Patterns of free-living and particle-attached bacteria along environmental gradients in Lake Taihu.

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-06-01 DOI:10.1139/cjm-2022-0243

Guijuan Xie, Robbie M Martin, Changli Liu, Li Zhang, Xiangming Tang

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引用次数: 1

Abstract

To elucidate the effects of environmental heterogeneity on diversity, composition, and degree of overlap between free-living (FL) and particle-attached (PA) bacteria, we sampled large, shallow, eutrophic Lake Taihu, China across gradients spanning riverine inflow, cyanobacterial blooms, and the open limnetic area. Using high-throughput sequencing of the 16S rRNA gene, we show that (i) bacterial communities near riverine inflow had high α-diversity and a high degree of overlap between FL and PA lifestyles, (ii) communities in cyanobacterial blooms have reduced α-diversity within the PA lifestyle, and (iii) communities from the limnetic area had the lowest bacterial α-diversity within the FL lifestyle and a medium degree of overlap between the FL and PA lifestyles. Redundancy analysis showed that the variation of the FL bacterial community was shaped by suspended solids and total phosphorous, while the variation of the PA bacterial community was shaped by suspended solids, dissolved oxygen, and the percentage of organic matter in suspended solids. This study highlights the importance of environmental heterogeneity, riverine input, cyanobacterial blooms, and nutrient status on the spatial distribution patterns of FL and PA bacterial communities in freshwater lakes.

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太湖环境梯度上自由生活和颗粒附着细菌的分布规律。

为了阐明环境异质性对自由生活(FL)和颗粒附着(PA)细菌多样性、组成和重叠程度的影响，我们对中国太湖大型、浅水、富营养化的湖泊进行了采样，跨越河流流入、蓝藻华和开放的湖泊区。利用16S rRNA基因的高通量测序，我们发现(i)河流流入附近的细菌群落α-多样性高，FL和PA生活方式之间高度重叠，(ii)蓝藻华群落α-多样性在PA生活方式中降低，(iii)沼泽区群落在FL生活方式中细菌α-多样性最低，FL和PA生活方式之间的重叠程度中等。冗余分析表明，FL细菌群落的变化受悬浮物和总磷的影响，而PA细菌群落的变化受悬浮物、溶解氧和悬浮物中有机质百分比的影响。本研究强调了环境异质性、河流输入、蓝藻华和营养状况对淡水湖FL和PA细菌群落空间分布格局的重要性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.