Role of beneficial microbial gene pool in mitigating salt/nutrient stress of plants in saline soils through underground phytostimulating signalling molecules
Role of beneficial microbial gene pool in mitigating salt/nutrient stress of plants in saline soils through underground phytostimulating signalling molecules作者机构:Department of MicrobiologyCollege of Basic Science&HumanitiesG.B.Pant University of Agriculture&TechnologyPantnagarUttarakhand 263145India
出 版 物:《Pedosphere》 (土壤圈(英文版))
年 卷 期:2023年第33卷第1期
页 面:153-171页
核心收录:
学科分类:09[农学] 0903[农学-农业资源与环境]
基 金:Barkha Sharma and Neha Bisht
主 题:abiotic stress crop improvement gene expression halotolerant microbial diversity phosphate solubilization plant growth promoting traits soil health
摘 要:Soil salinity diminishes soil health and reduces crop yield,which is becoming a major global *** stress is one of the primary stresses,leading to several other secondary stresses that restrict plant growth and soil *** major secondary stresses induced in plants under saline-alkaline conditions include osmotic stress,nutrient limitation,and ionic stress,all of which negatively impact overall plant *** stressed conditions,certain beneficial soil microflora are known to have evolved phytostimulating mechanisms,such as the synthesis of osmoprotectants,siderophores,1-aminocyclopropane-1-carboxylic acid(ACC)deaminase activity,phosphate solubilization,and hormone production,which enhance plant growth and development while mitigating nutrient *** soil-borne bacterial species such as Bacillus,Pseudomonas,and Klebsiella and fungal strains such as Trichoderma,Aspergillus,Penicillium,Alternaria,and Fusarium also aid in reducing salinity ***-solubilizing microorganisms also assist in nutrient acquisition via both enzymatic and non-enzymatic *** the case of enzymatic processes,they produce different enzymes such as alkaline phosphatases and phytases,whereas non-enzymatic processes produce organic acids such as gluconic,citric,malic,and oxalic *** native halotolerant/halophilic soil microbial gene pool with multifunctional traits and stress-induced gene expression can be developed as suitable bio-inoculants to enhance stress tolerance and optimize plant growth in saline soils.