Elucidation of the origin of strigolactones in the plant kingdom

独脚金内酯是植物根系分泌的一类物质，是根际共生体、丛枝菌根真菌和根寄生植物之间的通讯信号。在植物中，SL作为一类新的植物激素调节茎和根的结构。在这项研究中，SL生产地钱，这是进化最远离被子植物，并通过蕨类卷柏moellendorffii进行了检查。LC-MS/MS和GC-MS分析证实地钱和S. moellendorffii提取物中分离鉴定了6个新的SL。这些结果表明，SL的存在时，植物第一次殖民土地。

Strigolactones (SLs) are released from plant roots and function as communication signals for symbionts arbuscular mycorrhizal fungi and root parasitic plants in the rhizosphere. In planta, SLs function as a novel class of plant hormones regulating shoot and root architecture. In this study, SLs produced by Marchantia polymorpha, which is evolutionary most apart from angiosperms, and by a fern Selaginella moellendorffii were examined. LC-MS/MS and GC-MS analyses confirmed the presence of SLs in Marchantia and S. moellendorffii extracts, and identified several SLs, and six novel SLs, respectively. These results indicate that SLs existed when plants first colonized land.