Bacterial communities on giant kelp in the Magellan Strait: Geographical and intra-thallus patterns

IF 4.3 2区 生物学 Q2 MICROBIOLOGY Environmental microbiology Pub Date : 2024-11-11 DOI:10.1111/1462-2920.70003
Daniela F. Soto, Camilo Muñoz, Pirjo Huovinen, José Garcés-Vargas, Iván Gómez
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Abstract

The giant kelp Macrocystis pyrifera is categorized as a keystone species, forming highly productive forests that provide ecosystem services and host a remarkable marine biodiversity of macro and microorganisms. The association of microorganisms with the algae is close and can be functionally interdependent. The Magellan Strait, a natural marine passage between the Atlantic and Pacific oceans, harbours extensive giant kelp forests. However, information related to the diversity of bacterial communities in this region is still scarce. In this study, 16S rRNA gene metabarcoding was used to characterize the diversity and composition of bacterial communities associated with apical blades and sporophylls of M. pyrifera from different sites (Bahía Buzo, San Gregorio, and Buque Quemado). Additionally, data from satellites and reanalysis, as well as tide data, were used to characterize the environmental variability. The findings revealed discernible local variations in bacterial taxa across sampling sites, with consistent dominance of Proteobacteria, Verrucomicrobia, Bacteroidetes, and Planctomycetes. Furthermore, a distinctive bacterial community structure was identified between apical and sporophyll blades of M. pyrifera. This research marks the inaugural characterization of bacterial community diversity and composition associated with M. pyrifera in the remote and understudied sub-Antarctic region of the Magellan Strait.

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麦哲伦海峡巨型海藻上的细菌群落:地理和表皮内模式
巨型海带(Macrocystis pyrifera)被归类为基石物种,它形成了高产森林,提供生态系统服务,并承载着巨大的海洋生物多样性,包括大型生物和微生物。微生物与藻类的关系密切,在功能上相互依存。麦哲伦海峡是大西洋和太平洋之间的天然海洋通道,拥有广阔的巨型海藻林。然而,有关该地区细菌群落多样性的信息仍然很少。在这项研究中,利用 16S rRNA 基因代谢编码来描述不同地点(Bahía Buzo、San Gregorio 和 Buque Quemado)与 M. pyrifera 顶端叶片和孢子叶相关的细菌群落的多样性和组成。此外,还利用卫星和再分析数据以及潮汐数据来描述环境变化的特征。研究结果表明,各采样点的细菌类群存在明显的局部差异,其中变形菌、疣藻菌、类杆菌和平面菌始终占据主导地位。此外,还在梨叶藻的顶端叶片和孢子叶片之间发现了独特的细菌群落结构。这项研究首次描述了麦哲伦海峡这一偏远且研究不足的亚南极地区与海草相关的细菌群落多样性和组成。
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来源期刊
Environmental microbiology
Environmental microbiology 环境科学-微生物学
CiteScore
9.90
自引率
3.90%
发文量
427
审稿时长
2.3 months
期刊介绍: Environmental Microbiology provides a high profile vehicle for publication of the most innovative, original and rigorous research in the field. The scope of the Journal encompasses the diversity of current research on microbial processes in the environment, microbial communities, interactions and evolution and includes, but is not limited to, the following: the structure, activities and communal behaviour of microbial communities microbial community genetics and evolutionary processes microbial symbioses, microbial interactions and interactions with plants, animals and abiotic factors microbes in the tree of life, microbial diversification and evolution population biology and clonal structure microbial metabolic and structural diversity microbial physiology, growth and survival microbes and surfaces, adhesion and biofouling responses to environmental signals and stress factors modelling and theory development pollution microbiology extremophiles and life in extreme and unusual little-explored habitats element cycles and biogeochemical processes, primary and secondary production microbes in a changing world, microbially-influenced global changes evolution and diversity of archaeal and bacterial viruses new technological developments in microbial ecology and evolution, in particular for the study of activities of microbial communities, non-culturable microorganisms and emerging pathogens
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