Data from:Insight into the durability of plant resistance to aphids from a demo-genetic study of Aphis gossypii in melon crops

Resistance breakdown has been observed following the deployment of plant cultivars resistant to pests. Assessing the durability of a resistance requires long-term experiments at least at a regional scale. We collected such data for melon resistance conferred by the Vat gene cluster to melon aphids. We examined landscape-level populations of Aphis gossypii collected in 2004–2015, from melon-producing regions with and without the deployment of Vat resistance and with different climates. We conducted demo-genetic analyses of the aphid populations on Vat and non-Vat plants during the cropping seasons. The Vat resistance decreased the density of aphid populations in all areas and changed the genetic structure and composition of these populations. Two bottlenecks were identified in the dynamics of adapted clones, due to the low levels of production of dispersal morphs and winter extinction. Our results suggest that (i) Vat resistance will not be durable in the Lesser Antilles, where no bottleneck affected the dynamics of adapted clones, (ii) Vat resistance will be durable in south-west France, where both bottlenecks affected the dynamics of adapted clones and (iii) Vat resistance will be less durable in south-east France, where only one of the two bottlenecks was observed.

抗虫植物品种推广后，已观测到抗性突破（Resistance breakdown）现象。评估抗性的持久性需开展至少区域尺度的长期试验。本研究收集了由Vat基因簇（Vat gene cluster）赋予的甜瓜抗棉蚜（Aphis gossypii）相关数据。我们对2004-2015年间，采自不同气候类型、存在或不存在Vat抗性推广的甜瓜种植区的棉蚜景观尺度种群展开了分析。在作物生长季内，针对Vat和非Vat甜瓜植株上的蚜虫种群开展了种群-遗传联合分析。结果显示，Vat抗性可降低所有研究区域内的蚜虫种群密度，并改变这些种群的遗传结构与组成。在适应性克隆的动态过程中，存在两类瓶颈效应：一是扩散型个体的产生量偏低，二是种群冬季消亡。我们的研究结果表明：(i) 在小安的列斯群岛（Lesser Antilles），无瓶颈效应影响适应性克隆动态，因此Vat抗性将不具备持久性；(ii) 在法国西南部，两类瓶颈效应均对适应性克隆动态产生影响，Vat抗性将具备持久性；(iii) 在法国东南部，仅存在两类瓶颈效应中的一种，因此Vat抗性的持久性相对较弱。