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首页> 外文期刊>Mycologia >Understanding lichenicolous heterobasidiomycetes: new taxa and reproductive innovations in Tremella s.l.
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Understanding lichenicolous heterobasidiomycetes: new taxa and reproductive innovations in Tremella s.l.

机译：了解地衣异种担子菌：银耳科的新分类和生殖创新。

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摘要

Four new lichenicolous Tremella species are described and characterized morphologically and molecularly. Tremella celata grows on Ramalina fraxinea, inducing the formation of inconspicuous galls, and having hyphae with incomplete clamps. Tremella endosporogena develops intrahymenially in the apothecia of Lecanora carpinea, having single-celled basidia and clampless hyphae. Tremella diederichiana is the name proposed for a species micromorphologically close to T. christiansenii but inducing the formation of small, pale galls on the thallus and apothecia of Lecidea aff. erythrophaea. Tremella variae grows on Lecanora varia thallus, instead of on the apothecia, as do the other known Tremella species parasitizing Lecanora s.l. Phylogenetic relationships and host specificity of these species are investigated and compared with other taxa that show morphological resemblances, phylogenetic affinities or similar hosts. The formation of mitotic conidia inside old basidia (endospores), which is a poorly known reproductive strategy in the Basidiomycota, is also a distinctive character of Tremella endosporogena. A discussion on the reproductive role and systematic implications of endospores is included.
机译：描述了四种新的地衣性银耳种类，并在形态和分子上进行了表征。银耳在拉玛琳娜fraxinea上生长，诱导不显眼的胆汁形成，并带有不完整的夹生菌丝。内生性银耳菌在Lecanora carpinea的附生细胞膜内发育，具有单细胞基底和无钳位的菌丝。银耳病菌是针对形态学上接近于克里斯蒂安氏梭菌的物种提出的名称，但是会导致在Lecidea aff的触角和失神症上形成小的，苍白的胆汁。红斑。变异的银耳在Lecanora varia thallus上生长，而不是在表皮上生长，其他已知的寄生于Lecanora s.l的银耳也是如此。研究了这些物种的亲缘关系和宿主特异性，并将其与其他形态相似，系统亲和性或相似宿主的分类单元进行了比较。在老基底（内生孢子）内部有丝分裂分生孢子的形成，这是在担子菌属中鲜为人知的繁殖策略，也是内生银耳的独特特征。包括有关内生孢子的生殖作用和系统意义的讨论。

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