Tomentella subamyloidea sp nov and T. radiosa (Thelephoraceae, Hymenomycetes, Basidiomycota) from Australia
Tomentella subamyloidea sp nov and T. radiosa (Thelephoraceae, Hymenomycetes, Basidiomycota) from Australia
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DOI：
10.1071/sb00031
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发表时间：
2001-01-01
影响因子：
1.6
通讯作者：
Bougher, NL
中科院分区：
文献类型：
--
作者：
Agerer, R;Bougher, NL
描述了两种澳大利亚绒毛状真菌。新种亚淀粉毛孢Tomentella subamyloidea的特征是近球形孢子，具有均匀分布的小刺和细尖栓，在Melzer试剂中略呈蓝色。在靠近基质的厚壁菌丝壁上也可见轻微的淀粉样反应。其他显著特征包括在菌丝和担子上的蓝色颗粒，以及缺乏根型。辐射毛门菌孢子呈三角形，疣状，菌丝排列松散，根形均匀。轻微的淀粉质仅限于边缘的丝状菌丝帽状增厚。辐射毛苔与外生菌根种近淡紫毛苔关系密切，前者也可能形成菌根，因为其子实体发生在土壤表面的燃烧的木质残体上。亚淀粉被毛孢（Tomentella subamyloidea）在解剖学上具有一些可被认为是拟形的象菌科（Thelephoraceae）内的特征，例如薄的粉质子实体、缺乏根状体、一致存在的夹子和缺乏囊状体。相比之下，Tomentella radiosa有一些解剖学特征，可以被认为是更先进的，例如，在这个物种中简单的根状体的形成和明显的裂孢子。
Two species of Australian tomentelloid fungi are described. The new species Tomentella subamyloidea is characterised by subglobose spores with evenly distributed echinuli and apiculi plugs that turn slightly bluish in Melzer's reagent. A slight amyloid reaction is also apparent in the walls of very thick-walled hyphae close to the substrate. Other significant characteristics include blue granules on subicular and subhymenial hyphae and on basidia and the lack of rhizomorphs. Tomentella radiosa has triangular, warty spores and uniform rhizomorphs with rather loosely arranged hyphae. A slight amyloidy is restricted to cap-like thickenings of the marginal subicular hyphae. Tomentella radiosa is closely related to the ectomycorrhizal species Tomentella sublilacina and the former may also form mycorrhizae as its fruitbodies occur on burnt woody debris at the soil surface. Tomentella subamyloidea has some anatomical features that can be regarded as plesiomorphic within the family Thelephoraceae, e.g. thin farinose fruitbodies, lack of rhizomorphs, consistent presence of clamps and lack of cystidia. In contrast, Tomentella radiosa has some anatomical features that can be regarded as being more advanced, e.g. the formation of rhizomorphs, simple in this species and distinctly lobed spores.