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Rhizobacterial-plant interactions: Strategies ensuring plant growth promotion under drought and salinity stress

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Relation http://oar.icrisat.org/9815/
http://dx.doi.org/10.1016/j.agee.2016.06.031
10.1016/j.agee.2016.06.031
 
Title Rhizobacterial-plant interactions: Strategies ensuring plant growth promotion under drought and salinity stress
 
Creator Kaushal, M
Wani, S P
 
Subject Abiotic Stress
Crop Improvement
Drought Tolerance
Drylands Agriculture
Drought
Drylands
 
Description Drought and salinity are major environmental stresses resulting in secondary stresses such as osmotic and oxidative stress (common to both stresses) as well as ionic stress (during salinity) causing alterations in physiological, biochemical and molecular processes in plants resulting in substantial loss to crop productivity. The major physiological parameters studied in plants during stressed conditions are malondialdehyde (MDA) content and relative electrical conductivity in leaves, relative water content (RWC), stomatal conductance (gs), Chl content and Chl-fluorescence. Plants inoculated with plant growth promoting rhizobacteria (PGPR) induce morphological and biochemical modifications resulting in enhanced tolerance to abiotic stresses defined as induced systemic tolerance (IST). Molecular approaches such as RNA differential display (RNA-DD), reverse transcriptase PCR (RT-PCR) microarray analysis, real time PCR, differential display PCR (DD-PCR) and illumina sequencing revealed PGPR inoculation caused upregulation of drought stress related genes such as ERD15 (Early Response to Dehydration 15) and ABA-responsive gene, RAB18 in Arabidopsis genes, APX1 (ascorbate peroxidise), SAMS1 (S-adenosyl-methionine synthetase), and HSP17.8 (heat shock protein) in leaves of wheat, Cadhn (dehydrin-like protein), VA (Vacuolar ATPase), sHSP (Plant small heat shock proteins) and CaPR-10 (Pathogenesis-related proteins) in pepper, dehydration responsive element binding protein (DREB2A), catalase (CAT1) and dehydrin (DHN) in mung, salt stress responsive genes such as RAB18 (LEA), RD29A, RD29B regulons of ABRE (ABA-responsive elements) and DRE (dehydration responsive element) in Arabidopsis.
 
Publisher Elsevier B.V.
 
Date 2016-09
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/9815/1/Rhizobacterial-plant%20interactions.pdf
Kaushal, M and Wani, S P (2016) Rhizobacterial-plant interactions: Strategies ensuring plant growth promotion under drought and salinity stress. Agriculture, Ecosystems & Environment, 231. pp. 68-78. ISSN 01678809