The eukaryome of modern microbialites reveals distinct colonization across aquatic ecosystems.

IF 7.8 1区 生物学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY npj Biofilms and Microbiomes Pub Date : 2024-09-03 DOI:10.1038/s41522-024-00547-z
Anthony M Bonacolta, Pieter T Visscher, Javier Del Campo, Richard Allen White Iii
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Abstract

Protists are less studied for their role and diversity in ecosystems. Notably, protists have played and still play an important role in microbialites. Microbialites, or lithified microbial mats, represent the oldest evidence of fossil biofilms (~3.5 Gyr). Modern microbialites may offer a unique proxy to study the potential role of protists within a geological context. We examined protist diversity in freshwater (Kelly and Pavilion Lake in British Columbia, Canada) and marine (Highborne Cay, Bahamas) to hypersaline (Shark Bay, Australia) microbialites to decipher their geomicrobiological role. The freshwater microbialite communities were clearly distinct from their marine and hypersaline counterparts. Chlorophytes had higher numerical abundance in freshwater microbialites; whereas pennate diatoms dominated numerically in marine microbialites. Despite the differences, protists across ecosystems may have adopted similar roles and functions. We suggest a consistent biogeochemical role of protists across microbialites globally; but that salinity may shape protist composition and evolution in these ecosystems.

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现代微生物岩的真核细胞组揭示了水生生态系统中不同的定植情况。
对原生生物在生态系统中的作用和多样性的研究较少。值得注意的是,原生生物过去和现在都在微生物岩中发挥着重要作用。微生物岩或岩石化微生物垫是化石生物膜(约 3.5 Gyr)的最古老证据。现代微生物岩可能为研究原生生物在地质环境中的潜在作用提供了一个独特的替代物。我们研究了淡水(加拿大不列颠哥伦比亚省的凯利湖和亭子湖)和海洋(巴哈马的海博恩礁)至超盐(澳大利亚的鲨鱼湾)微生物岩中的原生生物多样性,以解读它们在地质微生物学中的作用。淡水微生物岩群落明显有别于海洋和超盐微生物岩群落。在淡水微生物岩中,叶绿藻的数量较多;而在海洋微生物岩中,羽状硅藻在数量上占主导地位。尽管存在差异,但不同生态系统中的原生生物可能具有相似的作用和功能。我们认为,原生生物在全球微生物岩中发挥着一致的生物地球化学作用;但盐度可能会影响这些生态系统中原生生物的组成和进化。
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来源期刊
npj Biofilms and Microbiomes
npj Biofilms and Microbiomes Immunology and Microbiology-Microbiology
CiteScore
12.10
自引率
3.30%
发文量
91
审稿时长
9 weeks
期刊介绍: npj Biofilms and Microbiomes is a comprehensive platform that promotes research on biofilms and microbiomes across various scientific disciplines. The journal facilitates cross-disciplinary discussions to enhance our understanding of the biology, ecology, and communal functions of biofilms, populations, and communities. It also focuses on applications in the medical, environmental, and engineering domains. The scope of the journal encompasses all aspects of the field, ranging from cell-cell communication and single cell interactions to the microbiomes of humans, animals, plants, and natural and built environments. The journal also welcomes research on the virome, phageome, mycome, and fungome. It publishes both applied science and theoretical work. As an open access and interdisciplinary journal, its primary goal is to publish significant scientific advancements in microbial biofilms and microbiomes. The journal enables discussions that span multiple disciplines and contributes to our understanding of the social behavior of microbial biofilm populations and communities, and their impact on life, human health, and the environment.
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