Sökning: "bacterial competition systems"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden bacterial competition systems.

1. 1. To defend or to offend? : Bacterial defence and competition systems

   Författare :Danna Lee; Sanna Koskiniemi; Marjan van der Woude; Uppsala universitet; []
   Nyckelord :bacterial defence systems; bacterial competition systems; toxin-antitoxin systems; colicin; contact-dependent growth inhibition CDI ; type VI secretion system T6SS ; Rearrangement hotspot Rhs proteins; CRISPR; horizontal gene transfer; antibiotic resistance; Salmonella; Enterotoxigenic E. coli ETEC ; probiotics; synthetic biology.;

   Sammanfattning : Bacteria are prokaryotic microorganisms that can be found in all niches of the biosphere. Bacteria must constantly evolve in order to survive and adapt to their environments. Defence systems and competition systems play a vital role in ensuring the survival of bacteria. LÄS MER

3. 2. Interactions between Bacteria and Fungi on Aquatic Detritus – Causes and Consequences

   Författare :Cecilia Mille-Lindblom; Lars Tranvik; Helmut Fischer; Eric Chauvet; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; bacteria; fungi; decomposition; antagonism; extracellular enzymes; competition; macrophytes; dissolved organic carbon DOC ; ergosterol; Ekologi; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

   Sammanfattning : Bacteria and fungi dominate the decomposition of aquatic plants, a major process in the carbon and nutrient cycling in many aquatic systems. Although phylogenetically distant, bacteria and fungi often live in close proximity with each other. Since these microorganisms also have similar ecological functions, interactions have developed between them. LÄS MER

4. 3. Functional and structural characterizations of phytoplankton-bacteria interactions in response to environmental challenges

   Författare :Eva Sörenson; Catherine Legrand; Elin Lindehoff; Jarone Pinhassi; Sonya Dyhrman; Linnéuniversitetet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Interactions; phytoplankton; microalgae; bacteria; communities; aquatic; diversity; functions; structure; species-specific; microbiome; core microbiome; response diversity; resilience; resource partitioning; competition; coexistence; amplicon sequencing; metatranscriptome; Akvatisk ekologi; Aquatic Ecology; Mikrobiologi; Microbiology;

   Sammanfattning : Microorganisms, such as phytoplankton and bacteria, make up ≈70% of aquatic biomass and contribute 50-85% of the oxygen in Earth’s atmosphere. The microbial loop concept and the discovery of the large diversity in microbial communities acknowledge that biotic interactions between microorganisms in addition to resource competition enable the recycling of energy and nutrients in aquatic food webs. LÄS MER

5. 4. Too close for comfort : The role of Contact-Dependent growth Inhibition (CDI) in interbacterial competition and cooperation

   Författare :Marcus Wäneskog; Sanna Koskiniemi; Paul Rainey; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; bacterial interactions; cell-cell binding; contact-dependent growth inhibition; CDI; CdiB; CdiA; CdiI; outer-membrane receptor; BamA; OmpC; OmpF; extracellular toxin delivery; Toxin-Antitoxin; TA-system; persister cells; stress tolerance; stress response; rpoS; rssB; quorum sensing; multicellular behavior; Biologi med inriktning mot mikrobiologi; Biology with specialization in Microbiology;

   Sammanfattning : Contact-Dependent growth inhibition (CDI) was discovered in 2005 in the E. coli isolate EC93. Since then our knowledge of CDI systems and their impact on bacterial communities have increased exponentially. LÄS MER

7. 5. Assembly Mechanisms in Aquatic Bacterial Communities : The Role of Disturbances, Dispersal and History

   Författare :Mercè Berga Quintana; Silke Langenheder; Eva Lindström; Örjan Östman; Mathew Leibold; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; diversity; community composition; metacommunity;

   Sammanfattning : Environmental conditions, biotic interactions, dispersal and history have been suggested to be important processes influencing the spatial distribution of organisms and thus to affect community assembly. Understanding how these processes influence community assembly is important, particularly because community diversity and composition are suggested to be relevant for ecosystem functioning. LÄS MER