Streptococcus

Timoney, John F.

doi:10.1002/9781119754862.ch26

Cited by 2 publications

(2 citation statements)

References 75 publications

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“…These genera were reported in the rumen uid of reindeer (Rangifer tarandus tarandus) in captive conditions [54], and their abundance is associated with dietary components (forage-toconcentrate ratio) in dairy cows [55]. Streptococcus is associated with both human and animal hosts, and it is considered both an opportunist pathogen and non-pathogenic commensal [56,57]. This genus plays an important role in the degradation of tannins present in the diets of some herbivores [58-60] and is correlated with a high-starch diet [55].…”

Section: Discussionmentioning

confidence: 99%

Comparative analysis of faecal bacterial microbiome between semi-captive and wild mule deer (Odocoileus hemionus crooki) in northern Mexico

Pacheco-Torres,

Hernández-Sánchez,

Peña

et al. 2024

Preprint

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The mule deer in arid regions of northern Mexico hold ecological and hunting significance. Their gastrointestinal microbiota plays a key role in health and energy extraction. This study characterises and compares the faecal bacterial profile and function of semi-captive (DS) and wild (DW) mule deer (Odocoileus hemionus crooki) populations. This was achieved by sequencing the V3–V4 region of the 16S rRNA gene. Functional bacterial predictions were evaluated based on Phylogenetic Investigation of Communities by Reconstruction of Unobserved States (PICRUSt2) analysis. The phyla Firmicutes (DS, 63.8%; DW, 40.4%), Bacteroidetes (DS, 25.4%; DW, 35.5%), and Proteobacteria (DS, 8.8%; DW, 10.7%) were more abundant in all samples, where Firmicutes was more abundant in the DS and Bacteroidetes in DW. Differences were observed in beta diversity between populations, with Firmicutes, Planctomycetes, Christensenellaceae and other taxa, contributed to the dissimilarity. A total of 352 metabolic pathways were identified, where cellular metabolism, unsaturated fatty acid metabolism, and amino acid metabolism were the enriched pathways. There were no significant differences in functional pathways between DS and DW populations. Bacterial communities in mule deer are mainly diet-associated, contributing to wildlife microbiome research. These insights have the potential to improve conservation efforts and promote deeper research into the cervid microbiota worldwide.

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Section: Discussionmentioning

confidence: 99%

Comparative analysis of faecal bacterial microbiome between semi-captive and wild mule deer (Odocoileus hemionus crooki) in northern Mexico

Pacheco-Torres,

Hernández-Sánchez,

Peña

et al. 2024

Preprint

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“…in the nasopharynx of healthy humans [2] and in the faeces of humans and animals [3][4][5]. The genus Streptococcus is an important genus of human and animal primary and opportunist pathogens and of non-pathogenic commensals [6]. In recent years, many novel species of streptococci from different sources have been reported, some of which were isolated from alpaca faeces [7], sheep [8], the oral cavity [9] and equine trachea [10].…”

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confidence: 99%

Streptococcus hohhotensis sp. nov., isolated from the breast milk of a healthy woman

Li,

Han,

et al. 2024

International Journal of Systematic and Evolutionary Microbiology

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Human breast milk contains lactic acid bacteria (LAB), which have an important influence on the composition of the intestinal microbia of infants. In this study, one strain of an α-hemolytic species of the genus Streptococcus, IMAU99199T, isolated from the breast milk of a healthy nursing mother in Hohhot city PR China, was studied to characterise its taxonomic status using phenotypic and molecular taxonomic methods. The results indicated that it represented a member of the mitis–suis clade, pneumoniae subclade of the genus Streptococcus. It is a Gram-stain-positive, catalase-negative and oxidase-negative bacterium, and the cells are globular, paired or arranged in short chains. The results of a phylogenetic analysis of its 16S rRNA gene and two housekeeping genes (gyrB and rpoB) placed it in the genus Streptococcus. A phylogenetic tree based on 135 single-copy genes sequences indicated that IMAU99199T formed a closely related branch well separated from ‘Streptococcus humanilactis’ IMAU99125, ‘Streptococcus bouchesdurhonensis’ Marseille Q6994, Streptococcus mitis NCTC 12261T, ‘Streptococcus vulneris’ DM3B3, Streptococcus toyakuensis TP1632T, Streptococcus pseudopneumoniae ATCC BAA-960T and Streptococcus pneumoniae NCTC 7465T. IMAU99199T and ‘S. humanilactis’ IMAU99125 had the highest average nucleotide identity (93.7 %) and digital DNA–DNA hybridisation (55.3 %) values, which were below the accepted thresholds for novel species. The DNA G+C content of the draft genome of IMAU99199T was 39.8 %. The main cellular fatty acids components of IMAU99199T were C16 : 0 and C16 : 1ω7. It grew at a temperature range of 25–45 °C (the optimum growth temperature was 37 °C) and a pH range of 5.0–8.0 (the optimum growth pH was 7.0). These data indicate that strain IMAU99199T represents a novel species in the genus Streptococcus, for which the name Streptococcus hohhotensis sp. nov. is proposed. The type strain is IMAU99199T (=GDMCC 1.1874T=KCTC 21155T).

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Streptococcus

Cited by 2 publications

References 75 publications

Comparative analysis of faecal bacterial microbiome between semi-captive and wild mule deer (Odocoileus hemionus crooki) in northern Mexico

Comparative analysis of faecal bacterial microbiome between semi-captive and wild mule deer (Odocoileus hemionus crooki) in northern Mexico

Streptococcus hohhotensis sp. nov., isolated from the breast milk of a healthy woman

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