文献类型： 外文期刊

作者： Huang, Mingqi ¹ ; Xiao, Jiangyuan ¹ ; Fei, Fanzhen ¹ ; Zhou, Xiaoyun ² ; Lei, Bin ² ; Zhang, Yigong ¹ ;

作者机构： 1.Xinjiang Univ, Coll Life Sci & Technol, Xinjiang Key Lab Biol Resources & Genet Engn, Urumqi 830017, Xinjiang, Peoples R China

2.Xinjiang Acad Agr Sci, Inst Agr Resources & Environm, Urumqi 830091, Peoples R China

关键词： NF-YC2; ABI3; Syntrichia caninervis; Abiotic stress

期刊名称：ENVIRONMENTAL AND EXPERIMENTAL BOTANY （ 影响因子：4.7； 五年影响因子：5.4 ）

ISSN： 0098-8472

年卷期： 2025 年 237 卷

页码：

收录情况： SCI

摘要： The Nuclear Factor Y (NF-Y) transcription factor family plays a crucial role in plant abiotic stress responses. However, its function in Syntrichia caninervis, a desiccation-tolerant desert moss and an ideal model organism for investigating plant stress response mechanisms, remains poorly understood. In this study, we identified ScNF-YC2, a member of the NF-Y family, as a potential interacting partner of ScABI3, a key regulator of the abscisic acid (ABA) signaling pathway. Through yeast two-hybrid (Y2H), pull-down, and bimolecular fluorescence complementation (BiFC) assays, we confirmed the physical interaction between ScNF-YC2 and ScABI3 in the nucleus. Further analysis revealed that ScNF-YC2 is relatively conserved and is significantly induced under drought, salt, and ABA treatments. Overexpression of ScNF-YC2 in Arabidopsis thaliana and S. caninervis exacerbated the sensitivity to salt and drought stress by elevating reactive oxygen species (ROS) accumulation and suppressing antioxidant enzyme activity. Conversely, ScNF-YC2 overexpression partly reduced sensitivity to ABA in these plant species. These findings suggest that ScNF-YC2 plays a critical role in regulating abiotic stress responses in S. caninervis through its interaction with ScABI3, by modulating ROS homeostasis. Thus, the study highlights the subtle role of NF-Y transcription factors in regulating stress responses in desert moss.