Effects of Salt Stress on Absorption of Nitrate and Root Growth and Development in Eutrema salsuginea
Jiang Nana
Cui Feng
Liu Yiyang
Han Yan
Zhang Quan
Li Jun
Li Guowei
Abstract：Nitrogen is a major nutrient element necessary to plant growth and development,and nitrate is the main form of nitrogen absorbed by plants.Salt stress is one type of abiotic stress,which defects plant growth and development.In order to study the effects of salt stress on nitrate absorption and plant growth and development,we employed salt-tolerant model plant Eutrema salsuginea as materials.The changes of nitrate concentrations in Eutrema salsuginea under salt stress were measured,and its relationship with root development was analyzed.In addition,the expression levels of nitrate transporter (NRT) genes were analyzed using RNA-seq technology under salt stress conditions.The results showed that the nitrate contents in leaves and roots were both significantly decreased after salt stress treatment,and the root dry weight had a positive correlation with nitrate content.It implied that salt stress inhibited plant nitrate absorption,and further affected the growth of root system.Totally,ten NRTs were detected by RNA-seq analysis,and the expression of most of NRTs was regulated by salt stress.It suggested that these genes might be related with nitrate absorption and transport in Eutrema salsuginea under high salt environment.In conclusion,we presume that salt stress inhibits the nitrate absorption in Eutrema salsuginea,which might be one of the factors limiting the growth and development of plants under salt stress.
Keywords：Eutrema salsugineaSalt stressNitrate absorptionNitrate transporter
Publication Date：2017-09-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 37-41 )