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首页> 外文期刊>Aquatic Ecology >Phenotype changes of cyanobacterial and microbial distribution characteristics of surface sediments in different periods of cyanobacterial blooms in Taihu Lake
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Phenotype changes of cyanobacterial and microbial distribution characteristics of surface sediments in different periods of cyanobacterial blooms in Taihu Lake

机译：太湖植物不同时期表面沉积物的蓝细菌和微生物分布特征的表型变化

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摘要

This study investigates the morphological changes in cyanobacterial and microbial distribution characteristics of surface sediments, throughout different cyanobacterial blooms periods in Zhushan Bay, Taihu Lake. Comparative microscopic analysis of cyanobacterial morphology (n = 36) was performed during the formation period (W-1), stationary period (W-2), decline period (W-3) and decomposition period (W-4). Simultaneously, sequence analysis was performed on microbial 16S rRNA genes in sediments (n = 36) by high-throughput sequencing. The coverage of the sequencing library was very high (100%) indicating that the sequencing results well represented the microbes present in samples, among which the species richness in W-4 was the highest, while the species distribution uniformity was low. The microbial abundance distribution in all four periods showed that Firmicutes (33.45%), Cyanobacteria (30.44%), Proteobacteria (27.17%) and Bacteroidetes (7.2%) were the dominant flora, with W-1 dominated by Cyanobacteria, W-2 dominated by Firmicutes, W-3 dominated by Proteobacteria and Cyanobacteria, and W-4 dominated by Proteobacteria. There were significant differences in microbial species abundance and distribution observed during each cyanobacterial bloom period and synchronous microorganisms in the sediment regulated bacterial abundance and distribution through signal transduction of various proteases. The findings of this study help to establish the impact of cyanobacteria blooms on the sediment environment and benefit the comprehensive assessment of hazard presented by cyanobacteria to the aquatic environment.
机译：本研究研究了太湖湾志山湾的不同蓝藻绽放时期的地表沉积物和微生物和微生物分布特征的形态变化。在地层期（W-1），固定时期（W-2），下降期（W-3）和分解期间进行蓝藻形态（n = 36）的对比微观分析（n = 36），并进行分解期（W-4）。同时，通过高通量测序对沉积物（n = 36）中的微生物16s rRNA基因进行序列分析。测序文库的覆盖率非常高（100％），表明测序结果良好地代表样品中存在的微生物，其中W-4中的物种丰富度最高，而物种分布均匀性低。所有四个时期的微生物丰度分布表明，压花（33.45％），蓝菌（30.44％），植物菌（27.17％）和菌株（7.2％）是优势菌群，用蓝藻主导地位，W-2主导通过致力，W-3由植物细菌和蓝藻，和由植物主导的W-4。在每种蓝藻均线期间观察到微生物物种丰富和分布的显着差异，并通过各种蛋白酶的信号转导通过信号转导的细菌性丰度和分布的同步微生物。这项研究的结果有助于建立蓝藻绽放对沉积物环境的影响，效益综合评估蓝藻对水生环境的危害。

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