独脚金内酯如何改善植物的养分缺乏？
How Do Strigolactones Ameliorate Nutrient Deficiencies in Plants?
机构信息
Graduate School of Agriculture, Ehime University, Matsuyama 790-8566, Japan.
出版信息
Cold Spring Harb Perspect Biol. 2019 Aug 1;11(8):a034686. doi: 10.1101/cshperspect.a034686.
Abstract
Strigolactones (SLs), a group of plant secondary metabolites, play an important role as a host recognition signal for symbiotic arbuscular mycorrhizal (AM) fungi in the rhizosphere. SLs promote symbioses with other beneficial microbes, including root nodule bacteria. Root parasitic weeds also take advantage of SLs as a clue to locate living host roots. In plants, SLs function as plant hormones regulating various growth and developmental processes including shoot and root architectures. Plants under nutrient deficiencies, especially that of phosphate, promote SL production and exudation to attract symbionts and to optimize shoot and root architecture.
摘要
独脚金内酯（SLs）是一组植物次生代谢物，在根际作为共生菌丛枝菌根（AM）真菌的宿主识别信号发挥着重要作用。SLs 促进了与其他有益微生物的共生，包括根瘤菌。根寄生杂草也利用 SLs 作为线索来定位活宿主根。在植物中，SLs 作为植物激素发挥作用，调节包括地上部和根系结构在内的各种生长和发育过程。在养分缺乏，特别是缺磷的情况下，植物会促进 SL 的产生和分泌，以吸引共生体并优化地上部和根系结构。
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