Linked Life Data

19431753

Source:http://linkedlifedata.com/resource/pubmed/id/19431753

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2010-6-25
pubmed:abstractText
The kinetics of the photoreceptor potential of phototaxis in biflagellated green alga Haematococcus pluvialis in response to a 10-ns laser pulse of three wavelengths (465, 550, and 590 nm) were measured in single cells with 30 mus time resolution. The rise and the decay of photoinduced potential are both at least biphasic. The first component of the rise is very stable and has no measurable (<30 mus) time delay. The second component is triggered after a 120-400-mus lag period, depending on flash intensity. Its appearance is sensitive to the physiological state of the cell and the amplitude can be increased by phototactically ineffective red background illumination. The electrical generators for both components are localized in the same region of the cell membrane (on the stigma-bearing side) and these components have the same depolarizing sign. The results indicate that the photoreceptor potential in phototaxis comprises two components, which could be interpreted as light-induced charge movement within the photoreceptor molecules and changes in ion permeability of the cell membrane.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Jan
pubmed:issn
0006-3495
pubmed:author
pubmed:issnType
Print
pubmed:volume
57
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
33-9
pubmed:dateRevised
2010-9-27
pubmed:year
1990
pubmed:articleTitle
Two components of photoreceptor potential in phototaxis of the flagellated green alga Haematococcus pluvialis.
pubmed:affiliation
Biology Department, Moscow State University, Moscow 119899, Union of Soviet Socialist Republics.
pubmed:publicationType
Journal Article