Genome-wide identification of SWEET family genes and functional analysis of NtSWEET12i under drought and saline-alkali stresses in tobacco

• DOI: 10.1186/s12870-025-06190-w
• Publication Date: 2025-02-14T04:45:18Z
• Authors: Wenting Song; Luyao Xue; Xiaoshan Jin; Xiaoqing Liu; Xiaoxia Chen; Xinru Wu; Mengmeng Cui; Qianyu Liu; Dawei Wang
• Keywords: Identification

SWEET (Sugar Will Eventually be Exported Transporter) proteins play vital roles in the transport of sugars, contributing to regulation plant development, hormone signaling, and responses abiotic stress. In this study, we identified 57 NtSWEETs tobacco (Nicotiana tabacum L.), then their physicochemical properties, chromosomal localization, synteny, phylogenetic relationships, genomic structure, promoter cis-elements, protein interaction network, tissue specificity, expression pattern were systematically analyzed. addition, NtSWEET12i improves drought saline-alkali tolerance by enhancing soluble sugars transport, ABA proline biosynthesis, ROS scavenging. These findings illuminate role NtSWEETs, particularly NtSWEET12i, regulating stresses. This study offers new insights enhance our understanding identify potential genes involved plants. Not applicable.