@article{Wielgoss2009plant-7822,
  year={2009},
  doi={10.1111/j.1574-6941.2009.00701.x},
  title={Host plant development, water level and water parameters shape Phragmites australis-associated oomycete communities and determine reed pathogen dynamics in a large lake},
  number={2},
  volume={69},
  journal={FEMS Microbiology Ecology},
  pages={255--265},
  author={Wielgoss, Anna Marina and Nechwatal, Jan and Bogs, Carolin and Mendgen, Kurt}
}

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    <dcterms:title>Host plant development, water level and water parameters shape Phragmites australis-associated oomycete communities and determine reed pathogen dynamics in a large lake</dcterms:title>
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    <dc:contributor>Nechwatal, Jan</dc:contributor>
    <dc:contributor>Wielgoss, Anna Marina</dc:contributor>
    <dcterms:abstract xml:lang="eng">In a 3-year-study, we analysed the population dynamics of the reed pathogen Pythium phragmitis and other reed-associated oomycetes colonizing fresh and dried reed leaves in the littoral zone of a large lake. Oomycete communities derived from internal transcribed spacer clone libraries were clearly differentiated according to substrate and seasonal influences. In fresh leaves, diverse communities consisting of P. phragmitis and other reed-associated pathogens were generally dominant. Pythium phragmitis populations peaked in spring with the emergence of young reed shoots, and in autumn after extreme flooding events. In summer it decreased with falling water levels, changing water chemistry and rising temperatures. Another Pythium species was also highly abundant in fresh leaves throughout the year and might represent a new, as-yet uncultured reed pathogen. In dried leaves, reed pathogens were rarely detected, whereas saprophytic species occurred abundantly during all seasons. Saprophyte communities were less diverse, less temperature sensitive and independent of reed development. In general, our results provide evidence for the occurrence of highly specialized sets of reedassociated oomycetes in a natural reed ecosystem. Quantitative analyses (clone abundances and quantitative real-time PCR) revealed that the reed pathogen P. phragmitis is particularly affected by changing water levels, water chemistry and the stage of reed development.</dcterms:abstract>
    <dc:creator>Mendgen, Kurt</dc:creator>
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    <dc:creator>Bogs, Carolin</dc:creator>
    <dc:creator>Wielgoss, Anna Marina</dc:creator>
    <dc:contributor>Mendgen, Kurt</dc:contributor>
    <dc:creator>Nechwatal, Jan</dc:creator>
    <dcterms:issued>2009</dcterms:issued>
    <dc:contributor>Bogs, Carolin</dc:contributor>
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    <dcterms:bibliographicCitation>First publ. in: FEMS Microbiology Ecology ; 69 (2009), 2. - S. 255-265</dcterms:bibliographicCitation>
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