Niche differentiation and biogeography of Bathyarchaeia in paddy soil ecosystems: a case study in eastern China.

IF 6.2 2区 环境科学与生态学 Q1 GENETICS & HEREDITY Environmental Microbiome Pub Date : 2024-03-01 DOI:10.1186/s40793-024-00555-8
Xingyun Yi, Kristian Koefoed Brandt, Shudan Xue, Jingjing Peng, Yifei Wang, Meng Li, Ye Deng, Guilan Duan
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Abstract

Bathyarchaeia (formerly Bathyarchaeota) is a group of highly abundant archaeal communities that play important roles in global biogeochemical cycling. Bathyarchaeia is predominantly found in sediments and hot springs. However, their presence in arable soils is relatively limited. In this study, we aimed to investigate the spatial distributions and diversity of Bathyarchaeia in paddy soils across eastern China, which is a major rice production region. The relative abundance of Bathyarchaeia among total archaea ranged from 3 to 68% in paddy soils, and Bathy-6 was the dominant subgroup among the Bathyarchaeia (70-80% of all sequences). Bathyarchaeia showed higher migration ability and wider niche width based on the neutral and null model simulations. Bathy-6 was primarily assembled by deterministic processes. Soil pH and C/N ratio were identified as key factors influencing the Bathyarchaeia composition, whereas C/N ratio and mean annual temperature influenced the relative abundance of Bathyarchaeia. Network analysis showed that specific Bathyarchaeia taxa occupied keystone positions in the archaeal community and co-occurred with some methanogenic archaea, including Methanosarcina and Methanobacteria, and ammonia-oxidizing archaea belonging to Nitrososphaeria. This study provides important insights into the biogeography and niche differentiation of Bathyarchaeia particularly in paddy soil ecosystems.

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稻田土壤生态系统中蟹形目(Bathyarchaeia)的生态位分化和生物地理学:中国东部的一个案例研究。
藻生真菌(前身为藻生古菌)是一类非常丰富的古菌群落,在全球生物地球化学循环中发挥着重要作用。藻生群主要存在于沉积物和温泉中。然而,它们在耕地土壤中的存在却相对有限。在这项研究中,我们旨在调查水稻主产区华东地区稻田土壤中褐藻虫的空间分布和多样性。在水稻田土壤中,弓形虫在所有古细菌中的相对丰度从 3% 到 68% 不等,弓形虫-6 是弓形虫中的主要亚群(占所有序列的 70-80%)。根据中性模型和空模型模拟,Bathyarchaeia表现出更高的迁移能力和更宽的生态位宽度。Bathy-6 主要由确定性过程组装而成。土壤 pH 值和 C/N 比值被认为是影响 Bathyarchaeia 组成的关键因素,而 C/N 比值和年平均温度则影响 Bathyarchaeia 的相对丰度。网络分析显示,特定的Bathyarchaeia类群在古菌群落中占据关键位置,并与一些产甲烷古菌(包括Methanosarcina和Methanobacteria)以及属于Nitrososphaeria的氨氧化古菌共生。这项研究为研究水稻田土壤生态系统中的褐藻古菌的生物地理学和生态位分化提供了重要依据。
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来源期刊
Environmental Microbiome
Environmental Microbiome Immunology and Microbiology-Microbiology
CiteScore
7.40
自引率
2.50%
发文量
55
审稿时长
13 weeks
期刊介绍: Microorganisms, omnipresent across Earth's diverse environments, play a crucial role in adapting to external changes, influencing Earth's systems and cycles, and contributing significantly to agricultural practices. Through applied microbiology, they offer solutions to various everyday needs. Environmental Microbiome recognizes the universal presence and significance of microorganisms, inviting submissions that explore the diverse facets of environmental and applied microbiological research.
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