The spread of ‘bois noir’ disease in grapevine was monitored in three organic vineyards in Tuscany (central Italy). Annual incidence, infection and recovery rates were calculated to describe changes in the epidemic with time. In general symptomatic plants showed the phenomenon of recovery in a relatively short time, meanwhile the infection rate decreased rapidly after the second year of assessments. The temporal dinamics of infection and recovery rates were satisfactorily fitted to a power and polynomial models, respectively. Survey on the herbaceous vineyard weeds allow to identify several species infected with 16SrXII phytoplasmas; in some of these samples polymorphisms in 16Sr and tuf genes were detected.
Marchi G., N. Contaldo, P. Braccini, S. Paltrinieri, D. Rizzo, T. Cinelli, et al. (2011). Epidemiology of ‘bois noir’ disease and molecular variability of associated phytoplasmas in organic vineyards in Tuscany (Italy). BULLETIN OF INSECTOLOGY, 64 supplement, S193-S194.
Epidemiology of ‘bois noir’ disease and molecular variability of associated phytoplasmas in organic vineyards in Tuscany (Italy)
CONTALDO, NICOLETTA;PALTRINIERI, SAMANTA;BERTACCINI, ASSUNTA
2011
Abstract
The spread of ‘bois noir’ disease in grapevine was monitored in three organic vineyards in Tuscany (central Italy). Annual incidence, infection and recovery rates were calculated to describe changes in the epidemic with time. In general symptomatic plants showed the phenomenon of recovery in a relatively short time, meanwhile the infection rate decreased rapidly after the second year of assessments. The temporal dinamics of infection and recovery rates were satisfactorily fitted to a power and polynomial models, respectively. Survey on the herbaceous vineyard weeds allow to identify several species infected with 16SrXII phytoplasmas; in some of these samples polymorphisms in 16Sr and tuf genes were detected.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
