期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 106, 期 24, 页码 9836-9841出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.0904571106
关键词
Euprymna; evolutionary tinkering; extraocular photoreceptor; visual transduction
资金
- National Science Foundation [IOS 0517007, 0715905, DEB 0643840]
- National Science and Engineering Research Council of Canada [RGPIN171213-04]
- Retinal Research Foundation
- National Institutes of Health [EY 008768]
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [0715905] Funding Source: National Science Foundation
Here we show that bioluminescent organs of the squid Euprymna scolopes possess the molecular, biochemical, and physiological capability for light detection. Transcriptome analyses revealed expression of genes encoding key visual transduction proteins in light-organ tissues, including the same isoform of opsin that occurs in the retina. Electroretinograms demonstrated that the organ responds physiologically to light, and immunocytochemistry experiments localized multiple proteins of visual transduction cascades to tissues housing light-producing bacterial symbionts. These data provide evidence that the light-organ tissues harboring the symbionts serve as extraocular photoreceptors, with the potential to perceive directly the bioluminescence produced by their bacterial partners.
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