Snow_mold_Microdochium

Snow mold is a severe plant disease caused by psychrophilic or psychrotolerant fungi and oomycetes. The disease is developed under snow cover at or shortly below the freezing point. Although snow mold disease is of great economic importance, snow mold-causing pathogens, including M. nivale, are poorly investigated. The snow mold-related pathocomplex and its dynamic during the disease progression are poorly characterized in the environment. Our study was aimed at the characterization of the community of snow mold-causing Microdochium species within a given geographical location and particular crop culture (winter rye). For the first time, fungal and bacterial communities were analyzed by NGS technique by the example of snow mold-damaged plants shortly after the snowmelt.

雪霉病是一类由嗜冷（psychrophilic）或耐冷（psychrotolerant）真菌及卵菌（oomycetes）引发的严重植物病害，其发病过程发生于积雪覆盖、温度处于冰点或略低于冰点的环境中。尽管雪霉病具有极高的经济重要性，但包括雪腐微座孢（M. nivale）在内的致病病原菌相关研究仍较为匮乏，且环境中与雪霉病相关的致病复合体及其在病害发展进程中的动态变化特征尚未得到充分解析。本研究旨在明确特定地理区域及特定栽培作物（冬黑麦）范围内，引发雪霉病的微座孢属（Microdochium）物种群落结构特征；并首次以融雪后不久的雪霉病受害植株为研究对象，采用下一代测序（Next-Generation Sequencing，NGS）技术对其中的真菌与细菌群落开展了分析。