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Selective silicate-directed motility in diatoms

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Abstract
Diatoms are highly abundant unicellular algae that often dominate pelagic as well as benthic primary production in the oceans and inland waters. Being strictly dependent on silica to build their biomineralized cell walls, marine diatoms precipitate 240 x 10(12) mol Si per year, which makes them the major sink in the global Si cycle. Dissolved silicic acid (dSi) availability frequently limits diatom productivity and influences species composition of communities. We show that benthic diatoms selectively perceive and behaviourally react to gradients of dSi. Cell speed increases under dSi-limited conditions in a chemokinetic response and, if gradients of this resource are present, increased directionality of cell movement promotes chemotaxis. The ability to exploit local and short-lived dSi hotspots using a specific search behaviour likely contributes to micro-scale patch dynamics in biofilm communities. On a global scale this behaviour might affect sediment-water dSi fluxes and biogeochemical cycling.
Keywords
INORGANIC-PHOSPHATE, BENTHIC DIATOMS, CHEMOTAXIS, MICROALGAE, GERMANIUM, PATTERNS, BIOFILM, CYCLE, SEA

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MLA
Bondoc, Karen Grace V et al. “Selective Silicate-directed Motility in Diatoms.” NATURE COMMUNICATIONS 7 (2016): n. pag. Print.
APA
Bondoc, K. G. V., Heuschele, J., Gillard, J., Vyverman, W., & Pohnert, G. (2016). Selective silicate-directed motility in diatoms. NATURE COMMUNICATIONS, 7.
Chicago author-date
Bondoc, Karen Grace V, Jan Heuschele, Jeroen Gillard, Wim Vyverman, and Georg Pohnert. 2016. “Selective Silicate-directed Motility in Diatoms.” Nature Communications 7.
Chicago author-date (all authors)
Bondoc, Karen Grace V, Jan Heuschele, Jeroen Gillard, Wim Vyverman, and Georg Pohnert. 2016. “Selective Silicate-directed Motility in Diatoms.” Nature Communications 7.
Vancouver
1.
Bondoc KGV, Heuschele J, Gillard J, Vyverman W, Pohnert G. Selective silicate-directed motility in diatoms. NATURE COMMUNICATIONS. 2016;7.
IEEE
[1]
K. G. V. Bondoc, J. Heuschele, J. Gillard, W. Vyverman, and G. Pohnert, “Selective silicate-directed motility in diatoms,” NATURE COMMUNICATIONS, vol. 7, 2016.
@article{7205815,
  abstract     = {Diatoms are highly abundant unicellular algae that often dominate pelagic as well as benthic primary production in the oceans and inland waters. Being strictly dependent on silica to build their biomineralized cell walls, marine diatoms precipitate 240 x 10(12) mol Si per year, which makes them the major sink in the global Si cycle. Dissolved silicic acid (dSi) availability frequently limits diatom productivity and influences species composition of communities. We show that benthic diatoms selectively perceive and behaviourally react to gradients of dSi. Cell speed increases under dSi-limited conditions in a chemokinetic response and, if gradients of this resource are present, increased directionality of cell movement promotes chemotaxis. The ability to exploit local and short-lived dSi hotspots using a specific search behaviour likely contributes to micro-scale patch dynamics in biofilm communities. On a global scale this behaviour might affect sediment-water dSi fluxes and biogeochemical cycling.},
  articleno    = {10540},
  author       = {Bondoc, Karen Grace V and Heuschele, Jan and Gillard, Jeroen and Vyverman, Wim and Pohnert, Georg},
  issn         = {2041-1723},
  journal      = {NATURE COMMUNICATIONS},
  keywords     = {INORGANIC-PHOSPHATE,BENTHIC DIATOMS,CHEMOTAXIS,MICROALGAE,GERMANIUM,PATTERNS,BIOFILM,CYCLE,SEA},
  language     = {eng},
  pages        = {7},
  title        = {Selective silicate-directed motility in diatoms},
  url          = {http://dx.doi.org/10.1038/ncomms10540},
  volume       = {7},
  year         = {2016},
}

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