蛛生真菌中一枝穗霉属新种

本文报道了采自于贵州省贵阳市黔灵山公园的一种寄生蜘蛛的枝穗霉属新种,蛛生枝穗霉Clonostachys aranearum。此新种具有两型产孢结构,A-型产孢结构：轮枝菌型,瓶梗散生,通常2-5个形成轮生体,圆柱形,至顶端略微变细,17.3-27×1.1-1.6μm。B-型产孢结构：帚状,5.4-16.2×1.1-2.2μm,窄楔形,渐细。大量产孢时,分生孢子叠瓦状排列。分生孢子表面光滑,透明,3.2-5.4×1.1-2.1μm,椭圆形,常弯曲。模式标本GZAC QLS0625保存在贵州大学菌种保藏中心。     

Exosporodiella gen. nov. – a new coelomycetous fungus on leaves of Phoenix from India

A new coelomycetous fungus Exosporodiella phoenixesa gen. et spec, nov., has been described and illustrated from the leaves of Phoenix from India.     

Morphology and molecular phylogeny ofTretopileus sphaerophorus, a synnematous hyphomycete with basidiomycetous affinities

Tretopileus sphaerophorus, a synnematous hyphomycete with basidiomycetous affinities was newly isolated from the decaying petiole and peduncle ofCocos nucifera collected in Depok, Indonesia. The species produced first a bulbil as a propagule on the top of a synnema. After the bulbil had fallen, the synnema proliferated about seven times to produce new bulbils, each time making conspicuous nodes at the upper part. By careful morphological observation, clamp connections were confirmed on the hyphae in the specimens and culture. In culture, each hyphal cell with or without a clamp was found to be dikaryotic by DAPI nuclear staining. Germination of the bulbils occurred first from projecting hyphal tips on their upper surface, which have been treated as germ pores. The inner structure of the bulbils, the hyaline mucus of the bulbils, and conidium-like hyphal fragments were also examined. Phylogenetically,T. sphaerophorus was inferred to be related to the Aphyllophorales based on the nuclear encoded small subunit (18S) rDNA using the homology search system (FASTA) and the neighbour-joining method. Part 10 in a series on the taxonomy of synnematous fungi.