Transcriptomics and metabolomics reveal the induction of flavonoid biosynthesis pathway in the interaction of Stylosanthes-Colletotrichum gloeosporioides
文献类型： 外文期刊
作者： Jiang, Lingyan 1 ; Wu, Pengpeng 1 ; Yang, Liyun 1 ; Liu, Chun 1 ; Guo, Pengfei 1 ; Wang, Hui 1 ; Wang, Shaocai 1 ; Xu, Fu 1 ;
作者机构： 1.Hainan Univ, Coll Trop Crops, Hainan Key Lab Sustainable Utilizat Trop Bioresou, Haikou 570228, Hainan, Peoples R China
2.Chinese Acad Trop Agr Sci, Inst Trop Crop Genet Resources, Haikou 570228, Hainan, Peoples R China
关键词： Colletotrichum; Stylosanthes; Transcriptomics; Metabolomics; Defense responses; Flavonoid
期刊名称：GENOMICS （ 影响因子：5.736； 五年影响因子：4.939 ）
ISSN： 0888-7543
年卷期： 2021 年 113 卷 4 期
页码：
收录情况： SCI
摘要： Colletotrichum, a hemibiotrophic fungal pathogen with a broad host range, causes a yield-limiting disease called anthracnose. Stylo (Stylosanthes) is a dominant pasture legume in tropics and subtropics, and anthracnose is one of its most destructive disease. Resistance mechanisms against anthracnose in stylo are poorly understood, thus hindering the development of resistant varieties. We performed time-resolved leaf transcriptomics, metabolomics and in vitro inhibition assay to investigate the defense responses against Colletotrichum gloeosporioides in stylo. Transcriptomics demonstrated that flavonoid biosynthetic genes were significantly induced during the infection. Consistently, metabolomics also showed the increased accumulation of flavonoid compounds. In vitro assays showed that phloretin and naringenin inhibited the mycelial growth, and apigenin, daidzein, quercetin and kaempferol suppressed conidial germination of Colletotrichum strains. Together, our results suggest that stylo plants cope with C. gloeosporioides by up-regulation of genes and compounds in flavonoid biosynthesis pathway, providing potential targets for resistance breeding.
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