| Spectral sensitivity of single cones in rainbow trout (Oncorhynchus mykiss): a whole-cell voltage clamp study. | |
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MedLine Citation:
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PMID: 20655939 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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The UVS cone mechanism is known to light adapt at low intensities in comparison to other cones. We were interested in whether this property was related to higher sensitivity in UVS cones or to network adjustments in sensitivity. We investigated spectral sensitivity of 107 individual cone photoreceptors in rainbow trout (Oncorhynchus mykiss) using a whole-cell voltage clamp technique. Mean time-to-peak response was 339+/-90ms and flash sensitivity for a 100ms flash was 4.37x10(-3)+/-2.50x10(-3)pAphotons(-1)microm(2), with no significant differences between the UVS, SWS, MWS and LWS cone classes. The spectral sensitivity of the UVS, SWS and LWS cones conformed to the expression of SWS1, SWS2 and LWS opsin genes. The spectral sensitivity of MWS cones, however, showed clear evidence of co-expression of RH2a and RH2b opsin pigments. The fish used in this study bridged the ontogenetic stage where the MWS cones shift their expression from RH2b to RH2a. |
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Authors:
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Leslie G Anderson; Shai Sabbah; Craig W Hawryshyn |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-07-23 |
Journal Detail:
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Title: Vision research Volume: 50 ISSN: 1878-5646 ISO Abbreviation: Vision Res. Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-08-30 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0417402 Medline TA: Vision Res Country: England |
Other Details:
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Languages: eng Pagination: 2055-61 Citation Subset: IM |
Copyright Information:
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Copyright 2010 Elsevier Ltd. All rights reserved. |
Affiliation:
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Department of Biology, University of Victoria, P.O. Box 3020 Station CSC, Victoria, British Columbia, Canada V8W 3N5. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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