气候变化领域集成服务门户(CCPortal): Diel transcriptional oscillations of light-sensitive regulatory elements in open-ocean eukaryotic plankton communities

CCPortal

DOI	10.1073/pnas.2011038118
	Diel transcriptional oscillations of light-sensitive regulatory elements in open-ocean eukaryotic plankton communities
	Coesel S.N.; Durham B.P.; Groussman R.D.; Hu S.K.; Caron D.A.; Morales R.L.; Ribalet F.; Armbrust E.V.
发表日期	2021
ISSN	00278424
卷号	118 期号:6
英文摘要	The 24-h cycle of light and darkness governs daily rhythms of complex behaviors across all domains of life. Intracellular photoreceptors sense specific wavelengths of light that can reset the internal circadian clock and/or elicit distinct phenotypic responses. In the surface ocean, microbial communities additionally modulate nonrhythmic changes in light quality and quantity as they are mixed to different depths. Here, we show that eukaryotic plankton in the North Pacific Subtropical Gyre transcribe genes encoding light-sensitive proteins that may serve as light-activated transcription factors, elicit light-driven electrical/chemical cascades, or initiate secondary messenger-signaling cascades. Overall, the protistan community relies on blue light-sensitive photoreceptors of the cryptochrome/ photolyase family, and proteins containing the Light-Oxygen-Voltage (LOV) domain. The greatest diversification occurred within Haptophyta and photosynthetic stramenopiles where the LOV domain was combined with different DNA-binding domains and secondary signal-transduction motifs. Flagellated protists utilize green-light sensory rhodopsins and blue-light helmchromes, potentially underlying phototactic/photophobic and other behaviors toward specific wavelengths of light. Photoreceptors such as phytochromes appear to play minor roles in the North Pacific Subtropical Gyre. Transcript abundance of environmental light-sensitive protein-encoding genes that display diel patterns are found to primarily peak at dawn. The exceptions are the LOV-domain transcription factors with peaks in transcript abundances at different times and putative phototaxis photoreceptors transcribed throughout the day. Together, these data illustrate the diversity of light-sensitive proteins that may allow disparate groups of protists to respond to light and potentially synchronize patterns of growth, division, and mortality within the dynamic ocean environment. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Diel cycles; Metatranscriptomics; Microbial eukaryotes; Oligotrophic gyre; Photoreceptors
语种	英语
scopus关键词	cryptochrome; deoxyribodipyrimidine photolyase; phytochrome; sensory rhodopsin; transcription factor; Article; DNA binding; environmental exposure; enzyme activation; genetic code; genetic transcription; growth curve; Haptophyta; light exposure; mortality; nonhuman; ocean environment; oscillation; phototaxis; plankton; priority journal; protistan community; regulatory sequence; signal transduction; stramenopile
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180716
作者单位	School of Oceanography, University of Washington, Seattle, WA 98195, United States; Department of Biology, Genetics Institute, University of Florida, Gainesville, FL 32610, United States; Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, United States; Department of Biological Sciences, University of Southern California, Los Angeles, CA 90089-0371, United States
推荐引用方式 GB/T 7714	Coesel S.N.,Durham B.P.,Groussman R.D.,et al. Diel transcriptional oscillations of light-sensitive regulatory elements in open-ocean eukaryotic plankton communities[J],2021,118(6).
APA	Coesel S.N..,Durham B.P..,Groussman R.D..,Hu S.K..,Caron D.A..,...&Armbrust E.V..(2021).Diel transcriptional oscillations of light-sensitive regulatory elements in open-ocean eukaryotic plankton communities.Proceedings of the National Academy of Sciences of the United States of America,118(6).
MLA	Coesel S.N.,et al."Diel transcriptional oscillations of light-sensitive regulatory elements in open-ocean eukaryotic plankton communities".Proceedings of the National Academy of Sciences of the United States of America 118.6(2021).