Detailed Information on Publication Record
2014
Spectral and intensity sensitivity of insect light-dependent magnetoreception.
KVÍČALOVÁ, Markéta, Pavel SLABÝ, Přemysl BARTOŠ, Radek NETUŠIL, How JING-LEE et. al.Basic information
Original name
Spectral and intensity sensitivity of insect light-dependent magnetoreception.
Name in Czech
Spectral and intensity sensitivity of insect light-dependent magnetoreception.
Authors
KVÍČALOVÁ, Markéta (203 Czech Republic, belonging to the institution), Pavel SLABÝ (203 Czech Republic, belonging to the institution), Přemysl BARTOŠ (203 Czech Republic, belonging to the institution), Radek NETUŠIL (203 Czech Republic, belonging to the institution), How JING-LEE (840 United States of America), Olga BAZALOVÁ (203 Czech Republic), David DOLEŽEL (203 Czech Republic, belonging to the institution) and Martin VÁCHA (203 Czech Republic, guarantor, belonging to the institution)
Edition
Photosensory Receptors & Signal Transduction, 2014
Other information
Language
English
Type of outcome
Konferenční abstrakt
Field of Study
30105 Physiology
Country of publisher
Czech Republic
Confidentiality degree
není předmětem státního či obchodního tajemství
RIV identification code
RIV/00216224:14310/14:00073776
Organization unit
Faculty of Science
Keywords in English
Magnetoreception insects behaviour cryptochrome
Tags
International impact
Změněno: 27/4/2015 15:38, Ing. Andrea Mikešková
Abstract
V originále
It has been shown on various animal taxa that magnetic compass behavior depends on presence and wavelength of light. Crucial role of short wavelength half of spectrum in magnetoreception is consistent with process of constitution of radical pairs consisting of cofactor flavin (FAD) and protein Cryptochrome (Cry). The investigation of light wavelength and intensity thresholds for magnetic sensing in vivo gives important data underpinning experimental identification of radical partners. To date, only fruitfly and birds wavelength limits were reported (<420 nm and <565 nm respectively) yet generally without mapping of color-specific intensity thresholds throughout the spectrum. Here, we tested spontaneous reaction to rotations of geomagnetic horizontal vector - magnetically induced restlessness of German cockroach (Blattella germanica ) under 365, 385, 405, 466 and 520 nm lights and defined respective light intensity thresholds. Two maxima of sensitivity have been found at 365 nm UV and 466 nm blue-green lights. However, even the highest intensities of green 520 nm light used (10e19 photons s-1m-2) did not support magnetosensitive behavioral reaction. Our data show spectral curve of behavioral reaction to geomagnetic field which seem to be well compatible with Cry light absorption spectrum. Since both Cry1 and Cry2 have been cloned from Blattella and molecular approaches are applicable (e.g. gene silencing) our assay may well be used to decipher open questions of Cry mediated light-dependent magnetoreception mechanism of animals.
Links
| EE2.4.31.0155, research and development project |
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| GC13-11908J, research and development project |
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