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bioRxiv · 10.1101/2021.01.08.426015

Description, taxonomy, and comparative genomics of a novel Thermoleptolyngbya strain isolated from hot springs of Ganzi, Sichuan China.

Tang, J.·Li, L.·Li, M.·Du, L.·Waleron, M.·Waleron, K.·Daroch, M.
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Abstract

Thermoleptolyngbya is a newly proposed genus of thermophilic cyanobacteria that are often abundant in thermal environments. However, a vast majority of Thermoleptolyngbya strains were not systematically identified, and genomic features of this genus are also sparse. Here, polyphasic approaches were employed to identify a thermophilic Thermoleptolyngbya A183 (FACHB-2491) isolated from hot spring Erdaoqiao, Ganzi prefecture, China. Morphological characterization was investigated by microscopy. Whilst the results of 16S rRNA were inconclusive, the phylogenetic reconstruction and secondary structures of 16S-23S ITS strongly suggested that A183 strain is a novel species within Thermoleptolyngbya. Moreover, genome-scale average nucleotide identity (ANI) confirmed the genetic divergence of A183 from Thermoleptolyngbya O-77. Comparative genome analysis revealed inconsistent genome structures of Thermoleptolyngbya strains. Further GO analysis showed that the specific genes were distributed in a wide range of functional categories. In addition, analysis of genes related to thermotolerance, signal transduction, and carbon/nitrogen/sulfur assimilation revealed the ability of this strain to adapt to inhospitable niches in hot springs.

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Tang, J., Li, L., Li, M., Du, L., Waleron, M., Waleron, K., Daroch, M.. 2021-01-09. Description, taxonomy, and comparative genomics of a novel Thermoleptolyngbya strain isolated from hot springs of Ganzi, Sichuan China.. https://doi.org/10.1101/2021.01.08.426015

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