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Potato Psyllid (Hemiptera: Triozidae) Behavior on Three Potato Genotypes With Tolerance to 'Candidatus Liberibacter solanacearum'.
Journal of Insect Science ( IF 2.1 ) Pub Date : 2020-03-01 , DOI: 10.1093/jisesa/ieaa020
Austin N Fife 1 , Karin Cruzado 2 , Arash Rashed 3 , Richard G Novy 4 , Erik J Wenninger 1
Affiliation  

The potato/tomato psyllid Bactericera cockerelli (Šulc) transmits 'Candidatus Liberibacter solanacearum' (Lso) (also known as 'Candidatus Liberibacter psyllaurous'), the bacterium associated with zebra chip disease (ZC) in potato. When disease incidence is high, ZC causes large economic losses through reductions in potato yield and tuber quality. No commercial potato variety has been found totally resistant to the pathogen. We evaluated host acceptance behaviors using no-choice assays on three breeding clones derived from Solanum chacoense Bitter with putative tolerance to Lso and/or ZC as part of an effort to determine whether the disease tolerance observed in those breeding clones was related to effects on psyllid settling behavior. We also counted the number of eggs laid and nymphs hatched on the different genotypes to observe any differences in reproduction. The potato variety 'Russet Burbank' was used as a susceptible control. Probing frequency and female walking duration were greater on Russet Burbank than the other genotypes. Oviposition did not differ among genotypes. However, female psyllids on two of the Lso-tolerant genotypes displayed reduced fertility 18-24 d after confinement with a male, relative to females on Russet Burbank. These results suggest that although the germplasms display minor abiotic activity on psyllid fertility, tolerance to Lso may be more strongly linked with plant tolerance to the pathogen rather than effects on host acceptance behaviors.

中文翻译:

马铃薯Psyllid(Hemiptera:Triozidae)在三种马铃薯基因型上的行为表现出对'Candidatus Liberibacter solanacearum'的耐受性。

马铃薯/番茄木虱Bactericera cockerelli(Šulc)传播与马铃薯斑马片病(ZC)有关的细菌“ Candidatus Liberibacter solanacearum”(Lso)(也称为“ Candidatus Liberibacter psyllaurous”)。当疾病高发时,ZC通过降低马铃薯产量和块茎质量而造成巨大的经济损失。尚未发现商业马铃薯品种完全对病原体具有抗性。我们使用no-choice分析评估了三个茄属植物的宿主接受行为,其中三个物种均对Lso和/或ZC具有耐受性,这是为了确定在这些育种克隆中观察到的疾病耐受性是否与对木虱的影响有关沉降行为。我们还计算了不同基因型下的卵和若虫孵化的数量,以观察繁殖的差异。马铃薯品种“ Russet Burbank”用作易感对照。Russet Burbank的探查频率和女性行走时间比其他基因型要大。产卵在基因型之间没有差异。然而,与Russet Burbank的雌性相比,与Lso耐受的两个基因型上的雌性木虱在与雄性一起坐牢后18-24 d表现出降低的生育力。这些结果表明,尽管种质对木虱生育能力显示出较小的非生物活性,但对Lso的耐受性可能与植物对病原体的耐受性更强地联系在一起,而不是对宿主的接受行为产生影响。被用作易感对照。Russet Burbank的探查频率和女性行走时间比其他基因型要大。产卵在基因型之间没有差异。然而,与Russet Burbank的雌性相比,与Lso耐受的两个基因型上的雌性木虱在与雄性一起坐牢后18-24 d表现出降低的生育力。这些结果表明,尽管种质对木虱生育能力显示出较小的非生物活性,但对Lso的耐受性可能与植物对病原体的耐受性更强地联系在一起,而不是对宿主的接受行为产生影响。被用作易感对照。Russet Burbank的探查频率和女性行走时间比其他基因型要大。产卵在基因型之间没有差异。然而,与Russet Burbank的雌性相比,与Lso耐受的两个基因型上的雌性木虱在与雄性一起坐牢后18-24 d表现出降低的生育力。这些结果表明,尽管种质对木虱生育能力显示出较小的非生物活性,但对Lso的耐受性可能与植物对病原体的耐受性更强地联系在一起,而不是对宿主的接受行为产生影响。与Russet Burbank上的雌性相比,与Lso耐受的两个基因型上的雌性木虱在与雄性一起坐牢后18-24 d表现出降低的生育力。这些结果表明,尽管种质对木虱生育能力显示出较小的非生物活性,但对Lso的耐受性可能与植物对病原体的耐受性更强地联系在一起,而不是对宿主的接受行为产生影响。与Russet Burbank上的雌性相比,与Lso耐受的两个基因型上的雌性木虱在与雄性一起坐牢后18-24 d表现出降低的生育力。这些结果表明,尽管种质对木虱生育能力显示出较小的非生物活性,但对Lso的耐受性可能与植物对病原体的耐受性更强地联系在一起,而不是对宿主的接受行为产生影响。
更新日期:2020-04-15
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