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Evolution of parasitism in nematode-trapping fungi

Ahrén, Dag LU and Tunlid, Anders LU (2003) 40th Annual Meeting of the Society-of-Nematologists In Journal of Nematology 35(2). p.194-197
Abstract
We are studying the evolution of parasitism in a group of soil-living ascomycetes that can grow as saprophytes as well as parasites by forming special morphological structures called traps. Analyses of 18S ribosomal DNA sequences have shown that these fungi form a monophyletic and isolated clade among the ascomycetes. The phylogenetic patterns within this clade are concordant with the morphology of the traps and separate species having adhesive traps (nets, knobs, and branches) from those having constricting rings. This suggests that these nematode-trapping fungi have a common ancestor, and that the ability to capture nematodes has been an important trait for further speciation and diversification within the clade. To obtain information on... (More)
We are studying the evolution of parasitism in a group of soil-living ascomycetes that can grow as saprophytes as well as parasites by forming special morphological structures called traps. Analyses of 18S ribosomal DNA sequences have shown that these fungi form a monophyletic and isolated clade among the ascomycetes. The phylogenetic patterns within this clade are concordant with the morphology of the traps and separate species having adhesive traps (nets, knobs, and branches) from those having constricting rings. This suggests that these nematode-trapping fungi have a common ancestor, and that the ability to capture nematodes has been an important trait for further speciation and diversification within the clade. To obtain information on the genomic basis for this pattern, we recently started a large-scale sequencing project of the nematode-trapping fungus Monacrosporium haptotylum. This will allow the identification of genes uniquely expressed during the development of traps, and elucidate the molecular evolution Of Such genes within the nematode-trapping fungi clade. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
expressed sequence tags, functional genomics, phylogeny
in
Journal of Nematology
volume
35
issue
2
pages
194 - 197
publisher
Society of Nematologists
conference name
40th Annual Meeting of the Society-of-Nematologists
external identifiers
  • scopus:0042569141
ISSN
0022-300X
language
English
LU publication?
yes
id
6fe2c21c-c670-4828-9bd2-393109e53c80 (old id 135710)
alternative location
http://fulltext10.fcla.edu/DLData/SN/SN0022300X/0035_002/194.pdf
date added to LUP
2007-06-29 08:44:23
date last changed
2018-01-07 09:06:04
@inproceedings{6fe2c21c-c670-4828-9bd2-393109e53c80,
  abstract     = {We are studying the evolution of parasitism in a group of soil-living ascomycetes that can grow as saprophytes as well as parasites by forming special morphological structures called traps. Analyses of 18S ribosomal DNA sequences have shown that these fungi form a monophyletic and isolated clade among the ascomycetes. The phylogenetic patterns within this clade are concordant with the morphology of the traps and separate species having adhesive traps (nets, knobs, and branches) from those having constricting rings. This suggests that these nematode-trapping fungi have a common ancestor, and that the ability to capture nematodes has been an important trait for further speciation and diversification within the clade. To obtain information on the genomic basis for this pattern, we recently started a large-scale sequencing project of the nematode-trapping fungus Monacrosporium haptotylum. This will allow the identification of genes uniquely expressed during the development of traps, and elucidate the molecular evolution Of Such genes within the nematode-trapping fungi clade.},
  author       = {Ahrén, Dag and Tunlid, Anders},
  booktitle    = {Journal of Nematology},
  issn         = {0022-300X},
  keyword      = {expressed sequence tags,functional genomics,phylogeny},
  language     = {eng},
  number       = {2},
  pages        = {194--197},
  publisher    = {Society of Nematologists},
  title        = {Evolution of parasitism in nematode-trapping fungi},
  volume       = {35},
  year         = {2003},
}