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Silicon metabolism in diatoms

ABSTRACT: We investigated the effects of extracellular silicic acid on the whole Phaeodactylum triconutum transcriptome. In this work, global transcription analyses were combined with comparative studies of other elements, and detailed analyses of the silicon transporters. Our results provide insight on Si-sensing genes and further extend current models for Si uptake. Keywords: Comparative transcriptome analyses from Phaeodactylum triconutum fusiform cells acclimated in a Si-free or silicic acid medium. Three biological samples in dye swap

ORGANISM(S): Phaeodactylum tricornutum

SUBMITTER: Laurent Jourdren

PROVIDER: E-GEOD-12015 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Genome-wide transcriptome analyses of silicon metabolism in Phaeodactylum tricornutum reveal the multilevel regulation of silicic acid transporters.

Sapriel Guillaume G Quinet Michelle M Heijde Marc M Jourdren Laurent L Tanty Véronique V Luo Guangzuo G Le Crom Stéphane S Lopez Pascal Jean PJ

PloS one 20091014 10

<h4>Background</h4>Diatoms are largely responsible for production of biogenic silica in the global ocean. However, in surface seawater, Si(OH)(4) can be a major limiting factor for diatom productivity. Analyzing at the global scale the genes networks involved in Si transport and metabolism is critical in order to elucidate Si biomineralization, and to understand diatoms contribution to biogeochemical cycles.<h4>Methodology/principal findings</h4>Using whole genome expression analyses we evaluate ...[more]

PMID: 19829693

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