甜土植物根部的钠离子应对策略研究进展

• 作 者: 郭美丽 臧剑甬
• 机 构: 烟台职业学院食品与生化工程系,
• 出 处: 植物生理学报
• 发表日期: 2011年11期
• 关键词: Na+ 共质体 重要界面 甜土植物 盐渍化 盐渍环境 转运机制 拟南芥 植物根部 皮层细胞

土壤盐渍化严重影响了甜土植物(特别是农作物)的生长速率和产量。植物根部是与土壤中Na+接触的重要界面,也是吸收Na+的主要器官,正日益成为甜土植物耐盐研究靶标。本文概述近10年来对Na+进入甜土植物根部的2种途径(共质体和质外体)以及根部维持离子稳态的3种应对方式(Na+的细胞外排、液泡区隔化和地上部分转运)新的认识和观点。通过阐述Na+在甜土植物根部的转运机制,以期为提高农作物抗盐性以及在盐渍环境中的产量提供理论基础。

Soil salinization severely affects the growth rate and yield of sweet soil plants, especially crops. The root of plant is an important interface with Na + in soil and the main organ that absorbs Na +, which is increasingly becoming the salt tolerance research target of sweet soil plants. In this paper, we summarize the two pathways (plastid and apoplast) that Na + enters into the roots of sweet soil plants in the recent 10 years and the three coping modes of root homeostasis (Na + extracellular efflux, vacuolar compartmentalization and aerial parts Transport) new understanding and perspective. The mechanism of Na + transport in the roots of sweet soil plants was expounded in order to provide a theoretical basis for improving salt tolerance of crops and yield in saline environment.