Functional Characterization of KNOX and BELL Genes in Temperature-Responsive Floral Morphogenesis of Passion Fruit (Passiflora edulis)
文献类型： 外文期刊
第一作者： Jiang, Xinni
作者： Jiang, Xinni;Miao, Jie;Zu, Weifan;Zhou, Ruohan;Zheng, Lexin;Wei, Ying;Lai, Chunmei;Zheng, Ping;Qin, Yuan;Niu, Xiaoping;Qin, Rongjuan;Zheng, Ping;Qin, Yuan;Wei, Xiuqing;Xu, Jiahui
作者机构：
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期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）
ISSN： 2223-7747
年卷期： 2025 年 14 卷 10 期
页码：
收录情况： SCI
摘要： Passion fruit (Passiflora edulis), a tropical crop of significant economic value, exhibits temperature-sensitive floral development. Here, we identified 23 TALE transcription factors (PeTALEs) and characterized their roles in floral organogenesis and thermal adaptation. Phylogenetic analysis classified PeTALEs into KNOX and BELL subfamilies, with conserved domain architectures and cis-regulatory elements linked to stress and hormone signaling. Spatiotemporal expression profiling revealed PeTALE21 as a key regulator of corona initiation, while PeTALE17 dominated in later floral stages. Temperature stress assays demonstrated cold-induced upregulation of PeTALE15/16/19/22 and heat-mediated suppression of PeTALE10/18/21. Yeast two-hybrid assays uncovered functional interactions between PeTALE3/16/18/22/23, highlighting a network governing floral thermoresilience. This study provides the first genome-wide analysis of PeTALEs, offering insights for breeding climate-resilient passion fruit varieties.
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