. Molecular basis of plant growth promotion and biocontrol by rhizobacteria. Curr. Opin. Plant Biol. 4:343-350.
9. Bohannan, B. J. M., and Lenski, R. E. 2000. Linking genetic change to community evolution: insights from studies of bacteria and bacteriophage. Ecol. Lett. 3:362-377.
10. Bowen, G. D. 1991. Microbial dynamics in the rhizosphere: possible strategies in managing rhizosphere populations. Pages 25-32 in: The Rhizosphere and Plant Growth. D. L. Keister and P. B. Cregan, eds. Kluwer Academic Publishers, Dordrecht, The Netherlands.
11. Chin-A-Woeng, T. F., van den Broek, D., de Voer, G., van der Drift, K. M., Tuinman, S., Thomas-Oates, J. E., Lugtenberg B. J. J., and Bloemberg, G. V. 2001. Phenazine-1-carboxamide production in the biocontrol strain Pseudomonas chlororaphis PCL1391 is regulated by multiple factors secreted into the growth medium. Mol. Plant-Microbe Interact. 14:969-979.
12. Colbert, S. F., Isakeit, T., Ferri, M., Weinhold, A. R., Hendson, M., and Schroth, M. N. 1993a. Use of an exotic carbon source to selectively increase metabolic activity and growth of Pseudomonas putida in soil. Appl. Environ. Microbiol. 59:2056-2063.
13. Colbert, S. F., Schroth, M. N., Weinhold, A. R., and Hendson, M. 1993b. Enhancement of population densities of Pseudomonas putida PpG7 in agricultural ecosystems by selective feeding with the carbon source salicylate. Appl. Environ. Microbiol. 59:2064-2070.
14. Colbert, S. F., Hendson, M., Ferri, M., and Schroth, M. N. 1993c. Enhanced growth and activity of a biocontrol bacterium genetically engineered to utilize salicylate Appl. Environ. Microbiol 59:2071-2076.
15. Cook, R. J., Thomashow, L. S., Weller, D. M., Fujimoto, D., Mazzola, M., Bangera, G., and Kim, D. 1995. Molecular mechanisms of defense by rhizobacteria against root disease. Proc. Natl. Acad. Sci. U.S.A. 92:4197-4201.
16. Copley, J. 2000. Ecology goes underground. Nature 406:452-454.
17. Cullen, D., and Andrews, J. H. 1984. Epiphytic microbes as biological control agents. Plant-microbe interactions. Pages 381-399 in: Plant-Microbe Interactions. T. Kosuge and E. W. Nester, eds. McMillan, New York.
18. Cummings, C. A., and Relman, D. A. 2000. Using DNA microarrays to study host-microbe interactions. Emerg. Infect. Dis. 6:513-525.
19. Curl, E. A., and Truelove, B. 1986. The rhizosphere. Advanced series in Agricultural Sciences, Vol. 15. B. Yaron, ed. Springer-Verlag, Berlin.
20. Dessaux, Y., Tempé, J., and Farrand, S. K. 1987. Genetic analysis of mannityl opine catabolism in octopine-type Agrobacterium tumefaciens strain 15955. Mol. Gen. Genet. 208:301-308.
21. Dessaux, Y., Petit, A., Farrand, S. K., and Murphy, P. J. 1998. Opines and opine-like molecules involved in plant-Rhizobiaceae interactions. Pages 173-197 in: The Rhizobiaceae. H. P. Spaink, A. Kondorosi, and P. J. J Hooykaas, eds. Kluwer Academic Publishers, Dordrecht. The Netherlands.
22. Devliegher, W., Syamsul Arif, M. A., and Verstraete, W. 1995. Survival and plant growth promotion of detergent-adapted Pseudomonas fluorescens ANP15 and Pseudomonas aeruginosa 7NSK2. Appl. Environ. Microbiol. 61:3865-3871.
23. Dong, Y. H., Xu, J. L., Li, X. Z., and Zhang, L. H. 2000. AiiA, an enzyme that inactivates the acylhomoserine lactone quorum-sensing signal and attenuates the virulence of Erwinia carotovora. Proc. Natl. Acad. Sci. U.S.A. 97:3526-3531.
24. Dong, Y. H., Wang, L. H., Xu, J. L., Zhang, H. B., Zhang, X. F., Zhang, L. H. 2001. Quenching quorum-sensing-dependent bacterial infection by an N-acyl homoserine lactonase. Nature 411:748-749.
25. Eayre, C. G., Bartz, J. A., and Concelmo, D. E. 1995. Bacteriophages of Erwinia carotovora and Erwinia ananas isolated from freshwater lakes. Plant Dis. 79:801-804.
26. Farrand, S. K., Wilson, M., Lindow, S. E., and Savka, M. A. 1994a. Modulating competition in the rhizosphere by resource utilization. Abstr. Mol. Ecol. 3:619.
27. Farrand, S. K., Wilson, M., Lindow, S. E., and Savka, M. A. 1994b. Modulating colonization by plant-associated microbes. Pages 233-237 in: Improving Plant Productivity with Rhizosphere Bacteria. M. H. Ryder, R. P. Stephens, and G. D. Bowen, eds. CSIRO, Glen Osmond, Australia.
28. Fox, P. M., and Borthakur, D. 2001. Selection of several classes of mimosine-degradation-defective Tn3HoHo gus-insertion mutants of Rhizobium sp. strain TAL1145 on the basis of mimosine-inducible GUS activity. Can. J. Microbiol. 47:488-494.
29. Fray, R. G., Throup, J. P., Daykin, M., Wallace, A., Williams, P., Stewart, G. S., and Grierson, D. 1999. Plants genetically modified to produce N-acylhomoserine lactones communicate with bacteria. Nature/Biotechnol. 17:1017-1020.
30. Fuqua, C., Parsek, M. R., and Greenberg, E. P. 2001. Regulation of gene expression by cell-to-cell communication: Acyl-homoserine lactone quorum sensing. Annu. Rev. Genet. 35:439-468.
31. Galibert, F., Finan, T. M., Long, S. R., Puehler, A., Abola, P., Ampe, F., Barloy-Hubler, F., Barnett, M. J., Becker, A., Boistard, P., Bothe, G., Boutry, M., Bowser, L., Buhrmester, J., Cadieu, E., Capela, D., Chain, P., Cowie, A., Davis, R. W., Dreano, S., Federspiel, N. A., Fisher, R. F., Gloux, S., Godrie, T., Goffeau, A., Golding, B., Gouzy, J., Gurjal, M., Hernandez-Lucas, I., Hong, A., Huizar, L., Hyman, R. W., Jones, T., Kahn, D., Kahn, M. L., Kalman, S., Keating, D. H., Kiss, E., Komp, C., Lelaure, V., Masuy, D., Palm, C., Peck, M. C., Pohl, T. M., Portetelle, D., Purnelle, B., Ramsperger, U., Surzycki, R., Thebault, P., Vandenbol, M., Vorhoelter, F. J., Weidner, S., Wells, D. H., Wong, K., Yeh, K.-C., and Batut, J. 2001. The composite genome of the legume symbiont Sinorhizobium meliloti. Science 293:668-672.
32. Germida, J. J. 1987 Isolation of Bdellovibrio spp. that prey on Azospirillum brasilense in soil. Can. J. Microbiol. 33:459-461
33. Gordon, D. M., Ryder, M. H., Heinrich, K., and Murphy, P. J. 1996. An experimental test of the rhizopine concept in Rhizobium meliloti. Appl. Environ. Microbiol. 62:3991-3996.
34. Grayer, R. J., and Kokubun, T. 2001. Plant-fungal interactions: The search for phytoalexins and other antifungal compounds from higher plants. Phytochemistry 56:253-63.
35. Grayston, S. J., Wang, S., Campbell, C. D., and Edwards, A. C. 1998. Selective influence of plant species on microbial diversity in the rhizosphere. Soil Biol. Biochem. 30:369-378.
36. Guerrero, R., Pedros-Alio, C., Esteve, I., Mas, J., Chase, D., and Margulis, L. 1986. Predatory prokaryotes: Predation and primary consumption evolved in bacteria. Proc. Natl. Acad. Sci. U.S.A. 83:2138-2142.
37. Guillaumes, J., Houdeau, G., Germain, R., and Olivier J. M. 1988. Amélioration de la lutte biologique contre Pseudomonas tolaasii par utilisation de bacteriophages asociés à une bactérie antagoniste. EPPO Bull. 18:77-82.
38. Guyon, P., Petit, A., Tempé, J., and Dessaux, Y. 1993. Transformed plants producing opine specifically promote the growth of opine-degrading Agrobacteria. Mol. Plant-Microbe Interact. 6:92-98.
39. Hammond, A. C. 1995. Leucaena toxicosis and its control in ruminants. J. Anim. Sci. 73:1487-1492
40. Hammond, A. C., Allison, M. J., Williams, M. J., Prine, G. M., and Bates, D.B. 1989. Prevention of leucaena toxicosis of cattle in Florida by ruminal inoculation with 3-hydroxy-4-(1H)-pyridone-degrading bacteria. Am. J. Vet. Res. 50:2176-2180.
41. Heinrich, K., Gordon, D. M., Ryder, M. H., and Murphy, P. J. 1999. A rhizopine strain of Sinorhizobium meliloti remains at a competitive nodulation advantage after an extended period in the soil. Soil Biol. Biochem. 31:1063-1065.
42. Hentzer, M., Riedel, K., Rasmussen, T. B., Heydorn, A., Anderson, J. B., Parsek, M. R., Rice, S. A., Eberl, L., Molin, S., Hoiby, N., Kjelleberg, S., and Givskov, M. 2002. Inhibition of quorum sensing in Pseudomonas aeruginosa biofilm bacteria by a halogenated furanone compound. Microbiol. 148:87-102.
43. Holmes, J. H., Humphrey J. D., Walton, E. A., and O'Shea, J. D. 1981. Cataracts, goitre and infertility in cattle grazed on an exclusive diet of Leucaena leucocephala. Aust. Vet. J. 57:257-261.
44. Howe, T. G., and Ward, J. M. 1976. The utilization of tween 80 as carbon source by Pseudomonas. J. Gen. Microbiol. 92:234-235.
45. Jones, R. J., and Megarrity, R. G. 1986. Successful transfer of DHP-degrading bacteria from Hawaiian goats to Australian ruminants to overcome the toxicity of Leucaena. Aust. Vet. J. 63:259-262.
46. Jurkevitch, E., Minz, D., Ramati, B., and Barel, G. 2000. Prey range characterization, ribotyping, and diversity of soil and rhizosphere Bdellovibrio spp. on phytopathogenic bacteria. Appl. Environ. Microbiol. 66:2365-2371.
47. Kjelleberg, S., Steinberg, P., Givskov, M., Gram, L., Manefield, M., and de Nys, R. 1997. Do marine natural products interfere with prokaryotic AHL regulatory systems? Aquat. Microb. Ecol. 13:85-93.
48. Kloepper, J. W., and Schroth, M. N. 1978. Plant growth promoting rhizo-bacteria. Pages GG-GG in: Proceedings of the 4th International Conference on Plant Pathogneic Bacteria, Angers. M. Ridé, ed. Editions INRA, Angers, France.
49. Kloepper, J. W., Leong, J., Teintze, M., and Schroth, M. N. 1978. Pseudomonas siderophores: a mechanism explaining disease-suppressive soils. Curr. Microbiol. 4:317-320.
50. Kulkarni, S., and Nautiyal, C. S. 2000. Effects of salt and pH stress on temperature-tolerant Rhizobium sp. NBRI330 nodulating Prosopis juliflora. Curr. Microbiol. 40:221-226.
51. Lajoie, C. A., Chen, S.-Y., Oh, K.-C., and Strom, P. F. 1992. Development and used of field application vectors to express nonadaptative foreign genes in competitive environments. Appl. Environ. Microbiol. 58:655-663.
52. Lam, S. T., and Gaffney, T. D. 1993. Biological activities of bacteria used in pathogen control. Pages 291-390 in: Biotechnology in Plant Disease Control. I. Chet, ed. Wiley-Liss, New York.
53. Lam, S. T., Torkewitz, N. R., Nautiyal, C. S., and Dion, P. 1991. Impact of the ability to utilize a single substrate on colonization competitiveness. Phytopathology 81:1163-1164.
54. Leadbetter, J. R., and Greenberg, E. P. 2000. Metabolism of acyl-homoserine lactone quorum-sensing signals by Variovorax paradoxus. J. Bacteriol 182:6921-6926.
55. Lemanceau P., Bakker, P. A. H. M., De Kogel, W. J., Alabouvette, C., and Schippers, B. 1992. Effect of pseudobactin 358 production by Pseudomonas putida WCS358 on suppression of fusarium wilt of carnations by nonpathogenic Fusarium oxysporum Fo47. Appl. Environ. Microbiol. 58:2978-2982.
56. Lemanceau, P., Corberand, T., Gardan, L., Latour, X., Laguerre, G., Boeufgras, J.-M., and Alabouvette, C. 1995. Effect of two plant species, Flax (Linum usitatissinum L.) and Tomato (Lycopersicum esculentum Mill.), on the diversity of soilborne populations of fluorescent pseudomonads. Appl. Environ. Microbiol. 61:1004-1012
57. Leverentz, B., Conway, W. S., Alavidze, Z., Janisiewicz, W. J., Fuchs, Y., Camp, M. J., Chighladze, E., Sulakvelidze, A. 2001. Examination of bacteriophage as a biocontrol method for salmonella on fresh-cut fruit: A model study. J. Food Prot. 64:1116-1121.
58. Li, J., Ovakim, D. H., Charles, T. C., and Glick, B. R. 2000. An ACC deaminase minus mutant of Enterobacter cloacae UW4 no longer promotes root elongation. Curr. Microbiol. 41:101-105.
59. Loper, J. E., and Buyer, J. S. 1991. Siderophores in microbial interactions on plant surfaces. Mol. Plant-Microbe Interact. 4:5-13.
60. Loper, J. E., and Henkels, M. D. 1999. Utilization of heterologous siderophores enhances levels of iron available to Pseudomonas putida in rhizosphere. Appl. Environ. Microbiol. 65:5357-5363.
61. Mäe, A., Montesano, M., Koiv, V., and Palva, E. T. 2001. Transgenic plants producing the bacterial pheromone N-acyl-homoserine lactone exhibit enhanced resistance to the bacterial phytopathogen Erwinia carotovora. Mol. Plant-Microbe Interact. 14:1035-1042.
62. Mansouri, H., Petit, A., and Dessaux, Y. 2002. Engineered rhizosphere: the trophic bias generated by opine-producing plants is independent of the opine-type, the soil origin and the plant species. Appl. Environ. Microbiol. 68:2562-2566.
63. Manefield, M., de Nyl, R., Kumar, N., Read, R., Givskov, M., Steinberg, P., Kjelleberg, S. 1999. Evidence that halogenated furanones from Delisea pulchra inhibit acylated homoserine lactone (AHL)- mediated gene expression by displacing the AHL signal from its receptor protein. Microbol. 145:283-291.
64. Mazzola, M., Cook, R. J., Thomashow, L. S., Weller, D. M., and Pierson, L. S., III. 1992. Contribution of phenazine antibiotic biosynthesis to the ecological competence of fluorescent pseudomonads in soil habitats. Appl. Environ. Microbiol. 58:2616-2624.
65. McSpadden-Gardener, B. B. 1998. Assessing the potential of creating biased rhizospheres based on inositol rhizopines. Ph.D. Dissertation, Michigan State University, East Lansing, MI.
66. McSpadden-Gardener B. B., and de Bruijn F. J. 1998. Detection and isolation of novel rhizospine-catabolizing bacteria from the environment. Appl. Environ. Microbiol. 64:4944-4949.
67. Merril, C. R., Biswas, B., Carlton, R., Jensen, N. C., Creed, G. J., Zullo, S., and Adhya, S. 1996. Long-circulating bacteriophage as antibacterial agents. Proc. Natl. Acad. Sci. U.S.A. 93:3188-3192.
68. Miethling, R., Wieland, G., Backhaus, H., and Tebbe, C. C. 2000. Variation of microbial rhizosphere communities in response to crop species, soil origin, and inoculation with Sinorhizobium meliloti L33. Microb. Ecol. 40:43-56.
69. Miller, M. B., and Bassler, B. L. 2001. Quorum sensing in bacteria. Annu. Rev. Microbiol. 55:165-199.
70. Mirleau, P., Delorme, S., Philippot, L., Meyer, J.-M., Mazurier, S., and Lemanceau P. 2000. Fitness in soil and rhizosphere of Pseudomonas fluorescens C7R12 compared with a C7R12 mutant affected in pyoverdine synthesis and uptake. FEMS (Fed. Eur. Microbiol. Soc.) Microbiol. Ecol. 34:35-44.
71. Molyneux, R. J., Pan, Y. T., Goldmann, A., Tepfer, D. A., and Elbein, A. D. 1993. Calystegins, a novel class of alkaloid glycosidase inhibitors. Arch. Biochem. Biophys. 304:81-88.
72. Moore, L. W., Chilton, W. S., and Canfield, M. L. 1997. Diversity of opines and opine-catabolizing bacteria isolated from naturally occurring crown gall tumors. Appl. Environ. Microbiol. 63:201-207.
73. Munsch, P., and Olivier, J. M. 1995. Biocontrol of bacterial blotch of the cultivated mushroom with lyric pahges: Some practical considerations. Pages 595-602 in: Science and Cultivation of Edible Fungi. T. J. Elliott, ed. A. A. Balkema, Rotterdam, The Netherlands.
74. Munsch, P., Olivier, J. M., and Houdeau, G. 1991. Experimental control of bacterial blotch by bacteriophages. Pages 389-396 in: Science and Cultivation of Edible Fungi. M. J. Maher, ed. A. A. Balkema, Rotterdam, The Netherlands.
75. Murphy, P. J., Heycke, N., Banfalvi, Z., Tate, M. E., de Bruijn, F. J., Kondorosi, A., Tempé, J., and Schell, J. 1987. Genes for the catabolism and synthesis of an opine-like compound in Rhizobium meliloti are closely linked and on the Sym plasmid. Proc. Natl. Acad. Sci. U.S.A. 84:493-497.
76. Murphy, P. J., Trenz S. P., Grzemski W., de Bruijn F. J., and Schell, J. 1993. The Rhizobium meliloti rhizopine mos locus is a mosaic structure facilitating its symbiotic regulation. J. Bacteriol. 175:5193-5204.
77. Naseby, D. C., and Lynch, J. M. 1999. Effects of Pseudomonas fluorescens F113 on ecological functions in the pea rhizosphere are dependent on pH. Microb. Ecol. 37:248-256.
78. Nautiyal, C. S., Dion, P., and Chilton, W. S. 1991. Mannopine and mannopinic acid as substrates for Arthrobacter sp. strain MBA209 and Pseudomonas putida NA513. J. Bacteriol. 173:2833-2841.
79. O'Connell, K. P., Goodman, R. M., and Handelsman, J. 1996. Engineering the rhizosphere: Expressing a bias. Trends Biotechnol. 14:83-88
80. Oger, P., Petit, A., and Dessaux, Y. 1997. Genetically engineered plants producing opines alter their biological environment. Nature/Biotechnol. 15:369-372.
81. Oger, P., Mansouri, H., and Dessaux, Y. 2000. Effect of crop rotation and soil cover on alteration of the soil microflora generated by the culture of transgenic plants producing opines. Mol. Ecol. 9:881-890.
82. O'Sullivan, D. J., and O'Gara, F. 1992. Traits of fluorescent Pseudomonas spp. involved in suppression of plant pathogens. Microbiol. Rev. 56:662-676.
83. Parke, J. L. 1991. Root colonization by indigenous and introduced microorganisms. Pages 33-42, in: The Rhizosphere and Plant Growth. D. L. Keister and P. B. Cregan, eds. Kluwer Academic Publishers, Dordrecht, The Netherlands.
84. Parsek, M. R., and Greenberg, E. P. 2000. Acyl-homoserine lactone quorum sensing in gram-negative bacteria: A signaling mechanism involved in associations with higher organisms. Proc. Natl. Acad. Sci. U.S.A. 97:8789-8793.
85. Picard, C., Di Cello, F., Ventura, M., Fani, R., and Guckert, A. 2000. Frequency and biodiversity of 2,4-diacetylphloroglucinol-producing bacteria isolated from the maize rhizosphere at different stages of plant growth. Appl. Environ. Microbiol. 66:948-955.
86. Ranjard, L., Poly, F., Lata, J.-C., Mougel, C., Thioulouse, J., and Nazaret, S. 2001. Characterization of bacterial and fungal soil communities by automated ribosomal intergenic spacer analysis fingerprints: Biological and methodological variability. Appl. Environ. Microbiol. 67:4479-4487.
87. Reimmann, C., Ginet, N., Michel, L., Keel, C., Michaux, P., Krishnapillai, V., Zala, M., Heurlier, K., Triandafillu, K., Harms, H., Defago, G., and Haas, D. 2002. Genetically programmed autoinducer destruction reduces virulence gene expression and swarming motility in Pseudomonas aeruginosa PAO1. Microbiology 148:923-932
88. Rengel, Z., Ross, G., and Hirsch, P. 1998. Plant genotype and micronutrients status influence colonization of wheat roots by soil bacteria. J. Plant Nutr. 21:99-113.
89. Rice, S. A., Givskov, M., Steinberg, P., Kjelleberg, S. 1999. Bacterial signals and antagonists: the interaction between bacteria and higher organisms. J. Mol. Microbiol. Biotechnol. 1:23-31
90. Robson, N. D., Cox, A. R., McGowan, S. J., Bycroft, B. W., and Salmond, G. P. C. 1997. Bacterial N-acyl-homoserine lactone-dependent signalling and its potential biotechnological applications. Trends Biotechnol. 15:458-464.
91. Rossbach, S., Kulpa, D. A., Rossbach, U., and de Bruijn, F. J. 1994a. Molecular and genetic characterization of the rhizopine catabolism (mocABCR) genes of Rhizobium meliloti L5-30. Mol. Gen. Genet. 245:11-24.
92. Rossbach, S., McSpadden, B., Kulpa, D., and de Bruijn, F. J. 1994b. Rhizopine synthesis and catabolism genes for the creation of "biased rhizospheres" and a marker system to detect (genetically modified) microorganisms in the soil. Pages 223-244 in: Biotechnology Risk Assessment. M. Levin, C. Grim, and J. S. Angle, eds. University of Maryland Biotechnology Institute, College Park, MD, U.S.A.
93. Rossbach, S., McSpadden, B., Kulpa, D., Rasul, G., Ganoof, M., and de Bruijn, F. J. 1994c. Use of rhizopine synthesis and catabolism genes to monitor soil bacteria and to create biased rhizospheres. Mol. Ecol. 3:610-611.
94. Rossbach, S., McSpadden, B., Ganoff, M., and de Bruijn, F. J. 1995a. Rhizobium meliloti rhizopine catabolism genes: Distribution, role in competition and potential as marker gene to track microbes. Pages 180-188 in: Biotechnology Risk Assessment. M. Levin and J. S. Angle, eds. University of Maryland Biotechnology Institute, College Park, MD, U.S.A.
95. Rossbach, S., Rasul, G., Schneider, M., Eardly, B., and de Bruijn, F. J. 1995b. Structural and functional conservation of the rhizopine catabolism (moc) locus is limited to selected Rhizobium meliloti strains and unrelated to their geographical origin. Mol. Plant-Microbe Interact. 8:549-559.
96. Rovira, A. D. 1965a. Plant root exudates and their influence upon soil microorganisms. Pages 170-186 in: Ecology of Soil-Borne Plant Pathogens. K. F. Baker and W. C. Snyder, eds. University of California Press, Berkeley, U.S.A.
97. Rovira, A. D. 1965b. Interactions between plant roots and soil microorganisms. Annu. Rev. Microbiol. 19:241-266.
98. Rovira, A. D. 1991. Rhizosphere research: 85 years of progress and frustration. Pages 3-13 in: The Rhizosphere and Plant Growth. D. L. Keister and P. B. Cregan, eds. Kluwer Academic Publishers, Dordrecht, The Netherlands.
99. Savka, M. A. 1993. Validity of the opine concept in plant-bacterial interactions. Ph.D. dissertation. University of Illinois at Urbana-Champaign, IL.
100. Savka, M. A., and Binns A. N., 2000. Introduction of DNA into plants. Pages 159-192 in: Gene Transfer Methods: Introduction of Genes into Living Cells and Organisms. P. A. Norton, and L. F. Steel (eds.) Eaton Publishing, Natick, MA, U.S.A.
101. Savka, M. A., and Farrand S. K. 1992. Mannityl opine accumulation and exudation by transgenic tobacco. Plant Physiol. 98:784-789.
102. Savka, M. A., and Farrand, S. K. 1997. Modification of rhizobacterial populations by engineering bacterium utilization of a novel plant-produced resource. Nature/Biotechnol. 15:363-368.
103. Savka, M. A., Black, R. C., Binns, A. N., and Farrand, S. K. 1996. Translocation and exudation of tumor metabolites in crown gall tumors. Mol. Plant-Microbe Interact. 9:310-313.
104. Schippers, B., Bakker, A. W., and Bakker, P. A. H. M. 1987. Interactions of deleterious and beneficial rhizosphere microorganisms and the effect on cropping practices. Ann. Rev. Phytopathol. 25:339-358.
105. Siciliano, S. D., Theoret, C. M, de Freitas, J. R., Hucl, P. J., and Germida, J. J. 1998. Differences in the microbial communities associated with the roots of different cultivars of canola and wheat. Can. J. Microbiol. 44:844- 851.
106. Scherff, R. H. 1973. Control of bacterial blight of soybean by Bdellovibrio bacteriovorus. Phytopathology. 63:400-402
107. Shah S., Li J., Moffatt B. A., and Glick, B. R. 1998. Isolation and characterization of ACC deaminase genes from two different plant growth-promoting rhizobacteria. Can. J. Microbiol. 44:833-843.
108. Smalla, K., Wieland, G., Buchner, A., Zock, A., Parzy, J., Kaiser, S., Roskot, N., Heuer, H., and Berg, G. 2001. Bulk and rhizosphere soil bacterial communities studied by denaturing gradient gel electrophoresis: Plant-dependent enrichment and seasonal shifts revealed. Appl. Environ. Microbiol. 67:4742-4751.
109. Smidt, M. L., and Vidaver, A. K. 1982. Bacteriocin production by Pseudomonas syringae PsW-1 in plant tissue. Can. J. Microbiol. 28:600-604.
110. Soedarjo, M., and Borthakur, D. 1996. Mimosine produced by the tree-legume Leucaena provides growth advantages to some Rhizobium strains that utilize it as a source of carbon and nitrogen. Plant and Soil 186:87-92.
111. Soedarjo, M., and Borthakur, D. 1998. Mimosine, a toxin produced by the tree-legume Leucaena provides a nodulation competition advantage to mimosine-degrading Rhizobium strains. Soil Biol. Biochem. 30:1605-1613.
112. Stolp, H., and Petzold, H. 1962. Untersuchungenuber einen obligat parasitischen mikroorganismus mit lytischer aktivat fur Pseudomonas-bakterien. Phytopatho. Zeit. 45:364-390.
113. Stutz, E. W., Dófago, G., and Kern, H. 1986. Naturally occurring fluorescent pseudomonads involved in suppression of black rot of tobacco. Phytopathology 76:181-185.
114. Sun, X., Griffith, M., Pasternak, J. J., Glick, B. R. 1995. Low temperature growth, freezing survival, and production of antifreeze protein by the plant growth promoting rhizobacterium Pseudomonas putida GR12-2. Can. J. Microbiol. 41:776-784.
115. Suttle, C. A., Chan, A. M., and Cottrell, M. T. 1990. Infection of phytoplankton by viruses and reduction of primary productivity. Nature 347:467-469.
116. Tate, M. E., Ellis, J. G., Kerr, A., Tempé, J., Murrary, K. E., and Shaw, K. J. 1982. Agropine: A revised structure. Carbohydr. Res. 104:105-120.
117. Tempé, J., Petit, A., and Bannerot, H. 1982. Présence de substances semblables à des opines dans des nodosites de luzerne. C.R. Acad. Sc. Paris Serie III. 295:413-426.
118. Tepfer, D., Goldmann, A., Pamboukdjian, N., Maille, M., Lepingle, A., Chevalier, D., Denarié, J., and Rosenberg, C. 1988. A plasmid of Rhizobium meliloti 41 encodes catabolism of two compounds from root exudate of Calystegium sepium. J. Bacteriol. 170:1153-1161.
119. Thomashow, L. S., and Weller, D. M. 1988. Role of a phenazine antibiotic from Pseudomonas fluorescens in biological control of Gaeumannomyces graminis var. tritici. J. Bacteriol. 170:3499-508.
120. Tremblay, G., Gagliardo, R., Chilton, M.-D., and Dion, P. 1987. Diversity among opine-utilizing bacteria: identification of coryneform isolates. Appl. Environ. Microbiol. 53:1519-1524.
121. Uematsu, T. 1980. Ecology of Bdellovibrio parasitic to rice bacterial leaf blight pathogen, Xanthomonas oryzae. Rev. Plant Protec. Res. 13:12-26.
122. Van Loon, L. C., Bakker, P. A. H. M., and Pieterse, C. M. J. 1998. Systemic resistance induced by rhizosphere bacteria. Ann. Rev. Phytopathology 36:453-483.
123. Weil, J., Fray, R. G., Beck yon Bodman, S., and Savka M. A. 2001. Multiple bacterial quorum-sensing signals produced by transgenic plants. Page 169 in: Plant Physiology Abstract Supplement, abstr. 830.
124. Westover, K. M, Kennedy, A. C, and Kelly, S. E. 1997. Patterns of rhizosphere microbial community structure associated with co-occuring plant species. J. Ecol. 85:863-873.
125. Wexler, M., Gordon, D. M., and Murphy, P. J. 1995. The distribution of inositol rhizopine genes in Rhizobium populations. Soil Biol. Biochem. 27: 531-537.
126. Whipps, J. M., and Lynch, J. M. 1985. Energy losses by the plant in rhizodeposition. Ann. Proc. Phytochem. Soc. Eur. 26:59-71.
127. Whitehead, N. A., Barnard, A. M. L., Slater, H., Simpson, N. J. L., and Salmond, G. P. C. 2001. Quorum-sensing in gram-negative bacteria. FEMS (Fed. Eur. Microbiol. Soc.) Microbiol. Rev. 25:365-404.
128. Wilson, M., and Lindow, S. E. 1994. Coexistence among epiphytic bacterial populations mediated through nutritional resource partitioning. Appl. Environ. Microbiol. 60:4468-4477.
129. Wilson, M., Savka, M. A., Hwang, I., Farrand, S. K., and Lindow, S. E. 1995. Altered epiphytic colonization of mannityl opine-producing transgenic tobacco plants by a mannityl opine-catabolizing strain of Pseudomonas syringae. Appl. Environ. Microbiol. 61:2151-2158.
130. Wood, D. W., Gong, F., Daykin, M. M., Williams, P., and Pierson, L. S., III. 1997. N-acyl-homoserine lactone-mediated regulation of phenazine gene expression by Pseudomonas aureofaciens 30-84 in the wheat rhizosphere. J. Bacteriol. 179:7663-7670.
131. Zhang, H. B., Wang, L. H., and Zhang, L. H. 2002. Genetic control of quorum-sensing signal turnover in Agrobacterium tumefaciens. Proc. Natl. Acad. Sci. U.S.A. 99:4638-4643.
132. Zupan, J. R., Muth, T. R., Draper, O., and Zambryski, P. C. 2000. The transfer of DNA from Agrobacterium tumefaciens into plants: A feast of fundamental insights. Plant J. 23:11-28.