Induction of Nectriapyrone Biosynthesis in the Rice Blast Fungus <i>Pyricularia oryzae</i>
by Disturbance of the Two-Component Signal Transduction System
作者:Takayuki Motoyama、Toshihiko Nogawa、Toshiaki Hayashi、Hiroshi Hirota、Hiroyuki Osada
DOI:10.1002/cbic.201800620
日期:2019.3.1
metabolism genes are poorly expressed under laboratory conditions. Nectriapyrones are known as secondary metabolites produced mainly by symbiotic fungi, including endophytes and plant pathogens. Herein, we show the induction of nectriapyrone production in the rice blast fungus Pyricularia oryzae. The two-component signal transduction system was disturbed by disrupting OSM1 and PoYPD1, which encoded a HOG
大多数真菌次级代谢基因在实验室条件下表达不佳。Nectriapyrones被称为主要由共生真菌产生的次级代谢产物,包括内生菌和植物病原体。在本文中,我们显示了稻瘟病菌稻瘟病菌中产生吡喃酮的诱导。中断OSM1和PoYPD1干扰了两组分信号转导系统,后者分别编码HOG MAP激酶和含His的磷酸转移(HPt)蛋白。这诱导了两种聚酮化合物的产生:Nectriapyrone及其羟基类似物。Nectriapyrone生物合成基因簇由一个聚酮化合物合酶基因(NEC1)和一个O-甲基转移酶基因(NEC2)组成。这两个基因的过表达诱导了Nectriapyrone和5个Nectriapyrone类似物的过量生产,包括新的衍生产品。水稻感染不需要烟酰胺酮生产。Nectriapyrone的结构与链霉菌属菌种产生的杀菌素相似,Nectriapyrone抑制灰链霉菌的生长。