Piriformospora indica-mediated salinity tolerance in Aloe vera plantlets

Piriformospora indica, a root endophytic fungus, has been reported to promote growth of many plants under normal condition and allow the plants to survive under stress conditions. However, its impact on an important medicinal plant Aloe vera L. has not been well studied. Therefore, this study was un...

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Bibliographic Details
Published in:Symbiosis (Philadelphia, Pa.) Pa.), 2017-06, Vol.72 (2), p.103-115
Main Authors: Sharma, Priyanka, Kharkwal, Amit C., Abdin, M. Z., Varma, Ajit
Format: Article
Language:English
Subjects:
Biomass
Biomedical and Life Sciences
Developmental Biology
Ecology
Endophytes
Evolutionary Biology
Flavonoids
Fungi
Life Sciences
Medicinal plants
Microbiology
Oxidative stress
Phenolic compounds
Phenols
Plant Sciences
Plantlets
Roots
Saline water
Salinity
Salinity effects
Salinity tolerance
Shoots
Sodium chloride
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Summary:Piriformospora indica, a root endophytic fungus, has been reported to promote growth of many plants under normal condition and allow the plants to survive under stress conditions. However, its impact on an important medicinal plant Aloe vera L. has not been well studied. Therefore, this study was undertaken to investigate the effect of P. indica on salinity stress tolerance of A. vera plant. P. indica inoculated and non-inoculated A. vera plantlets were subjected to four levels of salinity treatment- 0, 100, 200 and 300 mM NaCl. The salinity stress decreased the ability of the fungus to colonize roots of A. vera but the interaction of A. vera with P. indica resulted in an overall increase in plant biomass and greater shoot and root length as well as number of shoots and roots. The photosynthetic pigment ( Chl a, Chl b and total Chl ) and gel content were significantly higher for the fungus inoculated A. vera plantlets, at respective salinity concentrations. Furthermore, the inoculated plantlets had higher phenol, flavonoid, flavonol, aloin contents and radical scavenging activity at all salinity concentrations. The higher phenolic and flavonoid content may help the plants ameliorate oxidative stress resulting from high salinity.
ISSN:0334-5114
1878-7665
DOI:10.1007/s13199-016-0449-0