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首页> 外文期刊>Australasian Plant Pathology >Botryosphaeria spp. associated with eucalypts in Western Australia, including the description of Fusicoccum macroclavatum sp. nov.
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Botryosphaeria spp. associated with eucalypts in Western Australia, including the description of Fusicoccum macroclavatum sp. nov.

机译：灰霉菌属。与西澳大利亚州的桉树相关，包括对镰刀菌（Fusicoccum macroclavatum sp。）的描述。十一月

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摘要

Botryosphaeria spp. are common endophytes and canker pathogens of many woody plants including eucalypts. Eucalyptus globulus, a species endemic to eastern Australia, dominates the plantation industry in Western Australia. Plantations are often adjacent to remnant native eucalypt forest and each vegetation type (plantation or forest) could harbour pathogens to which the other has not been exposed. A survey of Botryosphaeria spp. associated with E. globulus and native Eucalyptus spp. in Western Australia revealed four distinct culture morphologies to be present among 147 isolates. Representative isolates of each type were characterised based upon morphological features and comparisons of a combined DNA dataset including the internal transcribed spacer, a part of the beta -tubulin gene and part of the elongation factor 1 alpha (EF-1 alpha ) gene. The majority of the isolates (95%) were Botryosphaeria australis. Of the remaining isolates, one was Botryosphaeria parva, three were Dichomera eucalypti (an anamorph of an unknown Botryosphaeria sp.) and the remaining four isolates were identified as representative of a new species described here as Fusicoccum macroclavatum sp. nov. The new species resided alone in a well supported clade and differed morphologically from other Fusicoccum spp. by having large, predominantly elongate-clavate conidia. Fusicoccum macroclavatum sp. nov. was the most pathogenic of the four species, and its rare occurrence only on eucalypt species endemic to eastern Australia suggests that this species has been introduced to Western Australia..
机译：灰霉菌属。是许多木本植物（包括桉树）的常见内生菌和溃疡病病原体。球形桉树是澳大利亚东部的特有物种，在西澳大利亚州的种植业中占主导地位。人工林通常与残留的原始桉树森林相邻，并且每种植被类型（人工林或森林）都可能藏有其他尚未暴露的病原体。灰霉菌的调查。与E. globulus和天然桉树属有关。在澳大利亚西部的147个菌株中发现了四种不同的培养形态。基于形态特征和包括内部转录间隔区，一部分β-微管蛋白基因和一部分延伸因子1α（EF-1 alpha）基因在内的组合DNA数据集的比较，对每种类型的代表性分离物进行了表征。大部分分离株（95％）是澳大利亚葡萄孢。在其余的分离物中，一个是细小孢子菌，三个是桉木（一种不明的孢子菌的无性型），其余的四个分离物被鉴定为代表这里描述的新种的大镰刀菌（Fusicoccum macroclavatum sp）。十一月新物种单独生活在一个支撑良好的进化枝中，形态上不同于其他镰刀菌属。拥有较大的，主要是细长的棒状分生孢子。 Fusicoccum macroclavatum sp。十一月是四个物种中最具致病性的物种，仅在澳大利亚东部地区特有的桉树物种中才罕见发生，表明该物种已被引入西澳大利亚州。

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