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Bacterial ecology of abattoir wastewater treated by an anaerobic digestor BJM
Jabari,Linda; Gannoun,Hana; Khelifi,Eltaief; Cayol,Jean-Luc; Godon,Jean-Jacques; Hamdi,Moktar; Fardeau,Marie-Laure.
Abstract Wastewater from an anaerobic treatment plant at a slaughterhouse was analysed to determine the bacterial biodiversity present. Molecular analysis of the anaerobic sludge obtained from the treatment plant showed significant diversity, as 27 different phyla were identified. Firmicutes, Proteobacteria, Bacteroidetes, Thermotogae, Euryarchaeota (methanogens), and msbl6 (candidate division) were the dominant phyla of the anaerobic treatment plant and represented 21.7%, 18.5%, 11.5%, 9.4%, 8.9%, and 8.8% of the total bacteria identified, respectively. The dominant bacteria isolated were Clostridium, Bacteroides, Desulfobulbus, Desulfomicrobium, Desulfovibrio and Desulfotomaculum. Our results revealed the presence of new species, genera and families of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacterial ecology; Biodiversity; Bacterial culture; SSCP; PCR.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000100073
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Carbapenem stewardship: positive impact on hospital ecology BJID
Lima,Ana Lucia Lei Munhoz; Oliveira,Priscila Rosalba Domingos de; Paula,Adriana Pereira de; Dal-Paz,Karine; Almeida Jr,João Nóbrega de; Félix,Cássia da Silva; Rossi,Flávia.
INTRODUCTION: Excessive group 2 carbapenem use may result in decreased bacterial susceptibility. OBJECTIVE: We evaluated the impact of a carbapenem stewardship program, restricting imipenem and meropenem use. METHODS: Ertapenem was mandated for ESBL-producing Enterobacteriaceae infections in the absence of non-fermenting Gram-negative bacilli (GNB) from April 2006 to March 2008. Group 2 carbapenems were restricted for use against GNB infections susceptible only to carbapenems and suspected GNB infections in unstable patients. Cumulative susceptibility tests were done for nosocomial pathogens before and after restriction using Clinical and Laboratory Standards Institute (CLSI) guide-lines.Vitek System or conventional identification methods were performed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbapenems; Drug resistance; Bacterial ecology.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702011000100001
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Genetic diversity and population densities of endophytic Bacillus spp. in yam plants Bragantia
Souza,Jorge Teodoro de; Santos,Ana Cláudia Oliveira Souza; Monteiro,Fernando Pereira; Batista,Mariah Rodrigues; Santos,Patrícia Oliveira dos; Carvalho,Larissa Ferreira; Corrêa,Elida Barbosa.
ABSTRACT This study was conducted as a first step in exploiting endophytic bacteria to improve yam production. Little information is available on population densities and genetic diversity of endophytic bacteria in yam cultivated in tropical regions. This study demonstrated that higher densities of total endophytic bacteria and Bacillus occur in the interior of roots and decrease as the sampled plant organ departs from soil. Bacillus represents approximately 1% of the total bacterial endophytic population. Random Amplified Polymorphic DNA (RAPD) analyses performed with 88 randomly-selected Bacillus isolates resulted in 28 groups, and sequence analyses of the 16S region of the ribosomal DNA of 24 isolates representing all major RAPD groups revealed that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dioscoriaceae; Genetic diversity; Population densities; Endophytes; Bacterial ecology.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200203
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Patterns of bacteria-host associations suggest different ecological strategies between two reef building cold-water coral species ArchiMer
Meistertzheim, Anne. -leila; Lartaud, Franck; Arnaud-haond, Sophie; Kalenitchenko, Dimitri; Bessalam, Manon; Le Bris, Nadine; Galand, Pierre E..
Cold-water corals (CWC) are main ecosystem engineers of the deep sea, and their reefs constitute hot-spots of biodiversity. However, their ecology remains poorly understood, particularly, the nature of the holobiont formed by corals with their associated bacterial communities. Here, we analysed Madrepora oculata and Lophelia pertusa samples, collected from one location in a Mediterranean canyon in two different seasons (autumn and spring), in order to test for species specificity and temporal stability of the host-bacteria associations. The 16S rRNA sequencing revealed host-specific patterns of bacterial communities associated with L. pertusa and M. oculata, both in terms of community composition and diversity. All analyzed M. oculata polyps exhibited...
Tipo: Text Palavras-chave: Deep-Sea corals; Madrepora oculata; Lophelia pertusa; Bacterial communities; Bacterial ecology; Mediterranean Sea; Microbe-microbe and microbe-host interactions.
Ano: 2016 URL: https://archimer.ifremer.fr/doc/00332/44362/43965.pdf
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