New strigolactone mimics: Structure–activity relationship and mode of action as germinating stimulants for parasitic weeds
作者:Binne Zwanenburg、Sandip K. Nayak、Tatsiana V. Charnikhova、Harro J. Bouwmeester
DOI:10.1016/j.bmcl.2013.07.004
日期:2013.9
Strigolactones (SLs) are new plant hormones with varies important bio-functions. This Letter deals with germination of seeds of parasitic weeds. Natural SLs have a too complex structure for synthesis. Therefore, there is an active search for SL analogues and mimics with a simpler structure with retention of activity. SL analogues all contain the D-ring connected with an enone moiety through an enol
Strigolactones(SLs)是具有多种重要生物功能的新型植物激素。这封信涉及寄生杂草种子的发芽。天然SL的合成结构太复杂。因此,正在积极寻找具有保留活性的更简单结构的SL类似物和模拟物。SL类似物均含有通过烯醇醚单元与烯酮部分连接的D-环。已经提出了一种水解SL类似物的新机理,该水解涉及与Sen-His-Asp催化三联体结合的双齿结合水和α,β-水解酶。新发现的SL模仿物仅在D环上带有一个合适的离去基团,位于C-5。提出了SL拟态蛋白的作用方式,目前提供了支持性证据。如预测的那样,D环的C-4处有一个额外的甲基会阻止寄生杂草种子的发芽。