Cytospora mali strain:EGI1 Genome sequencing and assembly. Cytospora mali strain:EGI1

Cytospora species are capable of causing destructive cankers of stems belonging to a wide range of woody plant species. In severe cases, cankers may lead to dieback of twigs and branches. Little is known about the Cytospora species causing canker disease of wild apple (Malus sieversii) trees in the Wild Fruit Forest Reserve in Tianshan Forest, Xinjiang Uygur Autonomous Region, China. In this study, one isolate (named EGI1 ) belonging to Cytospora mali were isolated from cankerous lesions of wild apple twigs. The isolate EGI1 was the most virulent isolate among all the isolates. This paper presents the first report of pathogenic Cytospora spp. of the M. sieversii Tianshan Wild Fruit Forest Reserve of Yili, Xinjiang in China. It will aid in the understanding of how apple tree cankers are induced and provide disease management guidelines for M. sieversii forest conservation.

壳囊孢属（Cytospora）真菌可引发多种木本植物茎部的破坏性溃疡病。病情严重时，溃疡可导致枝条枯死乃至整枝萎蔫。目前针对中国新疆维吾尔自治区天山森林野生果林保护区内引发新疆野苹果（Malus sieversii）溃疡病的壳囊孢属物种，相关研究尚少。本研究从野苹果枝条的溃疡病灶中分离得到一株隶属于苹果壳囊孢（Cytospora mali）的菌株，命名为EGI1。该菌株EGI1为所有供试菌株中致病力最强的菌株。本研究首次报道了中国新疆伊犁天山野生果林保护区内侵染新疆野苹果的致病型壳囊孢属物种，可为苹果树溃疡病的致病机制解析提供参考，并为新疆野苹果林的保护提供病害防控指导方案。