ABCG Transporters in the Adaptation of Rice to Salt Stresses

• Published in: International journal of molecular sciences Vol. 25; no. 19; p. 10724
• Main Authors: Zhang, Dan, Hu, Yuanyi, Tang, Li, Du, Yaxi, Mao, Ruihua, Sheng, Xiabing, Liu, Huimin, Liu, Xiaolin, Zhao, Bingran, Lei, Dongyang
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 01.10.2024; MDPI
• Subjects: ABC transporters; ABCG transporter; Abiotic stress; Abscisic acid; Acclimatization (Plants); Adaptation, Physiological - genetics; ATP Binding Cassette Transporter, Subfamily G - genetics; ATP Binding Cassette Transporter, Subfamily G - metabolism; ATP-Binding Cassette Transporters - genetics; ATP-Binding Cassette Transporters - metabolism; Binding sites; Bioinformatics; Botanical research; Cadmium; Carrier proteins; Chromosomes; Crops; Environmental aspects; Gene Expression Regulation, Plant; Genes; Genetic engineering; Genomics; Oryza - genetics; Oryza - metabolism; Phylogenetics; Phylogeny; Physiological aspects; Plant growth; Plant Proteins - genetics; Plant Proteins - metabolism; Proteins; Rice; Salinity; Salt; Salt stress (Botany); Salt Stress - genetics; salt stress response; Salt Tolerance - genetics; Sorghum; Toxicity; Water shortages; yeast expression; China; ABCG transporter; yeast expression; salt stress response; rice
• ISSN: 1422-0067; 1661-6596; 1422-0067
• DOI: 10.3390/ijms251910724

The ATP-binding cassette (ABC) proteins are a diverse family of transmembrane transporter proteins widely identified in various organisms. The ABCG transporters belong to the G subfamily of the ABC transporter family. Rarely research on ABCG transporters involved in salt tolerance of rice was found. In this study, the evolutionary relationships, conserved motifs, intra- and inter-species homologous genes, and cis-acting elements of ABCG subfamily members were analyzed, and the expression changes of these genes under salt stress at 0 h, 3 h, and 24 h were detected. Based on these results, the candidate gene , which is induced by salt stress, was selected for further studies. Yeast experiments confirmed that the gene might be involved in the regulation of salt tolerance. The abcg7 mutant showed a higher degree of leaf wilting and a lower survival rate, exhibiting a salt-sensitive phenotype. Systematic analysis of this family in rice helps design effective functional analysis strategies and provides data support for understanding the role of ABCG transporters under salt stress.