Genome-Wide Identification and Functional Analysis of the Genes of the ATL Family in Maize during High-Temperature Stress in Maize

Author:

Ding Haiping1,Li Xiaohu2,Zhuge Shilin2ORCID,Du Jiyuan2,Wu Min2,Li Wenlong2,Li Yujing2,Ma Haoran2,Zhang Peng2,Wang Xingyu2,Lv Guihua13,Zhang Zhiming2,Qiu Fazhan1ORCID

Affiliation:

1. Hubei Hongshan Laboratory, National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China

2. National Key Laboratory of Wheat Breeding, College of Life Sciences, Shandong Agricultural University, Taian 271018, China

3. Zhejiang Academy of Agricultural Sciences, Institute of Maize and Featured Upland Crops, Hangzhou 310015, China

Abstract

Maize is a significant food and feed product, and abiotic stress significantly impacts its growth and development. Arabidopsis Toxicosa en Levadura (ATL), a member of the RING-H2 E3 subfamily, modulates various physiological processes and stress responses in Arabidopsis. However, the role of ATL in maize remains unexplored. In this study, we systematically identified the genes encoding ATL in the maize genome. The results showed that the maize ATL family consists of 77 members, all predicted to be located in the cell membrane and cytoplasm, with a highly conserved RING domain. Tissue-specific expression analysis revealed that the expression levels of ATL family genes were significantly different in different tissues. Examination of the abiotic stress data revealed that the expression levels of ATL genes fluctuated significantly under different stress conditions. To further understand the biological functions of maize ATL family genes under high-temperature stress, we studied the high-temperature phenotypes of the maize ZmATL family gene ZmATL10 and its homologous gene AtATL27 in Arabidopsis. The results showed that overexpression of the ZmATL10 and AtATL27 genes enhanced resistance to high-temperature stress.

Funder

National Key R&D Program

National Key Research and Development Program of China

National Natural Science Foundation of China

Taishan Scholars Program of Shandong Province

Publisher

MDPI AG

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