Results 31 to 40 of about 2,038,554 (284)

Competitive and cooperative metabolic interactions in bacterial communities [PDF]

Nature Communications, 2011
Revealing the ecological principles that shape communities is a major challenge of the post-genomic era. To date, a systematic approach for describing inter-species interactions has been lacking. Here we independently predict the competitive and cooperative potential between 6,903 bacterial pairs derived from a collection of 118 species' metabolic ...
Freilich, Shiri, Zarecki, Raphy, Eilam, Omer, Segal, Ella Shtifman, Henry, Christopher S., Kupiec, Martin, Gophna, Uri, Sharan, Roded, Ruppin, Eytan   +8 more
openaire   +2 more sources

The tip protein PAAR is required for the function of the type VI secretion system

Microbiology Spectrum, 2023
Bacteria are constantly competing to colonize crowded ecological niches, such as the human gut. The type VI secretion system (T6SS) is a critical bacterial weapon in this warfare.
Solène G. Beauvois, Nicolas Flaugnatti, Marianne Ilbert, Marie Boyer, Esther Gavello-Fernandez, Rémi Fronzes, Dukas Jurėnas, Laure Journet   +7 more
doaj   +1 more source

Deadly competition between sibling bacterial colonies [PDF]

Proceedings of the National Academy of Sciences, 2009
Bacteria can secrete a wide array of antibacterial compounds when competing with other bacteria for the same resources. Some of these compounds, such as bacteriocins, can affect bacteria of similar or closely related strains. In some cases, these secretions have been found to kill sibling cells that belong to the same colony. Here,
Avraham, Be'er, H P, Zhang, E-L, Florin, Shelley M, Payne, Eshel, Ben-Jacob, Harry L, Swinney   +5 more
openaire   +2 more sources

The antimicrobial systems of Streptococcus suis promote niche competition in pig tonsils

Virulence, 2022
Streptococcus suis can cause severe infections in pigs and humans. The tonsils of pigs are major niches for S. suis, and different serotypes of S. suis can be found in the same tonsil. Pig tonsil colonization by S.
Zijing Liang, Huizhen Wu, Chen Bian, Hao Chen, Yanling Shen, Xueping Gao, Jiale Ma, Huochun Yao, Liping Wang, Zongfu Wu   +9 more
doaj   +1 more source

The ecological role of bacteriocins in bacterial competition

Trends in Microbiology, 1999
Bacteriocins are an abundant class of antimicrobial molecules that appear to mediate population dynamics within species. The bacteriocins of Escherichia coli have served as a model for exploring the ecological role of these potent toxins. Studies suggest that colicins provide a competitive edge in nutrient-poor environments and that there might be a ...
Riley, Margaret A, Gordon, David
openaire   +3 more sources

The Role of Type VI Secretion System Effectors in Target Cell Lysis and Subsequent Horizontal Gene Transfer

Cell Reports, 2017
Bacteria use type VI secretion systems (T6SSs) to manipulate host cells during pathogenesis or to kill competing bacteria, which, in some cases, increases horizontal gene transfer.
Peter David Ringel, Di Hu, Marek Basler
doaj   +1 more source

Polymicrobial airway bacterial communities in adult bronchiectasis patients [PDF]

, 2014
Background: Chronic airway infection contributes to the underlying pathogenesis of non-cystic fibrosis bronchiectasis (NCFBr). In contrast to other chronic airway infections, associated with COPD and CF bronchiectasis, where polymicrobial communities ...
Christopher J Stewart, Smith, Darren L., Jary, Hannah, Andrew Nelson, Perry, J. D. (John), Nelson, Andrew, Stewart, Christopher, Smith, Darren, Anthony De Soyza, Stephen P Cummings, Perry, A, John D Perry, Clare Lanyon, Purcell, Paul, Lanyon, Clare, Hannah Jary, Darren L Smith, Paul Purcell, de Soyza, Anthony, Perry, Audrey, Cummings, Stephen, Perry, John, Audrey Perry   +22 more
core   +1 more source

Competitive and Non-competitive Inhibitors of Bacterial Sulphate Reduction [PDF]

Journal of General Microbiology, 1952
Summary: The selenate ion, a remarkably powerful competitive antagonist of the reduction of sulphate by Desulphovibrio desulphuricans (Hildenborough) suspensions, did not affect reduction of sulphite and thiosulphate. Cysteine, methionine and glutathione had no anti-selenate effect. Selenate also inhibited the growth of D.
openaire   +2 more sources

Competition and predation as possible causes of bacterial rarity [PDF]

Environmental Microbiology, 2019
Summary We assembled communities of bacteria and exposed them to different nutrient concentrations with or without predation by protists. Taxa that were rare in the field were less abundant at low nutrient concentrations than common taxa, independent of predation.
Kurm, Viola, van der Putten, Wim H., Weidner, Simone, Geisen, Stefan, Snoek, Basten L., Bakx, Tanja, Gera Hol, Wilhelmina H.   +6 more
openaire   +6 more sources

Impact of Strain Competition on Bacterial Resistance in Immunocompromised Populations [PDF]

Antibiotics, 2020
Despite the risk of emerging drug resistance that occurs with the frequent use of antimicrobial agents, targeted and prophylactic antibiotics have been considered crucial to opportunistic infection management among the HIV/AIDS-immunocompromised.
Ashley A. DeNegre, Kellen Myers, Nina H. Fefferman   +2 more
openaire   +3 more sources