Genome-Wide Identification of RTE Gene Family Members in Sweet Potato and Their Expression Patterns Under Salt and Drought Stress

Xiaojie Jin; Heping Wan; Feng Yu; Xinsun Yang; Rongchang Yang

doi:10.3390/cimb48010073

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Genome-Wide Identification of RTE Gene Family Members in Sweet Potato and Their Expression Patterns Under Salt and Drought Stress

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Genome-Wide Identification of RTE Gene Family Members in Sweet Potato and Their Expression Patterns Under Salt and Drought Stress

Xiaojie Jin, Heping Wan, Feng Yu, Xinsun Yang and Rongchang Yang

Current issues in molecular biology, Vol.48(1), 73

2026

DOI: https://doi.org/10.3390/cimb48010073

PMID: 41614903

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Abstract

sweet potato

salt stress

drought stress

gene expression profiling

RTE gene family

Ethylene is a multifunctional phytohormone that regulates plant growth, development, and responses to abiotic/biotic stresses. RTE1 (Reversion-To-Ethylene Sensitivity1) acts as a negative regulator of the ethylene responses in Arabidopsis by positively regulating ethylene receptor ETR1. However, the role of RTE genes in sweet potato (Ipomoea batatas), an import food crop worldwide, remains largely unknown, particularly their involvement in abiotic stress adaptation. In this study, we identified 23 RTE genes in sweet potato, distributed across 21 chromosomes and one scaffold BrgTig00017944. The phylogenetic analysis divided them into two groups, the RTE1 group and RTH (RTE1-Homolog) group. Synteny analysis revealed that whole genome duplication (WGD) was the major force of expansion of the IbRTE gene family. Multiple cis-acting elements responsive to hormones and stress were found in the promoter region of IbRTE genes. The transcriptome expression profiling showed that the majority of IbRTEs have tissue-specific and differential expression under drought and salt stresses. Meanwhile, the qRT–PCR results showed that the 14 representatives IbRTEs have differential expression profilings under salt (NaCl) and drought (PEG) treatments. These findings suggest that the IbRTE genes may be involved in sweet potato’s adaptive responses to salt and drought, providing a valuable foundation for further functional studies.

Details

Title: Genome-Wide Identification of RTE Gene Family Members in Sweet Potato and Their Expression Patterns Under Salt and Drought Stress
Authors/Creators: Xiaojie Jin - Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
Heping Wan - Jianghan University
Feng Yu - Hubei University
Xinsun Yang - Hubei Academy of Agricultural Sciences
Rongchang Yang - Murdoch University
Publication Details: Current issues in molecular biology, Vol.48(1), 73
Publisher: MDPI
Number of pages: 16
Grant note: HBZY2023B002, HBZY2023B002-4 / Funding for seed industry high-quality development of Hubei Province 2023EHA066 / Technology Innovation Talents and Services Project of Hubei Province
Identifiers: 991005859693607891
Murdoch Affiliation: School of Agricultural Sciences
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: No Topic Assigned; No Topic Assigned; No Topic Assigned
Web Of Science research areas: Biochemistry & Molecular Biology
ESI research areas: Molecular Biology & Genetics