环境污染与植物病害

本文讨论了环境污染物与植物病害的某些已知关系。污染物可以直接或通过作用于寄主植物影响病原接种体及其侵入后的扩展,影响植物体表微生物群落,改变各类有害生物的资源竞争格局,从而改变双方寄生关系的建立和发展模式,对发病率和严重度产生影响。而且,病害对植物生理状况的改变还将影响植株对污染物伤害的敏感性。污染物的这些作用都是依赖于特定植物病原组合的。

Effects of Pollutants on Plant Diseases

In this review, some interactions between pollutants and plant diseases were discussed. It was known, up to now, that pollutants could make a great impact on pathogens and the disease development directly or/and indirectly via the host plant, and interfere with the microbial association which, consequently, altered the competition patterns among phytophaga on the surface of host, and that, on the other hand, host's sensetiveness to pollutants might be also affected by the physiological changes due to the infection of pathogen. All such influences of pollutants would be dependent upon specific plant-pathogen combination, and concerned the parasitic process as well as the diseaase intensity and severity.