# positions[].label
Associate Professor & Extension Specialist

# positions[].organizations[].parent[].label
College of Agriculture and Life Sciences

# positions[].organizations[].parent[].label
College of Agriculture and Life Sciences

# overview
I conduct translational studies that address immediate and long-term needs of growers and other stakeholders involved in the production of fruit and vegetable crops. My research program emphasizes virus discovery and characterization, genetic diversity and population genetics studies, and understanding of disease epidemiology. The overarching goal is to utilize the results of these studies to develop science-based disease management strategies.

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# keywords[]
2.2 Factors Relating To The Physical Environment

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# keywords[]
Reverse Transcriptase Polymerase Chain Reaction

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# keywords[]
<italic>ipomovirus</italic>

# keywords[]
<italic>potyviridae</italic>

# keywords[]
<italic>bemisia Tabaci</italic>

# keywords[]
2.2 Factors Relating To The Physical Environment

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# keywords[]
Reverse Transcriptase Polymerase Chain Reaction

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# keywords[]
Common Bean, Viruses, Ethiopian Tobacco Bushy Top Virus, Umbravirus, Virus Diagnosis, High-throughput Sequencing, Satellites

# keywords[]
2.2 Factors Relating To The Physical Environment

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# keywords[]
Reverse Transcriptase Polymerase Chain Reaction

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# educationAndTraining[].organization.label
Washington State University - (Pullman, Washington, United States)

# educationAndTraining[].organization.label
Obafemi Awolowo University - (Ilesa, Nigeria)

# educationAndTraining[].organization.label
University of Ibadan - (Ibadan, Oyo, Nigeria)

# publications[].label
First Report of Cotton leafroll dwarf virus Infecting Upland Cotton (Gossypium hirsutum) in Texas

# publications[].label
Prevalence and RT/RNase H Genealogy of Sugarcane Bacilliform Virus Isolates from China

# publications[].label
Status of Cassava Begomoviruses and Their New Natural Hosts in Nigeria.

# publications[].label
First Report of Potato virus Y in Potato in West Java, Indonesia.

# publications[].label
Survey for cassava brown streak disease revealed for the first time the presence of a molecular variant of Uganda cassava brown streak virus in Zambia

# publications[].label
Association of a novel combination of an umbravirus, a satRNA, and cowpea polerovirus 1 with a bushy top disease of common bean (Phaseolus vulgaris L.)

# publications[].label
First report of Pepper vein yellows virus infecting pepper (Capsicum spp.) in the United States

# publications[].label
A leafhopper-transmissible DNA virus with novel evolutionary lineage in the family geminiviridae implicated in grapevine redleaf disease by next-generation sequencing.

# publications[].label
First Report of Cotton leaf curl Gezira virus and Its Associated Alphasatellite and Betasatellite from Disease Affected Okra Plants in the United States

# publications[].label
First Report of watermelon crinkle leaf-associated virus 1 (WCLaV-1) and WCLaV-2 in Watermelon (Citrullus lanatus) Plants Coinfected with Cucurbit chlorotic yellows virus in Florida.

# publications[].label
Molecular Characterization of Divergent Isolates of Grapevine Red Blotch Virus from Blanc du Soleil, an Interspecific Hybrid White Grapevine Cultivar

# publications[].label
First Report of Pepper vein yellows virus Infecting Pepper (Capsicum spp.) in the United States

# publications[].label
Impacts of Grapevine Leafroll Disease on Fruit Yield and Grape and Wine Chemistry in a Wine Grape (Vitis vinifera L.) Cultivar.

# publications[].label
First Report of the Occurrence of African cassava mosaic virus in a Mosaic Disease of Soybean in Nigeria.

# publications[].label
Phytophthora nicotianae and huanglongbing cause different nutritional imbalances in grapefruit trees

# publications[].label
Pseudococcus maritimus (Hemiptera: Pseudococcidae) and Parthenolecanium corni (Hemiptera: Coccidae) are capable of transmitting grapevine leafroll-associated virus 3 between Vitis x labruscana and Vitis vinifera.

# publications[].label
A Mixed Infection of Lettuce chlorosis virus, Papaya ringspot virus, and Tomato yellow leaf curl virus-IL Detected in a Texas Papaya Orchard Affected by a Virus-Like Disease Outbreak.

# publications[].label
Complete genome sequence analysis of a genetic variant of grapevine virus L from the grapevine cultivar Blanc du Bois.

# publications[].label
First report of Tobacco ringspot virus associated with decline symptoms of an American hybrid grape cultivar in Texas

# publications[].label
Survey for Grapevine Leafroll Associated Virus 3 in Texas Vineyards

# publications[].label
First Report of East African cassava mosaic Malawi virus in Plants Affected by Cassava Mosaic Disease in Zambia

# publications[].label
First report of squash vein yellowing virus naturally infecting butternut squash (Cucurbita moschata) in Texas.

# publications[].label
Identification and molecular characterization of a novel sugarcane streak mastrevirus and an isolate of the A-strain of maize streak virus from sugarcane in Nigeria.

# publications[].label
Occurrence of distinct genetic variants of cotton leafroll dwarf virus in Texas suggests its multiple introduction or local evolution in the US

# publications[].label
Mitigation of Huanglongbing: Implications of a biologically-enhanced nutritional program on yield, pathogen localization and host gene expression profiles.

# publications[].label
Multiplex PCR for the detection of African cassava mosaic virus and East African cassava mosaic Cameroon virus in cassava.

# publications[].label
Survey for Virus Diversity in Common Bean (Phaseolus vulgaris) Fields and the Detection of a Novel Strain of Cowpea polerovirus 1 in Zambia.

# publications[].label
Quality Matters: Influences of Citrus Flush Physicochemical Characteristics on Population Dynamics of the Asian Citrus Psyllid (Hemiptera: Liviidae).

# publications[].label
High-throughput sequence analysis of small RNAs in grapevine (Vitis vinifera L.) affected by grapevine leafroll disease.

# publications[].label
Near-Complete Genome Sequence of Grapevine Fabavirus, a Novel Putative Member of the Genus Fabavirus.

# publications[].label
Report on the first detection of Asian citrus psyllid Diaphorina citri Kuwayama (Hemiptera: Liviidae) in the Republic of Benin, West Africa.

# publications[].label
Incidence, distribution, and seasonal variance of cucurbit-infecting viruses across Texas

# publications[].label
Correction To: Detection and diversity of maize yellow mosaic virus infecting maize in Nigeria.

# publications[].label
Genetic variability of natural populations of Grapevine leafroll-associated virus 2 in Pacific Northwest vineyards.

# publications[].label
The Occurrence of Bean common mosaic virus and Cucumber mosaic virus in Yardlong Beans in Indonesia.

# publications[].label
Survey, Molecular Detection, and Characterization of Geminiviruses Associated with Cassava Mosaic Disease in Zambia.

# publications[].label
First Report of Citrus Virus A in Texas Associated with Oak Leaf Patterns in Citrus sinensis.

# publications[].label
Coat protein genealogy and complete genome characterization of field isolates of rice yellow mottle virus from Zambia

# publications[].label
First Report of Monarda didyma Infection with Impatiens necrotic spot virus in Washington State

# publications[].label
A novel and efficient method for identifying cotton leafroll dwarf virus infection in upland cotton (Gossypium hirsutum)

# publications[].label
Molecular characterization of a divergent genetic variant of wheat Eqlid mosaic virus from a Texas wheat field.

# publications[].label
African cassava mosaic virus (African cassava mosaic)

# publications[].label
Development of Quantitative Real-time RT-PCR for Diagnosis and Differentiation of Grapevine Viruses in Vines and Vectors

# publications[].label
First Report of Grapevine yellow speckle viroid 1, Grapevine yellow speckle viroid 2, and Hop stunt viroid Infecting Grapevines (Vitis spp.) in Nigeria

# publications[].label
Prunus geminivirus A: A Novel Grablovirus Infecting Prunus spp.

# publications[].label
Economic Implications of Citrus Greening Disease Management Strategies

# publications[].label
First report on the presence of the huanglongbing vectors in Ghana

# publications[].label
A Description of the Possible Etiology of the Cilantro Yellow Blotch Disease.

# publications[].label
Alternate hosts of African cassava mosaic virus and East African cassava mosaic Cameroon virus in Nigeria.

# publications[].label
First report of the occurrence of Asian citrus psyllid Diaphorina citri (Hemiptera: Liviidae), an invasive species in Nigeria, West Africa.

# publications[].label
Severe Outbreak of a Yellow Mosaic Disease on the Yard Long Bean in Bogor, West Java

# publications[].label
Inoculum Sources of Phytophthora nicotianae

# publications[].label
The occurrence of mixed virus infections in a Texas Blanc du Bois vineyard

# publications[].label
First report of Nerine yellow stripe virus infecting crinium lily (Crinium sp.) in Texas.

# publications[].label
First Report of Cucumber mosaic virus in Yams (Dioscorea spp.) in Ghana, Togo, and Republic of Benin in West Africa.

# publications[].label
First Report of Maize yellow mosaic virus Infecting Sugarcane (Saccharum spp.) and Itch Grass (Rottboellia cochinchinensis) in Nigeria

# publications[].label
Genomic variability and molecular evolution of Asian isolates of sugarcane streak mosaic virus.

# publications[].label
Molecular characterization and impacts of a strain of Grapevine leafroll-associated virus 2 causing asymptomatic infection in a wine grape cultivar.

# publications[].label
Incidence, Severity, and Characterization of Phytophthora Foot Rot of Citrus in Texas and Implications for Disease Management.

# publications[].label
Characterization of Dominant Resistance to Tobacco Etch Virus Discovered in Capsicum baccatum and Its Introgression into a Capsicum annuum Background

# publications[].label
Olea europaea geminivirus is present in a germplasm repository and in California and Texas olive (Olea europaea L.) groves.

# publications[].label
Identification and genomic characterization of grapevine Kizil Sapak virus, a novel grapevine-infecting member of the family Betaflexiviridae.

# publications[].label
First Report of Rottboellia yellow mottle virus Infecting Sorghum Sudangrass Hybrid (Sorghum bicolor x Sorghum bicolor var. sudanense) in North America.

# publications[].label
Description of a Novel Monopartite Geminivirus and Its Defective Subviral Genome in Grapevine.

# publications[].label
A Survey for Grapevine Viruses in Washington State Concord ( Vitis  labruscana L.) Vineyards

# publications[].label
First report of watermelon crinkle leaf-associated virus 1 (WCLaV-1) and WCLaV-2 infecting watermelon (Citrullus lanatus) in the United States.

# publications[].label
First Report of Southern Bean Mosaic Virus Infecting Common Bean in Zambia

# publications[].label
Cotton Leafroll Dwarf Virus US Genomes Comprise Divergent Subpopulations and Harbor Extensive Variability.

# publications[].label
Sequence diversity, population genetics and potential recombination events in grapevine rupestris stem pitting-associated virus in Pacific North-West vineyards.

# publications[].label
Occurrence of Grapevine leafroll-associated virus 1 in Two Ornamental Grapevine Cultivars in Washington State.

# publications[].label
Characterization of a New Nepovirus Infecting Grapevine.

# publications[].label
Cassava Brown Streak Disease and Ugandan cassava brown streak virus Reported for the First Time in Zambia.

# publications[].label
Contrasting amino acid profiles among permissive and non-permissive hosts of Candidatus Liberibacter asiaticus, putative causal agent of Huanglongbing.

# publications[].label
SYBR() Green-based real-time quantitative reverse-transcription PCR for detection and discrimination of grapevine viruses.

# publications[].label
Wheat curl mite: A new source of the eriophyoid mite in wheat fields identified

# publications[].label
Distribution of Candidatus Liberibacter asiaticus in Citrus and the Asian Citrus Psyllid in Texas Over a Decade.

# publications[].label
Banana bunchy top virus in sub-Saharan Africa: investigations on virus distribution and diversity.

# publications[].label
Complete genome sequence analysis of an American isolate of Grapevine virus E.

# publications[].label
An Assessment of the Virome of Nigerian Vineyards

# publications[].label
Survey and Detection of  Candidatus Liberibacter asiaticus in a Citrus Nursery Facility in South Texas

# publications[].label
Correction: A Leafhopper-Transmissible DNA Virus with Novel Evolutionary Lineage in the Family Geminiviridae Implicated in Grapevine Redleaf Disease by Next-Generation Sequencing.

# publications[].label
Molecular epidemiology of cassava mosaic geminiviruses in Zambia

# publications[].label
Wheat Curl Mite: A New Source of the Eriophyoid Mite in Wheat Fields Identified

# publications[].label
An Update on Grapevine Leafroll Disease in Washington Vineyards

# publications[].label
Grapevine virus M, a novel vitivirus discovered in the American hybrid bunch grape cultivar Blanc du Bois in Texas.

# publications[].label
Effects of Grapevine Leafroll Disease on Own-Rooted Winegrape Cultivar Merlot under Cool-Climate Conditions

# publications[].label
Indian cassava mosaic virus (Indian cassava mosaic)

# publications[].label
Insights on Photosynthesis Physiology of Merlot Grapevines (Vitis vinifera) Affected by Grapevine Leafroll Disease

# publications[].label
First Report of Tobacco ringspot virus Infecting an American Hybrid Grape Cultivar in Texas

# publications[].label
Prevalence of Viruses in Commercial Wine Grape Vineyards in Georgia

# publications[].label
First Report of Potato virus Y in Potato in Tajikistan.

# publications[].label
Occurrence of Cucumber mosaic virus Subgroups IA and IB Isolates in Tomatoes in Nigeria.

# publications[].label
First Report of Grapevine leafroll-associated virus 1 Infecting Grapevines (Vitis spp.) in Nigeria

# publications[].label
A naturally occurring genetic variant of grapevine virus L from Texas Blanc du Bois grapevines

# publications[].label
Identification of a Chromosomal Deletion Mutation and the Dynamics of Two Major Populations of 'Candidatus Liberibacter asiaticus' in Its Hosts.

# publications[].label
First report on the presence of huanglongbing vectors (Diaphorina citri and Trioza erytreae) in Ghana.

# publications[].label
First report of Ethiopian tobacco bushy top virus and its associated satellite RNA infecting common bean (Phaseolus vulgaris L.) in Zambia.

# publications[].label
Complete nucleotide sequences of a new bipartite begomovirus from Malvastrum sp. plants with bright yellow mosaic symptoms in South Texas.

# publications[].label
Detection and diversity of maize yellow mosaic virus infecting maize in Nigeria.

# publications[].label
Genetic diversity of Grapevine virus A in Washington and California vineyards.

# publications[].label
Occurrence of Banana Bunchy Top Disease Caused by the Banana bunchy top virus on Banana and Plantain (Musa sp.) in Cameroon.

# publications[].label
COPF: Citrus orchard perimeter fencing as a strategy for reducing Asian citrus psyllid (Hemiptera:Liviidae) infestation

# publications[].label
The occurrence of diverse virus species in Texas cucurbit fields as determined by metagenomic analysis

# publications[].label
Grapevine leafroll-associated virus 1 occurs as genetically diverse populations.

# publications[].label
Enhanced Acquisition Rates of 'Candidatus Liberibacter asiaticus' by the Asian Citrus Psyllid (Hemiptera: Liviidae) in the Presence of Vegetative Flush Growth in Citrus.

# publications[].label
Two new 'legumoviruses' (genus Begomovirus) naturally infecting soybean in Nigeria.

# publications[].label
First Report of Papaya (Carica papaya) Naturally Infected With the Introduced Tomato yellow leaf curl virus-Israel

# publications[].label
Multiple Pathogen Resistance Breeding in Capsicum spp.

# publications[].label
First report of Cucurbit chlorotic yellows virus infecting cantaloupe (Cucumis melo L.) in Texas.

# publications[].label
Molecular characterization of two divergent variants of sugarcane bacilliform viruses infecting sugarcane in China

# publications[].label
Prevalence and Genome Characterization of Field Isolates of Sugarcane Mosaic Virus (SCMV) in Nigeria.

# publications[].label
Studies on Impacts of Grapevine Leafroll Disease on an Own-Rooted Winegrape Cultivar

# publications[].label
First report of Iris yellow spot virus in onion in Tajikistan

# schools[]
College of Agriculture and Life Sciences

# inTheNews[].label
Infected insects may warn of impending citrus disease a year in advance

# inTheNews[].label
Cotton leafroll dwarf virus discovered in Central Texas

# inTheNews[].label
Residents can help save Texas’ citrus industry

# inTheNews[].label
New citrus planting method stops bugs, yields additional benefits

# inTheNews[].label
Study compares wines from diseased and healthy vines

# inTheNews[].label
$4.3 million in research takes aim at devastating citrus disease

# inTheNews[].label
Texans asked to help keep citrus canker in check

# inTheNews[].label
Psyllids May Give a Year’s Warning of HLB

# inTheNews[].label
Texas scientists share hopeful new insight on citrus greening

# inTheNews[].label
Alabi named new plant pathologist at Weslaco

# inTheNews[].label
Mexican fruit fly control needs citizen help to keep Texas citrus industry vibrant