The insect circadian rhythm controlled by the vertebrate
Cryptochrome is sensitive to weak electromagnetic fields even
in permanent darkness.

a 2023

The insect circadian rhythm controlled by the vertebrate Cryptochrome is sensitive to weak electromagnetic fields even in permanent darkness.

BRIEDIKOVÁ, Kristína; Martin VÁCHA a Juraj MARKUŠ

Základní údaje

Originální název

The insect circadian rhythm controlled by the vertebrate Cryptochrome is sensitive to weak electromagnetic fields even in permanent darkness.

Název česky

Hmyzí cirkadiánní rytmus řízený obratlovčím kryptochromem je citlivý na slabá elektromagnetická pole i v trvalé tmě.

Autoři

BRIEDIKOVÁ, Kristína; Martin VÁCHA a Juraj MARKUŠ

Vydání

11th Royal Institute of Navigation Conference on Animal Navigation, 2023

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10602 Biology , Evolutionary biology

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/23:00133965

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova česky

cirkadiánní rytmus; elektromagnetická pole; Pyrrhocoris apterus; Periplaneta americana; kryptochrom

Klíčová slova anglicky

circadian rhythm; electromagnetic fields; Pyrrhocoris apterus; Periplaneta americana; Cryptochrome

Příznaky

Mezinárodní význam

Změněno: 11. 7. 2023 14:33, Mgr. Kristína Briediková

Anotace

V originále

Mechanisms controlling circadian rhythm and magnetic compass of animals remarkably use the same flavoprotein Cryptochrome (Cry). Whether Cry is a magnetic compass sensor is not yet definitively confirmed, but the fact that insect circadian rhythms have been shown to be sensitive to magnetic fields (MF) are in line with this hypothesis. We were interested to see whether a static weak MF, as well as a static weak radiofrequency (RF) field, affect clock rhythms in a species of insect that has Cry II involved in its clock controlling system, as do vertebrates. In the insect species Pyrrhocoris apterus (order Hemiptera) kept in constant conditions for 10 days, we found that both steady 120uT MF and broad-band <1nT/√Hz RF noise altered the period of the internal clock. Surprisingly, this sensitivity existed under conditions of permanent darkness or – more exactly - under IR light illumination (852nm) only. The result may suggest a non-canonical, light-independent, role for vertebrate Cry II in animal magnetoreception. In contrast to the data presented at the last RIN conference in 2019, we present for the first time a case of magnetic susceptibility of circadian clock system based on the same Cryptochrome type as vertebrates and show that the presence of short-wavelength light may not be a necessary condition for a magnetic susceptibility of a biological processes based on Cry II.

Návaznosti

QK1910286, projekt VaV

Název: Efektivní postupy a strategie pro zvládání včelích chorob a udržitelný chov včelstev

Investor: Ministerstvo zemědělství ČR, Efektivní postupy a strategie pro zvládání včelích chorob a udržitelný chov včelstev

Citovat

BRIEDIKOVÁ, Kristína; Martin VÁCHA a Juraj MARKUŠ. The insect circadian rhythm controlled by the vertebrate Cryptochrome is sensitive to weak electromagnetic fields even in permanent darkness. In 11th Royal Institute of Navigation Conference on Animal Navigation. 2023.

@proceedings{2278579,
   author = {Briediková, Kristína and Vácha, Martin and Markuš, Juraj},
   booktitle = {11th Royal Institute of Navigation Conference on Animal Navigation},
   keywords = {circadian rhythm; electromagnetic fields; Pyrrhocoris apterus; Periplaneta americana; Cryptochrome},
   language = {eng},
   title = {The insect circadian rhythm controlled by the vertebrate Cryptochrome is sensitive to weak electromagnetic fields even in permanent darkness.},
   year = {2023}
}

TY  - CONF
ID  - 2278579
AU  - Briediková, Kristína - Vácha, Martin - Markuš, Juraj
PY  - 2023
TI  - The insect circadian rhythm controlled by the vertebrate Cryptochrome is sensitive to weak electromagnetic fields even in permanent darkness.
KW  - circadian rhythm
KW  - electromagnetic fields
KW  - Pyrrhocoris apterus
KW  - Periplaneta americana
KW  - Cryptochrome
N2  - Mechanisms controlling circadian rhythm and magnetic compass of animals remarkably use the same flavoprotein Cryptochrome (Cry). Whether Cry is a magnetic compass sensor is not yet definitively confirmed, but the fact that insect circadian rhythms have been shown to be sensitive to magnetic fields (MF) are in line with this hypothesis. We were interested to see whether a static weak MF, as well as a static weak radiofrequency (RF) field, affect clock rhythms in a species of insect that has Cry II involved in its clock controlling system, as do vertebrates. In the insect species Pyrrhocoris apterus (order Hemiptera) kept in constant conditions for 10 days, we found that both steady 120uT MF and broad-band <1nT/√Hz RF noise altered the period of the internal clock. Surprisingly, this sensitivity existed under conditions of permanent darkness or – more exactly - under IR light illumination (852nm) only. The result may suggest a non-canonical, light-independent, role for vertebrate Cry II in animal magnetoreception. In contrast to the data presented at the last RIN conference in 2019, we present for the first time a case of magnetic susceptibility of circadian clock system based on the same Cryptochrome type as vertebrates and show that the presence of short-wavelength light may not be a necessary condition for a magnetic susceptibility of a biological processes based on Cry II.
ER  -

BRIEDIKOVÁ, Kristína; Martin VÁCHA a Juraj MARKUŠ. The insect circadian rhythm controlled by the vertebrate Cryptochrome is sensitive to weak electromagnetic fields even in permanent darkness. In \textit{11th Royal Institute of Navigation Conference on Animal Navigation}. 2023.

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