Genome-wide identification of the heat shock transcription factor gene family in two kiwifruit species

Frontiers in Plant Science

Plant Science

Zupeng Wang¹  Jing Tu²  Endian Yang²  Hongwen Huang²  Yi Zhang²  Juan Luo²  Xinxia Cai²  Puxin Gao³  Muhammad Abid³ 

[1] College of Life Science, Nanchang University, Nanchang, China;College of Life Science, Nanchang University, Nanchang, China;Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang, China;Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang, China;

关键词: high temperature;    Hsf;    A. chinensis;    A. eriantha;    gene expression profiles;    heat stress;   

DOI  :  10.3389/fpls.2023.1075013

 received in 2022-10-20, accepted in 2023-08-28,  发布年份 2023

来源: Frontiers

【 摘 要 】

High temperatures have a significant impact on plant growth and metabolism. In recent years, the fruit industry has faced a serious threat due to high-temperature stress on fruit plants caused by global warming. In the present study, we explored the molecular regulatory mechanisms that contribute to high-temperature tolerance in kiwifruit. A total of 36 Hsf genes were identified in the A. chinensis (Ac) genome, while 41 Hsf genes were found in the A. eriantha (Ae) genome. Phylogenetic analysis revealed the clustering of kiwifruit Hsfs into three distinct groups (groups A, B, and C). Synteny analysis indicated that the expansion of the Hsf gene family in the Ac and Ae genomes was primarily driven by whole genome duplication (WGD). Analysis of the gene expression profiles revealed a close relationship between the expression levels of Hsf genes and various plant tissues and stress treatments throughout fruit ripening. Subcellular localization analysis demonstrated that GFP-AcHsfA2a/AcHsfA7b and AcHsfA2a/AcHsfA7b -GFP were localized in the nucleus, while GFP-AcHsfA2a was also observed in the cytoplasm of Arabidopsis protoplasts. The results of real-time quantitative polymerase chain reaction (RT-qPCR) and dual-luciferase reporter assay revealed that the majority of Hsf genes, especially AcHsfA2a, were expressed under high-temperature conditions. In conclusion, our findings establish a theoretical foundation for analyzing the potential role of Hsfs in high-temperature stress tolerance in kiwifruit. This study also offers valuable information to aid plant breeders in the development of heat-stress-resistant plant materials.

【 授权许可】

Unknown   
Copyright © 2023 Tu, Abid, Luo, Zhang, Yang, Cai, Gao, Huang and Wang