Growth Dynamics ofXanthomonas campestrispv.oryzaein Leaves of Rice Differential Cultivars

P. A. Barton-Willis
1989 Phytopathology  
Barton-Willis, P. A., Roberts, P. D., Guo, A., and Leach, J. E. 1989. Growth dynamics of Xanthomonas campestris pv. oryzae in leaves of rice differential cultivars. Phytopathology 79:573-578. Bacterial multiplication and spread were monitored in race-specific inter-Symptoms were not observed in advance of bacteria. Lesion lengths, in actions of Xanthomonas campestris pv. oryzae and rice (Oryza sativa). general, were positively correlated with bacterial numbers. When leaves Bacterial numbers in
more » ... cterial numbers in compatible and incompatible interactions increased were inoculated with bacterial mixtures (1:1 of race I or 6 [compatible] to equally until levels reached 107-108 colony-forming units/leaf. Thereafter, race 2 [incompatible]), the growth rate of race 2 isolates was severely the bacterial growth rates in incompatible interactions slowed in restrictedcomparedwiththatofthecontrol(race2alone). Thesameeffects races of X. c. oryzae, one compatible and one incompatible) on X. c. oryzae and lesion development in different rice cultivars also both bacterial multiplication and the disease reaction also are not are presented. clear. The expected phenotype resulting from such inoculations is incompatible, if resistance is assumed to be physiologically
doi:10.1094/phyto-79-573 fatcat:b4kmth5a75etjpdry5ails656u