Transcriptome Profiles of Sporisorium reilianum during the Early Infection of Resistant and Susceptible Maize Isogenic Lines
文献类型： 外文期刊
作者： Zhang, Boqi 1 ; Zhang, Nan 1 ; Zhang, Qianqian 1 ; Xu, Qianya 1 ; Zhong, Tao 1 ; Zhang, Kaiyue 1 ; Xu, Mingliang 1 ;
作者机构： 1.China Agr Univ, Coll Agron & Biotechnol, State Key Lab Plant Physiol & Biochem, Ctr Crop Funct Genom & Mol Breeding,Natl Maize Im, 2 West Yuanmingyuan Rd, Beijing 100193, Peoples R China
2.Guangdong Acad Agr Sci, Crops Res Inst, Jinying 2 West Rd, Guangzhou 510640, Peoples R China
关键词： Sporisorium reilianum; ZmWAK; transcriptome
期刊名称：JOURNAL OF FUNGI （ 影响因子：5.816； 五年影响因子：6.499 ）
ISSN：
年卷期： 2021 年 7 卷 2 期
页码：
收录情况： SCI
摘要： The biotrophic fungus Sporisorium reilianum causes destructive head smut disease in maize (Zea mays L.). To explore the pathogenicity arsenal of this fungus, we tracked its transcriptome changes during infection of the maize seedling mesocotyls of two near-isogenic lines, HZ4 and HZ4R, differing solely in the disease resistance gene ZmWAK. Parasitic growth of S. reilianum resulted in thousands of differentially expressed genes (DEGs) compared with growth in axenic culture. The protein synthesis and energy metabolism of S. reilianum were predominantly enriched with down-regulated DEGs, consistent with the arrested hyphal growth observed following colonization. Nutrition-related metabolic processes were enriched with both up- and down-regulated DEGs, which, together with activated transmembrane transport, reflected a potential transition in nutrition uptake of S. reilianum once it invaded maize. Notably, genes encoding secreted proteins of S. reilianum were mostly up-regulated during biotrophy. ZmWAK-mediated resistance to head smut disease reduced the number of DEGs of S. reilianum, particularly those related to the secretome. These observations deepen our understanding of the mechanisms underlying S. reilianum pathogenicity and ZmWAK-induced innate immunity.
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