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Systematic analysis of Heat Shock Protein 70 (HSP70) gene family in radish and potential roles in stress tolerance

文献类型： 外文期刊

作者： Pan, Xiaoxue 1 ; Zheng, Yang 2 ; Lei, Kairong 1 ; Tao, Weilin 2 ; Zhou, Na 2 ;

作者机构： 1.Chongqing Acad Agr Sci, Chongqing Key Lab Advers Agr, Biotechnol Res Inst, Chongqing 401329, Peoples R China

2.Chongqing Acad Agr Sci, Vegetable & Flower Res Inst, Chongqing 401329, Peoples R China

3.Minist Agr & Rural Affairs, Coconstruct Minist & Prov, Key Lab Evaluat & Utilizat Special Crops Germplasm, Chongqing 401329, Peoples R China

关键词： Raphanus sativus; HSP70 family genes; Expression patterns; Abiotic stresses; Plasmodiophora brassicae

期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.3； 五年影响因子：5.2 ）

ISSN： 1471-2229

年卷期： 2024 年 24 卷 1 期

页码：

收录情况： SCI

摘要： The 70 kD heat shock proteins (HSP70s) represent a class of molecular chaperones that are widely distributed in all kingdoms of life, which play important biological roles in plant growth, development, and stress resistance. However, this family has not been systematically characterized in radish (Raphanus sativus L.). In this study, we identified 34 RsHSP70 genes unevenly distributed within nine chromosomes of R. sativus. Phylogenetic and multiple sequence alignment analyses classified the RsHSP70 proteins into six distinct groups (Group A-F). The characteristics of gene structures, motif distributions, and corresponding cellular compartments were more similar in closely linked groups. Duplication analysis revealed that segmental duplication was the major driving force for the expansion of RsHSP70s in radish, particularly in Group C. Synteny analysis identified eight paralogs (Rs-Rs) in the radish genome and 19 orthologs (Rs-At) between radish and Arabidopsis, and 23 orthologs (Rs-Br) between radish and Chinese cabbage. RNA-seq analysis showed that the expression change of some RsHSP70s were related to responses to heat, drought, cadmium, chilling, and salt stresses and Plasmodiophora brassicae infection, and the expression patterns of these RsHSP70s were significantly different among 14 tissues. Furthermore, we targeted a candidate gene, RsHSP70-23, the product of which is localized in the cytoplasm and involved in the responses to certain abiotic stresses and P. brassicae infection. These findings provide a reference for further molecular studies to improve yield and stress tolerance of radish.

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