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      First occurrence of Backusella gigacellularis (Mucorales, Mucoromycota) in a fragment of an Upland Forest within the semi-arid region of northeastern Brazil

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          Abstract

          Abstract In a survey mucoralean fungi in the Brejo da Serra do Benedito, a fragment of Upland Forest in the semi-arid region of Pernambuco, Brazil, a specimen of Backusella gigacellularis was isolated. So far, B. gigacellularis (holotype) had only been isolated from soil in the Cerrado domain, in São Paulo state, southeastern Brazil. This is the second report of B. gigacellularis worldwide, and the first record to northeastern Brazil. A detailed description, as well as the illustration of the specimen, are presented.

          Translated abstract

          Resumo Em um levantamento de espécies de fungos Mucorales no Brejo da Serra do Benedito, um Brejo de altitude do semi-árido pernambucano, Brasil, um espécime de Backusella gigacellularis foi isolado. Até o momento, B. gigacellularis (holótipo) só havia sido isolada de solo no Domínio Cerrado, no estado de São Paulo, sudeste do Brasil. Este é segundo registro mundial de B. gigacellularis e o primeiro para o nordeste do Brasil, especificamente em um a área de Brejo de altitude. Nesse trabalho, são apresentadas uma descrição detalhada e ilustração do espécime isolado.

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          Fungal diversity notes 367–490: taxonomic and phylogenetic contributions to fungal taxa

          Samantha Karunarathna, Sinang Hongsanan, Rajesh Jeewon … (2016)
          Article 0 comments Cited 108 times – based on 0 reviews     Review now
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            DNA barcoding in Mucorales: an inventory of biodiversity

            G. Walther, J. Pawłowska, A. Alastruey-Izquierdo … (2013)
            The order Mucorales comprises predominantly fast-growing saprotrophic fungi, some of which are used for the fermentation of foodstuffs but it also includes species known to cause infections in patients with severe immune or metabolic impairments. To inventory biodiversity in Mucorales ITS barcodes of 668 strains in 203 taxa were generated covering more than two thirds of the recognised species. Using the ITS sequences, Molecular Operational Taxonomic Units were defined by a similarity threshold of 99 %. An LSU sequence was generated for each unit as well. Analysis of the LSU sequences revealed that conventional phenotypic classifications of the Mucoraceae are highly artificial. The LSU- and ITS-based trees suggest that characters, such as rhizoids and sporangiola, traditionally used in mucoralean taxonomy are plesiomorphic traits. The ITS region turned out to be an appropriate barcoding marker in Mucorales. It could be sequenced directly in 82 % of the strains and its variability was sufficient to resolve most of the morphospecies. Molecular identification turned out to be problematic only for the species complexes of Mucor circinelloides, M. flavus, M. piriformis and Zygorhynchus moelleri. As many as 12 possibly undescribed species were detected. Intraspecific variability differed widely among mucorealean species ranging from 0 % in Backusella circina to 13.3 % in Cunninghamella echinulata. A high proportion of clinical strains was included for molecular identification. Clinical isolates of Cunninghamella elegans were identified molecularly for the first time. As a result of the phylogenetic analyses several taxonomic and nomenclatural changes became necessary. The genus Backusella was emended to include all species with transitorily recurved sporangiophores. Since this matched molecular data all Mucor species possessing this character were transferred to Backusella. The genus Zygorhynchus was shown to be polyphyletic based on ITS and LSU data. Consequently, Zygorhynchus was abandoned and all species were reclassified in Mucor. Our phylogenetic analyses showed, furthermore, that all non-thermophilic Rhizomucor species belong to Mucor. Accordingly, Rhizomucor endophyticus was transferred to Mucor and Rhizomucor chlamydosporus was synonymised with Mucor indicus. Lecto-, epi- or neotypes were designated for several taxa.
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              Fungal diversity notes 491–602: taxonomic and phylogenetic contributions to fungal taxa

              Saowaluck Tibpromma, Kevin D. Hyde, Rajesh Jeewon … (2017)
              Article 0 comments Cited 58 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (publisher-id): rod
                Title: Rodriguésia
                Abbreviated Title: Rodriguésia
                Publisher: Instituto de Pesquisas Jardim Botânico do Rio de Janeiro (Rio de Janeiro, RJ, Brazil )
                ISSN (Print): 0370-6583
                ISSN (Electronic): 2175-7860
                Publication date (Print and electronic): 2021
                Volume: 72
                Electronic Location Identifier: e01262019
                Affiliations
                [2] Recife PE orgnameAgronomic Institute of Pernambuco Brazil
                [1] Recife PE orgnameFederal University of Pernambuco orgdiv1Department of Mycology orgdiv2Postgraduate Program in Biology of Fungi Brazil
                Article
                Publisher ID: S2175-78602021000100600 Publisher ID: S2175-7860(21)07200000600
                DOI: 10.1590/2175-7860202172005
                SO-VID: 10febae8-23d7-4e1c-af30-8f21c3b739c4
                License:

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                Date accepted : 27 September 2019
                Date received : 12 July 2019
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 15, Pages: 0
                Product

                SciELO Brazil

                Categories
                Subject: Short Communications

                Keywords: solo,zygosporic fungi,Mucoromycota,taxonomy,taxonomia,soil,Fungos zigospóricos,Mucoromyceta
                Data availability:
                Keywords: solo, zygosporic fungi, Mucoromycota, taxonomy, taxonomia, soil, Fungos zigospóricos, Mucoromyceta

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