植物病原菌包括真菌、细菌、病毒等,广泛存在于自然界中,可以引起各种植物病害。病原菌对植物的负反馈作用,即植物个体附近的土壤病原菌,可能反过来侵害其自身或同种个体,致死或影响生长植物的现象。植物病原菌对群落中优势种的更新有强烈的抑制作用,从而促进物种的共存。植物病原菌的负反馈作用在植物种群动态和群落演替中起着重要的调控作用。 Plant pathogens, including fungi, bacteria, viruses, are widely found in nature and can cause a variety of plant diseases. The negative feedback of pathogens on plants, that is, soil pathogens in the vicinity of individual plants, may in turn violate their or their own kind, causing death or affecting the growth of plants. Phytopathogenic bacteria strongly inhibit the regeneration of dominant species in the community and promote the coexistence of species. The negative feedback effect of plant pathogens plays an important regulatory role in plant population dynamics and community succession.