文献类型： 外文期刊

作者： Jian, Yunqing ¹ ; Li, Ying ¹ ; Tang, Guiting ¹ ; Zheng, Xiaojuan ¹ ; Khaskheli, Muhammad Ibrahim ¹ ; Gong, Guoshu ¹ ;

作者机构： 1.Sichuan Agr Univ, Coll Agron, Chengdu 611130, Peoples R China

2.Sichuan Agr Univ, Key Lab Major Crop Dis, Chengdu 611130, Peoples R China

3.Southeast Chongqing Acad Agr Sci, Fuling 408000, Peoples R China

4.Sindh Agr Univ, Dept Plant Protect, Tandojam 70060, Pakistan

关键词： Colletotrichum species; morphological characterization; pathogenicity; phylogenetic analysis; strawberry anthracnos

期刊名称：PLANT DISEASE （ 影响因子：4.4； 五年影响因子：4.8 ）

ISSN： 0191-2917

年卷期： 2021 年 105 卷 10 期

页码：

收录情况： SCI

摘要： Strawberry anthracnose, caused by Colletotrichum species, is a major fungal disease threatening the strawberry industry in Sichuan Province of southwestern China. However, research on identification of Colletotrichum species associated with strawberry anthracnose in Sichuan remains scarce. In this study, 73 representative Colletotrichum strains were isolated from diseased leaves, stolons, petioles, and crowns of 11 major strawberry-planting localities in Sichuan Province. Based on morphological characteristics and multiloci phylogenetic analysis, the Colletotrichum strains were identified as three distinct species: Colletotrichum fructicola (53 strains, 72.60%), Colletotrichum siamense (17 strains, 23.29%), and Colletotrichum gloeosporioides sensu stricto (3 strains, 4.11%). Among them, C. fructicola was the most ubiquitous and dominant species, whereas C. gloeosporioides sensu stricto was restricted to Chongzhou. Importantly, our pathogenicity tests showed that C. fructicola and C. siamense can infect both leaves and stolons, whereas C. gloeosporioides sensu stricto was only pathogenic to leaves. Interestingly, although the sexual stage of C. siamense was not observed in this study, it still exhibited the strongest virulence to strawberry compared with C. gloeosporioides sensu stricto and C. fructicola. This is the first study to characterize Colletotrichum species causing strawberry anthracnose and evaluate their pathogenicity in Sichuan Province of southwestern China, which will provide a better strategy for accurate diagnosis and management of anthracnose disease in strawberry.