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. 2019 Apr 15:51:1-14.
doi: 10.3897/mycokeys.51.32272. eCollection 2019.

The genus Castanediella

Chuan-Gen Lin  1   2 , Darbhe J Bhat  3   4 , Jian-Kui Liu  5 , Kevin D Hyde  2 , Yong Wang  1
Affiliations

The genus Castanediella

Chuan-Gen Lin et al. MycoKeys. .

Abstract

Two new species, Castanediellabrevis and C.monoseptata, are described, illustrated and compared with other Castanediella taxa. Evidence for the new species is provided by morphological comparison and sequence data analyses. Castanediellabrevis can be distinguished from other Castanediella species by the short hyaline conidiophores and fusiform, aseptate hyaline conidia, while C.monoseptata differs from other Castanediella species by its unbranched conidiophores and fusiform, curved, 0-1-sepatate, hyaline conidia. Phylogenetic analysis of combined ITS and LSU sequence data was carried out to determine the phylogenetic placement of the species. A synopsis of hitherto described Castanediella species is provided. In addition, Castanediella is also compared with morphologically similar-looking genera such as Idriella, Idriellopsis, Microdochium, Neoidriella, Paraidriella and Selenodriella.

Keywords: Castanediellaceae; Sordariomycetes; hyphomycetes; new taxa; phylogeny.

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Figures

Figure 1.
Figure 1.
Phylogenetic tree generated from MP analysis based on combined LSU and ITS sequence data for the genus Castanediella. Bootstrap support values for maximum parsimony (MP, first set) and maximum likelihood (ML, second set) greater than 50% are indicated above or below the nodes. Ex-type strains are in bold, the new isolates are in red. The tree is rooted with Subsessilaturbinata (MFLUCC 15-0831).
Figure 2.
Figure 2.
Castanediellabrevis (MFLU 18-1695, holotype) a host material b conidiophores on the host surface c–g conidiophores, conidiogenous cells with conidia h conidia. Scale bars: 10 μm (c–g), 5 μm (h).
Figure 3.
Figure 3.
Castanediellamonoseptata (MFLU 18-1696, holotype) a host material b conidiophores on the host surface c–f conidiophores, conidiogenous cells with conidia g–l conidia. Scale bars: 10 μm (c, d), 5 μm (e–l).
See this image and copyright information in PMC

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