Monitoring virulence of Bremia lactucae as a breeding tool against lettuce downy mildew from south and southwest Brazilian regions. - Franco, C. A.; Marin, M. V.; Silva, E. H. C.; Soares, R. S.; Candido, W. S.; Souza, L. N.; Caprio, C. H.; Vidal, R. L.; Panizzi, R. C.; Braz, L. T. (European Journal of Plant Pathology, 2021)