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

Wanasinghe, Dhanushka N.; Wijayawardene, Nalin N.; Xu, Jianchu; Cheewangkoon, Ratchadawan; Mortimer, Peter E.

doi:10.1371/journal.pone.0235855

Cited by 41 publications

(60 citation statements)

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“…This complex topography and climatic diversity are both significant contributors to local biodiversity richness [ 23 ]. Among publications documenting fungal encounters across Yunnan Province, ascomycetes are critically neglected when compared to the amount of research on basidiomycetes [ 24 ]. Regrettably, studies on microfungi in Honghe are virtually non-existent.…”

Section: Introductionmentioning

confidence: 99%

Insight into the Systematics of Microfungi Colonizing Dead Woody Twigs of Dodonaea viscosa in Honghe (China)

Wanasinghe

Mortimer

2021

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Members of Dodonaea are broadly distributed across subtropical and tropical areas of southwest and southern China. This host provides multiple substrates that can be richly colonized by numerous undescribed fungal species. There is a severe lack of microfungal studies on Dodonaea in China, and consequently, the diversity, phylogeny and taxonomy of these microorganisms are all largely unknown. This paper presents two new genera and four new species in three orders of Dothideomycetes gathered from dead twigs of Dodonaea viscosa in Honghe, China. All new collections were made within a selected area in Honghe from a single Dodonaea sp. This suggests high fungal diversity in the region and the existence of numerous species awaiting discovery. Multiple gene sequences (non-translated loci and protein-coding regions) were analysed with maximum likelihood and Bayesian analyses. Results from the phylogenetic analyses supported placing Haniomyces dodonaeae gen. et sp. in the Teratosphaeriaceae family. Analysis of Rhytidhysteron sequences resulted in Rhytidhysteron hongheense sp. nov., while analysed Lophiostomataceae sequences revealed Lophiomurispora hongheensis gen. et sp. nov. Finally, phylogeny based on a combined dataset of pyrenochaeta-like sequences demonstrates strong statistical support for placing Quixadomyces hongheensis sp. nov. in Parapyrenochaetaceae. Morphological and updated phylogenetic circumscriptions of the new discoveries are also discussed.

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Section: Introductionmentioning

confidence: 99%

Insight into the Systematics of Microfungi Colonizing Dead Woody Twigs of Dodonaea viscosa in Honghe (China)

Wanasinghe

Mortimer

2021

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“…Two species, B. sinensis and B. clematidis , have molecular data and are accepted in this genus (Species Fungorum 2020; (accessed on 13 January 2021)). Brunneofusispora sinensis was described from undetermined terrestrial wood near in a river [ 59 ] and Magnolia denudata [ 60 ] in China, while B. clematidis was observed in Clematis subumbellata by Phukhamsakda et al [ 61 ]. In this paper, one novel coelomycetous Brunneofusispora species from a freshwater habitat is introduced.…”

Section: Resultsmentioning

confidence: 99%

“…Notes: Based on morphology, coupled with multi-loci phylogenetic analyses, the novel taxon was placed in Brunneofusispora . Brunneofusispora hyalina is similar to B. sinensis in conidiogenesis and conidial shape but differs in the size of conidiomata (260–435 × 110–205 μm diameter versus 120–160 μm × 80–120 μm diameter) and conidiogenous cells (5–11 μm × 2–4 μm versus 6–7.5 μm × 2.5–3 μm) [ 60 ]. In the phylogenetic analysis, Brunneofusispora hyalina clustered as a sister taxon to Brunneofusispora sp.…”

Section: Resultsmentioning

confidence: 99%

“…Camposporium thailandicum is an addition to the known twelve Camposporium species recorded in freshwater habitats: C. antennatum [ 105 , 106 , 107 ], C. appendiculatum [ 27 ], C. cambrense [ 108 , 109 , 110 ], C. fusisporum [ 111 ], C. hyalinum [ 112 ], C. japonicum [ 108 , 110 ], C. marylandicum [ 113 , 114 , 115 ], C. multiseptatum [ 27 ], C. ontariense [ 108 ], C. pellucidum [ 27 , 107 , 108 , 110 , 114 , 115 , 116 ], C. quercicola [ 111 ], and C. septatum [ 27 ]. Brunneofusispora hyalina is the only known species of the genus thriving in freshwater habitats, while other species were collected on different plant hosts like Clematis subumbellata in Thailand ( B. clematidis ) [ 61 ] and Magnolia denudata , and an unknown host in China ( B. sinensis ) [ 59 , 60 ].…”

Section: Discussionmentioning

confidence: 99%

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Five Novel Freshwater Ascomycetes Indicate High Undiscovered Diversity in Lotic Habitats in Thailand

Calabon

Jones

Boonmee

et al. 2021

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An investigation of freshwater fungi in Thailand resulted in the collection of one new monotypic genus, Neoxylomyces, and a novel species each in Camposporium, Brunneofusispora, Rattania, Neoxylomyces, and Phaeoacremonium.Camposporium dulciaquae resembles C. septatum in conidial morphology and number of septa but differs in conidial sizes. Brunneofusispora hyalina is similar to B. sinensis in conidiogenesis and conidial shape but differs in the sizes of conidiomata and conidiogenous cells. Rattania aquatica is the second species in Rattania, while Phaeoacremonium thailandense is the third species recorded from freshwater habitats. A new genus, Neoxylomyces, typified by N. multiseptatus, is similar to Xylomyces giganteus, but differs in the number of septa, chlamydospore measurements, and absence of a mucilaginous coating around the chlamydospores. These novel taxa form an independent lineage distinct from other species based on multi-loci phylogenetic analyses. Descriptions, illustrations, and notes are provided for each taxon. These new freshwater ascomycetes add to the increasing number of fungi known from Thailand and it is now evident that there are numerous novel taxa awaiting to be described as new freshwater habitats are explored. An update of newly discovered taxa in the widely studied freshwater habitats of Thailand over the last five years is also provided.

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“…This has facilitated better understanding of species diversity and the systematics of woody-based basidomycetous groups, such as Polyporales. However, woody-based microfungi such as Dothideomycetes are relatively neglected compared to the level of research conducted on Basidiomycetes (Wanasinghe et al, 2020). In the last few years, there has been increasing attention on woody-based microfungal occurrences, and more studies are reporting on the microfungal diversity, especially in Dothideomycetes, of Yunnan Province (Bao et al, 2018;Huang et al, 2018;Luo et al, 2018;Wanasinghe et al, 2018aWanasinghe et al, , 2020Wanasinghe et al, , 2021Rathnayaka et al, 2019;Qiao et al, 2020;Thiyagaraja et al, 2020b;Yasanthika et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Morpho-Phylo Taxonomy of Novel Dothideomycetous Fungi Associated With Dead Woody Twigs in Yunnan Province, China

Mortimer

Jeewon

et al. 2021

Front. Microbiol.

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Within the field of mycology, macrofungi have been relatively well-studied when compared to microfungi. However, the diversity and distribution of microfungi inhabiting woody material have not received the same degree of research attention, especially in relatively unexplored regions, such as Yunnan Province, China. To help address this knowledge gap, we collected and examined fungal specimens from different plants at various locations across Yunnan Province. Our investigation led to the discovery of four species that are clearly distinct from extant ones. These taxonomic novelties were recognized based on morphological comparisons coupled with phylogenetic analyses of multiple gene sequences (non-translated loci and protein-coding regions). The monotypic genus Neoheleiosa gen. nov. (type: N. lincangensis) is introduced in Monoblastiaceae (Monoblastiales) for a woody-based saprobic ascomycete that possesses globose to subglobose or obpyriform ascomata with centric or eccentric, papillate ostioles, an ascomatal wall with thin-walled cells of textura globulosa, cylindric, pedicellate asci with an ocular chamber, and 1-septate, brown, guttulate, longitudinally striated, bicellular ascospores. Neoheleiosa has a close phylogenetic affinity to Heleiosa, nevertheless, it is morphologically dissimilar by its peridium cells and ornamented ascospores. Acrocalymma hongheense and A. yuxiense are described and illustrated as new species in Acrocalymmaceae. Acrocalymma hongheense is introduced with sexual and asexual (coelomycetous) features. The sexual morph is characterized by globose to subglobose, ostiolate ascomata, a peridium with textura angularis cells, cylindric-clavate asci with a furcate to truncate pedicel and an ocular chamber, hyaline, fusiform, 1-septate ascospores which are surrounded by a thick, distinct sheath, and the asexual morph is featured by pycnidial conidiomata, subcylindrical, hyaline, smooth, annelledic, conidiogenous cells, hyaline, guttulate, subcylindrical, aseptate conidia with mucoid ooze at the apex and with a rounded hilum at the base. Acrocalymma yuxiense is phylogenetically distinct from other extant species of Acrocalymma and differs from other taxa in Acrocalymma in having conidia with three vertical eusepta. Magnibotryascoma kunmingense sp. nov. is accommodated in Teichosporaceae based on its coelomycetous asexual morph which is characterized by pycnidial, globose to subglobose, papillate conidiomata, enteroblastic, annelledic, discrete, cylindrical to oblong, hyaline conidiogenous cells arising from the inner layer of pycnidium wall, subglobose, oval, guttulate, pale brown and unicelled conidia.

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

Cited by 41 publications

References 46 publications

Insight into the Systematics of Microfungi Colonizing Dead Woody Twigs of Dodonaea viscosa in Honghe (China)

Insight into the Systematics of Microfungi Colonizing Dead Woody Twigs of Dodonaea viscosa in Honghe (China)

Five Novel Freshwater Ascomycetes Indicate High Undiscovered Diversity in Lotic Habitats in Thailand

Morpho-Phylo Taxonomy of Novel Dothideomycetous Fungi Associated With Dead Woody Twigs in Yunnan Province, China

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