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

文献类型： 外文期刊

作者： Song, Wenting;Xue, Luyao;Jin, Xiaoshan;Liu, Xiaoqing;Chen, Xiaoxia;Wu, Xinru;Cui, Mengmeng;Liu, Qianyu;Wang, Dawei

作者机构：

关键词： Tobacco (Nicotiana tabacum L.);SWEET family genes;NtSWEET12i;Drought and saline-alkali stresses

期刊名称： BMC PLANT BIOLOGY

ISSN： 1471-2229

年卷期： 2025 年 25 卷 1 期

页码：

收录情况： SCIE（2025版）

摘要： BackgroundSWEET (Sugar Will Eventually be Exported Transporter) proteins play vital roles in the transport of sugars, contributing to the regulation of plant development, hormone signaling, and responses to abiotic stress.ResultsIn this study, we identified 57 NtSWEETs in tobacco (Nicotiana tabacum L.), and then their physicochemical properties, chromosomal localization, synteny, phylogenetic relationships, genomic structure, promoter cis-elements, protein interaction network, tissue specificity, and expression pattern were systematically analyzed. In addition, NtSWEET12i improves drought and saline-alkali tolerance in tobacco by enhancing soluble sugars transport, ABA signaling, proline biosynthesis, and ROS scavenging. These findings illuminate the role of NtSWEETs, particularly NtSWEET12i, in regulating plant tolerance to drought and saline-alkali stresses.ConclusionsThis study offers new insights to enhance our understanding of the roles of NtSWEETs and identify potential genes involved in drought and saline-alkali tolerance of plants.Clinical trial numberNot applicable.

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