Query: NC_009615:1734752 Parabacteroides distasonis ATCC 8503 chromosome, complete genome Lineage: Parabacteroides distasonis; Parabacteroides; Porphyromonadaceae; Bacteroidales; Bacteroidetes; Bacteria General Information: Normal gastrointestinal bacterium. This group of microbes constitute the most abundant members of the intestinal microflora of mammals. Typically they are symbionts, but they can become opportunistic pathogens in the peritoneal (intra-abdominal) cavity. Breakdown of complex plant polysaccharides such as cellulose and hemicellulose and host-derived polysaccharides such as mucopolysaccharides is aided by the many enzymes these organisms produce. Parabacteroides distasonis is one of the most common fecal isolates, however, this organism is rarely isolated from clinical specimens.
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General Information: This genus consists of plant-specific yellow-pigmented microbes, some of which are economically important phytopathogens that devastate crops such as citrus plants, rice, beans, grape, and cotton. These organisms are almost exclusively found associated with their plant hosts and are not found free in the soil. This species is a major cause of black rot in crucifers, a disease that results in massive tissue degeneration. It also produces an extracellular polysaccharide known as xanthan, which is harvested commercially as a food stabilizing agent for use in industry.