title: Production of Tsr factor by Rhizobium meliloti.
abstract: The root exudates of alfalfa (Medicago sativa) and mungbean (Vigna radiata) induced the Tsr (thick and short roots) factor production in Rhizobium meliloti. The factor caused a 30-40% reduction of root length in alfalfa seedlings. Pea root exudate had no Tsr induction activity. The flavonoid naringenin could replace the roots in inducing Tsr production. Naringenin-induced Tsr factor caused 70% shortening of main roots. The Tsr inducing property of naringenin was specific since quercetin and syringaldehyde had no such effect.
authors.affiliation: Department of Chemistry and Biochemistry, Haryana Agricultural University, Hisar, India.
authors.forename: V
authors.initials: V
authors.lastname: Jain
authors.forename: N
authors.initials: N
authors.lastname: Garg
authors.forename: H S
authors.initials: HS
authors.lastname: Nainawatee
mesh_terms: D001426:Bacterial Proteins / Q000096:biosynthesis*; D044950:Flavanones; D005419:Flavonoids / Q000494:pharmacology; D000455:Medicago sativa / Q000378:metabolism / Q000382:microbiology; D008565:Membrane Proteins / Q000096:biosynthesis*; D016962:Sinorhizobium meliloti / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*
chemical_list: D001426:Bacterial Proteins; D044950:Flavanones; D005419:Flavonoids; D008565:Membrane Proteins; C057635:Tsr protein, Bacteria; C005273:naringenin