Cited by 15Circadian rhythm and melatoninRetinal Development and DisordersReproductive biology and impacts on aquatic species

Moonlight affects mRNA abundance of arylalkylamine N‐acetyltransferase in the retina of a lunar‐synchronized spawner, the goldlined spinefoot

Kashiwagi, Tomomi, Park, Yong‐Ju, Park, Ji‐Gweon, Imamura, Satoshi, Takeuchi, Yuki, Hur, Sung‐Pyo, Takemura, Akihiro·2013·Journal of Experimental Zoology Part A Ecological Genetics and Physiology

Abstract

Melatonin synthesis in the pineal gland and retina shows a rhythmic fashion with high levels at night and is controlled by a rate-limiting enzyme, arylalkylamine N-acetyltransferase (AANAT). A previous study revealed that moonlight suppresses the plasma melatonin levels of the goldlined spinefoot (Siganus guttatus), which exhibits a lunar cycle in its reproductive activity and repeats gonadal development toward and spawning around the first quarter moon. Whether the retina of this species responds to moonlight is unknown. To clarify the photoperceptive ability of this species, we aimed to clone the full-length cDNA of Aanat1 (sgAanat1) from the retina and examine its transcriptional pattern under several daylight and moonlight regimes. The full-length sgAanat1 cDNA (1,038 bp) contained a reading frame encoding a protein of 225 amino acids, which was highly homologous to AANAT1 of other teleosts. Reverse transcription-polymerase chain reaction (PCR) analysis revealed that among the tissues tested, sgAanat1 fragments were expressed exclusively in the retina. Real-time quantitative PCR analysis revealed that sgAanat1 fluctuated with high abundance at night under light-dark cycle and at subjective night under constant darkness, but not under constant light. These results suggest that sgAanat1 is regulated by both the external light signal and internal clock system. The abundance of sgAanat1 in the retina was higher at the culmination time around new moon than full moon phase. Additionally, exposing fish to brightness around the full moon period suppressed sgAanat1 mRNA abundance. Thus, moonlight is perceived by fish and has an impact on melatonin fluctuation in the retina.

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Crossref · 10.1002/jez.1814

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  • Moonlight changes the abundance of aanat1 in the eye of the goldlined spinefoot S. guttatus.

    “For instance, moonlight changes the abundance of aanat1 (the precursor of the synthesis enzyme AANAT) in the eye of the goldlined spinefoot S. guttatus (39).”

    From An Overview of Monthly Rhythms and Clocks (2017) · cites this paper as [39]

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Authors
Kashiwagi, T., Park, Y., Park, J., Imamura, S., Takeuchi, Y., Hur, S., & Takemura, A.
Affiliations
  • University of the Ryukyus (JP)
  • Department of Chemistry Biology and Marine Science University of the Ryukyus Nishihara Okinawa Japan
Corresponding author
Takemura, Akihiro
Venue
Journal of Experimental Zoology Part A Ecological Genetics and Physiology
Publisher
Wiley
Published
2013-08-22
Volume
319
Issue
9
Pages
505-516
ISSN
  • 1932-5223 (ISSN-L)
  • 1932-5231
OpenAlex
W1519814333
Cited by
15
References
52
Citations by year
2023: 1 · 2022: 1 · 2021: 1 · 2020: 2 · 2019: 1 · 2018: 1 · 2017: 5 · 2015: 1 · 2014: 1 · 2013: 1
FWCI
0.54
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Experimental Zoology Part A Ecological Genetics and Physiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinal Development and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Reproductive biology and impacts on aquatic species
Keywords
arylalkylamine N-acetyltransferase, moonlight, retina, Siganus guttatus, melatonin synthesis, lunar cycle, spawning, light perception, circadian clock, light-dark cycle, mRNA levels, teleosts
MeSH terms
Animals, Circadian Rhythm, Light, Melatonin, Perciformes, Retina, RNA, Messenger, Moon, Photoperiod, Arylalkylamine N-Acetyltransferase

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