NDLI: Role of Plant Growth Promoting Rhizobacteria in Mitigating Salt Stress

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Role of Plant Growth Promoting Rhizobacteria in Mitigating Salt Stress

Content Provider	Scilit
Author	Chandra, Priyanka Singh, Awtar Choudhary, Madhu Yadav, R. K.
Copyright Year	2021
Description	Soil salinity is one of the major environmental stresses affecting crop productivity and soil health drastically, particularly in arid and semi-arid areas. Most of the vegetable crops being salt sensitive, grow poorly in saline and alkaline soils. Soil salinity affects crops mainly due to the osmotic stress and excessive accumulation of toxic ions (Na+, Cl-, and SO42-), whereas alkali soils are generally characterized by poor physical conditions due to high concentrations of bicarbonate (HCO3-) and carbonate (CO32-) as well as high exchangeable Na+. Excessive concentrations of sodium chloride (NaCl) in soil or irrigation water can induce several morphological, physiological, and biochemical responses in plants leading to stunted growth and yield. This is due to osmotic (i.e., water deficit) and ionic (i.e., Na+ and Cl-) effects on nutrient uptake/translocation and metabolic processes such as nitrogen assimilation, photosynthesis, and protein synthesis. Plant growth promoting microbes (PGPMs) are considered as promising tools to overcome the limitations of salinity on crop growth and productivity. Many PGPMs can enhance tolerance of crops to salt stress by increasing nutrient uptake through better solubilization of nutrients like phosphorus and zinc, and also by production of small peptides, volatiles and metabolites with hormone activities such as indole-3-acetic acid or auxin analogs in the rhizosphere. This chapter discusses the benefits of PGPMs in plant adaptations to salt stress conditions. Book Name: Agriculturally Important Microorganisms
Related Links	https://api.taylorfrancis.com/content/chapters/edit/download?identifierName=doi&identifierValue=10.1201/9781003245841-4&type=chapterpdf
Ending Page	90
Page Count	26
Starting Page	65
DOI	10.1201/9781003245841-4
Language	English
Publisher	Informa UK Limited
Publisher Date	2021-09-30
Access Restriction	Open
Subject Keyword	Book Name: Agriculturally Important Microorganisms Salt Stress Crops Soil Sodium Salinity Plant Growth Promoting Adaptations
Content Type	Text
Resource Type	Chapter

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