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Genome-Wide Identification and Characterization of Caffeic Acid O-Methyltransferase Gene Family in Soybean.

ABSTRACT: Soybean is one of the most important legumes, providing high-quality protein for humans. The caffeic acid O-methyltransferase (COMT) gene has previously been demonstrated to be a critical gene that regulates lignin production in plant cell walls and plays an important function in plant growth and development. However, the COMT gene family has not been studied in soybeans. In this study, 55 COMT family genes in soybean were identified by phylogenetic analysis and divided into two groups, I and II. The analysis of conserved domains showed that all GmCOMTs genes contained Methyltransferase-2 domains. Further prediction of cis-acting elements showed that GmCOMTs genes were associated with growth, light, stress, and hormonal responses. Eventually, based on the genomic data of soybean under different stresses, the results showed that the expression of GmCOMTs genes was different under different stresses, such as salt and drought stress. This study has identified and characterized the COMT gene family in soybean, which provides an important theoretical basis for further research on the biological functions of COMT genes and promotes revealing the role of GmCOMTs genes under stress resistance.

SUBMITTER: Zhang X

PROVIDER: S-EPMC8703356 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:Sucrose nonfermenting 2 (Snf2) family proteins are the core component of chromatin remodeling complexes that can alter chromatin structure and nucleosome position by utilizing the energy of ATP, playing a vital role in transcription regulation, DNA replication, and DNA damage repair. Snf2 family proteins have been characterized in various species including plants, and they have been found to regulate development and stress responses in Arabidopsis. Soybean (Glycine max) is an important food and economic crop worldwide, unlike other non-leguminous crops, soybeans can form a symbiotic relationship with rhizobia for biological nitrogen fixation. However, little is known about Snf2 family proteins in soybean. In this study, we identified 66 Snf2 family genes in soybean that could be classified into six groups like Arabidopsis, unevenly distributed on 20 soybean chromosomes. Phylogenetic analysis with Arabidopsis revealed that these 66 Snf2 family genes could be divided into 18 subfamilies. Collinear analysis showed that segmental duplication was the main mechanism for expansion of Snf2 genes rather than tandem repeats. Further evolutionary analysis indicated that the duplicated gene pairs had undergone purifying selection. All Snf2 proteins contained seven domains, and each Snf2 protein had at least one SNF2_N domain and one Helicase_C domain. Promoter analysis revealed that most Snf2 genes had cis-elements associated with jasmonic acid, abscisic acid, and nodule specificity in their promoter regions. Microarray data and real-time quantitative PCR (qPCR) analysis revealed that the expression profiles of most Snf2 family genes were detected in both root and nodule tissues, and some of them were found to be significantly downregulated after rhizobial infection. In this study, we conducted a comprehensive analysis of the soybean Snf2 family genes and demonstrated their responsiveness to Rhizobia infection. This provides insight into the potential roles of Snf2 family genes in soybean symbiotic nodulation.

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Genome-Wide Identification and Characterization of Caffeic Acid O-Methyltransferase Gene Family in Soybean.

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