Germicide Fenaminosulf Promots Gall Formation of Zizania latifolia without directly affecting the growth of endophytic fungus Ustilago esculenta

文献类型： 外文期刊

第一作者： Li, Fang

作者： Li, Fang;Zhang, Juefeng;Zhong, Haiying;Chen, Jianming

作者机构：

关键词： Zizania latifolia; Fungal endophyte; Gall formation; Fenaminosulf; RNA sequencing

期刊名称：BMC PLANT BIOLOGY （ 影响因子：5.26； 五年影响因子：5.761 ）

ISSN： 1471-2229

年卷期： 2022 年 22 卷 1 期

页码：

收录情况： SCI

摘要： Zizania latifolia is a popular aquatic vegetable in China because of its enlarged edible stems resulting from persistent infection by a fungal endophyte, Ustilago esculenta. Fenaminosulf (FM) is a germicide that can be used to improve agricultural crop yields. In Z. latifolia fields, appropriate spraying of FM not just controls diseases, but also promotes an earlier harvest of Z. latifolia. In this study, we show that the timing of gall formation was advanced and the plant's yield was increased significantly under a high concentration treatment of FM. Yet FM had a strong inhibitory effect on the growth of U. esculenta in vitro, while the transcript levels of mating-type alleles, cell metabolism-related genes and chitin synthase genes were all substantially downregulated. Through a transcriptome analysis, we investigated changes in gene expression of the host Z. latifolia and fungal endophyte U. esculenta in response to FM. FM directly affected the growth of Z. latifolia by altering the expression level of genes involved in plant-pathogen interactions, plant hormone signal transduction and some metabolism pathways. By contrast, FM had little effect on U. esculenta growing inside of Z. latifolia. Collectively, our results provide a more in-depth understanding of the molecular processes that promote gall formation in Z. latifolia, while also identifying potential targets for genetic manipulation to improve the yield and quality of Z. latifolia, in a safer and more effective way.

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