Diversity of the ITS-1 operon and photosynthetic traits of andean freshwater picocyanobacteria (Comunicazione a convegno)

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  • Diversity of the ITS-1 operon and photosynthetic traits of andean freshwater picocyanobacteria (Comunicazione a convegno) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Alternative label
  • Callieri C., Caravati E., Modenutti B (1), Corno G., Balseiro E. (1), Bertoni R., Michaud L. (2) (2009)
    Diversity of the ITS-1 operon and photosynthetic traits of andean freshwater picocyanobacteria
    in ASLO Aquatic Sciences Meeting, Nizza
    (literal)
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  • Callieri C., Caravati E., Modenutti B (1), Corno G., Balseiro E. (1), Bertoni R., Michaud L. (2) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Callieri C., Caravati E., Modenutti B, Corno G., Balseiro E., Bertoni R., Michaud L. 2009. Diversity of the ITS-1 operon and photosynthetic traits of andean freshwater picocyanobacteria. ASLO (Advancing the Science of Limnology and Oceanography) Aquatic Sciences Meeting, Nizza 25-30 gennaio 2009 (literal)
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  • ASLO (American Society of Limnology and Oceanography), Nizza 25-30 gennaio 2009 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • In ultraoligotrophic North Patagonian Andean lakes picocyanobacteria (Pcy) are the dominant picophytoplankters comprising 50% of the total primary production and 30% of autotrophic biomass, as average in the water column. Automated rRNA Intergenic Spacer Analysis (ARISA) was used to study the structure and the diversity of Pcy community in six of these lakes. We investigated the relationships among the Operational Taxonomic Units (OTUs) and the photosynthetic characteristics of Pcy assemblages. The six lakes clustered into two main groups mirroring their history after the Last Glacial Maximum. About 50% of significant ARISA fragments appeared to be site specific, others displayed cosmopolitan distribution. The relative DNA fluorescence of one OTU was significantly related to chlorophyll specific production. The variation of the photosynthetic traits of the two clusters characterized by different OTU diversity is consistent with the hypothesis that the ITS-1 sequence of Pcy define functionally differentiated groups. Clone libraries approach coupled with ITS-1 analyses was used to obtain phylogenetic information of ARISA fragments and an ITS-1 phylogenetic tree was inferred using marine and freshwater picocyanobacteria published sequences. (literal)
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  • (1) Laboratorio de Limnolog1a, INIBIOMA (UNC-CONICET), Quintral 1250, 8400 Bariloche, Argentina (2) Department of Animal Biology and Marine Ecology, University of Messina (literal)
Titolo
  • Diversity of the ITS-1 operon and photosynthetic traits of andean freshwater picocyanobacteria (literal)
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