TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Culture: The strain is detected by hybridizing the rRNA probe comprising a sequence of accatctctggaaccgcg to the 16S rDNA sequence of the strain. (I) is capable of degrading malodorous volatile organic compounds, fatty acids such as butanoic acid, pentanoic acid, hexanoic acid or heptanoic acid, and phenolic compounds such as phenol or para-cresol. (I) further comprises a vector. The vector comprises a selection gene, gene encoding a protein product and a promoter for regulating expression of the protein product. The selection gene is fifty four homolog (ffh). The protein product is encoded by a cellulose gene. The promoter is nifHDK. The vector does not require the presence of antibiotics to maintain the vector in the Rhodobacter PS9 strain. In Rhodobacter PS9 strain, induction of expression of the promoter does not require the addition of an exogenous compound.Preferred Inoculum: The carrier comprises a media.    TECHNOLOGY FOCUS - BIOLOGY - Isolation: Rhodobacter PS9 (RPS9) was isolated from nine anaerobic swine waste lagoons in central Iowa. WIDER DISCLOSURE - Also disclosed as new are:    (1) genetically reconstituting a Rhodobacter PS9 (RPS9) strain; and    (2) a fermentation system and method for producing a protein.    EXAMPLE - Major purple non-photosynthetic bacteria responsible for odor reduction was isolated from nine anaerobic swine waste lagoons in central Iowa, Colorado, Missouri, and North Carolina. The presence of Rhodobacter PS9 (RPS9) was detected using ribosomal RNA oligonucleotides. A specific Rhodobacter PS9 probe was designed and tested for the detection and quantification of RPS9. The probe sequence ACCATCTCTGGAACCGCG hybridized to RPS9 rDNA when probed at 45 degrees C. The technique distinguished RPS9 from closely related photosynthetic bacteria. Bacteriochlorophyll alpha profiles, cell extract absorption spectra, microbial identification system-fatty acid methyl ester (MIDI-FAME) profiles, morphology, and a rRNA profile also provided identifying characteristics of a new species. Physiological, morphologic and genetic characterization identified the bacterial isolates as biotypes of a new strain of Rhodobacter, RPS9. RPS9 was phylogenetically close (98% identity) to Rhodobacter azotoformans, which was isolated from a human waste water treatment system. The isolated strain was able to degrade the major volatile fatty acids and phenolic compounds of waste lagoons. The substrates utilized as reductants for RPS9 photosynthesis differ from other strains of Rhodobacter and reflect the environment in which it was isolated. Bacteriochlorophyll alpha profiles, MIDI-FAME profiles, species specific rRNA hybridization, and cell extract absorption spectra showed RPS9 to be the major photosynthetic bacteria in all the anaerobic swine waste lagoons tested.