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  Bacteria may induce the secretion of mucin-like proteins by the diatom Phaeodactylum tricornutum

Buhmann, M. T., Schulze, B., Foerderer, A., Schleheck, D., & Kroth, P. G. (2016). Bacteria may induce the secretion of mucin-like proteins by the diatom Phaeodactylum tricornutum. Journal of Phycology, 52(3), 463-474. doi:10.1111/jpy.12409.

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Genre: Journal Article
Alternative Title : Journal of Phycology

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 Creators:
Buhmann, Matthias T.1, Author
Schulze, Birgit1, Author
Foerderer, A.2, Author                 
Schleheck, David1, Author
Kroth, Peter G.1, Author
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1external, ou_persistent22              
2External Organizations, ou_persistent22              

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Free keywords: biofilm, biofouling, diatom, EPS, extracellular enzymes, interactions, mucins, proteomics, signaling
 Abstract: Benthic diatoms live in photoautotrophic/heterotrophic biofilm communities embedded in a matrix of secreted extracellular polymeric substances. Closely associated bacteria influence their growth, aggregation, and secretion of exopolymers. We have studied a diatom/bacteria model community, in which a marine Roseobacter strain is able to grow with secreted diatom exopolymers as a sole source of carbon. The strain influences the aggregation of Phaeodactylum tricornutum by inducing a morphotypic transition from planktonic, fusiform cells to benthic, oval cells. Analysis of the extracellular soluble proteome of P. tricornutum in the presence and absence of bacteria revealed constitutively expressed newly identified proteins with mucin-like domains that appear to be typical for extracellular diatom proteins. In contrast to mucins, the proline-, serine-, threonine-rich (PST) domains in these proteins were also found in combination with protease-, glucosidase- and leucine-rich repeat-domains. Bioinformatic functional predictions indicate that several of these newly identified diatom-specific proteins may be involved in algal defense, intercellular signaling, and aggregation.

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Language(s): eng - English
 Dates: 2016-03-192016-06
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1111/jpy.12409
 Degree: -

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Title: Journal of Phycology
Source Genre: Journal
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Publ. Info: Oxford : Blackwell Pub.
Pages: - Volume / Issue: 52 (3) Sequence Number: - Start / End Page: 463 - 474 Identifier: ISSN: 0022-3646
CoNE: https://pure.mpg.de/cone/journals/resource/954925417985