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
Characterization and comparison of prokaryotic epiphytes associated with three east African seagrasses
Stockholm University, Faculty of Science, Department of Botany.
Stockholm University, Faculty of Science, Department of Botany.
Stockholm University, Faculty of Science, Department of Botany.
Stockholm University, Faculty of Science, Department of Botany.
2007 (English)In: Journal of Phycology, ISSN 0022-3646, Vol. 43, no 4, 768-779 p.Article in journal (Refereed) Published
Abstract [en]

Prokaryotic epiphytes on leaves of three seagrass species, Thalassodendron ciliatum, Thalassia hemprichii, and Cymodocea rotundata, from two Kenyan coastal sites, Nyali (a high-nutrient site) and Vipingo (a low-nutrient site), were characterized genetically and morphol. Denaturing gradient gel electrophoresis (DGGE) and clone libraries of PCR-amplified 16S rRNA gene fragments were used to study prokaryotes assocd. with these seagrasses. In general, the epiphytic coverage was greater in the high-nutrient site, while the microbial diversity was linked to seagrass species rather than the study sites. Cytophaga-Flavobacteria-Bacteroides (CFB) were assocd. with T. ciliatum and T. hemprichii mainly in the nutrient-poor site, while a-, b-, and g-proteobacteria were assocd. with all three species at the two study sites. Some bacteria phylotypes were closely related to sequences of microorganisms previously recovered from wastewaters or other contaminated sources, indicating the influx of land-based wastes into these coastal lagoon ecosystems. The abundance of potential nitrogen (N2)-fixing cyanobacteria on C. rotundata, particularly in the low-nutrient site, suggested that this assocn. may have been acquired to meet N demands. Unicellular cyanobacteria were dominant and assocd. with C. rotundata and T. hemprichii (with those on T. hemprichii being closely related to cyanobacterial symbiotic species), while T. ciliatum was almost devoid of cyanobacterial assocns. at the same site (Nyali), which suggests specificity in the cyanobacteria-seagrass assocns. The abundance of prokaryotic epiphytes was considered to be linked to water depth and tidal exposure.

Place, publisher, year, edition, pages
2007. Vol. 43, no 4, 768-779 p.
Identifiers
URN: urn:nbn:se:su:diva-11005ISI: 000248544800015OAI: oai:DiVA.org:su-11005DiVA: diva2:177524
Available from: 2008-01-09 Created: 2008-01-09 Last updated: 2011-01-11Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Björk, MatsBergman, BirgittaDiez, Beatriz
By organisation
Department of Botany

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 36 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