A5075138471- Plant Pathogens and Resistance
- Plant Disease Resistance and Genetics
- Plant Pathogens and Fungal Diseases
- Plant responses to elevated CO2
- Potato Plant Research
- Plant Toxicity and Pharmacological Properties
- Botanical Research and Chemistry
- Genetic diversity and population structure
- Chromosomal and Genetic Variations
- Yeasts and Rust Fungi Studies
- Botany and Plant Ecology Studies
Oregon State University
2018-2021
University of Florida
2014-2020
Horticultural Crops Research Laboratory
2018
Various hypotheses have been proposed regarding the origin of plant pathogen Phytophthora cinnamomi. P. cinnamomi is a devastating, highly invasive soilborne associated with epidemics agricultural, horticultural and forest plantations native ecosystems worldwide. We conducted phylogeographic analysis populations this sampled in Asia, Australia, Europe, southern northern Africa, South America, North America. Based on genotyping-by-sequencing, we observed highest genotypic diversity Taiwan...
The plant pathogen implicated in the Irish potato famine, Phytophthora infestans , continues to reemerge globally. Understanding changes genome during emergence can provide insights useful for managing this pathogen. Previous work has relied on studying individuals from United States, South America, Europe, and China reporting that these occur as diploids, triploids, or tetraploids are clonal. We studied variation sexual populations at pathogen’s center of origin, Mexico, where it been...
Global climate change will have effects on diurnal temperature oscillations as well average temperatures. Studies potato late blight (Phytophthora infestans) development not considered daily oscillations. We hypothesize that growth and rates of P. infestans would be less influenced by in the magnitude fluctuations temperatures increases. investigated seven constant (10, 12, 15, 17, 20, 23, 27°C) diurnally oscillating (±5 ±10°C) around same means number lesions, incubation period, latent...
Temperature response curves under diurnal oscillating temperatures differ from those constant conditions for all stages of the Phytophthora infestans infection cycle on potatoes. We developed a mechanistic model (BLIGHTSIM) with an hourly time step to simulate late blight fluctuating environmental and predict epidemics in potato fields. BLIGHTSIM is modified susceptible (S), latent (L), infectious (I) removed (R) compartmental temperature relative humidity as driving variables. The was...
The Toluca valley, located in central Mexico, is thought to be the center of origin potato late blight pathogen Phytophthora infestans. We characterized over 500 individuals P. infestans sampled from populations with a geographical distance more than 400 km six regions adjacent valley three states including Michoacán, and Tlaxcala. Our sampling occurred on predominant east west gradient showed significant genetic differentiation. most western location found Michoacán was differentiated other...
Abstract The plant pathogen that caused the Irish potato famine, Phytophthora infestans , continues to reemerge globally. These modern epidemics are by clonally reproducing lineages. In contrast, a sexual mode of reproduction is observed at its center origin in Mexico. We conducted comparative genomic analysis 47 high coverage genomes infer changes genic copy number. included samples from populations as well several dominant clonal lineages sampled worldwide. conclude diploid was lineage...
Petunia hybrida is the world's most popular garden plant and regarded as a supermodel for studying biology associated with Asterid clade, largest of two major groups flowering plants. Unlike other Solanaceae, petunia has base chromosome number seven, not 12. This along recombination suppression previously hindered efforts to assemble its genome level. Here we achieve chromosome-level assembly P. using combination short-read long-read sequencing, optical mapping (Bionano) Hi-C technologies....