Phototaxis beyond turning: persistent accumulation and response acclimation of the microalga Chlamydomonas reinhardtii

Abstract Phototaxis is an important reaction to light displayed by a wide range of motile microorganisms. Flagellated eukaryotic microalgae in particular, like the model organism Chlamydomonas reinhardtii, steer either towards or away from light by a rapid and precisely timed modulation of their fla...

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Autores principales:	Jorge Arrieta, Ana Barreira, Maurizio Chioccioli, Marco Polin, Idan Tuval
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9ba0f2396f204d59be7b51aa17498d35
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spelling	oai:doaj.org-article:9ba0f2396f204d59be7b51aa17498d352021-12-02T11:52:33ZPhototaxis beyond turning: persistent accumulation and response acclimation of the microalga Chlamydomonas reinhardtii10.1038/s41598-017-03618-82045-2322https://doaj.org/article/9ba0f2396f204d59be7b51aa17498d352017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03618-8https://doaj.org/toc/2045-2322Abstract Phototaxis is an important reaction to light displayed by a wide range of motile microorganisms. Flagellated eukaryotic microalgae in particular, like the model organism Chlamydomonas reinhardtii, steer either towards or away from light by a rapid and precisely timed modulation of their flagellar activity. Cell steering, however, is only the beginning of a much longer process which ultimately allows cells to determine their light exposure history. This process is not well understood. Here we present a first quantitative study of the long timescale phototactic motility of Chlamydomonas at both single cell and population levels. Our results reveal that the phototactic strategy adopted by these microorganisms leads to an efficient exposure to light, and that the phototactic response is modulated over typical timescales of tens of seconds. The adaptation dynamics for phototaxis and chlorophyll fluorescence show a striking quantitative agreement, suggesting that photosynthesis controls quantitatively how cells navigate a light field.Jorge ArrietaAna BarreiraMaurizio ChioccioliMarco PolinIdan TuvalNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jorge Arrieta Ana Barreira Maurizio Chioccioli Marco Polin Idan Tuval Phototaxis beyond turning: persistent accumulation and response acclimation of the microalga Chlamydomonas reinhardtii
description	Abstract Phototaxis is an important reaction to light displayed by a wide range of motile microorganisms. Flagellated eukaryotic microalgae in particular, like the model organism Chlamydomonas reinhardtii, steer either towards or away from light by a rapid and precisely timed modulation of their flagellar activity. Cell steering, however, is only the beginning of a much longer process which ultimately allows cells to determine their light exposure history. This process is not well understood. Here we present a first quantitative study of the long timescale phototactic motility of Chlamydomonas at both single cell and population levels. Our results reveal that the phototactic strategy adopted by these microorganisms leads to an efficient exposure to light, and that the phototactic response is modulated over typical timescales of tens of seconds. The adaptation dynamics for phototaxis and chlorophyll fluorescence show a striking quantitative agreement, suggesting that photosynthesis controls quantitatively how cells navigate a light field.
format	article
author	Jorge Arrieta Ana Barreira Maurizio Chioccioli Marco Polin Idan Tuval
author_facet	Jorge Arrieta Ana Barreira Maurizio Chioccioli Marco Polin Idan Tuval
author_sort	Jorge Arrieta
title	Phototaxis beyond turning: persistent accumulation and response acclimation of the microalga Chlamydomonas reinhardtii
title_short	Phototaxis beyond turning: persistent accumulation and response acclimation of the microalga Chlamydomonas reinhardtii
title_full	Phototaxis beyond turning: persistent accumulation and response acclimation of the microalga Chlamydomonas reinhardtii
title_fullStr	Phototaxis beyond turning: persistent accumulation and response acclimation of the microalga Chlamydomonas reinhardtii
title_full_unstemmed	Phototaxis beyond turning: persistent accumulation and response acclimation of the microalga Chlamydomonas reinhardtii
title_sort	phototaxis beyond turning: persistent accumulation and response acclimation of the microalga chlamydomonas reinhardtii
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/9ba0f2396f204d59be7b51aa17498d35
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Phototaxis beyond turning: persistent accumulation and response acclimation of the microalga Chlamydomonas reinhardtii

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