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    Visual phototransduction components in cephalopod chromatophores suggest dermal photoreception

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    1596.full.pdf (4.559Mb)
    Links to Files
    http://jeb.biologists.org/content/218/10/1596.long
    Permanent Link
    https://doi.org/10.1242/jeb.117945
    http://hdl.handle.net/11603/13387
    Collections
    • UMBC Biological Sciences Department
    • UMBC Faculty Collection
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    Author/Creator
    Kingston, Alexandra C. N.
    Kuzirian, Alan M.
    Hanlon, Roger T.
    Cronin, Thomas W.
    Date
    2015-04-08
    Type of Work
    7 pages
    Text
    journal articles
    Citation of Original Publication
    Alexandra C. N. Kingston, et.al, Visual phototransduction components in cephalopod chromatophores suggest dermal photoreception, The Journal of Experimental Biology (2015) 218, 1596-1602 doi:10.1242/jeb.117945
    Rights
    This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
    non-commercial use only
    Subjects
    rhodopsin
    retinochrome
    extraocular photoreceptor
    skin
    Abstract
    Cephalopodmollusks are renowned for their colorful and dynamic body patterns, produced by an assemblage of skin components that interact with light.Thesemay include iridophores, leucophores, chromatophores and (in some species) photophores. Here, we present molecular evidence suggesting that cephalopod chromatophores – small dermal pigmentary organs that reflect various colors of light – are photosensitive. RT-PCR revealed the presence of transcripts encoding rhodopsin and retinochrome within the retinas and skin of the squid Doryteuthis pealeii, and the cuttlefish Sepia officinalis and Sepia latimanus. In D. pealeii, Gqα and squid TRP channel transcripts were present in theretina andinalldermal samples.Rhodopsin, retinochrome and Gqα transcripts were also found in RNA extracts from dissociated chromatophores isolated from D. pealeii dermal tissues. Immunohistochemical staining labeled rhodopsin, retinochrome and Gqα proteins in several chromatophore components, including pigment cell membranes, radial muscle fibers, and sheath cells. This is the first evidence that cephalopod dermal tissues, and specifically chromatophores, may possess the requisite combination ofmolecules required to respond to light.


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    Albin O. Kuhn Library & Gallery
    University of Maryland, Baltimore County
    1000 Hilltop Circle
    Baltimore, MD 21250
    www.umbc.edu/scholarworks

    Contact information:
    Email: scholarworks-group@umbc.edu
    Phone: 410-455-3021


    If you wish to submit a copyright complaint or withdrawal request, please email mdsoar-help@umd.edu.