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属:新热带灵芝属Neoganoderma

基本信息

  • 通用中文名Chinese name:新热带灵芝属
  • 拉丁学名Scientific Name:Neoganoderma


本文由 Uwiling 供稿



新热带灵芝属Neoganoderma是灵芝家族中罕为人知的单种属,目前明确包含一个种(截至2024年2月29日)。Neoganoderma neurosporum过去因其灵芝状的担子果形态被Furtado置于灵芝属Ganoderma中。后经Teixeira对其微观特征的研究,N. neurosporum具鸡冠孢芝状的担孢子,因而又被置于鸡冠孢芝属中。进入分子生物学时代后,Costa等人结合其担孢子内孢壁纹饰特征和系统发生学研究,发现N. neurosporum不仅有着与鸡冠孢芝属物种不相同的内孢壁纹饰(不具明显的横向脊突)且发育树结果显示其成一独立支系,N. neurosporum的分类地位再一次得到质疑。孙一翡等人结合以往学者研究以及根据N. neurosporum在新热带的地理分布,在2022年建立新的属Neoganoderma并将N. neurosporum移入该属中。
新热带灵芝属物种目前已知仅在新热带地区有分布。

描述Description

宏观形态特征:新热带灵芝属物种子实体一年生,具侧生柄或无柄,木栓质。菌盖单生,平展至凸镜形。菌盖表面红褐色至暗褐色,不具漆状光泽,光滑,具同心环状条纹和沟纹。菌肉苍白色至奶油色,软木栓质。菌孔面奶油色至浅肉桂褐色;菌孔圆形。
微观形态特征:新热带灵芝属物种菌丝二型;生殖菌丝无色,薄壁,具分枝、锁状联合;骨架菌丝无色至浅黄色,末端树状或不分叉。担孢子椭球形,略具平截,浅黄色,具厚的双层壁结构;孢子内壁具纵向的与担孢子等长的脊突。
讨论:担孢子略具平截、较浅的菌肉颜色,特殊的内孢壁纹饰等特征是区别其他属的主要依据。
模式物种:Neoganoderma neurosporum脉孢新热带灵芝
生境及地理分布:分布于巴拿马、哥斯达黎加、巴西等新热带地区。
经济价值:可能有潜在的药用价值。不少国家或地区视芝类为严重的森林木材病害菌,请遵守当地法律法规。

系统发育树位置图例

可拖动或缩放树

灵芝类(旧分类为灵芝科,现归入多孔菌科)系统发育树,示松芝属位置



代表物种


25:菌孔面; 26:菌盖表面。来源:Some tropical species of Ganoderma (Polyporaceae) with pale context
担孢子的扫描电镜(SEM)图结果。来源:Taxonomy and phylogeny of polypores with ganodermatoid basidiospores (Ganodermataceae)
脉孢新热带灵芝Neoganoderma neurosporum (J.S. Furtado) B.K. Cui & Y.F. Sun 2022
异名:
Ganoderma neurosporum J.S. Furtado 1967
Haddowia neurospora (J.S. Furtado) Teixeira 1992
子实体一年生,具侧生柄或无柄,木质。菌盖单生,平展至凸镜形。菌盖表面红褐色至暗褐色,不具漆状光泽,光滑,具同心环状沟纹;菌盖边缘钝。菌肉苍白色至奶油色,软木栓质。菌柄暗褐色,基部略呈空心。菌孔面奶油色至浅肉桂褐色;管壁厚,全缘;菌孔圆形;菌管浅灰褐色。
分布:分布于巴拿马、哥斯达黎加、巴西等新热带地区。中国目前未有分布
讨论:本种具灵芝状担子果和类鸡冠孢芝的担孢子,曾被置于灵芝属和鸡冠孢芝属中,但因其略具平截的担孢子以及拥有特殊的内孢壁纹饰(内孢壁纹饰具担孢子等长的纵向脊突但不具明显的横向脊突)与灵芝属物种和鸡冠孢芝属物种区分开来.
相似物种:与灵芝属物种和鸡冠孢芝属物种较为相似,但本种担孢子略具平截以及拥有特殊的内孢壁纹饰(内孢壁纹饰具担孢子等长的纵向脊突但不具明显的横向脊突)。
新组合描述:
Description: Basidiomata annual, laterally stipitate or sessile, corky. Pilei solitary, flat to convex, up to 15 cm diam and 3 cm thick. Pileal surface reddish brown to dark brown, dull, glabrous, with concentric furrows; margin obtuse, entire. Pore surface cream to pale cinnamon brown; pores circular, 4–5 per mm. Context pallid white or cream, soft corky, up to 2.5 cm thick. Tubes pale greyish brown, up to 1.5 cm long. Stipe dark brown, slightly swollen at base, up to 10 cm long and 1.5 cm diam. Hyphal system dimitic; generative hyphae with clamp connections, colourless, thin-walled, branched, 2–5 μm diam; skeletal hyphae terminal arboriform or unbranched, colourless to pale yellow, 3–7 μm diam. Pileipellis composed of irregularly to slight anticlinal skeletal hyphae and thin generative hyphae. Basidiospores ellipsoid, slightly truncated, pale yellow, IKI–, double-walled with thick walls, endospore wall with longitudinal ridges which equal in length to basidiospores, 16–20 × 11–15 μm. Notes: The brief description of Neoganoderma neurosporum was taken from Ryvarden (2004b) and Costa-Rezende et al. (2020b). According to the records, N. neurosporum is known from dead wood of deciduous trees in Neotropics. Neoganoderma neurosporum was placed in Haddowia by its similar endospore wall ornamentation, but no obvious traverse ridges were observed in N. neurosporum under SEM. Besides, N. neurosporum formed an independent lineage in the phylogenetic analyses (Fig. 1). More detailed description of N. neurosporum need to be made from future collections.


参考文献
  1. Species diversity, systematic revision and molecular phylogeny of Ganodermataceae (Polyporales, Basidiomycota) with an emphasis on Chinese collections, 2022. Sun Y-F, Xing J-H, He X-L, Wu D-M, Song C-G, Liu S, Vlasák J, Gates G, Gibertoni TB, Cui B-K. Studies in Mycology 101: 287–415    https://doi.org/10.3114/sim.2022.101.05
  2. Taxonomy and phylogeny of polypores with ganodermatoid basidiospores (Ganodermataceae), 2020. D. H. Costa-Rezende, G. L. Robledo, E. R. Drechsler-Santos, M. Glen, G. Gates, B. R. de Madrignac Bonzi et al.. Mycological Progress 19: 725–741    https://doi.org/10.1007/s11557-020-01589-1
  3. Some tropical species of Ganoderma (Polyporaceae) with pale context, 1967. Furtado JS. Persoonia 4:379–389    





新热带灵芝属Neoganoderma在我国有分布的物种 共计 0 个




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如需引用本文可参考下列格式:
蔡佳铭. 2023. 新热带灵芝属Neoganoderma. 菌物志Mycopedia. http://www.mycopedia.top/taxa.php?details=Neoganoderma
J.M. Cai. 2023. Genus Neoganoderma [Chinese]. Mycopedia. http://www.mycopedia.top/taxa.php?details=Neoganoderma