The Species Identity of the Widely Cultivated Ganoderma, ‘G. lucidum’ (Ling-zhi), in China

Xin-Cun Wang, Rui-Jiao Xi, Yi Li, Dong-Mei Wang and Yi-Jian Yao

PLOS ONE, 2012, vol. 7, issue 7, 1-12

Abstract: Ling-zhi, a widely cultivated fungus in China, has a long history in traditional Chinese medicine. Although the name ‘Ganoderma lucidum’, a species originally described from England, has been applied to the fungus, their identities are not the same. This study aims to clarify the identity of this medicinally and economically important fungus. Specimens of Ling-zhi from China (field collections and cultivated basidiomata of the Chinese ‘G. lucidum’), G. lucidum from UK and other related Ganoderma species, were examined both morphologically and molecularly. High variability of basidioma morphology was found in the cultivated specimens of the Chinese ‘G. lucidum’, while some microscopic characters were more or less consistent, i.e. short clavate cutis elements, Bovista-type ligative hyphae and strongly echinulate basidiospores. These characters were also found in the holotype of G. sichuanense, a species originally described from Sichuan, China, and in recent collections made in the type locality of the species, which matched the diagnostic characters in the prologue. For comparison, specimens of closely related species, G. lucidum, G. multipileum, G. resinaceum, G. tropicum and G. weberianum, were also examined. DNA sequences were obtained from field collections, cultivated basidiomata and living strains of the Chinese ‘G. lucidum’, specimens from the type locality of G. sichuanense, and specimens of the closely related species studied. Three-gene combined analyses (ITS+IGS+rpb2) were performed and the results indicated that the Chinese ‘G. lucidum’ shared almost identical sequences with G. sichuanense. Based on both morphological and molecular data, the identity of the Chinese ‘G. lucidum’ (Ling-zhi) is considered conspecific with G. sichuanense. Detailed morphological descriptions and illustrations are provided in addition to discussion of nomenclature implications.

Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0040857

DOI: 10.1371/journal.pone.0040857

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