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首页> 外文期刊>Mycologia >Xylogone ganodermophthora sp. nov., an ascomycetous pathogen causing yellow rot on cultivated mushroom Ganoderma lucidum in Korea.
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Xylogone ganodermophthora sp. nov., an ascomycetous pathogen causing yellow rot on cultivated mushroom Ganoderma lucidum in Korea.

机译：木酮木豆 sp。十一月，一种在韩国栽培的蘑菇灵芝上引起黄腐病的子囊病病原体。

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摘要

Yellow rot, caused by an ascomycetous fungus having a distinctive arthroconidial anamorph, is the most destructive disease of cultivated Ganoderma lucidum in Korea, but the identity of the yellow rot pathogen (YRP) remains uncertain. Isolates have been identified as Xylogone sphaerospora (with putative anamorph Sporendonema purpurascens) or as Arthrographis cuboidea. Therefore we used morphological features, pathogenicity tests and phylogenetic analyses of DNA sequences from the nuclear ribosomal genes, including partial small subunit and internal transcribed spacer regions, and from the gene encoding RNA polymerase second largest subunit to evaluate the relationship between YRP isolates and these species. YRP isolates formed a distinct subgroup within a clade that included X. sphaerospora, A. cuboidea and Scytalidium lignicola, the type species of Scytalidium, but the disposition of the clade within the Leotiomycetes was uncertain. We describe Xylogone ganodermophthora sp. nov. and Scytalidium ganodermophthorum sp. nov. for the teleomorph and anamorph of YRP respectively. Arthrographis cuboidea is reclassified as Scytalidium cuboideum comb. nov., and the anamorph of X. sphaerospora is named Scytalidium sphaerosporum sp. nov. In pathogenicity tests only X. ganodermophthora caused disease in Ganoderma lucidum. Amplified fragment length polymorphism analyses showed that X. ganodermophthora populations from diseased fruiting bodies or from oak wood in Korea consisted of two clonal groups.
机译：黄腐病是由具有特殊的节肢孢子无形体的子囊菌引起的，是韩国栽培的灵芝中最具破坏性的疾病，但黄腐病原体（YRP）的身份仍然不确定。分离物被鉴定为球形木霉（假定为无定形菌 Sporendonema purpurascens ）或 Arthrographis cuboidea 。因此，我们使用了来自核糖体基因（包括部分小亚基和内部转录间隔区）以及编码RNA聚合酶第二大亚基的基因的DNA序列的形态特征，致病性测试和系统发育分析，来评估YRP分离物与这些物种之间的关系。 。 YRP分离株在包含X的进化枝内形成一个独特的亚组。 sphaerospora ， A。滑藻的类型种类是cuboidea 和 Scytalidium lignicola ，但是在Leotiomycetes中的进化枝的分布是不确定的。我们描述木酮ganodermophthora sp。十一月和 Scytalidium ganodermophthorum sp。十一月分别代表YRP的同胚异形和变形。 Arthrographis cuboidea 被重新归类为 Scytalidium cuboideum 梳。 nov。和 X的变形。 sphaerospora 被命名为 Scytalidium sphaerosporum sp。十一月在致病性测试中，只有 X。灵芝导致灵芝的疾病。扩增的片段长度多态性分析显示X。韩国患病子实体或橡树中的ganodermophthora 种群由两个克隆群组成。

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