Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Position specificity in the genus Coreomyces (Laboulbeniomycetes, Ascomycota)
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology.ORCID iD: 0000-0002-5909-6815
Uppsala University, Music and Museums, Museum of Evolution.
Naturhistoriska riksmuseet, Stockholm, Sweden.
Uppsala University, Music and Museums, Museum of Evolution.ORCID iD: 0000-0003-3021-1821
2018 (English)In: Fungal Systematics and Evolution, ISSN 2589-3823, Vol. 1, no 1, p. 217-228Article in journal (Refereed) Published
Abstract [en]

To study position specificity in the insect-parasitic fungal genus Coreomyces (Laboulbeniaceae, Laboulbeniales), we sampled corixid hosts (Corixidae, Heteroptera) in southern Scandinavia. We detected Coreomyces thalli in five different positions on the hosts. Thalli from the various positions grouped in four distinct clusters in the resulting gene trees, distinctly so in the ITS and LSU of the nuclear ribosomal DNA, less so in the SSU of the nuclear ribosomal DNA and the mitochondrial ribosomal DNA. Thalli from the left side of abdomen grouped in a single cluster, and so did thalli from the ventral right side. Thalli in the mid-ventral position turned out to be a mix of three clades, while thalli growing dorsally grouped with thalli from the left and right abdominal clades. The mid-ventral and dorsal positions were found in male hosts only. The position on the left hemelytron was shared by members from two sister clades. Statistical analyses demonstrate a significant positive correlation between clade and position on the host, but also a weak correlation between host sex and clade membership. These results indicate that sex-of-host specificity may be a non-existent extreme in a continuum, where instead weak preferences for one host sex may turn out to be frequent.

Place, publisher, year, edition, pages
2018. Vol. 1, no 1, p. 217-228
Keywords [en]
CORIXIDAE, DNA, FUNGI, HOST-SPECIFICITY, INSECT, PHYLOGENY
National Category
Evolutionary Biology
Identifiers
URN: urn:nbn:se:uu:diva-357103DOI: 10.3114/fuse.2018.01.09OAI: oai:DiVA.org:uu-357103DiVA, id: diva2:1238054
Funder
Helge Ax:son Johnsons stiftelse Available from: 2018-08-11 Created: 2018-08-11 Last updated: 2018-08-16Bibliographically approved
In thesis
1. Contributions to the understanding of diversity and evolution in the genus Coreomyces
Open this publication in new window or tab >>Contributions to the understanding of diversity and evolution in the genus Coreomyces
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The Laboulbeniales is an order of enigmatic ascomycete fungi that are obligate microscopic parasites of arthropods, which are usually non-detrimental. They typically display a high degree of host specificity, and the genus Coreomyces, which is the recurring theme of this thesis, is no exception. Coreomyces is a small aquatic genus parasitising water boatmen (Corixidae). Members in this genus present something that is unique for Laboulbeniales, position specificity. This means that a parasite is restricted to a specific position on the host. This thesis aims at elucidating the patterns of host and position specificity present in the genus Coreomyces by the use of molecular markers. A second aim is to describe new taxa encountered during the course of the project. Finally we wanted to reveal what mating system is present in a member of the Laboulbeniales, something that has never been done before. Understanding the mode of sexual reproduction and to get insights into mating type organisation can give important clues to how the species patterns we observe may have evolved. To achieve these goals we first had to develop a robust and simple molecular methodology that made use of as little material as possible, preferably a single thallus. Our results showed that position specificity indeed exists in this genus, but that it is not as strict as previously presumed, all species we analysed occupied more than one position. Further we were able to show that thalli found in the same position on different hosts constitute the same species, and also that two sister species utilise the same position. We conclude that, in most cases, growth position is more important than host species or host sex in species delimitation. We confirmed the presence of four discrete taxa, two of which were described as new species, Coreomyces confusus H. Sundb. et al. and C. dextrorsus H. Sundb. et al. Finally we were able to show that C. macropus and C. confusus are likely to display a homothallic breeding system.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2018. p. 47
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 1703
Keywords
ascomycetes, Coreomyces, Corixidae. DNA, DNA extraction, Fungi, ge-nome, host specificity, Laboulbeniales, mating types, MAT-loci, meth-odology, NGS, parasite, position specificity, systematics, taxonomy
National Category
Biological Systematics Evolutionary Biology
Research subject
Biology with specialization in Systematics; Biology with specialization in Evolutionary Organismal Biology
Identifiers
urn:nbn:se:uu:diva-357110 (URN)978-91-513-0405-2 (ISBN)
Public defence
2018-10-02, Lindahlssalen, Gamla Zoofysiologen (Hus 5), Norbyvägen 14, Uppsala, 09:00 (English)
Opponent
Supervisors
Available from: 2018-09-11 Created: 2018-08-16 Last updated: 2018-10-02

Open Access in DiVA

fulltext(860 kB)52 downloads
File information
File name FULLTEXT01.pdfFile size 860 kBChecksum SHA-512
32ace8b859e4eed7b3eaaabd6319cfb4c584cb851c90bee97a3b72df955b8fe05dabec3e9cc59f23f670b40b3a51c8db97d5a39c7a219607c603b3d038daa060
Type fulltextMimetype application/pdf

Other links

Publisher's full texthttps://www.ingentaconnect.com/content/wfbi/fuse/2018/00000001/00000001/art00010

Search in DiVA

By author/editor
Sundberg, HenrikKruys, ÅsaEkman, Stefan
By organisation
Systematic BiologyMuseum of Evolution
Evolutionary Biology

Search outside of DiVA

GoogleGoogle Scholar
Total: 52 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 44 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf