[小麦胚芽凝集素对盐胁迫下小麦幼苗根细胞生长的保护作用机制]

[Mechanisms of protective action of wheat germ agglutinin on cell growth in wheat seedling roots under salinity].

作者信息

Kil'dibekova A R, Bezrukova M V, Aval'baev A M, Fatkhutdinova R A, Shakirova F M

出版信息

Tsitologiia. 2004;46(4):312-6.

Abstract

Effects of 20 nM wheat germ agglutinin (WGA) on relative growth rate, mitotic index (MI) and the cell area in the root extension zone were investigated in seedling of Triticum aestivum L. under the influence of 2% NaCl. It was elucidated that pretreatment of wheat seedling with WGA prevented a salinity induced inhibition of root cell growth, and accelerated the restoration of cell growth after stress removal. The protective WGA effect on root cell growth may be due, presumably, to reorganization of phytohormone balance caused by WGA treatment, which could lead to accumulation of LAA and decrease in the ABA level.

摘要

研究了20 nM小麦胚凝集素（WGA）对2% NaCl影响下的普通小麦幼苗根伸长区相对生长速率、有丝分裂指数（MI）和细胞面积的影响。结果表明，用WGA预处理小麦幼苗可防止盐度诱导的根细胞生长抑制，并加速胁迫解除后细胞生长的恢复。WGA对根细胞生长的保护作用可能是由于WGA处理引起的植物激素平衡的重新组织，这可能导致生长素（LAA）的积累和脱落酸（ABA）水平的降低。