油菜素内酯提高植物抗逆性的研究进展

近二十多年来,油菜素内酯类(BRs)在农林业上的应用逐渐增加,并不断有新的研究成果报导。但对BRs提高植物的抗逆性研究报道较少。介绍了油菜素内酯类(BRs)物质对提高植物的抗逆性(抗旱性、抗冷抗寒性、抗热性、抗盐性、抗药性、抗毒性)的作用以及对植物衰老的调节作用,并从含水量、细胞保护酶活性、脯氨酸累积、光合作用、丙二醛和细胞膜透性等抗逆性指标方面对BRs提高植物抵抗环境胁迫的机理研究进展进行了综评。

Research progress of plant stress-resistance promoting related to brassinolides

In the past twenty years, brassinosteroids (BRs) have been increasingly applied in agriculture and horticulture, and some new research achievements have been obtained. Brassinosteroids are able to promote cell division, elongation, swelling, curvature and splitting of internodes, and to improve the growth of plants and the output of crops. In this paper the effects of brassinosteroids on stress-resistance (including drought-resistance, cold-resistance, heat-resistance, salt-resistance, drug-resistance and toxicity-resistance) and consenescence regulation of crops and trees are described from the parameters such as water content, protective enzyme activity, proline cumulation, photosynthesis, MDA and cell membrane penetrability. BRs can be regarded as plant growth promoters with promising properties for practical use in agriculture and forestry.