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Washington da Silva

Washington DaSilva

335 Plant Science Building
(607) 255-3245

Education

  • June 2013 - present. PhD Candidate, Plant Pathology/Virology, Cornell University
  • 2013. Master of Science, Plant Protection, Louisiana State University
  • 2010. Bachelor of Science, Agronomy Engineering, Universidade Federal de Viçosa, Brazil

Graduate Graduate Advisor: Stewart Gray

Research Focus

My work centers on Potato Virus Y (PVY), the major virus pathogen of potatoes (Solanum tuberosum L.).  I am investigating the changes in the genetic diversity structure of PVY populations introduced during vertical and horizontal transmission of the virus.  My other research focus is to identify molecular markers in potato that are linked to genes correlated with the expression of potato tuber necrotic ringspot disease (PTNRD), a tuber deformity associated with infections by necrotic strains of PVY.

Professional Experience

  • June 2013-present.  PhD Student, V/N Laboratory - Cornell University, (Advisor: Dr. Stewart Gray)
  • August 2010-May 2013.  Masters Student, Sweetpotato Diseases Detection Laboratory - Louisiana State University (Advisor: Dr. Christopher Clark)
  • March 2009-July 2010.  Research Assistant, Laboratory of Host-Parasite Interaction - Universidade Federal de Viçosa, Brazil (Advisor: Dr. Fabrício Rodrigues)
  • March-2007-September 2008.  Exchange Student, MAST Program - University of Minnesota (Supervisor: Ken Risher)
  • April 2008-September 2008.  Museum Guide, Museum of Natural History - Harvard University (Supervisor: Dr. Carol Carson)
  • March 2003-February 2007.  Research Assistant, Laboratory of Ecology and Social Insects – Universidade Federal de Viçosa, Brazil (Advisor: Dr. Jose Schoereder)
  • January 2001-March 2003. Administrative Manager, Health secretary of the town of Divinolandia de Minas, Minas Gerais State. Brazil

Awards and Honors

  • 2017.  American Phytopathological Society Foundation - Myron K. Brakke Travel Award - $500.00
  • 2016.  Mario Einaudi Center International Research Travel Grant - $2,000.00
  • 2016.  Cornell University Graduate School Research Travel Grant - $2,000.00
  • 2015.  Freedom of the City, Awarded The Key to the City of Divinolândia de Minas, Minas Gerais State - Brazil
  • 2015.  Scientia Agricola Front Cover Photograph, July/August 2015 Edition
  • 2015.  Cornell Graduate School Dean’s Scholar
  • 2015.  Cornell University Graduate School Conference Grant - $440.00
  • 2015.  American Phytopathological Society Foundation - Robert W. Fulton Student Travel Award - $500.00
  • 2015.  CALS Alumni Association Academic Enrichment Program - $250.00
  • 2014.  National Potato Council Scholarship - $10,000.00
  • 2014.  Phytopathology Front Cover Photograph, June 2014 Edition
  • 2013.  Cornell University Doctoral Diversity Fellowship - $110,324.00
  • 2012.  Louisiana State University Graduate School Travel Award - $250.00
  • 2012.  American Phytopathological Society Foundation - H. David Thurston Student Travel Award - $500.00
  • 2012.  Louisiana State University Plant Pathology Graduate Student Association Travel Award - $300.00
  • 2011.  American Phytopathological Society - Southern Division Student Travel Award - $250.00
  • 2009.  PIBIC/CNPq (Institutional Program of Scientific Initiation, National Brazilian Science Scholarship) - $7240.00
  • 2005.  PIBIC/CNPq (Institutional Program of Scientific Initiation, National Brazilian Science Scholarship) - $7240.00
  • 2003.  FAPEMIG PROBIC/UFV (Institutional Program of Scientific Initiation, Minas Gerais State-Brazil Science Scholarship) - $7240.00

Elected and Appointed Offices

  • 2016.  Member of the Organizing Committee for 76th American Phytopathological Society - Northeastern Division Annual Meeting.
  • 2014-2015.  Vice President, Plant Pathology Graduate Student Association, Cornell University
  • 2014-2015.  Student Representative of the Curriculum Committee, Department of Plant Pathology and Plant-Microbe Biology, Cornell University
  • 2014-2015.  Executive Committee Member, Department of Plant Pathology and Plant-Microbe Biology, Cornell University
  • 2014-2015.  Prospective Student Committee Member, Department of Plant Pathology and Plant-Microbe Biology, Cornell University
  • 2013-2014.  Treasurer, Plant Pathology Graduate Student Association, Cornell University
  • 2013.  Discussion Group Facilitator, 2013 Global Seminar II - Cornell University x Tokyo University of Agriculture and Technology
  • 2012-2013.  Student Representative of the Courses and Curriculum Committee, Department of Plant Pathology and Crop Physiology, Louisiana State University
  • 2011-2013.  Executive Committee Member, Plant Pathology and Crop Physiology Graduate Student Association, Louisiana State University
  • 2011-2013.  Treasurer, Plant Pathology and Crop Physiology Graduate Student Association, Louisiana State University
  • 2005.  Member of the Organizing Committee for the I Brazilian Symposium of Social Insects - IUSSI (International Union for the Study of Social Insects) Brazil

Professional Societies and Working Groups

  • APS - American Phytopathological Society
  • SBF - Sociedade Brasileira de Fitopatologia (Brazilian Phytopathological Society)
  • ACSE - Asian Council of Science Editors
  • IUSSI - International Union for the Study of Social Insects
  • The Honor Society of Phi Kappa Phi
  • Who’s Who Among Students in American Universities and Colleges
  • The Golden Key International Honour Society

Scientific Peer Review

  • Phytopathology
  • Plant Disease
  • Journal of Phytopathology
  • HortTechnology
  • Tropical Plant Pathology
  • The European Journal of Plant Pathology
  • Virus Research
  • American Phytopathological Society Foundation

Publications

- In Peer-reviewed Journals

da Silva W.L., Yang, K.T., Pettis, G.S., Clark, C.A. Characterization of Clostridium Isolates That Cause Flooding-Associated Soft Rot of Sweetpotato. Plant Disease (In Preparation)

Washington da Silva, Nina Zidack, Alex Karasev, and Stewart Gray. Genome plasticity or "error catastrophe":  Illumina deep sequencing shedding light into the population structure of PVY strains. Journal of Virology. (In Preparation)

Paula G. M. L. Nascimento, Beatriz L. S. Cruz. Andrea M, M. Dantas. Francisco C. L. Freitas, Marcia M. Q. Ambrosio, Rui S. Junior, Washington Luis da Silva. Incidence of root rot of melon in different soil management practices. Journal of Tropical Plant Pathology. (Submitted)

Washington da Silva, Jason Ingram, Christine Hackett, David Douches, Walter De Jong, and Stewart Gray. QTL Analysis of Tuber Dormancy in Autotetraploid Potato (Solanum tuberosum L.) G3 - Genes  |  Genomes  |Genetics (Submitted)

Cari Schmitz Carley, Payl Bethke, Joseph Coombs, Mark Clough, Washington da Silva, Walter De Jong, David Douches, Curtis Frederick, Kathleen Haynes, David Holm, Creighton Miller, Patricio Munoz, Felix Navarro, Richard Novy, Jiwan Palta, Gregory Porter, Kyle Rak, Vidyasagar Sathuvalli, Asunta Thompson, Craig Yencho, and Jeffrey Endelman. Genomic Selection in Autotetraploid Potato. Genetics (Submitted)

Washington da Silva, Jason Ingram, Christine Hackett, David Douches, Walter De Jong, and Stewart Gray. Mapping Loci that Control Tuber and Foliar Symptoms Caused by PVY in Autotetraploid Potato (Solanum tuberosum L.). G3 - Genes  |  Genomes  |Genetics (Accepted)

Ruqiang Cui, Lei Zhang, Yuyan Chen, Wenkun Huang, Chengming Fan, Qingsong Wu, Deliang Peng, Washington da Silva, Xiaotang Sun.  2017. Expression and evolutionary analyses of three acetylcholinesterase genes (Mi-ace-1, Mi-ace-2, Mi-ace-3) in the root-knot nematode Meloidogyne incognita. Experimental Parasitology. Vol. 176, pages 75-81. DOI:  https//doi.org/10.1016/j.exppara.2017.01.008

Nascimento , K. J. T., Araujo, L., Resende, R. S., Schurt, D. A., da Silva, W. L., Rodrigues, F. A. 2016. Silicon, acibenzolar-S-methyl and potassium phosphite in the control of brown spot in rice. Bragantia. ahead of print  Epub Feb 26, 2016. DOI: http://dx.doi.org/10.1590/1678-4499.281

da Silva, W. L., Cruz, M. F. A., Fortunato, A. A., Rodrigues, F. A. 2015.  Histochemical aspects of wheat resistance to leaf blast mediated by silicon.  Scientia Agricola. 73:322-327.  http://dx.doi.org/10.1590/0103-9016-2014-0221

Fortunato, A. A., da Silva, W. L., Rodrigues, F. A. 2014.  Phenylpropanoid Pathway is Potentiated by Silicon in the Roots of Banana Plants During the Infection Process of Fusarium oxysporum f.sp. cubense. Phytopathology 104:597-603.  http://dx.doi.org/10.1094/PHYTO-07-13-0203-R

Clark, C. A., da Silva, W. L., Arancibia, R. A., Main, J. L., Schultheis, J. R. van-Esbroeck, Z. P., Jiang, C., Smith, J. 2013.  Incidence of End Rots and Internal Necrosis in Sweetpotato is Affected by Cultivar, Curing, and Ethephon Defoliation. HortTechnology 23:886-897. http://horttech.ashspublications.org/content/23/6/886.full

da Silva, W. L., Clark, C.A. 2013.  Infection of sweetpotato by Fusarium solani and Macrophomina phaseolina prior to harvest. Plant Dis. 97:1636-1644. http://dx.doi.org/10.1094/PDIS-05-13-0514-RE

da Silva, W. L., Singh, R. 2012.  First report of Alternaria alternata causing leaf spot on Aloe vera in Louisiana. Plant Dis. 96:0000.  http://dx.doi.org/10.1094/PDIS-04-12-0343-PDN

da Silva, W. L., Schoereder, J. H. 2008.  Leaf-Cutting Ants (Hymenoptera: Formicidae) and Soil Classes: Preference, Survival and Nest Density. Sociobiology 52 (2): 403-415.

Sousa-Souto, L., Schoereder, J. H., Schaefer, C. E. G. R., da Silva, W. L. 2008.  Ant nests and soil nutrient availability: the negative impact of fire. Journal of Tropical Ecology 24:639–646. http://dx.doi.org/10.1017/S0266467408005464

Sousa-Souto, L., Guerra, M. B. B., Schoereder, J. H., Schaefer, C. E. G. R., da Silva, W. L. 2007.  Determination of the conversion factor in colonies of Atta sexdens rubropilosa (Hymenoptera: Formicidae) and its relationship with the quality of harvested leaf substrate. R. Árvore, Viçosa-MG, v.31, n.1, p.163-166.  http://dx.doi.org/10.1590/S0100-67622007000100018

- Other Publications

Arancibia, R., Clark, C., Stokes, B., Grelen, L., da Silva, W., Baird, R., and Main, J.  2013. Sweetpotato tip and end rot incidence in response to pathogen inoculations and postharvest foliar applications of ethephon. National Sweetpotato Collaborators Group Progress Report 2012:7.

Clark, C., da Silva, W., Arancibia, R., Main, J., Schultheis, J., Pesic van-Esbroeck, Z., and Chen, J. 2013. End rots, tip rot, and internal necrosis: investigations into cause and resistance. National Sweetpotato Collaborators Group Progress Report 2012:7-8.

Clark, C. A., da Silva, W., and Villordon, A. 2013. Lenticel proliferation and flooding associated soft rot in sweetpotato. National Sweetpotato Collaborators Group Progress Report 2012:8-9.

C. Clark, W. L. da Silva. 2012.  Disease Update: Soft Rot of Flooded Sweet Potatoes.  Baton Rouge, LA.  Louisiana Sweet Potato News 01/2012; 7:2-4. http://www.lsuagcenter.com/NR/rdonlyres/586FD432-9837-4D44-A288-490622604D03/86270/SweetPotatoNewsSpring2012.pdf

da Silva, W. L.  2010.   Forgotten Fordlândia: Destruction by a Fungus.  In Virtual Highway of Biological Historical Markers by Meredith Blackwell.  http://lsb380.plbio.lsu.edu/Highway%20markers%20folder/Fordlandia.html.

da Silva, W. L., Schoereder, J. H. 2005.  Formigas saúvas preferem diferentes tipos de solos? Anais do I simpósio brasileiro de insetos sociais: Insetos sociais e desenvolvimento sustentável IUSSI, Belo Horizonte, Minas Gerais, Brazil.

Souza, D. J., da Silva, W. L. Sousa-Souto, L. 2004.  Existe dominância entre rainhas em colônias artificialmente poligínicas de Acromyrmex subterraneus molestans? Anais do I Simpósio de Entomologia da UFV, Viçosa, Minas Gerais, Brazil.

Conference Presentations and Abstracts
 

Washington da Silva, Walter De Jong, and Stewart Gray. 2017. Mapping Loci that Control Tuber and Foliar Symptonms Caused by PVY in Autotetraploid Potato (Solanum tuberosum L.) APS Annual Meeting, San Antonio, TX, USA. August 2017.

da Silva W.L., Yang, K.T., Pettis, G.S., Clark, C.A. 2016.  Characterization of Clostridium Isolates That Cause Flooding-Associated Soft Rot of Sweetpotato. The ANAEROBE Congress, organized by the Anaerobe Society of The Americas. Nashville, TN, USA.  July 2016. (Poster)

Washington da Silva, Walter De Jong, and Stewart Gray.  2016.  Search for Molecular Markers in Potato Germplasm for PTNRD Expression.  The Northeaster Plant, Pest, and Soils Conference.  Philadelphia, PA, USA. January 2016. (Oral Presentation)

Washington da Silva and Stewart Gray.  2015.  Changes in the population structure of PVYO during systemic movement in a potato plant.  APS Annual Meeting, Pasadena, CA, USA. August 2015.  v. 102, n. 7S, p. S4.28

Chris Clark, Washington da Silva, and Arthur Villordon.  2013.  Lenticel proliferation and flooding associated soft rot in sweetpotato.  73rd Annual Meeting Southern Region American Society for Horticultural Science. Orlando, FL, USA.  HortScience in press.  (Oral Presentation)

Chris Clark, Washington da Silva, Ramón Arancibia, Jeff Main, Jonathan Schultheis, Zvezdana Pesic van-Esbroeck, and Chen Jiang.  2013.  End rots, tip rot, and internal necrosis: investigations into cause and resistance.  73rd Annual Meeting Southern Region American Society for Horticultural Science. Orlando, FL, USA.  HortScience in press. (Oral Presentation)

Ramón Arancibia, Chris Clark, Lori Grelen, Washington da Silva, and Jeff Main.  2013.  Sweetpotato tip and end rot incidence in response to pathogen inoculations and preharvest foliar applications of ethephon.  73rd Annual Meeting Southern Region American Society for Horticultural Science. Orlando, FL, USA.  HortScience in press.  (Oral Presentation)

da Silva, W. L., Clark, C. A. 2012.  Flooding-associated soft rot of sweetpotato storage roots caused by Clostridium spp. APS Annual Meeting, Providence, Rhode Island, USA. August 2012.  v. 102, n. 7S, p. S4.28. http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-102-7-S4.1.  (Oral Presentation)

da Silva, W. L., Clark, C. A. 2012.  Infection of sweetpotato by fungal end rot pathogens prior to harvest. APS Southern Division Annual Meeting, Birmingham, Alabama, USA. April 2012.  v. 102, n. 4S, p. S2.1-S2.11. http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-102-4-S2.1.  (Oral Presentation)

da Silva, W. L., Clark, C. A. 2012.  Infection of sweetpotato by fungal end rot pathogens prior to harvest. National Sweetpotato Collaborators Group Annual Meeting, Birmingham, Alabama, USA. (Oral Presentation)

da Silva, W. L., Rodrigues, F. A. 2011.  Histochemical analysis of wheat resistance to leaf blast mediated by silicon. APS Southern Division Annual Meeting, Corpus Christi, Texas, USA. February 2011. v. 101, n. 3S, p. S264. http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2011.101.6.S264. (Oral Presentation)

Moreira, W. R., Rodrigues, F. A., da Silva, W. L., Schurt, D. A., Dias, L. A. S. 2010.  Absorção de silício pelo pinhão manso. Simpósio Brasileiro de Silício na Agricultura, Vicosa, Minas Gerais, Brazil. (Poster)

Schurt, D. A., Souza, N. F. A., Telles, K., Ribas, W., da Silva, W. L., Rodrigues, F. A. 2009.  Quantificação da atividade enzimática em bainhas de arroz supridas com silício e inoculadas com Rhizoctonia solani. Congresso Brasileiro de Fisiologia Vegetal. Fortaleza, Ceara, Brazil. (Poster)

da Silva, W. L., Schoereder, J. H. 2005.  Formigas saúvas preferem diferentes tipos de solos? I simpósio brasileiro de insetos sociais: Insetos sociais e desenvolvimento sustentável IUSSI, Belo Horizonte, Minas Gerais, Brazil. (Poster)

Souza, D. J., da Silva, W. L. Sousa-Souto, L. 2004.  Existe dominância entre rainhas em colônias artificialmente poligínicas de Acromyrmex subterraneus molestans?  I Simpósio de Entomologia da UFV, Viçosa, Minas Gerais, Brazil. (Poster)