AMF和PGPR单独或“跨界”互作促进植物耐盐性的研究进展  

Advances in the separate functions or cross-kingdom interactions of AMF and PGPR in enhancing plant salt tolerance

作　　者：秦敬泽 秦泽峰 倪刚 谢沐希 周大朴 王光州[1] 张俊伶[1] QIN Jing-ze;QIN Ze-feng;NI Gang;XIE Mu-xi;ZHOU Da-pu;WANG Guang-zhou;ZHANG Jun-ling(College of Resources and Environmental Sciences/National Institute for Green Development/State Key Laboratory of Nutrient Use and Management,China Agricultural University,Beijing 100193,China)

机构地区：[1]中国农业大学资源与环境学院/国家农业绿色发展研究院/养分资源高效利用全国重点实验室,北京100193

出　　处：《植物营养与肥料学报》2024年第7期1354-1366,共13页Journal of Plant Nutrition and Fertilizers

基　　金：国家自然科学基金联合基金项目(U23A2054)。

摘　　要：盐碱地改良和利用对拓展我国后备耕地资源及保障国家粮食安全具有重要意义。根际微生物作为植物的“第二基因组”,在提高作物抗盐碱胁迫能力,促进作物“以种适地”方面具有巨大潜力。其中,丛枝菌根真菌(arbuscular mycorrhizal fungi,AMF)和植物根际促生细菌(plant growth promoting rhizobacteria,PGPR)均为重要的根际有益微生物,能显著提高植物耐盐性。本文分别总结了AMF和PGPR提高植物抗盐能力的相关研究进展,并进一步梳理了两者协同提高植物耐盐的机制,包括提高养分效率、调节激素内稳态、提高植物诱导抗性以及调控转录因子表达等,最后提出了基于两者跨界组合的改良方向。旨在充分理解盐胁迫条件下微生物耐盐促生的作用机制,为充分挖掘微生物资源潜力和发展生物技术治理盐碱地提供重要的科学支撑。The improvement and utilization of saline-alkali land are crucial for expanding reserved arable land resources and ensuring food security in China.As the“second genome”of plants,rhizosphere microbiomes have great potential in enhancing crop tolerance to saline-alkali stress and promoting crop adaptation to specific soil environments.Among these microorganisms,arbuscular mycorrhizal fungi(AMF)and plant growth-promoting rhizobacteria(PGPR)are beneficial microbes that can substantially increase plant salt tolerance.In this paper,we summarize the progress on the separate roles of AMF or PGPR in enhancing plant resistance to saline conditions.Then the synergistic mechanisms by which the two microbial groups enhance plant salt tolerance,including the improvement of nutrient efficiency,regulation of hormonal homeostasis,promotion of induced systemic resistance,and modulation of transcription factor expression are elucidated.Finally,we propose future amelioration directions based on the cross-kingdom interactions between AMF and PGPR.The aim is to comprehensively understand the mechanisms underlying salinity tolerance and plant growth promoting effects of microbiomes under saline conditions.It also provides essential scientific support for exploiting microbial resources and developing biotechnological strategies for amelioration of saline-alkali lands.

关 键 词：盐化土壤 丛枝菌根真菌 植物根际促生细菌 植物耐盐性 

分 类 号：S156.4[农业科学—土壤学]