- Description of Corynebacterium poyangense sp. nov., isolated from the feces of the greater white-fronted geese (Anser albifrons)
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Qian Liu , Guoying Fan , Kui Wu , Xiangning Bai , Xi Yang , Wentao Song , Shengen Chen , Yanwen Xiong , Haiying Chen
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J. Microbiol. 2022;60(7):668-677. Published online May 25, 2022
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DOI: https://doi.org/10.1007/s12275-022-2089-9
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Two novel Gram-positive, non-spore-forming, facultatively
anaerobic, non-motile, and short rods to coccoid strains were
isolated from the feces of the greater white-fronted geese
(Anser albifrons) at Poyang Lake. The 16S rRNA gene sequences
of strains 4H37-19T and 3HC-13 shared highest identity
to that of Corynebacterium uropygiale Iso10T (97.8%).
Phylogenetic and phylogenomic analyses indicated that strains
4H37-19T and 3HC-13 formed an independent clade within
genus Corynebacterium and clustered with Corynebacterium
uropygiale Iso10T. The average nucleotide identity and digital
DNA-DNA hybridization value between strains 4H37-19T and
3HC-13 and members within genus Corynebacterium were
all below 95% and 70%, respectively. The genomic G + C content
of strains 4H37-19T and 3HC-13 was 52.5%. Diphosphatidylglycerol
(DPG), phosphatidylglycerol (PG), phosphatidylinositol
(PI), phosphatidylcholine, and phosphatidyl inositol
mannosides (PIM) were the major polar lipids, with
C18:1ω9c, C16:0, and C18:0 as the major fatty acids, and MK-8
(H4), MK-8(H2), and MK-9(H2) as the predominant respiratory
quinones. The major whole cell sugar was arabinose,
and the cell wall included mycolic acids. The cell wall peptidoglycan
contained meso-diaminopimelic acid (meso-DAP).
The polyphasic taxonomic data shows that these two strains
represent a novel species of the genus Corynebacterium, for
which the name Corynebacterium poyangense sp. nov. is
proposed. The type strain of Corynebacterium poyangense
is 4H37-19T (=GDMCC 1.1738T = KACC 21671T).
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Citations
Citations to this article as recorded by  - Valid and accepted novel bacterial taxa isolated from non-domestic animals and taxonomic revisions published in 2023
Erik Munson, Claire R. Burbick, Sara D. Lawhon, Trinity Krueger, Elena Ruiz-Reyes, Romney M. Humphries
Journal of Clinical Microbiology.2024;[Epub] CrossRef - Validation List no. 212. Valid publication of new names and new combinations effectively published outside the IJSEM
Aharon Oren, Markus Göker
International Journal of Systematic and Evolutionary Microbiology
.2023;[Epub] CrossRef - Keratokonjunktivitisli bir tavuktan Corynebacterium spp. ve Arcanobacterium spp. izolasyonu
Hüban GÖÇMEN, Banur BOYNUKARA
Veteriner Hekimler Derneği Dergisi.2023; 94(2): 161. CrossRef
- The cytoplasmic loops of AgrC contribute to the quorum-sensing activity of Staphylococcus aureus
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Qian Huang , Yihui Xie , Ziyu Yang , Danhong Cheng , Lei He , Hua Wang , Qian Liu , Min Li
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J. Microbiol. 2021;59(1):92-100. Published online November 17, 2020
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DOI: https://doi.org/10.1007/s12275-021-0274-x
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673
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In Staphylococcus aureus, the accessory gene regulator (agr)
quorum-sensing system is thought to play an important role
in biofilm formation. The histidine kinase AgrC is one of the
agr system components and activated by the self-generated
auto-inducing peptide (AIP), which is released continuously
into the extracellular environment during bacterial growth.
The extracellular loops (Extra-loops) of AgrC are crucial for
AIP binding. Here, we reported that the cytoplasmic loops
(Cyto-loops) of AgrC are also involved in Agr activity. We
identified S. aureus ST398 clinical isolates containing a naturally
occurring single amino acid substitution (lysine to isoleucine)
at position 73 of an AgrC Cyto-loop that exhibited
significantly stronger biofilm formation and decreased Agr
activity compared to the wild-type strain. A constructed strain
containing the K73I point mutation in AgrC Cyto-loop continued
to show a growth dependent induction of the agr system,
although the growth dependent induction was delayed
by about 6 h compared to the wild-type. In addition, a series
of strains containing deletion mutants of the AgrC Cyto- and
Extra-loops were constructed and revealed that the removal
of the two Cyto-loops and Extra-loops 2 and 3 totally abolished
the Agr activity and the growth-dependence on the agr
system induction. Remarkably, the Extra-loop 1 deletion did
not affect the Agr activity. In conclusion, the AgrC Cyto-loops
play a crucial role in the S. aureus quorum-sensing activity.
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Citations
Citations to this article as recorded by - Hijacking the signal: a critical evaluation of quorum sensing inhibitors as a next-generation approach against Staphylococcus aureus
Sama S. Eltaher, Zeina Khattab, Gina Walid, Omar Loay, Rana Emad, Clara Hakim, Mohamed Elhadidy
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Hamza M. A. Eid, Yahya A. Almutawif, Najeeb Ullah Khan
Archives of Microbiology.2026;[Epub] CrossRef - BREAKING BACTERIAL CODE
Vaishnavi Sonar, Sujata Dudhe, Paresh Sonawane, Laxmikant Borse
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Aiswarya Sudheer, Debabrata Ghosh Dastidar, Gourav Ghosh, Zarin Taj, Illathu Kandy Nidhin, Indranil Chattopadhyay
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Zhiyi Ye, Tianchi Chen, Qi Zhang, Weiyi Huang, Lei He
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Juntao Hu, Yibing Huang, Hao Hao, Pujing Tian, Yinuo Yin, Yuting He, Fengjie Hao, Wantong Jiang, Yanping Zhang, Youzhong Wan, Quan Luo
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B.R. Maha Swetha, M. Saravanan, Prakash Piruthivraj
Microbial Pathogenesis.2024; 186: 106495. CrossRef - In vitro and in silico evaluation of anti-quorum sensing activity of marine red seaweeds-Portieria hornemannii and Halymenia dilatata
Prakash Piruthivraj, B.R. Maha Swetha, A. Anita Margret, A. Sherlin Rosita, Parthasarathi Rengasamy, Rajapandiyan Krishnamoorthy, Mansour K. Gatasheh, Khalid Elfaki Ibrahim, Sekhu Ansari, Natesan Vijayakumar
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Nadira Nurxat, Lili Wang, Qichen Wang, Shujing Li, Chen Jin, Yaran Shi, Ayjiamali Wulamu, Na Zhao, Yanan Wang, Hua Wang, Min Li, Qian Liu
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