Production of Tsr factor by Rhizobium meliloti

V. Jain, N. Garg, H. S. Nainawatee

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)164-168
Number of pages5
JournalFolia Microbiologica
Issue number2
StatePublished - Apr 1991
Externally publishedYes

ASJC Scopus subject areas

  • Microbiology


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