Allene Oxide Synthase Pathway in Cereal Roots: Detection of Novel Oxylipin Graminoxins
作者:Alexander N. Grechkin、Anna V. Ogorodnikova、Alevtina M. Egorova、Fakhima K. Mukhitova、Tatiana M. Ilyina、Bulat I. Khairutdinov
DOI:10.1002/open.201800045
日期:2018.5
(9‐HPOD), and (9S,10E,12Z,15Z)‐9‐hydroperoxy‐10,12,15‐octadecatrienoic acid, respectively, via the corresponding allene oxides and cyclopropanones. The data indicate that conversion of the allene oxide into the cyclopropanone is controlled by soluble cyclase. The short‐lived cyclopropanones are hydrolyzed to products 1–3. The collective name “graminoxins” has been ascribed to oxylipins 1–3.
小麦,大麦和高粱的年轻根以及茉莉酸甲酯预处理的水稻幼苗,经历了针对以前未知的磷脂1到3的空前的氧化烯合酶途径。这些Favorskii类制品,(4 Ž)-2-戊基-4-十三烯-1,13-二酸(1),(2' Ž)-2-(2'-辛烯基) -癸烷1,10-二酸(2),和(2' ž,5' ž)-2-(2',5'-辛二烯) -癸烷-1,10-二酸(3),具有在侧链羧基功能,由他们的MS和NMR光谱数据揭示。化合物1 - 3是检测到的主要磷脂,以及相关的α-酮醇。产品13从(9生物合成Ž,11 ê,13小号)-13-氢过氧基9,11-十八碳二烯酸,(9小号,10 ê,12 Ž)-9-氧化氢-10,12-十八碳二烯酸(9‐HPOD)和(9 S,10 E,12 Z,15 Z)‐9‐氢过氧‐10,12,15‐十八碳三烯酸,分别通过相应的丙二烯氧化物和环丙烷酮。数据表明氧化烯到环氧丙烷的转化是由可溶性环化酶控制的。寿命短的环丙烷酮水解成产物1