Mori Nicola, Cargnus Elena, Martini Marta, Pavan Francesco
Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy.
Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Via delle Scienze 206, 3100 Udine, Italy.
Insects. 2020 Sep 7;11(9):606. doi: 10.3390/insects11090606.
is the vector of " Phytoplasma (. P.) solani," the causal agent of grapevine yellows Bois noir (BN). The relationships among the planthopper, its main herbaceous hosts as phytoplasma reservoirs ( and ) and BN spreading were studied in northern Italy. In two areas the relationship between host plants and the phenology and survival of planthopper adults was investigated in potted plants and in field conditions. Moreover, ecology, newly symptomatic grapevine occurrence and ". P. solani" -types' presence were studied in two vineyards (2014-2019). An earlier occurrence of adults on than and better adult survival of the originating host were observed. When was prevalent, the vector occurred almost exclusively along the ditch outside the vineyard. amount varied widely from year to year and nymphal mortality due to late frosts was supposed. In one vineyard, the amount of newly symptomatic grapevines was significantly correlated with vector abundance in the previous year. The ". P. solani" -type was influenced by vector population levels on the two hosts. Since the abundance of populations on the two hosts influences BN epidemiology and dynamics and the ". P. solani" -type, this must be considered in BN control strategies.
是葡萄黄化病黑木病（BN）的病原体“茄植原体（.P.）”的传播媒介。在意大利北部研究了这种叶蝉与其作为植原体宿主库的主要草本寄主（和）以及BN传播之间的关系。在两个地区，在盆栽植物和田间条件下研究了寄主植物与叶蝉成虫物候和存活之间的关系。此外，在两个葡萄园（2014 - 2019年）研究了生态学、新出现症状的葡萄树发生情况以及“茄植原体”类型的存在情况。观察到叶蝉成虫在 上的出现早于 在 上，且起源寄主上的成虫存活率更高。当 普遍存在时，传播媒介几乎只出现在葡萄园外的沟渠沿线。 数量年际变化很大，推测若虫因晚霜而死亡。在一个葡萄园，新出现症状的葡萄树数量与上一年的传播媒介数量显著相关。“茄植原体”类型受两个寄主上传播媒介种群数量水平的影响。由于两个寄主上 种群的数量影响BN的流行病学和动态以及“茄植原体”类型，因此在BN控制策略中必须考虑这一点。
