Bradyrhizobium japonicum mutants defective in cyclic beta-glucan synthesisshow enhanced sensitivity to plant defense responses

Authors
Mithofer, A Bhagwat, AA Keister, DL Ebel, J
Citation
A. Mithofer et al., Bradyrhizobium japonicum mutants defective in cyclic beta-glucan synthesisshow enhanced sensitivity to plant defense responses, Z NATURFO C, 56(7-8), 2001, pp. 581-584
Citations number
15
Categorie Soggetti
Biochemistry & Biophysics
Journal title
ZEITSCHRIFT FUR NATURFORSCHUNG C-A JOURNAL OF BIOSCIENCES
ISSN journal
09395075 → ACNP
Volume
56
Issue
7-8
Year of publication
2001
Pages
581 - 584
Database
ISI
SICI code
0939-5075(200107/08)56:7-8<581:BJMDIC>2.0.ZU;2-Q
Abstract
Susceptibility of the nitrogen-fixing soybean symbiont Bradyrhizobium japon icum to inducible plant defense metabolites such as phytoalexin and H2O2, w as investigated. On the wild-type strain USDA 110 the soybean phytoalexin, glyceollin, showed bacteriostatic activity. Viable bacteria isolated from i ntact nodules were adapted to glyceollin. H2O2 in physiological concentrati ons did not affect wild-type bacteria. B. japonicum mutants defective in th e biosynthesis of cyclic beta-(1 -->3)-(1 -->6)-glucans showed higher susce ptibility to both phytoalexin and H2O2.