切萨皮克湾的花青菌:分离、多样性和适应。

IF 5.3 2区 生物学 Q1 MARINE & FRESHWATER BIOLOGY
Marine Life Science & Technology Pub Date : 2025-01-07 eCollection Date: 2025-08-01 DOI:10.1007/s42995-024-00271-9
Feng Chen
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引用次数: 0

摘要

微小的单细胞蓝藻或picocyanobacteria(0.5-3µm)因其生态意义而非常重要。切萨皮克湾是一个温带河口,含有丰富多样的picocyanobacteria。在过去20年对切萨皮克湾picocyanobacteria的研究中,发现了5.2聚藻球菌亚群的新成员。为揭示切萨皮克湾和其他沿海河口的生态生理学、生物地理学、基因组学和分子进化奠定了基础。众所周知,与沿海和开放海洋的同类相比,海湾picocyanobacteria更能忍受温度、盐度和重金属的变化。许多从海湾中分离出来的花青菌含有丰富的毒素-抗毒素(TA)基因,这表明TA系统可能为它们提供了一种遗传优势,以应对多变的河口环境。在海湾中存在明显的冬季和夏季picocyanobacteria,表明温带河口的picocyanobacteria群落存在动态的季节变化。湾内除含有5.2聚囊球菌亚群外,还含有淡水聚囊球菌、蓝藻和受河流涌入和海洋潮汐影响的海洋聚囊球菌。在白令海和楚科奇海发现了一些切萨皮克湾的picocyanobacterian分支,显示了切萨皮克湾和极地picocyanobacterian之间的联系。河口picocyanobacteria的基因组序列为淡水、河口和海洋单细胞蓝藻的分类和进化提供了新的见解。河口连接着淡水和海洋生态系统。这篇综述试图将我们从切萨皮克湾picocyanobacteria学到的东西扩展到淡水和海水中的picocyanobacteria。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Picocyanobacteria in the Chesapeake Bay: isolation, diversity, and adaptation.

Picocyanobacteria in the Chesapeake Bay: isolation, diversity, and adaptation.

Picocyanobacteria in the Chesapeake Bay: isolation, diversity, and adaptation.

Picocyanobacteria in the Chesapeake Bay: isolation, diversity, and adaptation.

Tiny unicellular cyanobacteria or picocyanobacteria (0.5-3 µm) are important due to their ecological significance. Chesapeake Bay is a temperate estuary that contains abundant and diverse picocyanobacteria. Studies of Chesapeake Bay picocyanobacteria in the past 20 years led to the finding of new members of subcluster 5.2 Synechococcus. They laid the foundation for revealing the ecophysiology, biogeography, genomics, and molecular evolution of picocyanobacterial in the Chesapeake Bay and other coastal estuaries. The Bay picocyanobacteria are known to better tolerate the changes in temperature, salinity, and heavy metals compared to their coastal and open-ocean counterparts. Many picocyanobacteria isolated from the Bay contain rich toxin-antitoxin (TA) genes, suggesting that the TA system may provide them with a genetic advance to cope with variable estuarine environments. Distinct winter and summer picocyanobacteria are present in the Bay, suggesting a dynamic seasonal shift of the picocyanobacterial community in the temperate estuary. While the Bay contains subcluster 5.2 Synechococcus, it also contains freshwater Synechococcus, Cyanobium, and marine Synechococcus due to river influx and the ocean's tidal influence. Some Chesapeake Bay picocyanobacterial clades were found in the Bering Sea and Chukchi Sea, showing a link between the Bay and polar picocyanobacteria. Genomic sequences of estuarine picocyanobacteria provide new insight into the taxonomy and evolution of freshwater, estuarine, and marine unicellular cyanobacteria. Estuaries connect freshwater and marine ecosystems. This overview attempts to extend what we learned from Chesapeake Bay picocyanobacteria to picocyanobacteria in freshwater and marine waters.

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来源期刊
Marine Life Science & Technology
Marine Life Science & Technology MARINE & FRESHWATER BIOLOGY-
CiteScore
9.60
自引率
10.50%
发文量
58
期刊介绍: Marine Life Science & Technology (MLST), established in 2019, is dedicated to publishing original research papers that unveil new discoveries and theories spanning a wide spectrum of life sciences and technologies. This includes fundamental biology, fisheries science and technology, medicinal bioresources, food science, biotechnology, ecology, and environmental biology, with a particular focus on marine habitats. The journal is committed to nurturing synergistic interactions among these diverse disciplines, striving to advance multidisciplinary approaches within the scientific field. It caters to a readership comprising biological scientists, aquaculture researchers, marine technologists, biological oceanographers, and ecologists.
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