Genome-wide analysis and expression profiling of the HD-ZIP gene family in kiwifruit
Kai-yu Ye,
Jie-wei Li,
Fa-ming Wang,
Jian-you Gao,
Cui-xia Liu,
Hong-juan Gong,
Bei-bei Qi,
Ping-ping Liu,
Qiao-sheng Jiang,
Jian-min Tang,
Quan-hui Mo
Affiliations
Kai-yu Ye
Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guangxi Institute of Botany
Jie-wei Li
Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guangxi Institute of Botany
Fa-ming Wang
Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guangxi Institute of Botany
Jian-you Gao
Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guangxi Institute of Botany
Cui-xia Liu
Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guangxi Institute of Botany
Hong-juan Gong
Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guangxi Institute of Botany
Bei-bei Qi
Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guangxi Institute of Botany
Ping-ping Liu
Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guangxi Institute of Botany
Qiao-sheng Jiang
Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guangxi Institute of Botany
Jian-min Tang
Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guangxi Institute of Botany
Quan-hui Mo
Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guangxi Institute of Botany
Abstract The homeodomain-leucine zipper (HD-Zip) gene family plays a pivotal role in plant development and stress responses. Nevertheless, a comprehensive characterization of the HD-Zip gene family in kiwifruit has been lacking. In this study, we have systematically identified 70 HD-Zip genes in the Actinidia chinensis (Ac) genome and 55 in the Actinidia eriantha (Ae) genome. These genes have been categorized into four subfamilies (HD-Zip I, II, III, and IV) through rigorous phylogenetic analysis. Analysis of synteny patterns and selection pressures has provided insights into how whole-genome duplication (WGD) or segmental may have contributed to the divergence in gene numbers between these two kiwifruit species, with duplicated gene pairs undergoing purifying selection. Furthermore, our study has unveiled tissue-specific expression patterns among kiwifruit HD-Zip genes, with some genes identified as key regulators of kiwifruit responses to bacterial canker disease and postharvest processes. These findings not only offer valuable insights into the evolutionary and functional characteristics of kiwifruit HD-Zips but also shed light on their potential roles in plant growth and development.