细胞分裂素对植物衰老的延缓作用

The Role of Cytokinins in Retarding of Senescence in Plants

摘要:

细胞分裂素是一类重要的植物激素，它可在一定程度上延缓植物的衰老。主要从3个方面综述了细胞分裂素与植物衰老之间的关系，即：（1）植物衰老过程中内源细胞分裂素含量变化：（2）外源细胞分裂素的影响；（3）转入与细胞分裂素的合成、降解相关的基因对植物衰老产生的影响。此外，还从细胞分裂素与糖、与脂质氧化反应以及与其它植物激素的关系方面探讨了细胞分裂素在延缓植物衰老中的作用机理。

Abstract:

Cytokinins are important plant hormones and can delay plant senescence, In this review three approaches in study of the effects of cytokinins on plant senecence are presented： the analysis of endogenous cytokinins during senescence； the application of exogenous cytokinins； and the research on transgenic plants with cytokinin biosynthesis or biodegradation genes. The mechanisms of cytokinins in retarding of senescence was discussed in relation to saccharides, lipid oxidation, as well as to other hormones.