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Genome-Wide Analysis and Expression Profiling of Lectin Receptor-like Kinase Genes in Watermelon (Citrullus lanatus)

文献类型： 外文期刊

作者： Lv, Duo 1 ; Wang, Gang 2 ; You, Jiaqi 1 ; Zhu, Lihua 1 ; Yang, Hongjuan 1 ; Cao, Biting 1 ; Gu, Weihong 1 ; Li, Chaohan 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Hort Res Inst, Shanghai Key Lab Protected Hort Technol, Shanghai 201106, Peoples R China

2.Shanghai Jiao Tong Univ, Sch Agr & Biol, Shanghai 200240, Peoples R China

关键词： Cucurbitaceae; LecRLK; watermelon; RNA-seq; fungal response

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.6 ）

ISSN： 1661-6596

年卷期： 2024 年 25 卷 15 期

页码：

收录情况： SCI

摘要： Watermelon is one of the most important edible plants worldwide. Owing to its special cultivation conditions, watermelon is exposed to many biological and abiotic stresses during its development. Lectin receptor-like kinases (LecRLKs) are plant-specific membrane proteins that play important roles in sensing and responding to environmental stimuli. Although the LecRLK gene family has been identified in a variety of plants, a comprehensive analysis has not yet been undertaken in watermelon. In this study, 61 putative LecRLK genes were identified in watermelon, consisting of 36 G-type, 24 L-type, and 1 C-type LecRLK genes. They were distributed in clusters on chromosomes, and members from the same subfamily were mostly clustered together. The analysis of the phylogenetic tree and conserved motif indicated that there were obvious differences among three ClaLecRLK subfamilies, and there was also rich diversity in the C-terminal within subfamilies. A collinear analysis revealed that the evolution of the ClaLecRLK gene family in different Cucurbitaceae crops was asynchronous. Furthermore, the analysis of the ClaLecRLK protein structure showed that not all proteins contained signal peptides and a single transmembrane domain. A subcellular localization assay confirmed that the number and position of transmembrane domains did not affect ClaLecRLK protein localization in cells. Transcriptome data revealed distinct expression patterns of LecRLK genes of watermelon in various tissues, and their responses to different fungi infection were also significantly different. Finally, the potential binding sites of the ClaLecRLK genes targeted by miRNA were predicted. This study enhances the understanding of the characteristics and functions of the LecRLK gene family in watermelon and opens up the possibility of exploring the roles that LecRLK genes may play in the life cycle of Cucurbitaceae plants.

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