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231222s2000 xx ||||| 00| ||eng c |
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|a pubmed24n0399.xml
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|a (DE-627)NLM119622491
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|a (NLM)12090268
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Sineshchekov, O
|e verfasserin
|4 aut
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|a Effects of light on gravitaxis and velocity in Chlamydomonas reinhardtii
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|c 2000
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 23.08.2002
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|a Date Revised 30.09.2020
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|a published: Print
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|a Citation Status MEDLINE
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|a The effects of light on gravitaxis and velocity in the bi-flagellated green alga Chlamydomonas reinhardtii were investigated using a real time automatic tracking system. Three distinct light effects on gravitaxis and velocity with parallel kinetics were found. Photosynthetically active continuous red light reversibly enhances the swimming velocity and increases or decreases the precision of gravitaxis, depending on its initial level. Blue light flashes induce fast transient increases in velocity immediately after the photophobic response, and transiently decrease or even reverse negative gravitaxis. The calcium dependence of this response, its fluence-response curve and its spectral characteristics strongly suggest the participation of chlamy-rhodopsin in this effect. The third response, a prolonged activation of velocity and gravitaxis, is also induced by blue light flashes, which can be observed even in calcium-free medium
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|a Comparative Study
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Potassium Cyanide
|2 NLM
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|a MQD255M2ZO
|2 NLM
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|a Calcium
|2 NLM
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|a SY7Q814VUP
|2 NLM
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|a Lebert, M
|e verfasserin
|4 aut
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|a Hader, D P
|e verfasserin
|4 aut
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 157(2000), 3 vom: 14. Sept., Seite 247-54
|w (DE-627)NLM098174622
|x 1618-1328
|7 nnns
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| 773 |
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|g volume:157
|g year:2000
|g number:3
|g day:14
|g month:09
|g pages:247-54
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|a AR
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|d 157
|j 2000
|e 3
|b 14
|c 09
|h 247-54
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