Nikki D. Charlton

Population Genetic Diversity and Structure of Venturia carpophila on Peach and Almond in the United States

Clive Howard Bock, Chunxian Chen, Nikki D. Charlton, Guido Schnabel et autres

Scab of peach and almond is caused by Venturia carpophila, but little is known regarding the population genetics of the pathogen, which aids in understanding the epidemiology of the disease and guiding its management. Isolates (735) of V. carpophila were sampled from …

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Factors affecting development of pseudothecia produced by Venturia effusa in vitro

Nikki D. Charlton, Clive Howard Bock, Debbie L. Boykin, Carolyn A. Young

Abstract Pecan scab, caused by Venturia effusa , is the most destructive disease of pecan in the south‐eastern United States. The fungus was assumed to perpetuate solely through asexually produced conidia. Yet the identification of heterothallic mating type idiomorphs has led to …

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Population Genetic Characteristics and Mating Type Frequency of Venturia effusa from Pecan in South America

Clive Howard Bock, Enrique Alberto Frusso, Roberto Zoppolo, E. Ortiz et autres

Scab, caused by the plant-pathogenic fungus Venturia effusa, is a major disease of pecan in South America, resulting in loss of quantity and quality of nut yield. Characteristics of the populations of V. effusa in South America are unknown. We used microsatellites …

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Population genetic diversity and structure of the pecan scab pathogen, Venturia effusa , on cv. Desirable and native seedlings, and the impact of marker number

Clive Howard Bock, Nikki D. Charlton, Jason B. Shiller, Jennifer J. Randall et autres

Abstract Scab ( Venturia effusa ) is the major cause of economic loss in pecan in the south‐eastern USA. We explored population genetic diversity and structure among orchards of cv. Desirable and native seedlings, and within‐orchard variability among trees of all cultivars …

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Mating Type Idiomorphs, Heterothallism, and High Genetic Diversity in Venturia carpophila , Cause of Peach Scab

Clive Howard Bock, Carolyn A. Young, Min-Ling Zhang, Chunxian Chen et autres

Scab (caused by Venturia carpophila) is a major disease affecting peach in the eastern United States. The aims of the study were to characterize the mating-type loci in V. carpophila, determine whether they are in equilibrium, and assess the population genetic diversity …

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First description of the sexual stage of Venturia effusa , causal agent of pecan scab

Nikki D. Charlton, Mihwa Yi, Clive Howard Bock, Min-Ling Zhang et autres

Pecan scab, caused by Venturia effusa, is the most prevalent disease of pecan in the southeastern United States. Recent characterization of the mating type (MAT) distribution of V. effusa revealed that the MAT idiomorphs are in equilibrium at various spatial scales, indicative …

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Simulated folivory increases vertical transmission of fungal endophytes that deter herbivores and alter tolerance to herbivory in Poa autumnalis

Pedro E. Gundel, Prudence Sun, Nikki D. Charlton, Carolyn A. Young et autres

BACKGROUND AND AIMS: The processes that maintain variation in the prevalence of symbioses within host populations are not well understood. While the fitness benefits of symbiosis have clearly been shown to drive changes in symbiont prevalence, the rate of transmission has been …

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Chromosome-Level Reference Genome of Venturia effusa , Causative Agent of Pecan Scab

David J. Winter, Nikki D. Charlton, Nick Krom, Jason B. Shiller et autres

Pecan scab, caused by Venturia effusa, is a devastating disease of pecan (Carya illinoinensis), which results in economic losses on susceptible cultivars throughout the southeastern United States. To enhance our understanding of pathogenicity in V. effusa, we have generated a complete telomere-to-telomere …

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First description of the sexual stage of Venturia effusa , causal agent of pecan scab

Nikki D. Charlton, Mihwa Yi, Clive Howard Bock, Min-Ling Zhang et autres

ABSTRACT Venturia effusa , cause of pecan scab, is the most prevalent disease of pecan in the southeastern USA; epidemics of the disease regularly result in economic losses to the pecan industry. Recent characterization of the mating type distribution revealed the frequency …

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Chromosome-level genome reference of Venturia effusa , causative agent of pecan scab

David J. Winter, Nikki D. Charlton, Nick Krom, Jason B. Shiller et autres

Abstract Pecan scab, caused by Venturia effusa , is a devastating disease of pecan ( Carya illinoinensis ), which results in economic losses on susceptible cultivars throughout the southeastern U.S. To enhance our understanding of pathogenicity in V. effusa , we have …

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Leaf endophytes mediate fertilizer effects on plant yield and traits in northern oat grass (Trisetum spicatum)

Heather Buckley, Carolyn A. Young, Nikki D. Charlton, Will Q. Hendricks et autres

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Variation Among Orchardgrass (Dactylis glomerata) Germplasm for Choke Prevalence Caused by Epichloë typhina

Bradley Shaun Bushman, Devesh Pratap Singh, Robin Lamp, Carolyn A. Young et autres

Orchardgrass, or cocksfoot (Dactylis glomerata L.), is a cool-season forage grass susceptible to the choke disease caused by Epichloë typhina. Choke has been reported in orchardgrass seed production fields across the temperate regions of the world, but fungicides have not been efficacious …

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