Photorhabdus Luminescens: Virulent Properties and Agricultural Applications
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چکیده
منابع مشابه
Toxins and Secretion Systems of Photorhabdus luminescens
Photorhabdus luminescens is a nematode-symbiotic, gram negative, bioluminescent bacterium, belonging to the family of Enterobacteriaceae. Recent studies show the importance of this bacterium as an alternative source of insecticides, as well as an emerging human pathogen. Various toxins have been identified and characterized in this bacterium. These toxins are classified into four major groups: ...
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In this work, we report the draft genome sequence of Photorhabdus luminescens strain HIM3, a symbiotic bacterium associated with the entomopathogenic nematode Heterorhabditis indica MOR03, isolated from soil sugarcane in Yautepec, Morelos, Mexico. These bacteria have a G+C content of 42.6% and genome size of 5.47 Mb.
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An oxygen electrode inserted into a dead Munducu sex~u larva infected with Heterorhabditis nematodes carrying the bacterium Photorhabdus luminescens showed barely detectable levels of oxygen in a 1 to 2 mm zone below the cuticle, and virtual anaerobiosis deeper in the carcass. This observation indicates that the bacteria in this habitat, where they are actively growing, are probably carrying ou...
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Bacterial virulence is an integrative process that may involve quorum sensing. In this work, we compared by global expression profiling the wild-type entomopathogenic Photorhabdus luminescens subsp. laumondii TT01 to a luxS-deficient mutant unable to synthesize the type 2 quorum-sensing inducer AI-2. AI-2 was shown to regulate more than 300 targets involved in most compartments and metabolic pa...
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Primary and secondary forms of Photorhabdus luminescens Hm and Xenorhabdus nematophilus N2-4 were grown at 18 and 28(deg)C for 24 to 96 h, and we made determinations of the fatty-acid compositions of total lipids and of the fluidity measured by 5-doxyl-stearic acid embedded in liposomes made from total lipids. The levels of the unsaturated fatty acids 16:1 and 18:1 (those with chain lengths of ...
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ژورنال
عنوان ژورنال: American Journal of Agriculture and Forestry
سال: 2015
ISSN: 2330-8583
DOI: 10.11648/j.ajaf.20150305.12