棉花抗黄萎病机制研究进展

Research on Resistance Mechanism of Cotton to Verticillium Wilt

棉花黄萎病是一种土传真菌维管束病害,严重影响棉花产量和纤维品质。常规的防治手段可以局部控制但不能有效防治,采用传统的抗病育种策略培育抗病品种成效缓慢,因此对其防治一直是棉花生产上的难题。目前越来越多的研究集中在棉花对黄萎病的抗病机制方面。本文结合其他植物抗病研究进展从抗病基因介导的信号路径、乙烯在棉花与黄萎病菌互作中的作用、棉花对黄萎病菌的生理生化抗性以及棉花组织结构与黄萎病菌的抗性4个方面总结棉花抗黄萎病的机制,以期对棉花抗病分子育种提供借鉴。

VerticiUium wilt in cotton caused by Verticillium dahliae is a soil-borne vascular disease, which results in serious loss in yield and fiber quality yearly. However, traditional strategy doesn＇t work very well to control the disease but the local control, and it isn＇t an efficient way to develop a new cotton variety with resistances to Verticilliurn wilt via the conventional method, and there are few successful reports with conventional breeding method for disease resistance improvement due to shortage of high resis- tance germplasm, so the control of this disease has been an obstacle in cotton production. Recently, more researches focus on the resistance mechanism of cotton to this disease. Coupled with results in other crops lately, here, we summarized the processes in cotton for controlling Verticillium wilt based on signal transduction of R gene, the putative role of ethylene in the interaction be- tween cotton and V. dahliae, physiological and biochemical resistance as well as host structural resistance, and from which some suggestions may be inferred for molecular breeding in disease resistance.