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Ameliorative symbiosis of endophyte (Penicillium funiculosum LHL06) under salt stress elevated plant growth of Glycine max L.
- Source :
-
Plant Physiology & Biochemistry . Aug2011, Vol. 49 Issue 8, p852-861. 10p. - Publication Year :
- 2011
-
Abstract
- Abstract: Experiments were conducted to investigate the role of a newly isolated endophytic fungus GMC-2A on physiology of host plant (Glycine max. L cv. Hwangkeum-kong) growing under salinity stress. GMC-2A was identified as a new strain of Penicillium funiculosum on the basis of sequence homology and phylogenetic analysis of D1/D2 regions of 28S rDNA. Preliminary screening experiment showed that the culture filtrate (CF) of GMC-2A promoted the growth of Waito-C, a dwarf gibberellin (GA) biosynthesis mutant rice cultivar. Analysis of fungal CF revealed the presence of GAs (GA1 1.53ng/ml; GA4 9.34ng/ml; GA8 1.21ng/ml; GA9 37.87ng/ml) and indole acetic acid (14.85μg/ml). GMC-2A also showed high phosphate solubilization of tricalcium phosphate. Besides that, GMC-2A application enhanced soybean seed germination as compared to control. Under salinity stress (70 and 140mM), GMC-2A significantly promoted the soybean growth attributes (shoot length, shoot fresh/dry biomass, chlorophyll content, photosynthesis rate and leaf area) in comparison to control treatments. We also observed low endogenous abscisic acid and elevated jasmonic acid contents in GMC-2A treated plants under salt stress. GMC-2A treatment significantly enhanced levels of isoflavones (34.22% and 75.37%) under salinity stress as compared to control. In conclusion, P. funiculosum LHL06 has significantly ameliorated the adverse effects of salinity induced abiotic stress, and re-programmed soybean to higher growth and isoflavone biosynthesis. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09819428
- Volume :
- 49
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Plant Physiology & Biochemistry
- Publication Type :
- Academic Journal
- Accession number :
- 63187535
- Full Text :
- https://doi.org/10.1016/j.plaphy.2011.03.005