Taxonomic novelties in Magnolia-associated pleosporalean fungi in the Kunming Botanical Gardens (Yunnan, China)

Autor: Dhanushka N. Wanasinghe, Jianchu Xu, Nalin N. Wijayawardene, Peter E. Mortimer, Ratchadawan Cheewangkoon
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Peridium
Microfungi
Artificial Gene Amplification and Extension
Polymerase Chain Reaction
DNA barcoding
030308 mycology & parasitology
Database and Informatics Methods
Genus
Pleosporales
Database Searching
Phylogeny
Data Management
0303 health sciences
Multidisciplinary
biology
Eukaryota
Phylogenetic Analysis
Spores
Fungal
Phylogenetics
Type species
Medicine
Sequence Analysis
Research Article
Computer and Information Sciences
Multiple Alignment Calculation
Bioinformatics
Science
Magnolia denudata
Research and Analysis Methods
Fungal Proteins
03 medical and health sciences
Computational Techniques
Botany
DNA Barcoding
Taxonomic
Evolutionary Systematics
Molecular Biology Techniques
Sequence Similarity Searching
Molecular Biology
Taxonomy
030304 developmental biology
Evolutionary Biology
Fungi
Organisms
Biology and Life Sciences
biology.organism_classification
Split-Decomposition Method
Ascomycetes
Conidiomata
Magnolia
Sequence Alignment
Zdroj: PLoS ONE, Vol 15, Iss 7, p e0235855 (2020)
PLoS ONE
ISSN: 1932-6203
Popis: This paper represents the first article in a series on Yunnanese microfungi. We herein provide insights into Magnolia species associated with microfungi. All presented data are reported from the Kunming Botanical Gardens. Final conclusions were derived from the morphological examination of specimens coupled with phylogenetic sequence data to better integrate taxa into appropriate taxonomic ranks and infer their relationships. Shearia formosa, the type species of Shearia, lacks type material, and its phylogenetic position accordingly remains unresolved. A fresh collection of Shearia formosa, obtained from Magnolia denudata and M. soulangeana in China, therefore, designated a neotype for stabilizing the application of the species and/or genus name. Phylogenetic analyses of a combined DNA data matrix containing SSU, LSU, RPB2 and TEF loci of representative Pleosporales revealed that the genera Crassiperidium, Longiostiolum and Shearia are a well-defined monophylum. It is recognized as the family Longiostiolaceae and strongly supported by Bayesian and Maximum Likelihood methods. Its members are characterized by immersed to semi-immersed, globose to subglobose ascomata with a central, periphysate ostiole, a peridium composed of rectangular to polygonal cells, cylindrical to clavate asci, broadly fusiform, hyaline to pale brown ascospores, a coelomycetous asexual morph with pycnidial conidiomata, enteroblastic, annellidic, ampulliform, doliiform or cylindrical conidiogenous cells and cylindrical to fusiform, transverse and sometimes laterally distoseptate conidia without a sheath or with a basal lateral sheath. Nigrograna magnoliae sp. nov. is introduced from Magnolia denudata with both asexual and sexual morphs. We observed the asexual morph of Brunneofusispora sinensis from the culture and therefore amended the generic and species descriptions of Brunneofusispora.
Databáze: OpenAIRE
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