Plant-endophyte symbiosis, an ecological perspective

Applied Microbiology and Biotechnology

Volumn 99, Issue 7, 2015, Pages 2955-2965

  Wani, Zahoor Ahmed ^a,c   Ashraf, Nasheeman ^b,c   Mohiuddin, Tabasum ^b,c   Riyaz Ul Hassan, Syed ^a,c  

^a CSIR INDIAN INSTITUTE OF INTEGRATIVE MEDICINE   (India)

^b Indian Institute of Integrative Medicines   (India)

^c ACADEMY OF SCIENTIFIC AND INNOVATIVE RESEARCH ACSIR   (India)

Author keywords

Endophytes; Endophytism; Multitrophic interaction; Phytoremediation; Plant adaptation; Systems biology approach

Indexed keywords

AGRICULTURE; BIOLOGY; BIOREMEDIATION; ECOLOGY; GENE EXPRESSION;

ENDOPHYTES; ENDOPHYTISM; MULTITROPHIC INTERACTION; PHYTOREMEDIATION; PLANT ADAPTATION; SYSTEMS BIOLOGY;

PLANTS (BOTANY);

ENDOPHYTE; GENE EXPRESSION; HOST RANGE; METABOLISM; NONHUMAN; PLANT DEVELOPMENT; PLANT ECOLOGY; PLANT ENDOPHYTE SYMBIOSIS; PLANT GROWTH; PLANT METABOLISM; PLANT MICROORGANISM INTERACTION; PLANT PRODUCT; PLANT STRESS; REVIEW; SYMBIOSIS; ADAPTATION; BIOTECHNOLOGY; CLASSIFICATION; ECOSYSTEM; GENETICS; MICROBIOLOGY; PHYSIOLOGY; PLANT; PROCEDURES;

ADAPTATION, PHYSIOLOGICAL; BIOTECHNOLOGY; ECOSYSTEM; ENDOPHYTES; PLANTS; SYMBIOSIS;

EID: 84925489631     PISSN: 01757598     EISSN: 14320614     Source Type: Journal    
DOI: 10.1007/s00253-015-6487-3     Document Type: Review

References (117)

1. Albrectsen BR, Björkén L, Varad A, Hagner A, Wedin M, Karlsson J, Jansson S (2010) Endophytic fungi in European aspen (Populus tremula) leaves—diversity, detection, and a suggested correlation with herbivory resistance. Fungal Divers 41:17–28
2. Aly AH, Debbab A, Proksch P (2011) Fungal endophytes: unique plant inhabitants with great promises. Appl Microbiol Biotechnol 90:1829–1845
3. Arnold AE (2007) Understanding the diversity of foliar fungal endophytes: progress, challenges, and frontiers. Fungal Biol Rev 21:51–66
4. Arnold AE, Lutzoni F (2007) Diversity and Host range of foliar fungal endophytes: Are tropical leaves biodiversity hotspots? Ecology 88:541–549
5. Backman PA, Sikora RA (2008) Endophytes: An emerging tool for biological control. Biol Control 46:1–3
6. Bao X, Roossinck MJ (2013) Multiplexed interactions: viruses of endophytic fungi. Adv Virus Res 86:37–57
7. Behie SW, Zelisko PM, Bidochka MJ (2012) Endophytic insect-parasitic fungi translocate nitrogen directly from insects to plants. Science 336:1576–1577
8. Berg G (2009) Plant-microbe interactions promoting plant growth and health: perspectives for controlled use of microorganisms in agriculture. Appl Microbiol Biotechnol 84:11–18
9. Bitas V, Kim HS, Bennett JW, Kang S (2013) Sniffing on microbes: diverse roles of microbial volatile organic compounds in plant health. Mol Plant Microbe Interact 26:835–843
10. Boller T (1995) Chemoperception of microbial signals in plant cells. Annu Rev Plant Physiol Plant Mol Biol 46:189–214
11. Botella L, Díez JJ (2011) Phylogenic diversity of fungal endophytes in Spanish stands of Pinus halepensis. Fungal Divers 47:9–18
12. Brader G, Compant S, Mitter B, Trognitz F, Sessitsch A (2014) Metabolic potential of endophytic bacteria. Curr Opin Biotechnol 27:30–37
13. Chen L, Zhang QY, Jia M, Ming QL, Yue W, Rahman K, Qin LP, Han T (2014) Endophytic fungi with antitumor activities: Their occurrence and anticancer compounds. Crit Rev Microbiol 24:1–20
14. Cheplick GP (2007) Costs of fungal endophyte infection in Lolium perenne genotypes from Eurasia and North Africa under extreme resource limitation. Environ Exp Bot 60:202–210
15. Christensen MJ, Bennett RJ, Ansari HA, Koga H, Johnson RD, Bryan GT, Simpson JP, Koolaard WR, Nickless EM, Voisey CR (2008) Epichloë endophytes grow by intercalary hyphal extension in elongating grass leaves. Fungal Genet Biol 45:84–93
16. Conn VM, Walker AR, Franco CM (2008) Endophytic actinobacteria induces defense pathways in Arabidopsis thaliana. Mol Plant Microbe Interact 21:208–218
17. Deshmukh S, Hückelhoven R, Schäfer P, Imani J, Sharma M, Weiss M, Waller F, Kogel KH (2006) The root endophytic fungus Piriformospora indica requires host cell death for proliferation during mutualistic symbiosis with barley. Proc Natl Acad Sci 103:18450–18457
18. Doty SL, Oakley B, Xin G, Kang JW, Singleton G, Khan Z, Vajzovic A, Staley JT (2009) Diazotrophic endophytes of native black cottonwood and willow. Symbiosis 47:23–33
19. Durrant WE, Dong X (2004) Systemic acquired resistance. Annu Rev Phytopathol 42:185–209
20. Eaton CJ, Cox MP, Scott B (2011) What triggers grass endophytes to switch from mutualism to pathogenism? Plant Sci 180:190–195
21. Edwards J, Johnson C, Santos-Medellín C, Lurie E, Podishetty NK, Bhatnagar S, Eisen JA, Sundaresan V (2014) Structure, variation, and assembly of the root-associated microbiomes of rice. Proc Natl Acad Sci. doi:10.1073/pnas.1414592112
22. Ek-Ramos MJ, Zhou W, Valencia CU, Antwl JB, Kalns LL, Morgan GD, Kerns DL, Sword GA (2013) Spatial and Temporal Variation in Fungal Endophyte Communities Isolated from Cultivated Cotton (Gossypium hirsutum). PLoS One 8:e66049
23. Elmi AA, West CP (1995) Endophyte infection effects on stomatal conductance, osmotic adjustment and drought recovery of tall fescue. New Phytol 131:61–67
24. Elvira-Recuenco M, Van Vuurde JWL (2000) Natural incidence of endophytic bacteria in pea cultivars under field conditions. Can J Microbiol 46:1036–1041
25. Ezra D, Hess WH, Strobel GA (2004) New endophytic isolates of M. albus, a volatile antibiotic-producing fungus. Microbiol 150:4023–4031
26. Fahey JW, Dimock MB, Tomasino SF, Taylor JM, Carlson PS (1991) Genetically engineered endophytes as biocontrol agents: a case study in industry. Microb Ecol Leaves 401–411
27. Freeman S, Rodriguez RJ (1993) Genetic conversion of a fungal pathogen to a nonpathogenic, endophytic mutualist. Science 260:75–78
28. Friesen ML (2012) widespread fitness alignment in the legume–rhizobium symbiosis. New Phytol 194:1096–1111
29. Glazebrook J (2005) Contrasting Mechanisms of Defense against Biotrophic and Necrotrophic Pathogens. Annu Rev Phytopathol 43:205–227
30. Griffin MA, Spakowicz DJ, Gianoulis TA, Strobel SA (2010) Volatile organic compound production by organisms in the genus Ascocoryne and a re-evaluation of myco-diesel production by NRRL 50072. Microbiol 156:3814–3829
31. Gunatilaka AAL (2006) Natural products from plant-associated microorganisms: distribution, structural diversity, bioactivity, and implication of their occurrence. J Nat Prod 69:509–526
32. Gundel PE, Martinez-Ghersa MA, Omacini M, Cuyeu R, Pagano E, Rios R, Ghersa CM (2012) Mutualism effectiveness and vertical transmission of symbiotic fungal endophytes in response to host genetic background. Evol Appl 5:838–884
33. Heath KD (2010) Intergenomic epistasis and co-evolutionary constraint in plants and rhizobia. Evolution 64:1446–1458
34. Heil M, Bostock RM (2002) Induced systemic resistance (ISR) against pathogens in the context of Induced Plant defences. Ann Bot 89:503–512
35. Herrera J, Khidir HH, Eudy DM, Porras-Alfaro A, Natvig DO, Sinsabaugh RL (2010) Shifting fungal endophyte communities colonize Bouteloua gracilis: effect of host tissue and geographical distribution. Mycologia 102:1012–1026
36. Hesse U, Schöberlein W, Wittenmayer L, Förster K, Warnstorff K, Diepenbrock W, Merbach W (2003) Effects of Neotyphodium endophytes on growth, reproduction and drought-stress tolerance of three Lolium perenne L. genotypes. Grass Forage Sci 58:407–415
37. Higgins KL, Arnold AE, Coley P, Kursar T (2014) Communities of fungal endophyte in tropical forest grasses: highly diverse host- and habitat generalists characterized by strong spatial structure. Fungal Ecol 8:1–11
38. Iqbal J, Nelson JA, McCulley RL (2013) Fungal endophyte presence and genotype affect plant diversity and soil-to-atmosphere trace gas fluxes. Plant Soils 364:15–27
39. Khan AL, Hamayun M, Kang SM, Kim YH, Jung HY, Lee JH, Lee IJ (2012) Endophytic fungal association via gibberellins and indole acetic acid can improve plant growth under abiotic stress: an example of Paecilomyces formosus LHL10. BMC Microbiol 12:3
40. Kiers ET, Denison RF (2008) Sanctions, cooperation, and the stability of plant rhizosphere mutualisms. Annu Rev Ecol Evol Syst 39:215–236
41. Kiers ET, Ratcliff WC, Denison RF (2013) Single-strain inoculation may create spurious correlations between legume fitness and rhizobial fitness. New Phytol 198:4–6
42. Kogel KH, Franken P, Huckelhoven R (2006) Endophyte or parasite - what decides? Curr Opin Plant Biol 9:358–363
43. Kuldau G, Bacon C (2008) Clavicipitaceous endophytes: their ability to enhance resistance of grasses to multiple stresses. Biol Control 46:57–71
44. Kusari S, Spiteller M (2012) Are we ready for industrial production of bioactive plant secondary metabolites utilizing endophytes? Nat Prod Rep 28:1203–1207
45. Kusari S, Zuhlke S, Spiteller M (2009) An endophytic fungus from Camptotheca acuminate that produces camptothecin and analogues. J Nat Prod 72:2–7
46. Kusari S, Hertweck C, Spiteller M (2012) Chemical ecology of endophytic fungi: origins of secondary metabolites. Chem Biol 19:792–798
47. Kusari S, Singh S, Jayabaskaran C (2014) Biotechnological potential of plant-associated endophytic fungi: hope versus hype. Trends Biotechnol 32:297–303
48. Lahrmann U, Dinga Y, Banhara A, Rath M, Hajirezaeid MR, Döhlemanna S, Wirénd NV, Parniskeb M, Zuccaroa A (2013) Host-related metabolic cues affect colonization strategies of a root endophyte. Proc Natl Acad Sci 110:13965–13970
49. Lebeis SL (2014) The potential for give and take in plant–microbiome relationships. Front Plant Sci 5:287
50. Li TY, Zeng HL, Ping Y, Lin H, Fan XL, Guo ZG, Zhang CF (2007) Construction of a stable expression vector for Leifsonia xyli subsp. cynodontis and its application in studying the effect of the bacterium as an endophytic bacterium in rice. FEMS Microbiol Lett 267:176–183
51. Li CH, Shi L, Han Q, Hu HL, Zhao MW, Tang CM, Li SP (2012) Biocontrol of verticillium wilt and colonization of cotton plants by an endophytic bacterial isolate. J Appl Microbiol 113:641–651
52. Malinowski DP, Belesky DP (2006) Ecological importance of Neotyphodium spp. grass endophytes in agroecosystems. Grassl Sci 52:1–14
53. Mallette ND, Knighton WB, Strobel GA, Carlson RP, Peyton BM (2012) Resolution of volatile fuel compound profiles from Ascocoryne sarcoides: a comparison by proton transfer reaction-mass spectrometry and solid phase microextraction gas chromatography–mass spectrometry. AMB Express 2:23
54. Márquez LM, Redman RS, Rodriguez RJ, Roossinck MJ (2007) A virus in a fungus in a plant—three way symbiosis required for thermal tolerance. Science 315:513–515
55. Mathys J, De-Cremer K, Timmermans P, Kerckhove SV, Lievens B, Vanhaecke M, Cammue BP, De-Coninck B (2012) Genome wide characterization of ISR induced in Arabidopsis thaliana by Trichoderma hamatumT382 against Botrytis cinerea infection. Front Plant Sci 3:108
56. Mendoza AR, Sikora RA (2009) Biological control of Radopholus similis by co application of the mutualistic endophyte Fusarium oxysporum strain 162, the egg pathogen Paecilomyces lilacinuss train 251 and the antagonistic bacteria Bacillus firmus. Bio Control 54:263–272
57. Mitter B, Petric A, Shin MW, Chain PS, Hauberg-Lotte L, Reinhold Hurek B, Nowak J, Sessitsch A (2013) Comparative genome analysis of Burkholderia phytofirmans PsJN reveals a wide spectrum of endophytic lifestyles based on interaction strategies with host plants. Front Plant Sci 4:120
58. Moricca S, Ragazzi A (2008) Fungal endophytes in Mediterranean oak forests: A lesson from Disculaquercina. Phytopathology 98:380–386
59. Mostert L, Crous PW, Petrini O (2000) Endophytic fungi associated with shoots and leaves of Vitis vinifera, with specific reference to the Phomopsis viticola complex. Sydowia 52:46–58
60. Mousa WK, Raizada MN (2013) The diversity of anti-microbial secondary metabolites produced by fungal endophytes: an interdisciplinary perspective. Front Microbiol 4:65
61. Nagabhyru P, Dinkins RD, Wood CL, Bacon CW, Schardl CL (2013) Tall fescue endophyte effects on tolerance to water-deficit stress. BMC Plant Biol 13:127
62. Newman LA, Reynolds CM (2005) Bacteria and phytoremediation: New uses for endophytic bacteria in plants. Trends Biotechnol 23:6–8
63. Ownley BH, Gwinn KD, Vega FE (2010) Endophytic fungal entomopathogens with activity against plant pathogens: ecology and evolution. Bio Control 55:113–128
64. Partida-Martínez LP, Heil M (2011) The microbe-free plant: fact or artifact? Front Plant Sci 2:100
65. Petrini O (1991) Fungal endophytes of tree leaves. In: Andrews JH, Hirano SS (eds) Microbial Ecology of Leaves. Springer-Verlag, New York, USA, p 179
66. Porras-Alfaro A, Bayman P (2011) Hidden fungi, emergent properties: endophytes and microbiomes. Annu Rev Phytopathol 49:291–315
67. Qawasmeh A, Objed HK, Raman A, Wheatley W (2012) Influence of fungal endophyte infection on phenolic content and antioxidant activity in grasses: interaction between Lolium perenne and different strains of Neotyphodium lolii. J Agric Food Chem 60:3381–3388
68. Rasmussen S, Parsons AJ, Popay A, Xue H, Newman JA (2008) Plant-endophyte-herbivore interactions: More than just alkaloids? Plant Signal Behav 3:974–977
69. Redecker D, Kodner R, Graham LE (2000) Glomalean Fungi from the Ordovician. Science 289:1920–1921
70. Redman RS, Dunigan DD, Rodriguez RJ (2001) Fungal symbiosis: from mutualism to parasitism, who controls the outcome, host or invader? New Phytol 151:705–716
71. Redman RS, Sheehan KB, Stout RG, Rodriguez RJ, Henson JM (2002) Thermotolerance conferred to plant host and fungal endophyte during mutualistic symbiosis. Science 298:1581
72. Reinhold-Hurek B, Hurek T (2011) Living in side plants: bacterial endophytes. Curr Opin Plant Biol 14:435–443
73. Rey T, Schornack S (2013) Interactions of beneficial and detrimental root-colonizing filamentous microbes with plant hosts. Genome Biol 14:121
74. Riyaz-Ul-Hassan S, Strobel A, Booth E, Knighton B, Floerchinger C, Sears J (2012) Modulation of volatile organic compound formation in the Mycodiesel-producing endophyte Hypoxylon sp. CI-4. Microbiology 158:465–473
75. Riyaz-Ul-Hassan S, Strobel G, Geary B, Sears J (2013) An endophytic Nodulisporium sp. from Central America producing volatile organic compounds with both biological and fuel potential. J Microbiol Biotechnol 23:29–35
76. Rodriguez RJ, Roossinck M (2012) Viruses, fungi and plants: cross-kingdom communication and mutualism. Biocomm Fungi. doi:10.1007/978-94-007-4264-2-14
77. Rodriguez RJ, Henson J, Van Volkenburgh E, Hoy M, Wright L, Beckwith F, Kim Y, Redman RS (2008) Stress tolerance in plants via habitat-adapted symbiosis. ISME J 2:404–416
78. Rodriguez RJ, White JF Jr, Arnold AE, Redman RS (2009) Fungal endophytes: diversity and functional roles. New Phytol 182:314–330
79. Rosenblueth M, Martínez-Romero E (2006) Bacterial Endophytes and Their Interactions with Hosts. Mol Plant Microbe Interact 19:827–837
80. Rudgers JA, Miller TE, Ziegler SM, Craven KD (2012) There are many ways to be a mutualist: endophyte fungus reduces plant survival but increases population growth. Ecology 93:565–574
81. Ryan RP, Germaine K, Franks AA, Ryan DJ, Dowling DN (2008) Bacterial endophytes: recent developments and applications. FEMS Microbiol Lett 278:1–9
82. Saikkonen K, Faeth SH, Helander M, Sullivan TJ (1998) Fungal endophytes: a continuum of interactions with host plants. Annu Rev Ecol Syst 29:319–343
83. Saikkonen K, Wäli P, Helander M, Faeth SH (2004) Evolution of endophyte-plant symbioses. Trends Plant Sci 9:275–280
84. Saikkonen K, Gundel PE, Helander M (2013) Chemical ecology mediated by fungal endophytes in grasses. J Chem Ecol 39:962–968
85. Schardl CL, Liu J, White JK, Finkel RA, An Z, Siegel M (1991) Molecular phylogenetic relationship of non-pathogenic grass mycosymbionts and clavicipitaceous plant pathogens. Plant Syst Evol 178:27–41
86. Schardl CL, Leuchtmann A, Spiering MJ (2004) Symbioses of grasses with seedborne fungal endophytes. Annu Rev Plant Biol 55:315–340
87. Scherwinski K, Grosch R, Berg G (2008) Effect of bacterial antagonists on lettuce: active biocontrol of Rhizoctonia solani and negligible, short-term ejects on non target microorganisms. FEMS Microbiol Ecol 64:106–116
88. Schirmbock M, Lorito M, Wang ML, Hayes MK, Atac IA, Scala F, Harman GE, Kubicek CP (1994) Parallel formation and synergism of hydrolytic enzymes and peptaibol antibiotics, molecular mechanisms involved in the antagonistic action of Trichoderma harzianum against phytopathogenic fungi. Appl Environ Microbiol 4364–4370
89. Schulz B, Boyle C (2005) The endophytic continuum. Mycol Res 109:661–687
90. Selim KA, El-Beih AA, AbdEl-Rahman TM, El-Diwany A (2012) Biology of Endophytic Fungi. Curr Res Environ Appl Mycol 2:31–82
91. Seo DJ, Nguyen DM, Song YS, Jung WJ (2012) Induction of defense response against Rhizoctonia solani in cucumber plants by endophytic bacterium Bacillus thuringiensis GS1. J Microbiol Biotechnol 22:407–415
92. Sessitsch A, Hardoim P, Doring J, Weilharter A, Krause A, Woyke T, Mitter B, Houberg-lotte L, Friedrich F, Rahalkar M, Hurek T, Sarkar A, Bodrossy L, van Overbeek L, Brar D, van Elsas JD, Reinhold-Hurek B (2012) Functional characteristics of an endophyte community colonizing rice roots as revealed by metagenomic analysis. Mol Plant Microbe Interact 25:28–36
93. Sherameti I, Shahollari B, Venus Y, Altschmied L, Varma A, Oelmuller R (2005) The endophytic fungus Piriformospora indica stimulates the expression of nitrate reductase and the starch-degrading enzyme glucan-water dikinase in tobacco and Arabidopsis roots through a homeodomain transcription factor which binds to a conserved motif in their promoters. J Biol Chem 280:26241–26247
94. Sherameti I, Tripathi S, Varma A, Oelmüller R (2008) The root-colonizing endophyte Piriformospora indica confers drought tolerance in Arabidopsis by stimulating the expression of drought stress–related genes in leaves. Mol Plant Microbe Interact 21:799–800
95. Sikora RA, ZumFelde A, Mendoza A, Menjivar R, Pocasangre L (2010) In planta suppressiveness to nematodes and long-term root health stability through biological enhancement - do we need a cocktail? Acta Hort 879:553–560
96. Singh LP, Gill SG, Tuteja N (2011) Unraveling the role of fungal symbionts in plant abiotic stress tolerance. Plant Signal Behav 6:175–191
97. Singh RK, Malik N, Singh S (2013) Improved nutrient use efficiency increases plant growth of rice with the use of IAA-overproducing strains of endophytic Burkholderia cepacia strain RRE25. Microb Ecol 66:375–384
98. Soliman SSM, Trobacher CP, Tsao R, Greenwood JS, Raizada MN (2013) A fungal endophyte induces transcription of genes encoding a redundant fungicide pathway in its host plant. BMC Plant Biol 13:93
99. Stepniewska Z, Kuzniar A (2013) Endophytic microorganisms–promising applications in bioremediation of greenhouse gases. Appl Microbiol Biotechnol 97:9589–9596
100. Straub D, Rothballer M, Hartmann A, Ludewig U (2013) The genome of the endophytic bacterium H. frisingense GSF30T identifies diverse strategies in the Herbaspirillum genus to interact with plants. Front Microbiol 4:168
101. Strobel G (2006) Muscodor albus and its biological promise. J Ind Microbiol Biotechnol 33:514–522
102. Strobel GA (2015) Bioprospecting-fuels from fungi. Biotechnol Lett. doi:10.1007/s10529-015-1773-9
103. Strobel G, Daisy B, Castillo U, Harper J (2004) Natural products from endophytic microorganisms. J Nat Prod 67:257–268
104. Strobel GA, Knighton B, Kluck K, Ren Y, Livinghouse T, Griffen M, Daniel Spakowicz D, Sears J (2008) The production of myco-diesel hydrocarbons and their derivatives by the endophytic fungus Gliocladium roseum (NRRL 50072). Microbiology 154:3319–3328
105. Tanaka A, Christensen MJ, Takemoto D, Park P, Scott B (2006) Reactive oxygen species play a role in regulating a fungus-perennial ryegrass mutualistic interaction. Plant Cell 18:1052–1066
106. Tikhonovich IA, Provorov NA (2009) From plant–microbe interactions to symbiogenetics: a universal paradigm for the interspecies genetic integration. Ann Appl Biol 154:341–350
107. Ulrich K, Ulrich A, Ewald D (2008) Diversity of endophytic bacterial communities in poplar grown under field conditions. FEMS Microbiol Ecol 63:169–180
108. Van Bael SA, Estrada C, Rehner SA, Santos JF, Wcislo WT (2012) Leaf endophyte load influences fungal garden development in leaf-cutting ants. BMC Ecol 12:23
109. Van der Heijden MGA, Engel RS, Riedl R, Siegrist S, Neudecker A, Ineichen, Boller KT, Wiemken A, Sanders IA (2006) The mycorrhizal contribution to plant productivity, plant nutrition and soil structure in experimental grassland. New Phytol 172:739–752
110. Vandenkoornhuyse P, Baldauf SL, Leyval C, Straczek J, Young JP (2002) Extensive fungal diversity in plant roots. Science 295:2051
111. Vega FE, Simpkins A, Aime MC, Posada F, Peterson SW, Rehner SA, Infante F, Castillo A, Arnold AE (2010) Fungal endophyte diversity in coffee plants from Colombia, Hawai’i, Mexico and Puerto Rico. Fungal Ecol 3:122–138
112. Wade MJ (2007) The co-evolutionary genetics of ecological interactions. Nat Rev Genet 8:185–195
113. Waller F, Achatz B, Baltruschat H, Fodor J, Becker K, Fischer M, Heier T, Huckelhoven R, Neumann C, von Wettstein D, Franken P, Kogel KH (2005) The endophytic fungus Piriformospora indica reprograms barley to salt-stress tolerance, disease resistance, and higher yield. Proc Natl Acad Sci U S A 102:13386–13391
114. Waqas M, Khan AL, Lee IJ (2014) Bioactive chemical constituents produced by endophytes and effects on rice plant growth. J Plant Interact 9:478–487
115. Wheatley RE (2002) The consequences of volatile organic compound mediated bacterial and fungal interactions. Antonie Van Leeuwenhoek 81:357–364
116. White JF Jr, Torres MS (2010) Is plant endophyte-mediated defensive mutualism the result of oxidative stress protection? Physiol Plant 138:440–446
117. Yadav V, Kumar M, Deep DK, Kumar H, Sharma R, Tripathi T, Tuteja N, Saxena AK, Johri AK (2010) A phosphate transporter from the root endophytic fungus Piriformospora indica plays a role in phosphate transport to the host plant. J Biol Chem 285:26532–26544