Disguising the Leaf Surface: The Use of Leaf Coatings for Plant Disease Control
Disguising the Leaf Surface: The Use of Leaf Coatings for Plant Disease Control
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伪装叶子表面：利用叶子涂层控制植物病害
DOI：
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发表时间：
2006
影响因子：
1.8
通讯作者：
D. Walters
中科院分区：
文献类型：
--
作者：
D. Walters
真菌病原体对杀真菌剂产生抗性并克服宿主遗传抗性的能力，加上公众对环境的日益关注，意味着迫切需要新的疾病控制方法。叶片表面提供了真菌必须克服的第一道屏障，以便进入叶片，但它也提供了许多真菌病原体感染结构发展所必需的化学和物理线索。成膜聚合物可以覆盖在叶子表面，不仅作为感染的额外屏障，而且还掩盖了芽发育所需的线索。高岭土颗粒膜可以将叶片包裹在疏水颗粒膜屏障中，该屏障防止孢子或水直接接触叶片表面，因此可以抑制感染。可以抑制真菌孢子粘附到叶表面，这对于将孢子保持在叶表面上以及对于真菌在叶表面上的适当发育是重要的，从而减少感染和病变发展。聚合物和颗粒膜已被证明可以在田间提供疾病控制，而抑制孢子粘附在叶面上的药剂的研究仍处于起步阶段。迫切需要研究在田间条件下使用这些新方法的实用性，以及如何将其纳入当前的作物保护方案。
The ability of fungal pathogens to develop resistance to fungicides and to overcome genetic resistance in their hosts, coupled with growing public concern for the environment, means that there is an urgent need for novel methods of disease control. The leaf surface provides the first barrier that fungi must overcome in order to gain access to the leaf, but it also provides chemical and physical cues that are necessary for the development of infection structures for many fungal pathogens. Film-forming polymers can coat the leaf surface, acting not just as an extra barrier to infection, but also disguising the cues necessary for germling development. Kaolin particle films can envelop the leaf in a hydrophobic particle film barrier that prevents spores or water from directly contacting the leaf surface and as a result, can suppress infection. Adhesion of fungal spores to the leaf surface, which is important to keep spores on the leaf surface and for appropriate development of the fungus on the leaf surface, can be inhibited, leading to reduced infection and lesion development. Polymer and particle films have been shown to provide disease control in the field, while research on agents that inhibit spore adhesion on leaf surfaces is still in its infancy. There is an urgent need for research on the practicality of using these novel methods under field conditions and on ways of integrating them into current crop protection programmes.