文献类型： 外文期刊
作者： Deng, Qilin 1 ; Wang, Hongyang 1 ; Qiu, Yanhong 1 ; Wang, Dexin 1 ; Xia, Yang 1 ; Zhang, Yumeng 1 ; Pei, Manying 1 ; Zhao, Yinling 1 ; Xu, Xiulan 1 ; Zhang, Haijun 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Beijing Vegetable Res Ctr, State Key Lab Vegetable Biobreeding, Beijing 100097, Peoples R China
2.China Agr Univ, Coll Hort, Beijing 100193, Peoples R China
3.Beijing Acad Agr & Forestry Sci, Natl Engn Res Ctr Vegetables, Beijing Vegetable Res Ctr, Beijing 100097, Peoples R China
关键词： biological function; karrikins (KARs); KARRIKIN INSENSITIVE2 (KAI2); plant growth; stress tolerance; signal transduction
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.7 ）
ISSN： 1661-6596
年卷期： 2025 年 26 卷 6 期
页码：
收录情况： SCI
摘要： Karrikins (KARs), produced during wildfires, are bioactive compounds that stimulate seed germination in fire-prone ecosystems and influence broader plant-environment interactions. These compounds act through the alpha/beta hydrolase receptor KARRIKIN INSENSITIVE2 (KAI2), which perceives KARs as analogs of the hypothesized phytohormone KAI2 ligand (KL). KAR signaling shares molecular parallels with strigolactones (SLs), another class of butenolide plant hormones, and regulates diverse processes such as seedling development, root architecture, photomorphogenesis, and stress responses. Despite its multifaceted roles, the mechanistic basis of KAR-mediated regulation remains poorly understood. This review synthesizes insights into KAR signaling mechanisms, emphasizing recent advances in signal transduction pathways and functional studies. It also addresses key unresolved questions, including the identity of endogenous KL and the crosstalk between KARs and other hormonal networks. By elucidating these mechanisms, KAR-based strategies hold promises for enhancing crop resilience and sustainability, offering novel avenues for agricultural innovation in changing environments.
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