大丽花黄萎病
黄萎病
生物
枯萎病
黄萎病
菌丝体
微生物学
病菌
植物
萎蔫
作者
Dandan Zhang,Xiaofeng Dai,Steven J. Klosterman,Krishna V. Subbarao,Jie‐Yin Chen
摘要
ABSTRACT Verticillium dahliae is a notorious soil‐borne pathogen that enters hosts through the roots and proliferates in the plant water‐conducting elements to cause Verticillium wilt. Historically, Verticillium wilt symptoms have been explained by vascular occlusion, due to the accumulation of mycelia and plant biomacromolecule aggregation, and also by phytotoxicity caused by pathogen‐secreted toxins. Beyond the direct cytotoxicity of some members of the secretome, this review systematically discusses the roles of the V. dahliae secretome in vascular occlusion, including the deposition of polysaccharides as an outcome of plant cell wall destruction, the accumulation of fungal mycelia, and modulation of plant defence responses. By modulating plant defences and hormone levels, the secretome manipulates the vascular environment to induce Verticillium wilt. Thus, the secretome of V. dahliae colludes with plant defence responses to modulate Verticillium wilt symptoms, and thereby bridges the historical concepts of both toxin production by the pathogen and vascular occlusion as the cause of wilting symptoms.
科研通智能强力驱动
Strongly Powered by AbleSci AI