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Genome-wide characterization of the wall-associated kinase-like (WAKL) family in sesame (Sesamum indicum) identifies a SiWAKL6 gene involved in resistance to Macrophomina Phaseolina

文献类型： 外文期刊

作者： Yan, Wenqing 1 ; Hu, Peilin 1 ; Ni, Yunxia 1 ; Zhao, Hui 1 ; Liu, Xintao 1 ; Cao, Hengchun 2 ; Jia, Min 1 ; Tian, Baoming 1 ; Miao, Hongmei 1 ; Liu, Hongyan 1 ;

作者机构： 1.Zhengzhou Univ, Henan Acad Agr Sci, Inst Plant Protect, Postgrad T&R Base, Zhengzhou 450002, Henan, Peoples R China

2.Key Lab Specif Oilseed Crops Genom Henan Prov, Zhengzhou 450002, Henan, Peoples R China

3.Zhengzhou Univ, Sch Agr Sci, Zhengzhou 450002, Henan, Peoples R China

4.Shennong Lab, Zhengzhou 450002, Henan, Peoples R China

关键词： Sesame; WAKL; Gene family; Macrophomina Phaseolina; Resistance

期刊名称：BMC PLANT BIOLOGY （ 影响因子：5.3； 五年影响因子：5.9 ）

ISSN： 1471-2229

年卷期： 2023 年 23 卷 1 期

页码：

收录情况： SCI

摘要： Background Sesame charcoal rot caused by Macrophomina phaseolina is one of the most serious fungal diseases in sesame production, and threatens the yield and quality of sesame. WAKL genes are important in the plant response to biotic stresses by sensing and transmitting external signals to the intracellular receptor. However, there is still a lack about the WAKL gene family and its function in sesame resistance to M. phaseolina. The aim of this study was to interpret the roles of WAKL genes in sesame resistance to M. phaseolina.Results In this study, a comprehensive study of the WAKL gene family was conducted and 31 WAKL genes were identified in the sesame genome. Tandem duplication events were the main factor in expansion of the SiWAKL gene family. Phylogenetic analysis showed that the sesame SiWAKL gene family was divided into 4 groups. SiWAKL genes exhibited different expression patterns in diverse tissues. Under M. phaseolina stress, most SiWAKL genes were significantly induced. Notably, SiWAKL6 was strongly induced in the resistant variety "Zhengzhi 13". Functional analysis showed that SiWAKL6 was induced by salicylic acid but not methyl jasmonate in sesame. Overexpression of SiWAKL6 in transgenic Arabidopsis thaliana plants enhanced their resistance to M. phaseolina by inducing the expression of genes involved in the salicylic acid signaling pathway and reconstructing reactive oxygen species homeostasis.Conclusions Taken together, the results provide a better understanding of functions about SiWAKL gene family and suggest that manipulation of these SiWAKL genes can improve plant resistance to M. phaseolina. The findings contributed to further understanding of functions of SiWAKL genes in plant immunity.

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