Vertical distribution of Epibenthic freshwater Cyanobacterial Synechococcus spp. strains depends on their ability for photoprotection

Lohscheider, Jens; Strittmatter, Martina; Küpper, Hendrik; Adamska, Iwona

Vertical distribution of Epibenthic freshwater Cyanobacterial Synechococcus spp. strains depends on their ability for photoprotection

Dateien

Lohscheider_155211_flat.pdfGröße: 458.45 KBDownloads: 547

Datum

2011

Autor:innen

Lohscheider, Jens

Strittmatter, Martina

Küpper, Hendrik

Adamska, Iwona

Open Access-Veröffentlichung

Open Access Gold, Open Access Gold

Sammlungen

Biologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

PLoS ONE. 2011, 6(5), pp. e20134. ISSN 1932-6203. eISSN 1932-6203. Available under: doi: 10.1371/journal.pone.0020134

Zusammenfassung

Background: Epibenthic cyanobacteria often grow in environments where the fluctuation of light intensity and quality is extreme and frequent. Different strategies have been developed to cope with this problem depending on the distribution of cyanobacteria in the water column. Principal Findings: Here we provide an experimental proof that the light intensity plays an important role in the vertical distribution of seven, closely related, epibenthic Synechococcus spp. strains isolated from various water depths from the littoral zone of Lake Constance in Germany and cultivated under laboratory conditions. Pigment analysis revealed that the amount of chlorophyll a and total carotenoids decreased with the time of light stress exposure in three phycoerythrin-rich strains collected from 7.0 m water depth and remained low during the recovery phase. In contrast, a constant level of chlorophyll a and either constant or enhanced levels of carotenoids were assayed in phycocyanin-rich strains collected from 1.0 and 0.5 m water depths. Protein analysis revealed that while the amount of biliproteins remained constant in all strains during light stress and recovery, the amount of D1 protein from photosystem II reaction centre was strongly reduced under light stress conditions in strains from 7.0 m and 1.0 m water depth, but not in strains collected from 0.5 m depth. Conclusion: Based on these data we propose that light intensity, in addition to light quality, is an important selective force in the vertical distribution of Synechococcus spp. strains, depending on their genetically fixed mechanisms for photoprotection.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Zitieren

ISO 690

LOHSCHEIDER, Jens, Martina STRITTMATTER, Hendrik KÜPPER, Iwona ADAMSKA, 2011. Vertical distribution of Epibenthic freshwater Cyanobacterial Synechococcus spp. strains depends on their ability for photoprotection. In: PLoS ONE. 2011, 6(5), pp. e20134. ISSN 1932-6203. eISSN 1932-6203. Available under: doi: 10.1371/journal.pone.0020134

BibTex

@article{Lohscheider2011Verti-15521,
  year={2011},
  doi={10.1371/journal.pone.0020134},
  title={Vertical distribution of Epibenthic freshwater Cyanobacterial Synechococcus spp. strains depends on their ability for photoprotection},
  number={5},
  volume={6},
  issn={1932-6203},
  journal={PLoS ONE},
  author={Lohscheider, Jens and Strittmatter, Martina and Küpper, Hendrik and Adamska, Iwona},
  note={Article Number: e20134}
}

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Universitätsbibliographie

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