Wei Chang, Huina Zhao, Hongqiao Chen, Guixiang Jiao, Jing Yu, Bing Wang, Haiqian Xia, Boyu Meng, Xiaodong Li, Mengna Yu, Shengting Li, Mingchao Qian, Yonghai Fan, Kai Zhang, Bo Lei, Kun Lu
Leaf senescence is a vital aspect of plant physiology and stress responses and is induced by endogenous factors and environmental cues.. The plant-specific NAC (NAM, ATAF1/2, CUC2) transcription factor family influences growth, development, and stress responses in Arabidopsis (Arabidopsis thaliana) and other species. However, the roles of NACs in tobacco (Nicotiana tabacum) leaf senescence are still unclear. Here, we report that NtNAC56 regulates leaf senescence in tobacco. Transgenic plants overexpressing NtNAC56 (NtNAC56-OE) showed induction of senescence-related genes and exhibited early senescence and lower chlorophyll content compared to wild-type (WT) plants and the Ntnac56-19 mutant...
March 1, 2024: Plant Physiology