胁迫与植物细胞壁关系研究进展

Advances on Research of the Relationship between Stresses and Plant Cell Wall

关键词:  胁迫  水分亏缺  重金属  营养缺乏  植物细胞壁

Key words:  stress  water deficit  heavy metal  nutritional disorder  plant cell wall

摘要:

概述水分亏缺、重金属和营养缺乏等对植物所产生的胁迫表现及其与细胞壁伸展生长、细胞壁中某些主要成分如过氧化物酶和松弛酶等变化关系的研究成果。多种胁迫对植物细胞壁的影响主要表现在对细胞壁结构完整性的影响。细胞壁酶影响细胞壁多聚体的网络形成和解聚。细胞壁结构的生化修饰与基因表达有关。认为研究植物在胁迫下的生长受抑机制和耐性机制有助于常规育种。应用遗传工程、细胞工程等创造出不同细胞壁结构的遗传突变体将是今后努力的方向。

Abstract:

The expression of plants under the environmental stresses such as water deficit, heavy metals, nutritional disorder was released. The researches on the relationship of the expansion of plant cell wall and some wall-bind enzymes such as peroxidase and xyloglacan endotransglycosylase are described. The influence of the multiple stresses is mostly on the integrity of the cell wall. The structuring behavior of the cell wall by polymers are impacted by the wall-bind enzymes. The biochemical modification of the cell wall is related to the expression of gene. Research activity on the mechanisms of cell growth inhibition and tolerance under stress is helpful to the breeding of crops. Creation of mutants with different structures of the cell wall through genetic engineering and cell engineering is a way to go.