نتایج جستجو برای: infection process including spore germination

تعداد نتایج: 2542389  

2013
Chloe M. Adams Brian E. Eckenroth Emily E. Putnam Sylvie Doublié Aimee Shen

Spores are the major transmissive form of the nosocomial pathogen Clostridium difficile, a leading cause of healthcare-associated diarrhea worldwide. Successful transmission of C. difficile requires that its hardy, resistant spores germinate into vegetative cells in the gastrointestinal tract. A critical step during this process is the degradation of the spore cortex, a thick layer of peptidogl...

2008
Ashok K. Singh M. B. Pandey Sarita Singh Anil K. Singh U. P. Singh

The alkaloid securinine was assessed against spore germination of some plant pathogenic and saprophytic fungi (Alternaria alternata, Alternaria brassicae, Alternaria brassicicola, Curvularia lunata, Curvularia maculans, Curvularia pallenscens, Colletotrichum musae, Colletotrichum sp., Erysiphe pisi, Helminthosporium echinoclova, Helminthosporium spiciferum, Heterosporium sp.). Spore germination...

Journal: :Journal of Phytopathology 2022

Plant pollens and fungal spores are massively produced in natural habitats large-scaled agricultural areas, the airborne transported biomass can be accumulated on relatively large crop surfaces. A pollen grain contains a specific chemical composition quantity quality, highly varied among plant species. So, could provide species-specific nutrient supply for initial development trap. Thus, this i...

2013
Amber Howerton Manomita Patra Ernesto Abel-Santos

Clostridium difficile infection (CDI) is a leading cause of antibiotic-associated diarrhea, a major nosocomial complication. The infective form of C. difficile is the spore, a dormant and resistant structure that forms under stress. Although spore germination is the first committed step in CDI onset, the temporal and spatial distribution of ingested C. difficile spores is not clearly understood...

2014
Erika Georget Asel Kushman Michael Callanan Edwin Ananta Volker Heinz Alexander Mathys

Bacterial endospores through their strong resistance to both chemical and physical hurdles constitute a risk for food industry. Inactivation strategies are based on thermal and/or chemical treatments but rely on incomplete knowledge of the mechanisms of inactivation. Alternative strategies were suggested to achieve food safety while improving product quality. One of them relies on the successiv...

2017
Matouš Čihák Zdeněk Kameník Klára Šmídová Natalie Bergman Oldřich Benada Olga Kofroňová Kateřina Petříčková Jan Bobek

Spore awakening is a series of actions that starts with purely physical processes and continues via the launching of gene expression and metabolic activities, eventually achieving a vegetative phase of growth. In spore-forming microorganisms, the germination process is controlled by intra- and inter-species communication. However, in the Streptomyces clade, which is capable of developing a plet...

Journal: :Molecular Biology and Evolution 2008
Allyson V. Ritchie Saskia van Es Celine Fouquet Pauline Schaap

Amoebas and other protists commonly encyst when faced with environmental stress. Although little is known of the signaling pathways that mediate encystation, the analogous process of spore formation in dictyostelid social amoebas is better understood. In Dictyostelium discoideum, secreted cyclic AMP (cAMP) mediates the aggregation of starving amoebas and induces the differentiation of prespore ...

Journal: :Journal of bacteriology 2006
Krzysztof Hinc Krzysztofa Nagórska Adam Iwanicki Grzegorz Wegrzyn Simone J Séror Michal Obuchowski

The ability of Bacillus subtilis to form spores is a strategy for survival under unfavorable environmental conditions. It is equally crucial to break spore dormancy and return to vegetative growth at the appropriate time. Here we present data showing that the PrpE phosphatase is involved in the control of expression of genes coding for GerA receptors, which are necessary for L-alanine-induced s...

Journal: :Journal of bacteriology 2002
Yoshio Kimura Yukako Mishima Hiromi Nakano Kaoru Takegawa

An adenylyl cyclase gene (cyaA) present upstream of an osmosensor protein gene (mokA) was isolated from Myxococcus xanthus. cyaA encoded a polypeptide of 843 amino acids with a predicted molecular mass of 91,187 Da. The predicted cyaA gene product had structural similarity to the receptor-type adenylyl cyclases that are composed of an amino-terminal sensor domain and a carboxy-terminal catalyti...

Journal: :Development 1992
A Chandrasekhar H L Ennis D R Soll

When developing cultures of Dictyostelium discoideum are disaggregated at any time prior to cell wall formation and challenged to reinitiate development, amoebae will progress through the original sequence of morphogenetic stages, but the second time through they will do so in roughly one-tenth the original time, a process known as 'rapid recapitulation'. However, if disaggregated cells are sus...

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