摘要
土壤盐分过高严重影响植物的生长发育,制约了现代农业和经济的可持续发展,威胁生态安全。根际微生物是植物基因组的有效延伸,通过调控植物体内激素变化、诱导形成抗氧化系统、产生渗透调节物质、分泌胞外多糖、介导离子平衡等方式对其生理特性产生深刻影响,诱导植物产生胁迫应答,缓解盐逆境损伤。而植物通过降低土壤耕层盐度、积累养分、降低根际pH等系列生理过程,也对根际微生物产生一定微生态效应。为更好地从根际微生态角度解答植物耐盐胁迫的生理与分子机制,充分挖掘和利用根际功能微生物,该研究从植物对根际微生物的影响、根际微生物提高植物的耐盐机理2个方面系统阐述了二者的互作关系,并展望了今后开展植物耐盐性研究和利用的方向。
Soil salinity seriously affects the growth and development of plants, which has restricted the sustainable development of modern agriculture and economy and threatened the ecological security.Rhizosphere microorganism is an effective extension of plant genome, and conduct a profound impact on plant physiological characteristics by regulating hormonal changes in plants, inducing the formation of antioxidant system, producing osmotic regulating substances, secreting exopolysaccharides, and mediating ion balance.Then plants were induced to establish a system of resistance to alleviate salt stress damage.Moreover, plants also had certain microecological effects on rhizosphere microorganisms through a series of physiological processes, such as decreasing surface salinity of soil, accumulating nutrients, and reducing the pH of rhizosphere.In order to better understand the salt tolerance mechanism of plants from the perspective of rhizosphere microecology, excavate and utilize rhizosphere functional microorganisms, the interaction was reviewed from two aspects, including the effects of plant on rhizosphere microorganisms and their salt tolerance induced by rhizosphere microorganisms, and future research direction was also prospected.
作者
王继莲
李明源
周茜
张甜
WANG Jilian;LI Mingyuan;ZHOU Qian;ZHANG Tian(Department of Biologic and Geographic Sciences,Kashgar University/Key Laboratory of Ecology and Biological Resources in Yarkand Oasis of Education of Xinjiang Uygur Autonomous Region,Kashgar,Xinjiang 844006)
出处
《北方园艺》
CAS
北大核心
2021年第17期143-149,共7页
Northern Horticulture
基金
新疆维吾尔自治区高校科研计划资助项目(XJEDU2018Y038)。
关键词
根际微生物
微生态
盐胁迫
耐盐机理
互作
rhizosphere microorganism
microecological
salt stress
salt tolerance mechanism
interaction
