Genome-Wide Identification and Characterization of the CC-NBS-LRR Gene Family in Cucumber (Cucumis sativus L.)

被引:18
作者
Zhang, Wanlu [1 ,2 ,3 ]
Yuan, Qi [1 ,2 ,3 ]
Wu, Yiduo [1 ]
Zhang, Jing [1 ]
Nie, Jingtao [1 ,2 ,3 ]
机构
[1] Zhejiang AF Univ, Coll Hort Sci, Hangzhou 311300, Peoples R China
[2] Minist Agr & Rural Affairs, Key Lab Qual & Safety Control Subtrop Fruit & Veg, Hangzhou 311300, Peoples R China
[3] Zhejiang AF Univ, Coll Hort Sci, Collaborat Innovat Ctr Efficient & Green Prod Agr, Hangzhou 311300, Peoples R China
基金
中国国家自然科学基金;
关键词
cucumber; CC-NBS-LRR; bioinformatic; gene expression; miRNA; DISEASE RESISTANCE GENES; CONFERS RESISTANCE; MILDEW RESISTANCE; MAJOR CLUSTER; DOWNY MILDEW; PROTEIN; BINDING; IMMUNITY; MICRORNAS; ENCODES;
D O I
10.3390/ijms23095048
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The NBS-LRR (NLR) gene family plays a pivotal role in regulating disease defense response in plants. Cucumber is one of the most important vegetable crops in the world, and various plant diseases, including powdery mildew (PM), cause severe losses in both cucumber productivity and quality annually. To characterize and understand the role of the CC-NBS-LRR(CNL) family of genes in disease defense response in cucumber plants, we performed bioinformatical analysis to characterize these genes systematically. We identified 33 members of the CNL gene family in cucumber plants, and they are distributed on each chromosome with chromosome 4 harboring the largest cluster of five different genes. The corresponding CNL family member varies in the number of amino acids and exons, molecular weight, theoretical isoelectric point (pI) and subcellular localization. Cis-acting element analysis of the CNL genes reveals the presence of multiple phytohormone, abiotic and biotic responsive elements in their promoters, suggesting that these genes might be responsive to plant hormones and stress. Phylogenetic and synteny analysis indicated that the CNL proteins are conserved evolutionarily in different plant species, and they can be divided into four subfamilies based on their conserved domains. MEME analysis and multiple sequence alignment showed that conserved motifs exist in the sequence of CNLs. Further DNA sequence analysis suggests that CsCNL genes might be subject to the regulation of different miRNAs upon PM infection. By mining available RNA-seq data followed by real-time quantitative PCR (qRT-PCR) analysis, we characterized expression patterns of the CNL genes, and found that those genes exhibit a temporospatial expression pattern, and their expression is also responsive to PM infection, ethylene, salicylic acid, and methyl jasmonate treatment in cucumber plants. Finally, the CNL genes targeted by miRNAs were predicted in cucumber plants. Our results in this study provided some basic information for further study of the functions of the CNL gene family in cucumber plants.
引用
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页数:21
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