中文摘要：本文报道了一种从新西兰惠灵顿玉米田凋落物中回收到的新的产B型单端孢霉烯毒素菌的分子和形态特征，描述为Fusarium praegraminearum sp. Nov。致病性试验表明F. praegraminearum能诱导小麦中度赤霉病。
外文摘要：We report on the molecular and morphological characterization of a novel type B trichothecene toxin-producing species (i.e. B clade) recovered from litter in a maize field near Wellington, New Zealand, which is described as Fusarium praegraminearum sp. nov. This species was initially identified as F. acuminatum based on morphological characters. However, it differs from this species by producing longer, slightly asymmetrically curved macroconidia in which the apical cell is not as pointed and by its much faster colony growth rate on agar. Molecular phylogenetic analyses of portions of 13 genes resolved F. praegraminearum as the most basal species within the B clade. Mycotoxin analyses demonstrated that it was able to produce 4-acetylnivalenol and 4,15-diacetylnivalenol trichothecenes, the nontrichothecene sesquiterpenes culmorin and hydroxy-culmorins, and the estrogen zearalenone in vitro. Results of a pathogenicity experiment revealed that F. praegraminearum induced moderate head blight on wheat.
外文关键词：genotyping；morphology；pathogenicity；phylogenetics；RPB1；RPB2；trichothecene；zearalenone
作者：Grafenhan, T；Johnston, PR；Vaughan, MM；McCormick, SP；Proctor, RH；Busman, M；Ward, TJ；O'Donnell, K
作者单位：Canadian Grain Commiss
期刊名称：MYCOLOGIA
期刊影响因子：2.638
出版年份：2016
出版刊次：6
点击下载：Fusarium praegraminearum sp. nov，一种新的在新西兰诱导小麦赤霉病的产雪腐镰刀菌烯醇病原体