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The biosynthesis and signaling regulation of strigolactones in plants
Tingshan Yao1, Xiaofeng Xu2, Rangjin Xie1
1Citrus Research Institute, Southwest University, Chongqing 400712, China; National Citrus Engineering Research Center, Chongqing 400715, China.
Abstract:
Strigolactones (SLs) are a category of small signaling molecules derived from carotenoids and act as a novel and essential plant hormone regulating plant developmental processes and environmental responses. They also function as root chemical signals, regulating the symbiotic as well as parasitic interactions between arbuscular mycorrhizal fungi and root parasitic plants. Since SLs were discovered, their functions have been widely studied through genetic, biological, and physiological approaches, and significant progress has been made, especially some breakthroughs in understanding the biosynthesis, transport, and perception. This review focuses on the synthesis and signal transduction of SLs, as well as their functions in plant growth and development and adaptability to abiotic stresses. It also elaborates on the interaction mechanisms between SLs and other plant hormones and explores the potential applications in sustainable agricultural development.
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