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The Ganoderma weberianum-resinaceum lineage: multilocus phylogenetic analysis and morphology confirm G. mexicanum and G. parvulum in the Neotropics.
MycoKeys ( IF 3.3 ) Pub Date : 2019-11-14 , DOI: 10.3897/mycokeys.59.33182
Milay Cabarroi-Hernández 1, 2 , Alma Rosa Villalobos-Arámbula 1 , Mabel Gisela Torres-Torres 3 , Cony Decock 2 , Laura Guzmán-Dávalos 1
Affiliation  

Many species of Ganoderma exhibit a high phenotypic plasticity. Hence, particularly among them, the morphological species concept remains difficult to apply, resulting in a currently confused taxonomy; as a consequence, the geographical distribution range of many species also remains very uncertain. One of the areas with a strong uncertainty, as far as morphological species concept is concerned, is the Neotropics. It is common that names of species described from other regions, mainly from northern temperate areas, have been applied to Neotropical species. The aim of the present study was to determine which species might lay behind the G. weberianum complex in the Neotropics, using morphological studies and phylogenetic inferences based on both single (ITS) and multilocus (ITS, rpb2, and tef1-α) sequences. The results indicated that G. weberianum sensu Steyaert, which is the usually accepted concept for this taxon, was absent from the Neotropics. In this area, G. weberianum sensu Steyaert encompassed at least two phylogenetic species, which are tentatively, for the time being, identified as belonging to G. mexicanum and G. parvulum. These two species could be distinguished morphologically, notably by the ornamentation or its absence on their chlamydospores. The results also showed that additional species from the Neotropics might still exist, including, e.g., G. perzonatum, but their circumscription remains uncertain until now because of the paucity of material available. Furthermore, it was found that the current concept of G. resinaceum embraced a complex of species.

中文翻译:

灵芝web树脂-树脂谱系:多基因座系统发育分析和形态学证实了新热带地区的墨西哥麦角菌和小葡萄球菌。

灵芝的许多种表现出高表型可塑性。因此,特别是其中的形态物种概念仍然难以应用,导致目前的分类法混乱;结果,许多物种的地理分布范围仍然非常不确定。就形态物种概念而言,新热带主义是最不确定的领域之一。通常将其他地区(主要是北部温带地区)描述的物种名称应用于新热带物种。本研究的目的是使用形态学研究和基于单(ITS)和多基因座(ITS,rpb2和tef1-α)序列的系统发育推断,确定新热带地区哪些物种可能位于Web。G. weberianum复合物中。结果表明G。新热带地区没有这种分类单元通常被接受的weberianum sensu Steyaert概念。在该地区,G。weberianum sensu Steyaert包含至少两个系统发育物种,暂时将其暂时鉴定为属于墨西哥G. parvulum和G. parvulum。可以从形态上区分这两个物种,特别是通过在其衣原体孢子中的装饰或不存在来区分。结果还表明,新热带地区的其他物种可能仍然存在,例如,Perzonatum G.,但是由于可用材料的匮乏,其划界至今仍不确定。此外,发现树脂醋杆菌的当前概念包括多种物种。在该地区,G。weberianum sensu Steyaert包含至少两个系统发育种,暂时将其鉴定为属于墨西哥棉和小球藻。可以从形态上区分这两个物种,特别是通过在其衣原体孢子中的装饰或不存在来区分。结果还表明,新热带地区的其他物种可能仍然存在,例如,Perzonatum G.,但是由于可用材料的匮乏,其划界至今仍不确定。此外,发现树脂醋杆菌的当前概念包括多种物种。在该地区,G。weberianum sensu Steyaert包含至少两个系统发育种,暂时将其鉴定为属于墨西哥棉和小球藻。可以从形态上区分这两个物种,特别是通过在其衣原体孢子中的装饰或不存在来区分。结果还表明,新热带地区的其他物种可能仍然存在,例如,Perzonatum G.,但是由于可用材料的匮乏,其划界至今仍不确定。此外,发现树脂醋杆菌的当前概念包括多种物种。可以从形态上区分这两个物种,特别是通过在其衣原体孢子中的装饰或不存在来区分。结果还表明,新热带地区的其他物种可能仍然存在,例如,Perzonatum G.,但由于可用材料的匮乏,其划界至今仍不确定。此外,发现树脂树脂的当前概念涵盖了多种物种。可以通过形态学区分这两个物种,特别是通过在其衣原体孢子中的装饰或不存在来区分。结果还表明,新热带地区的其他物种可能仍然存在,例如,Perzonatum G.,但是由于可用材料的匮乏,其划界至今仍不确定。此外,发现树脂醋杆菌的当前概念包括多种物种。
更新日期:2019-11-01
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