Temporal and Spatial Analysis of Potato Psyllid Haplotypes in the United States

Swisher, Kylie D.; Munyaneza, Joseph E.

doi:10.1603/en12261

Cited by 38 publications

(33 citation statements)

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“…As it is known that susceptibility varies among potato varieties (Munyaneza et al 2011), this is not an unexpected Þnding. However, as TPPs can be migratory, populations sometimes expand after invading a Þeld , Swisher et al 2013, and planting time can inßuence disease severity , Munyaneza et al 2012. Additionally, Davis et al (2012) have demonstrated that settling behavior is inßuenced by both CLP infection and time since infection, while also indicating that ßowering phenology is correlated with TPP population performance.…”

Section: Discussionmentioning

confidence: 99%

The Influence of Maturity and Variety of Potato Plants on Oviposition and Probing ofBactericera cockerelli(Hemiptera: Triozidae)

Prager¹,

Lewis

Michels

et al. 2014

Environ Entomol

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The ecological theory on host plant choice by herbivores suggests that mothers should choose plants that will maximize their offspring's success. In annual host plants, physiology (and therefore host suitability) is sometimes influenced by maturity and growth stage, which may influence female choice. Potato plants were grown under greenhouse conditions and used in choice and no-choice bioassays to determine the effect of plant maturity and variety on oviposition and number of stylet sheaths (which approximate stylet insertions) by tomato/potato psyllids. No-choice bioassays suggested that maturity (time since planting) did not influence oviposition behavior, but oviposition varied significantly among potato plant varieties. There was a significant effect of both maturity and variety on the number of stylet sheaths, which peak toward the middle of the growing season. We also examined tomato/potato psyllid responses to plants grown in a commercial field and again found no effect on oviposition but differences in stylet sheaths. The results suggest that differential susceptibility to zebra chip disease may be associated with unequal feeding rates. Future studies should examine whether the maturity of plants influences larval fitness. Finally, potato variety has an influence on both oviposition and "probing," and has implications for management strategies and the development of resistant potato varieties.

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Section: Discussionmentioning

confidence: 99%

The Influence of Maturity and Variety of Potato Plants on Oviposition and Probing ofBactericera cockerelli(Hemiptera: Triozidae)

Prager¹,

Lewis

Michels

et al. 2014

Environ Entomol

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“…Current research efforts seek to better understand the interactions among Liberibacter, the potato psyllid, and host plants. These interactions include variations among potato varieties in their resistance or tolerance to the disease, variations among psyllid populations and life-stages in their ability to acquire and transmit Liberibacter, and how geographic distributions influence overwintering of Liberibacter and psyllids (Munyaneza 2012, Cooper et al 2013, Swisher et al 2013a, 2013b). An important application of understanding these interactions is the ability to accurately diagnose Liberibacter infection in plants in the absence of visual symptoms.…”

Section: Introductionmentioning

confidence: 99%

Relationship Between Plant Vascular Architecture and Within-Plant Distribution of ‘Candidatus Liberibacter solanacearum’ in Potato

Cooper¹,

Alcala

Bárcenas

2014

Am. J. Potato Res.

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'Candidatus Liberibacter solanacearum' is an important pathogen of Solanaceous crops that causes zebra chip disease of potato. This pathogen is transmitted among plants by the potato psyllid Bactericera cockerelli. Within-plant spatial variability in Liberibacter infection impedes the ability to detect the bacterium before the onset of visible symptoms. The goal of our study was to test whether vascular architecture of potato explains the uneven distribution of Liberibacter after inoculation of leaves. The movement of rhodamine B among leaves was used to identify vascular connectivity among leaves. Three weeks after inoculating a single leaf with Liberibacter, the pathogen infected significantly more leaflets that had direct vascular connectivity with the inoculated leaf than leaflets with minimal connectivity. In a separate study, significantly more psyllids confined to whole leaves with direct vascular connectivity to a Liberibacter-infected leaf acquired the pathogen than did psyllids confined to leaves with indirect or partial connectivity to the infected leaf. Using fluorescence in situ hybridization, the pathogen was observed in the inner and outer phloem above and below the export leaf, respectively, corresponding with passive movement of Liberibacter in the phloem. Results of this study indicate that the distribution of Liberibacter in potato is at least partly limited by vascular architecture. This knowledge should improve the design of sampling methods to detect Liberibacter in asymptomatic plants.Resumen 'Candidatus Liberibacter solanacearum' es un patógeno importante en cultivos de solanáceas que causa la enfermedad de "zebra chip" de la papa. Este patógeno se transmite entre las plantas por el psílido de la papa Bactericera cockerelli. La variabilidad espacial dentro de la planta en la infección por Liberibacter impide la habilidad para detectar la bacteria antes del establecimiento de síntomas visibles. La meta de nuestro estudio fue probar si la arquitectura vascular de la papa explica la distribución desuniforme de Liberibacter después de la inoculación de las hojas. Se usó el movimiento de rodamina B entre hojas para identificar la conectividad vascular entre hojas. Tres semanas después de haber inoculado una hoja con Liberibacter, el patógeno infectó significativamente más folíolos que tuvieron conectividad vascular directa con la hoja inoculada, que folíolos con conectividad mínima. En un estudio aparte, significativamente más psílidos confinados a hojas completas con conectividad vascular directa a una hoja infectada con Liberibacter adquirieron el patógeno, que los confinados a hojas con conectividad indirecta o parcial con la hoja infectada. Mediante el uso de hibridación de inflorescencia in situ, se observó al patógeno en el floema interno y externo, arriba y debajo de la hoja exportadora, respectivamente, lo que correspondió con movimiento pasivo de Liberibacter en el floema. Los resultados de este estudio indican que la distribución de Liberibacter en papa es por lo menos parci...

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“…Population mapping studies have identified three distinct potato psyllid haplotypes within the United States that are associated with three different geographical regions: Central, Western, and Northwestern ( Liu et al 2006 ; Swisher et al 2012 , 2013 ). Psyllids of the Central haplotype have been identified across a large geographical range, spanning from eastern Mexico up to Texas, Kansas, Colorado, Nebraska, and Wyoming, all the way to North Dakota ( Swisher et al 2012 , 2013 ).…”

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confidence: 99%

“…Psyllids of the Central haplotype have been identified across a large geographical range, spanning from eastern Mexico up to Texas, Kansas, Colorado, Nebraska, and Wyoming, all the way to North Dakota ( Swisher et al 2012 , 2013 ). Likewise, psyllids of the Western haplotype were identified across a large geographical range from California and New Mexico up to Washington, Oregon, and Idaho ( Swisher et al 2012 , 2013 ). To date, the Northwestern haplotype has only been identified in the Northwestern states of Washington, Oregon, and Idaho ( Swisher et al 2012 , 2013 ; data not shown).…”

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confidence: 99%

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Identification of a Fourth Haplotype of Bactericera cockerelli (Hemiptera: Triozidae) in the United States

Swisher

Henne²

2014

Journal of Insect Science

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The potato psyllid, Bactericera cockerelli (Sulc) (Hemiptera: Triozidae), is a pest of potato and other solanaceous crops in North and Central America and New Zealand. Previous genotyping studies have demonstrated the presence of three different haplotypes of B. cockerelli in the United States corresponding to three geographical regions: Central, Western, and Northwestern. These studies utilized psyllids collected in the western and central United States between 1998 and 2011. In an effort to further genotype potato psyllids collected in the 2012 growing season, a fourth B. cockerelli haplotype was discovered corresponding to the Southwestern United States geographical region. High-resolution melting analyses identified this new haplotype using an amplicon generated from a portion of the B. cockerelli mitochondrial cytochrome coxidase subunit I gene. Sequencing of this gene, as well as use of a restriction enzyme assay, confirmed the identification of the novel B. cockerelli haplotype in the United States.

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Temporal and Spatial Analysis of Potato Psyllid Haplotypes in the United States

Cited by 38 publications

References 35 publications

The Influence of Maturity and Variety of Potato Plants on Oviposition and Probing ofBactericera cockerelli(Hemiptera: Triozidae)

The Influence of Maturity and Variety of Potato Plants on Oviposition and Probing ofBactericera cockerelli(Hemiptera: Triozidae)

Relationship Between Plant Vascular Architecture and Within-Plant Distribution of ‘Candidatus Liberibacter solanacearum’ in Potato

Identification of a Fourth Haplotype of Bactericera cockerelli (Hemiptera: Triozidae) in the United States

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