507
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Discovery of the teleomorph of the hyphomycete, Sterigmatobotrys macrocarpa, and epitypification of the genus to holomorphic status

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Sterigmatobotrys macrocarpa is a conspicuous, lignicolous, dematiaceous hyphomycete with macronematous, penicillate conidiophores with branches or metulae arising from the apex of the stipe, terminating with cylindrical, elongated conidiogenous cells producing conidia in a holoblastic manner. The discovery of its teleomorph is documented here based on perithecial ascomata associated with fertile conidiophores of S. macrocarpa on a specimen collected in the Czech Republic; an identical anamorph developed from ascospores isolated in axenic culture. The teleomorph is morphologically similar to species of the genera Carpoligna and Chaetosphaeria, especially in its nonstromatic perithecia, hyaline, cylindrical to fusiform ascospores, unitunicate asci with a distinct apical annulus, and tapering paraphyses. Identical perithecia were later observed on a herbarium specimen of S. macrocarpa originating in New Zealand. Sterigmatobotrys includes two species, S. macrocarpa, a taxonomic synonym of the type species, S. elata, and S. uniseptata . Because no teleomorph was described in the protologue of Sterigmatobotrys, we apply Article 59.7 of the International Code of Botanical Nomenclature. We epitypify (teleotypify) both Sterigmatobotrys elata and S. macrocarpa to give the genus holomorphic status, and the name S. macrocarpa is adopted for the holomorph. To evaluate the ordinal and familial affinities of Sterigmatobotrys and its relationships with the morphologically similar genera Carpoligna and Chaetosphaeria, phylogenetic relationships were inferred based on aligned sequences of the large subunit nuclear ribosomal DNA (ncLSU rDNA).

          Related collections

          Most cited references9

          • Record: found
          • Abstract: found
          • Article: not found

          MRBAYES: Bayesian inference of phylogenetic trees.

          The program MRBAYES performs Bayesian inference of phylogeny using a variant of Markov chain Monte Carlo. MRBAYES, including the source code, documentation, sample data files, and an executable, is available at http://brahms.biology.rochester.edu/software.html.
            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            A compilation of large subunit (23S and 23S-like) ribosomal RNA structures: 1993.

              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Phylogenetic relationships and convergence of helicosporous fungi inferred from ribosomal DNA sequences.

              Helicosporous fungi form elegant, coiled, and multicellular mitotic spores (conidia). In this paper, we investigate the phylogenetic relationships among helicosporous fungi in the asexual genera Helicoma, Helicomyces, Helicosporium, Helicodendron, Helicoon, and in the sexual genus Tubeufia (Tubeufiaceae, Dothideomycetes, and Ascomycota). We generated ribosomal small subunit and partial large subunit sequences from 39 fungal cultures. These and related sequences from GenBank were analyzed using parsimony, likelihood, and Bayesian analysis. Results showed that helicosporous species arose convergently from six lineages of fungi in the Ascomycota. The Tubeufiaceae s. str. formed a strongly supported monophyletic lineage comprising most species from Helicoma, Helicomyces, and Helicosporium. However, within the Tubeufiaceae, none of the asexual genera were monophyletic. Traditional generic characters, such as whether conidiophores were conspicuous or reduced, the thickness of the conidial filament, and whether or not conidia were hygroscopic, were more useful for species delimitation than for predicting higher level relationships. In spite of their distinctive, barrel-shaped spores, Helicoon species were polyphyletic and had evolved in different ascomycete orders. Helicodendron appeared to be polyphyletic although most representatives occurred within Leotiomycetes. We speculate that some of the convergent spore forms may represent adaptation to dispersal in aquatic environments.
                Bookmark

                Author and article information

                Journal
                Stud Mycol
                simycol
                Studies in Mycology
                CBS Fungal Biodiversity Centre
                0166-0616
                1872-9797
                2011
                : 68
                : Phylogenetic revision of taxonomic concepts in the Hypocreales and other Ascomycota - A tribute to Gary J. Samuels -
                : 193-202
                Affiliations
                [1 ] Department of Taxonomy, Institute of Botany of the Academy of Sciences, CZ –252 43, Průhonice, Czech Republic
                [2 ] Biodiversity (Mycology and Botany), Agriculture and Agri-Food Canada, Ottawa, Ontario, K1A 0C6, Canada
                Author notes
                [* ] Correspondence: Martina Réblová, martina.reblova@ 123456ibot.cas.cz
                Article
                0193
                10.3114/sim.2011.68.08
                3065990
                21523194
                dcb8b393-4bf3-4b2e-93d1-651b668048c0
                Copyright © Copyright 2011 CBS-KNAW Fungal Biodiversity Centre

                You are free to share - to copy, distribute and transmit the work, under the following conditions:

                Attribution:  You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).

                Non-commercial:  You may not use this work for commercial purposes.

                No derivative works:  You may not alter, transform, or build upon this work.

                For any reuse or distribution, you must make clear to others the license terms of this work, which can be found at http://creativecommons.org/licenses/by-nc-nd/3.0/legalcode. Any of the above conditions can be waived if you get permission from the copyright holder. Nothing in this license impairs or restricts the author's moral rights.

                History
                Categories
                Articles

                Plant science & Botany
                anamorph-teleomorph connection,carpoligna,nclsu rdna,phylogeny,pleurothecium,teleotypification

                Comments

                Comment on this article