气候变化领域集成服务门户(CCPortal): Niche adaptation promoted the evolutionary diversification of tiny ocean predators

CCPortal

DOI	10.1073/pnas.2020955118
	Niche adaptation promoted the evolutionary diversification of tiny ocean predators
	Latorre F.; Deutschmann I.M.; Labarre A.; Obiol A.; Krabberød A.K.; Pelletier E.; Sieracki M.E.; Cruaud C.; Jaillon O.; Massana R.; Logares R.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:25
英文摘要	Unicellular eukaryotic predators play a crucial role in the functioning of the ocean ecosystem by recycling nutrients and energy that are channeled to upper trophic levels. Traditionally, these evolutionarily diverse organisms have been combined into a single functional group (heterotrophic flagellates), overlooking their organismal differences. Here, we investigated four evolutionarily related species belonging to one cosmopolitan group of uncultured marine picoeukaryotic predators: Marine stramenopiles (MAST)-4 (species A, B, C, and E). Co-occurrence and distribution analyses in the global surface ocean indicated contrasting patterns in MAST-4A and C, suggesting adaptation to different temperatures. We then investigated whether these spatial distribution patterns were mirrored by MAST-4 genomic content using single-cell genomics. Analyses of 69 single cells recovered 66 to 83% of the MAST-4A/B/C/E genomes, which displayed substantial interspecies divergence. MAST-4 genomes were similar in terms of broad gene functional categories, but they differed in enzymes of ecological relevance, such as glycoside hydrolases (GHs), which are part of the food degradation machinery in MAST-4. Interestingly, MAST-4 species featuring a similar GH composition (A and C) coexcluded each other in the surface global ocean, while species with a different set of GHs (B and C) appeared to be able to coexist, suggesting further niche diversification associated with prey digestion. We propose that differential niche adaptation to temperature and prey type has promoted adaptive evolutionary diversification in MAST-4. We show that minute ocean predators from the same phylogenetic group may have different biogeography and genomic content, which needs to be accounted for to better comprehend marine food webs. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Biogeography; Ecoevolution; MAST-4; Phagocytosis; Protists
语种	英语
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/238509
作者单位	Institute of Marine Sciences (ICM), Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, E-08003, Spain; Department of Biosciences, Section for Genetics and Evolutionary Biology, University of Oslo, Oslo, N-0316, Norway; Metabolic Genomics Genoscope, Institut de Biologie François Jacob, Commissariat à l'Energie Atomique, CNRS, Univ Evry, Université Paris-Saclay, Evry, 91000, France; Research Federation for the Study of Global Ocean Systems Ecology and Evolution, FR2022/Tara Oceans Global Ocean System Ecology and Evolution, Paris, 75016, France; Ocean Science Division, National Science Foundation, Alexandria, VA 22314, United States; Genoscope, Institut de Biologie François Jacob Commissariat à l'Energie Atomique, Université Paris-Saclay, Evry, 91000, France
推荐引用方式 GB/T 7714	Latorre F.,Deutschmann I.M.,Labarre A.,et al. Niche adaptation promoted the evolutionary diversification of tiny ocean predators[J],2021,118(25).
APA	Latorre F..,Deutschmann I.M..,Labarre A..,Obiol A..,Krabberød A.K..,...&Logares R..(2021).Niche adaptation promoted the evolutionary diversification of tiny ocean predators.Proceedings of the National Academy of Sciences of the United States of America,118(25).
MLA	Latorre F.,et al."Niche adaptation promoted the evolutionary diversification of tiny ocean predators".Proceedings of the National Academy of Sciences of the United States of America 118.25(2021).