Evidence map›Paper›PMID 41781867›Full record

ArticleBMC plant biology2026

Genome-wide identification and functional analysis of the SAMS gene family in peanut reveal the role of Ah6Q1KS5 in resistance to bacterial wilt.

Yanzhe Li, Sasa Hu, Kai Zhao, Yue Tu, Lujie Gao, Zenghui Cao, Xingli Ma, Fangping Gong, Zhongfeng Li, Ding Qiu and 3 more

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Article in BMC plant biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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13 authors.

Yanzhe Li *College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China.
Sasa Hu *College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China.
Kai Zhao *College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China. zhaokai@henau.edu.cn.
Yue TuCollege of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China.
Lujie GaoCollege of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China.
Zenghui CaoCollege of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China.
Xingli MaCollege of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China.
Fangping GongCollege of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China.
Zhongfeng LiCollege of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China.
Ding QiuCollege of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China.
Rui RenCollege of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China.
Kunkun ZhaoCollege of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China.
Dongmei YinCollege of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China. yindm@henau.edu.cn.

Funding

Key Scientific and Technological Project of Henan Province HARS-22-05-G1Key Scientific Research Project in Colleges and Universities of Henan Province of China 25A210004National Key Research and Development Program 2023YFD1202800National Natural Science Foundation of China Youth Science Fund Project 32501985Special Support Fund for High-Level Talents of Henan Agricultural University 30501952
6 · The paper itself

Abstract

backgroundS-adenosyl-L-methionine synthetase (SAMS) catalyzes the synthesis of S-adenosylmethionine (SAM), a universal methyl donor, and regulate plant growth, development, and stress responses. Although SAMS genes have been functionally characterized in several plant species, their roles in peanut (Arachis hypogaea L.) remain unclear.

resultsHere, we conducted a genome-wide identification and characterization of the SAMS gene family in peanut. Phylogenetic analysis clustered these genes into five groups, revealing close evolutionary relationships with soybean SAMS homologs. Conserved domain and motif analyses indicated that all AhSAMS proteins share highly conserved functional features. Expression profiling revealed tissue-specific patterns, AhFJ1AK4 was highly expressed, while AhRG5YED and AhPNM9T4 were preferentially expressed in reproductive organs. Promoter analysis identified abundant cis-regulatory elements related to stress and hormone responses. Upon Ralstonia solanacearum infection and treatments with salicylic acid (SA), abscisic acid (ABA), and methyl jasmonate (MeJA), AhRG5YED and Ah6Q1KS5 were significantly induced in the resistant cultivar H108. Functional validation demonstrated that overexpression of Ah6Q1KS5 in peanut and tobacco reduced cell death, and significantly inhibited bacterial growth, confirming its role in positively regulating bacterial wilt resistance responses.

conclusionsThis study presents the first comprehensive genome-wide analysis of the AhSAMS gene family in peanut, providing insights into their functional diversification. In particular, Ah6Q1KS5 is highlighted as a candidate gene contributing to resistance responses, providing a genetic resource and theoretical foundation for future molecular breeding aimed at enhancing disease resistance in peanut.

Indexed as

ArachisDisease ResistanceGenes, PlantPlant DiseasesPlant ProteinsRalstonia solanacearumGene Expression Regulation, PlantMultigene FamilyPhylogenyPlant ProteinsBacterial wilt resistanceGene expressionPeanutSAMS gene

Identifiers

PMID41781867
PMCPMC13067592

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