Fucich Daniel, Xu Yongle, Sosa Ana, Jia Yufeng, Zhang Rui, Jiao Nianzhi, Chen Feng
The Institute of Marine and Environmental Technology, University of Maryland Center for Environmental Science, Baltimore, MD, USA.
Institute of Marine Science and Technology, Shandong University, Qingdao, China.
Genome Biol Evol. 2021 Feb 3;13(2). doi: 10.1093/gbe/evab009.
Synechococcus are picocyanobacteria with a cosmopolitan distribution. They are capable of surviving in a wide variety of environmental conditions. Synechococcus have been isolated from the Chesapeake Bay during winter months, and they show an impressive tolerance to cold temperatures. Cold-adapted Synechococcus are unique and diverse, as they have complex phylogenetic lineages closely related to subalpine cluster II, Bornholm Sea cluster, CB7 cluster, and some novel lineages which are independent from summer estuarine strains in subcluster 5.2. CBW1002 and CBW1006 are the first complete genomes to represent Bornholm Sea cluster Synechococcus strains. They have some of the largest genomes among the Synechococcus (3.8 Mb) and share many unique and cryptic homologs which could give insight into their ability to tolerate such cold and dynamic conditions in the Chesapeake Bay estuary.
聚球藻属是一类分布广泛的蓝细菌。它们能够在各种各样的环境条件下生存。聚球藻属已在冬季从切萨皮克湾分离出来，并且它们对低温表现出惊人的耐受性。适应寒冷的聚球藻属独特且多样，因为它们具有与亚高山簇II、博恩霍尔姆海簇、CB7簇密切相关的复杂系统发育谱系，以及一些独立于5.2亚簇夏季河口菌株的新谱系。CBW1002和CBW1006是代表博恩霍尔姆海簇聚球藻属菌株的首批完整基因组。它们拥有聚球藻属中一些最大的基因组（3.8 Mb），并共享许多独特的隐秘同源物，这有助于深入了解它们在切萨皮克湾河口耐受此类寒冷和动态条件的能力。
