Project description:We report here the complete genome sequence of Streptococcus ratti strain JH145. Streptococcus ratti is a cariogenic species of mutans streptococcus that has been isolated from rat and human teeth. The strain JH145, derived from strain BHT-2, is interesting for oral health because it does not produce cariogenic lactic acid but shows robust biofilm production.
Project description:Streptococcus oralis is an early colonizer and one of the most abundant species found in the human oral cavity. We report the complete genome sequence of S. oralis 34 (1,920,884 bp; GC content, 41.3%), commonly used in many oral microbiology studies exploring bacterial attachment and interaction(s) within mixed-species model systems.
Project description:We assembled a complete genome sequence of Streptococcus gallolyticus strain XH2168 by combining the sequencing results from both the Illumina and Oxford Nanopore platforms. The assembled genome comprises 2,392,629 bp, with 37.69% G+C content and 2,265 protein-coding genes.
Project description:Streptococcus thermophilus strain ND03 is a Chinese commercial dairy starter used for the manufacture of yogurt. It was isolated from naturally fermented yak milk in Qinghai, China. We present here the complete genome sequence of ND03 and compare it to three other published genomes of Streptococcus thermophilus strains.
Project description:The leaf surface, known as the phylloplane, represents the initial point of contact for plants in their interaction with the aboveground environment. Although prior research has assessed how leaves respond to external pH variations, particularly in the context of acid rain, there remains a limited understanding of the molecular mechanisms through which plants detect, respond to, and mitigate cellular damage. To look at plant responses to external pH changes, we measured the phylloplane pH for five species with variable phylloplane pH that ranged in the dry control. Moreover, we investigated the phylloplane pH in response to three pH treatments (pH 6.5, 4, and 2) and found that plants can modify their phylloplane pH, and this buffering ability is species-specific. Among the species analyzed, only Gossypium displayed a strong buffering ability. For treatments where leaves were exposed to either pH 6.5 or pH 4, Gossypium alkalinized the phylloplane pH slightly higher than the dry control pH. Remarkably, when leaves were exposed to pH 2, Gossypium was able to buffer the pH to 6 within five minutes. Furthermore, our transcriptional analysis indicated that the responses to external pH changes varied among species, highlighting differentially expressed genes associated with calcium (Ca2+) signaling pathways, as well as Ca2+ and H+-ATPases pumps. These findings also suggest that pH stress negatively impacts photosynthesis, and that both wetness and moderate pH shifts may trigger additional abiotic and biotic stress signaling pathways.
Project description:We report the complete genome sequence for Streptococcus pyogenes strain 1838 (type emm3) isolated from a patient with toxic shock syndrome. The strain lacked the speK- and sla-encoding prophage frequently encountered among emm3 strains and possessed an Arg66His mutation in CovR of the 2-component virulence regulatory system CovRS.
Project description:Streptococcus sp. strain NPS 308, isolated from an 8-year-old girl diagnosed with infective endocarditis, likely presents a novel species of Streptococcus Here, we present a complete genome sequence of this species, which will contribute to better understanding of the pathogenesis of infective endocarditis.
Project description:The lytic Streptococcus pneumoniae phage MS1 was isolated from a throat swab of a patient with symptoms of upper respiratory tract infection. The genome of this siphophage has 56,075 bp, 42.3% G+C content, and 77 open reading frames, including queuosine biosynthesis genes. Phage MS1 is related to pneumococcal phage Dp-1.