A new leave disease of tomato(Lycopersicon esculentum Miller) was observed in polyethylene film-covered greenhouse in Beijing,China.This disease spreaded rapidly in the greenhouse and caused serious loss of the production of tomatoes.In the study,a fungal strain isolated from the lesion was confirmed to be pathogen for this new disease,and identified as Myrothecium roridum Tode ex Fr.based on the morphology,cultural characters on PDA plate and sequence analysis of ribosomal DNA-ITS.This is the first report of myrothecium leaf spot on tomato occurring in commercial greenhouse in China.
随着我国蔬菜设施栽培年份与面积的增加，以及栽培环境多样性的加大，在田间诊病的过程中，我们发现我国设施蔬菜栽培中叶斑病种类增多，致害病原菌呈现出多样化的特征。由漆斑菌属（Myrothecium Tode ex Link）的病原真菌引起的多种蔬菜叶部病害，应当引起相关人员的重视。露湿漆斑菌（M．roridum Tode ex Fr．）是一种温带和热带普遍存在的土壤寄生菌，其在温度较高、湿度较大的情况下容易传播，并且可侵染多种经济作物，寄主范围极广，是一种危害极大的病原菌，其首次被发现在美国德克萨斯州的番茄果实上，与以往发现的疣孢漆斑菌（M．verrucaria）形态明显不同。
