Functional characterization of wheat ent-kaurene(-like) synthases indicates continuing evolution of labdane-related diterpenoid metabolism in the cereals
作者:Ke Zhou、Meimei Xu、Mollie Tiernan、Qian Xie、Tomonobu Toyomasu、Chizu Sugawara、Madoka Oku、Masami Usui、Wataru Mitsuhashi、Makiko Chono、Peter M. Chandler、Reuben J. Peters
DOI:10.1016/j.phytochem.2012.08.021
日期:2012.12
gibberellin biosynthesis is evident from the relevant expanded and functionally diverse family of ent-kaurene synthase-like (KSL) genes found in rice the (OsKSLs). Herein reported is the biochemical characterization of a similarly expansive family of KSL from wheat (the TaKSLs). In particular, beyond ent-kaurene synthases (KS), wheat also contains several biochemically diversified KSLs. These react either
小麦 (Triticum aestivum) 和水稻 (Oryza sativa) 是农业上最重要的两种谷类作物。众所周知,大米可以产生许多用作植物抗毒素和/或化感物质的二萜类天然产物。具体来说,这些是与劳丹脂相关的二萜类化合物,源自特征性劳丹二烯基/共聚二磷酸 (CPP),其与赤霉素生物合成的生物合成关系从相关的扩展和功能多样的 ent-kaurene 合酶 (KSL) 基因家族中发现大米(OsKSLs)。本文报道了来自小麦的类似广泛的 KSL 家族(TaKSL)的生化特征。特别是,除了 ent-kaurene 合酶 (KS),小麦还包含几种生化多样化的 KSL。它们与赤霉素生物合成中常见的 ent-CPP 中间体或与小麦中发现的 CPP 的正常立体异构体反应(如描述小麦 CPP 合酶的随附论文所证明)。与大麦 (Hordeum vulgare) KS 的比较表明单子叶植物 KS 的保护,至少在小谷物谷物中