Results 121 to 130 of about 4,090 (169)

Photorhabdus hindustanensis sp. nov., Photorhabdus akhurstii subsp. akhurstii subsp. nov., and Photorhabdus akhurstii subsp. bharatensis subsp. nov., isolated from Heterorhabditis entomopathogenic nematodes

International Journal of Systematic and Evolutionary Microbiology, 2021
Two Gram-negative, rod-shaped bacteria, H1T and H3T, isolated from the digestive tract of Heterorhabditis entomopathogenic nematodes were biochemically and molecularly characterized to determine their taxonomic positions. The 16S rRNA gene sequences of these strains indicate that they belong to the Gammaproteobacteria, to the family
Ricardo A. R. Machado, Vishal S. Somvanshi, Arthur Muller, Jyoti Kushwah, Chaitra G. Bhat   +4 more
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Characterization of Photorhabdus Virulence Cassette as a causative agent in the emerging pathogen Photorhabdus asymbiotica

Science China Life Sciences, 2021
The extracellular contractile injection systems (eCISs) are encoded in the genomes of a large number of bacteria and archaea. We have previously characterized the overall structure of Photorhabdus Virulence Cassette (PVC), a typical member of the eCIS family.
Xia, Wang, Jiaxuan, Cheng, Jiawei, Shen, Liguo, Liu, Ningning, Li, Ning, Gao, Feng, Jiang, Qi, Jin   +7 more
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Genomic islands in Photorhabdus

Trends in Microbiology, 2002
Genomic islands are responsible for unique aspects of bacterial behavior such as symbiosis and pathogenicity. Photorhabdus luminescens is a pathogen of insects that spends part of its lifecycle in symbiosis with a nematode. Here, we describe novel genomic islands from Photorhabdus that are involved in symbiosis and pathogenicity, and discuss the inter ...
Nicholas R, Waterfield, Phillip J, Daborn, Richard H, ffrench-Constant   +2 more
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Photorhabdus toxins: novel biological insecticides

Current Opinion in Microbiology, 1999
Following concerns over the potential for insect resistance to insecticidal Bacillus thuringiensis toxins expressed in transgenic plants, there has been recent interest in novel biological insecticides. Over the past year there has been considerable progress in the cloning of several alternative toxin genes from the bacteria Photorhabdus luminescens ...
R, ffrench-Constant, D, Bowen
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Photorhabdus aballayi sp. nov. and Photorhabdus luminescens subsp. venezuelensis subsp. nov., isolated from Heterorhabditis amazonensis entomopathogenic nematodes

International Journal of Systematic and Evolutionary Microbiology, 2023
Six Gram-negative, rod-shaped bacterial strains isolated fromHeterorhabditis amazonensisentomopathogenic nematodes were characterized to determine their taxonomic position. 16S rRNA andgyrBgene sequences indicate that they belong to the classGammaproteobacteria, familyMorganellaceaeand genusPhotorhabdus, and that some of them are conspecifics.
Ricardo A. R. Machado, Aashaq Hussain Bhat, Carlos Castaneda-Alvarez, Vladimir Půža, Ernesto San-Blas   +4 more
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Virulence modulation in Photorhabdus spp.

Nematology, 2016
Photorhabdusis a bacterium that forms a mutualistic relationship with nematodes (Heterorhabditidae) and is responsible for insect mortality during nematode infection. The purpose of this study was to investigate virulence modulation (vmo) inPhotorhabdusspp. where individual colonies exhibit different levels of virulence.
Dana Blackburn, Travis J. Burk, Byron J. Adams   +2 more
openaire   +1 more source

Insecticidal Toxin Complexes from Photorhabdus luminescens

2016
Various bacterial toxins have potent insecticidal activity. Recently, the Toxin complexes (Tc's) of Photorhabdus and Xenorhabdus species have become an increased focus of current research. These large tripartite toxins with molecular masses >1.4 megadaltons consist of three components termed A, B, and C (or TcA, TcB, and TcC).
Sheets, Joel, Aktories, Klaus
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Two new Subspecies of Photorhabdus luminescens, Isolated from Heterorhabditis bacteriophora (Nematoda: Heterorhabditidae): Photorhabdus luminescens subsp. kayaii subsp. nov. and Photorhabdus luminescens subsp. thracensis subsp. nov.

Systematic and Applied Microbiology, 2004
Bacterial isolates from nematodes from Turkish soil samples were initially characterized by molecular methods and seven members of the genus Photorhabdus identified to the species level, using riboprint analyses and metabolic properties. Strain 07-5 (DSM 15195) was highly related to the type strain of Photorhabdus luminescens subsp.
Selçuk, Hazir, Erko, Stackebrandt, Elke, Lang, Peter, Schumann, Ralf-Udo, Ehlers, Nevin, Keskin   +5 more
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Photorhabdus temperata subsp. stackebrandtii subsp. nov. (Enterobacteriales: Enterobacteriaceae)

Current Microbiology, 2010
The bacterial symbiont of the entomopathogenic nematode Heterorhabditis bacteriophora strain GPS11 was characterized by 16S rRNA gene sequence and physiological traits. The phylogenetic tree built upon 16S rRNA gene sequences clustered the GPS11 bacterial isolate with Photorhabdus temperata strains which have been previously isolated from ...
Ruisheng, An, Parwinder S, Grewal
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Quorum Sensing and LuxR Solos in Photorhabdus

2016
Bacterial communication via small diffusible molecules to mediate group-coordinated behaviour is commonly referred to as 'quorum sensing'. The prototypical quorum sensing system of Gram-negative bacteria consists of a LuxI-type autoinducer synthase that produces acyl-homoserine lactones (AHLs) as signals and a LuxR-type receptor that detects the AHLs ...
Sophie, Brameyer, Ralf, Heermann
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