2013
DOI: 10.1038/ismej.2013.164
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In and out: an analysis of epibiotic vs periplasmic bacterial predators

Abstract: Bdellovibrio and like organisms (BALO) are obligate predators of Gram-negative bacteria, belonging to the a-and d-proteobacteria. BALO prey using either a periplasmic or an epibiotic predatory strategy, but the genetic background underlying these phenotypes is not known. Here we compare the epibiotic Bdellovibrio exovorus and Micavibrio aeruginosavorus to the periplasmic B. bacteriovorus and Bacteriovorax marinus. Electron microscopy showed that M. aeruginosavorus, but not B. exovorus, can attach to prey cells… Show more

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Cited by 68 publications
(74 citation statements)
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“…Bdellovibrio bacteriovorus predation requires the type IV pili (693), which may play an important role in initial attachment to a prey bacterium in aquatic environments and possibly in movement for locating prey bacteria within the matrix of biofilms (694). BALOs are phylogenetically and environmentally diverse in the ocean (695)(696)(697), and they display niche separation, different predation strategies, and prey selectivity such that some BALOs are more specific for particular prey organisms, while others are more prey generic (696,(698)(699)(700). Some other bacteria of the Proteobacteria (including Alpha-, Beta-, Gamma-, and Deltaproteobacteria), Actinobacteria, Bacteroidetes, and Chloroflexi lineages are also predatory (701).…”
Section: Deadly Competition: Chemical Agents Predation and Specialimentioning
confidence: 99%
“…Bdellovibrio bacteriovorus predation requires the type IV pili (693), which may play an important role in initial attachment to a prey bacterium in aquatic environments and possibly in movement for locating prey bacteria within the matrix of biofilms (694). BALOs are phylogenetically and environmentally diverse in the ocean (695)(696)(697), and they display niche separation, different predation strategies, and prey selectivity such that some BALOs are more specific for particular prey organisms, while others are more prey generic (696,(698)(699)(700). Some other bacteria of the Proteobacteria (including Alpha-, Beta-, Gamma-, and Deltaproteobacteria), Actinobacteria, Bacteroidetes, and Chloroflexi lineages are also predatory (701).…”
Section: Deadly Competition: Chemical Agents Predation and Specialimentioning
confidence: 99%
“…In the past few years, the introduction of new genetic tools and a better understanding of the genetic makeup of predatory bacteria have helped to move the field forward (2,3). Furthermore, increasing antibiotic resistance among Gram-negative pathogens has evoked new interest in the potential use of predatory bacteria for therapeutics (4,5).…”
mentioning
confidence: 99%
“…Il varie de 5 à 7 en moyenne dans E. coli jusqu'à 30 dans Aquaspirillum serpens et plus dans des E. coli coenocitiques (multinucléés) de 30 à 100 μm de longueur. La durée du cycle de vie, de l'attachement du prédateur à la proie jusqu'à la libération de nouvelles cellules en PA, dure entre 2,5 et 4 h. Durant leur croissance, les BALO sont en mesure de synthétiser tous les nucléotides mais comme de nombreux symbiontes et pathogènes bactériens, ils ne peuvent pas synthétiser et dégrader certains acides aminés, ainsi que la riboflavine [23]. Pour des raisons encore inconnues, chez la plupart des BALO et chez des pré-dateurs bactériens non-obligatoires, la production des isoprénoïdes 9 utilise la voie de biosynthèse du mévalo-nate et non la voie du méthylérythritol phosphate commune à la grande majorité des bactéries [24].…”
Section: Phase De Croissance Et De Réplicationunclassified