Dr. Hanu R. Pappu


President Sam Smith Distinguished Professor in Plant Virology
Department of Plant Pathology Ph.D. 1990, University of Alberta, Edmonton

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Professional Experience

  • Carl F., & James J. Chuey Endowed Chair, September 2017
  • Professor, July 2010-
  • Department Chair, 2008-2013. Adminstered the state-wide research and extension programs in plant pathology and the plant pathology graduate program (M.S. and Ph.D).
  • Professor and Chair, July 2010-August 2013
  • Associate Professor and Chair, December 2008-June 2010
  • Associate Professor (60% Research, 40% Teaching), October 2002- June 2010
  • Biotechnologist, Biotechnology Regulatory Services, USDA-APHIS, Riverdale, MD, 2001-2002
  • Assistant and Associate Professor, University of Georgia, 1995-2001 (75% Research, 25% Extension)
  • Postdoctoral Associate, University of Florida, Gainesville, FL, 1990-1994 (with Prof. Charles Niblett)

Research Interests

Viruses and Virus Diseases of Horticultural Crops. Biology and molecular biology of members of the following virus groups: thrips-transmitted tospoviruses (Bunyaviridae), plant pararetroviruses (Caulimoviridae), potyviruses (Potyviridae), and potex and carlaviruses (Flexiviridae). Crops include vegetables, nursery/landscape/ornamentals, and legumes.

Genomics and proteomcis of DNA and RNA viruses pathogenic to horticultural crops. Molecular characterization, gene structure-function relationships (Pappu et al. PNAS 90:36410; virus-host and virus-virus interactions (Mitter et al., 2013. PLoS ONE; Eid et al., 2013. Virus Genes; Bag et al., 2012. PLoS ONE) molecular evolutionary studies using viral genes as markers for attribution (Almeyda et al.,, 2013. Virus Genes; Pappu et al. Arch. Virol. 151: 1015); identification and development of novel promoters from plant pararetroviruses for expression of foreign genes in plants; molecular studies on plant pararetroviruses that exist as integrants in the host plant genome (Pahalawatta et al., Virology 376: 253-257) and use of RNA and DNA viruses of plants as tools for studying virus-host and virus-vector interactions.

Specific areas of research encompass both basic and applied components that include:

  • Molecular and biotechnological approaches for characterization and control of viral diseases of horticultral crops.
  • Genomics, proteomics, molecular epidemiology, conventional and transgenic resistance, virus detection and diagnosis, and host-virus interactions.
  • Environmental impact assessments, and regulatory framework for transgenic plants/GM crops; impact of plant biotechnology on society; adoption trends of plant biotechnology in the US and other parts of the world.

Specific research interests/expertise include

* Molecular and biotechnological approaches for characterization and control of viral diseases of crop plants.
* Specific areas of interest are genomics, proteomics, molecular epidemiology, conventional and transgenic resistance, virus detection and diagnosis, and host-virus interactions.
* Current focus is on tospoviruses, luteoviruses, potyviruses, and caulimoviruses
* Crops include vegetables, nursery/ landscape/ ornamentals, legumes, and cereals.
* Other areas of expertise include environmental impact assessments, and regulatory framework for transgenic plants/GM crops; impact of plant biotechnology on society; adoption trends of plant biotechnology in the US and other parts of the world

Ongoing projects

  • Thrips and tospoviruses in various vegetable and legume cropping systems
  • Molecular studies on tuber necrosis causing viruses of potato – PVY, Potato mop top virus, and Tobacco rattle virus
  • Vegetable IPM in Sub-Saharan Africa and South Asia: Geminiviruses, Potyviruses, and Tospoviruses
  • Iris yellow spot virus epidemics in onion bulb and seed crops: Epidemiology, biological and molecular analysis of virus isolates, conventional and biotechnological approaches for introducing virus resistance, IPM
  • Maize (corn) lethal necrosis disease in Africa
  • Aphid-transmitted viruses in cool season food legumes: Biology, epidemiology and virus resistance
  • New and emerging viruses affecting nursery and landscape industry
  • Biological and molecular studies of Dahlia mosaic caulimovirus
  • Molecular basis of potato-virus interactions
  • Geminiviruses – molecular characterization and phylogeography

Awards and Honors

  • Chuey Endowed Chair (2017)
  • Fellow, American Phytopathological Society (2015)
  • Fellow, National Academy of Agricultural Sciences of India (2016)
  • International Research Fellow, Japan Society for Promotion of Science, Government of Japan (2015)
  • Award of Excellence in Research, College of Agriculture, Human and Natural Resource Sciences (CAHNRS), WSU (2015)
  • Fulbright Distinguished Chair (2015)
  • OECD Fellow, Institute for Virus Research, Torino, Italy (2013)
  • Professor B.P. Pal Distinguished Chair, Indian National Science Academy, New Delhi (2013)
  • WSU CAHNRS Dean’s Meritorious Service Award (2012)
  • WSU CAHNRS Team Interdisciplinary Award (2012)
  • K.C. Mehta and Manoranjan Mitra Award, Indian Phytopathologial Society (2012)
  • US Fulbright Specialist (2011)
  • US Fulbright Scholar, Alexandria University, Alexandria, Egypt (2009)
  • Award of Excellence, Western Association of Agricultural Experiment Station Directors (2008)
  • Mentor of the Year Award Nominee, WSU Women and Leadership Alliance Forum (2007)
  • OECD Fellow, Bulb Research Institute, Lisse, The Netherlands (2006)
  • Advisor of Merit Award by the Graduate and Professional Students Association, WSU (2005)
  • Certificate of Recognition for Inventors from WSU President Lane Rawlins (2004)
  • President Samuel H. Smith Distinguished Professorship (2002)
  • Certificate of Appreciation by the USDA-APHIS (2002)
  • Research and Education Award by the Georgia Peanut Commission (1999)
  • Peanut Research and Education Award by the American Peanut Council (1998)
  • Bailey Award Nominee, American Peanut Research and Education Society (1997)
  • Excellence in Research Award by the University of Georgia, Tifton Campus (1997)
  • Best Research Presentation Award by the Georgia Association of Plant Pathologists (1996)
  • Dr. Myer Horowitz Graduate Scholarship from the University of Alberta (1989)

Selected Publications

Review Articles/Book Chapters (Invited and peer-reviewed)

  • Ramesh, S.V., P. Sahu, Manoj Prasad, S. Praveen and H.R. Pappu (2017). Geminiviruses and plant hosts: A closer examination of the molecular arms race. Viruses 9:256. doi:10.3390/v9090256
  • Pappu, H.R. 2015. Thrips-transmitted Iris yellow spot virus – A threat to onion sustainability. Agricultural Research Journal 52: 10-12
  • Pappu HR, Bag S (2014). ICTV taxonomic proposal 2014.004aV.A.v2. Tospovirus_sp. Create 1 new species in the genus Tospovirus, family Bunyaviridae. Ratification vote on taxonomic proposals to the International Committee on Taxonomy of Viruses (2015). Archives of Virology 160:1837–1850. http://www.ictvonline.org/proposals-14/2014.004aV.A.v2.Tospovirus_sp.pdf (pdf)
  • Jain, R.K., B. Mandal, H R Pappu and S.K. Holkar. 2014. Watermelon bud necrosis virus: A new species in the genus Tospovirus isolated from Citrullus lanatus and other cucurbitaceous hosts. International Committee for Taxonomy of Viruses. In press.
  • Pappu, H.R. 2013. Viruses. In: Onion Health Management & Production. Onion IPMpipe. Edited by Howard Schwartz. 98pp. Colorado State University, Ft. Collins, CO.
  • Mandal, B., R. K. Jain, M. Krishnareddy, N.K. Krishna Kumar, K.S. Ravi, and H. R. Pappu. 2012. Emerging Problems of Tospoviruses (Bunyaviridae) and their Management in the Indian Subcontinent. Plant Disease 96:468-479.
  • Makkouk, K., H.R. Pappu and S.G. Kumari. 2012. Virus Diseases of Peas, Beans and Faba Bean in the Mediterranean Region. Advances in Virus Research 84:367-402.
  • Chastagner, G., G.R. Hanks, M.L. Daughtrey, I. Yedidia, T.Miller, and H.R. Pappu. 2012. Sustainable Production and Integrated Management: Environmental Issues Pp. 363-420. In: Kamenetsky, R., and H. Okubo (Eds), Ornamental Geophytes: From Basic Science to Sustainable Horticultural Production. Taylor and Francis. 553 pp.
  • Pappu, H.R., R.A.C. Jones, and R.K. Jain. 2009. Global status of tospovirus epidemics in diverse cropping systems: Successes gained and challenges that lie ahead. Virus Research 141:219–236.
  • Pappu, H.R. 2008. Tomato spotted wilt virus (Bunyaviridae). In: Encyclopedia of Virology. 3rd edition. Brian Mahy and Marc van Regenmortel (Eds.). Elsevier Ltd, Oxford, UK. pp. 133-138.

Refereed Journal Publications

  • Wang, J., Y. Zhai, D. Zhu, W. Liu, H.R. Pappu, and Q. Liu (2018). Whole-genome characterization of Prunus necrotic ringspot virus (PNRSV) infecting sweet cherry in China. Genome Announcements. In press.
  • Vaira, A.M., L. Miozzi, M. Vallino, A. Carra, R. Lenzi, D. Salvi, J. Hammond and H.R. Pappu (2018). Evidence of new viruses infecting freesia hybrids showing necrotic disease.    Acta Horticulturae 1193: 21-28. Proc. XIV Int. Symp. on Virus Diseases of Ornamental Plants. Eds.: J. Hammond et al.
  • Senthilraja, C., Renukadevi, P., Malathi, V.G., Nakkeeran, S and Pappu, H.R. (2018). Occurrence of tomato spotted wilt virus infecting snapdragon (Antirrhinum majus) in India. Plant Disease In press.
  • Krupovic, M., J. Blomberg, J.M. Coffin, I. Dasgupta, H. Fan5, A.D. Geering, R. Gifford, B. Harrach, R. Hull, W. Johnson, J.F. Kreuze, D. Lindemann, C. Llorens, B. Lockhart, J. Mayer, E. Muller, N. Olszewski, H.R. Pappu, M. Pooggin, K. Richert-Pöggeler, S. Sabanadzovic, H. Sanfaçon, J.E. Schoelz, S. Seal, L. Stavolone, J.P. Stoye, P. Teycheney, M. Tristem, E.V. Koonin, and J.H. Kuhn (2018). Ortervirales: A new viral order unifying five families of reverse-transcribing viruses. Journal of Virology 92:e00515-18. https://doi.org/10.1128/JVI.00515-18.
  • Manglli, A., L. Tomassoli, A. Tiberini, G.E. Agosteo, A. Fontana, H.R. Pappu, and G. Albanese (2018). Investigations into the epidemiology of onion yellow dwarf virus and iris yellow spot virus in ‘Rossa di Tropea’ onion. Annals of Applied Biology. In press.
  • Ramesh, S.V., S. Williams, N. Mitter and H.R. Pappu (2017). Transcriptome-wide Identification of host genes targeted by Tomato spotted wilt virus (TSWV)-derived small interfering RNAs in TSWV-resistant and susceptible tomato cultivars. Virus Research 238:13–23. 
  • Olaya, C., N. Velásquez, M. Betancourt, W. J. Cuellar, and H.R. Pappu (2017). First Report of natural infection of tomato (Solanum lycopersicum L.) and bell pepper (Capsicum annuum) by Alstroemeria necrotic streak virus in Colombia. Plant Disease 101:1065.
  • Moyo, L., S.V. Ramesh, M. Kappagantu, S. Sathuvalli, N. Mitter, and H.R. Pappu (2017). Analysis of the effect of three biologically distinct strains of Potato virus Y at the potato transcriptome level. Virology Journal 14:129. DOI 10.1186/s12985-017-0803-8
  • Srinivasan, R., M. Abney, A. Culbreath, R. Kemerait, S. Tubbs, S.Monfort, and H.R. Pappu (2017). Three decades of managing Tomato spotted wilt virus in peanut in southeastern United States. Virus Research. 241:203-212. http://dx.doi.org/10.1016/j.virusres.2017.05.016

  • Mitter, N., Y. Zhai, A.X. Bai, K. Chua, S. Eid, M. Constantin,  R. Mitchell, and H.R. Pappu (2016). Evaluation and Identification of candidate genes for artificial microRNA-mediated resistance to Tomato spotted wilt virus(Tospovirus: Bunyavirdae)Virus Research 211:151-158.

  • Tabassum, A., S. Reitz, P. Rogers, and H.R. Pappu (2016). First Report of Iris yellow spot virus infecting green onion (Allium fistulosum) in the USA. Plant Disease. http://dx.doi.org/10.1094/PDIS-05-16-0599-PDN
  • Fletcher, S.J., A. Shrestha, J. Peters, B.J. Carroll, R. Srinivasan, H.R. Pappu, and N. Mitter (2016). The Tomato spotted wilt virus genome is processed differentially in its plant host Arachis hypogaea and its thrips vector Frankliniella fusca. Frontiers in Plant Science. doi: 10.3389/fpls.2016.01349
  • Margaria, P., L. Miozzi, C. Rosa, M.J. Axtell, M. Ciuffo, H.R. Pappu, M. Turina (2016). Comparison of small RNA profiles in Nicotiana benthamiana and Solanum lycopersicum infected by Polygonum ringspot tospovirus reveals host-specific responses to viral infection Virus Research 211:38–45
  • Karavina, C., J. Ibaba, A. Gubba and H.R. Pappu (2016). First report of Iris yellow spot virus infecting garlic and leek in Zimbabwe. Plant Disease 100:657. http://dx.doi.org/10.1094/PDIS-09-15-1022-PDN
  • Ramesh, S.V., and H.R. Pappu (2016). Sequence Characterization, molecular phylogeny reconstruction and recombination analysis of the Large RNA of Tomato spotted wilt virus (Tospovirus: Bunyaviridae) from the United States. BMC Research Notes 9:200. DOI 10.1186/s13104-016-1999-1
  • Wang, J., Y. Zhai, W. Liu, A. Dhingra, H.R. Pappu, and Q. Liu (2016). Structure and genome organization of Cherry virus A (Capillovirus, Betaflexiviridae) from China using small RNA sequencing. Genome AnnouncementsPublished online 2016 May 12. doi:  10.1128/genomeA.00364-16
  • Velásquez-Valle, R., L. R. Reveles-Torres, S. Salas-Muñoz, J. A. Mauricio-Castillo, and H.R. Pappu. (2016). First confirmed report of Iris yellow spot virus in onion nurseries in Zacatecas, Mexico. Plant Disease DOI10.1094/PDIS-01-16-0061-PDN
  • Wang, J., Y. Zhai, W. Liu, D. Zhu, H.R. Pappu, and Q. Liu (2016). The complete genomic characterization of plum bark necrosis stem pitting-associated virus(PBNSPaV) infecting sweet cherry in China. Genome Announcements. 2016 May 19;4(3). pii: e00413-16. doi: 10.1128/genomeA.00413-16.
  • Tripathi, D., G. Raikhy, and H.R. Pappu (2015). Movement and nucleocapsid proteins coded by two tospovirus species interact through multiple binding regions in mixed infections. Virology 478:143-53. doi: 10.1016/j.virol.2015.01.009
  • Tripathi, D., G. Raikhy, R. Dietzgen, M. Goodin, and H.R. Pappu (2015). In vivo Localization of Iris yellow spot virus (Bunyaviridae: Tospovirus)-encoded Proteins and Identification of Interacting Regions of Nucleocapsid and Movement Proteins.  PLoS ONE 10(3): e0118973. doi:10.1371/journal.pone.0118973
  • Tripathi, D., and H.R. Pappu (2015). Evaluation of Acibenzolar-S-Methyl-Induced Resistance against Iris yellow spot tospovirus. European J. Plant Pathology 142:855–864. DOI 10.1007/s10658-015-0657-0
  • Margaria, P.,  L. Miozzi, C. Rosa, M.J. Axtell, H.R. Pappu, M. Turina (2015). Small RNA profiles of wild-type and silencing suppressor-deficient tomato spotted wilt virus-infected Nicotiana benthamianaVirus Research. DOI: 10.1016/j.virusres.2015.05.021.
  • Almeyda, C.V., G. Raikhy, H.R. Pappu (2015). Characterization and comparative analysis of promoter elements from three plant  pararetroviruses associated with Dahlia (Dahlia variabilis). Virus Genes 51:96-104. DOI 10.1007/s11262-015-1196-7
  • Bag, S., H.F. Schwartz, C.S. Cramer, M.J. Havey, and H.R. Pappu (2015). Iris yellow spot virus (Tospovirus: Bunyaviridae): From obscurity to research priority. Molecular Plant Pathology 16(3), 224–237. DOI:10.1111/mpp.12177
  • Mustafa T, Horton DR, Cooper WR, Swisher KD, Zack RS, Pappu HR, et al. (2015). Use of electrical penetration graph technology to examine transmission of ‘Candidatus Liberibacter solanacearum’ to potato by three haplotypes of
    potato psyllid (Bactericera cockerelli; Hemiptera:Triozidae). PLoS ONE 10(9): e0138946. doi:10.1371/journal.pone.0138946
  • Renukadevi, P., K. Nagendran, S. Nakkeeran, G. Karthikeyan, M. Jawaharlal, D. Alice, V.G. Malathi and H.R. Pappu (2015). First report of natural occurrence of Tomato spotted wilt virus in India. Plant Disease 99:1190. DOI 10.1094/PDIS-01-15-0126-PDN
  • Mahuku, G., B.E. Lockhart, B. Wanjala, M.W. Jones, J.N. Kimunye, L,R. Stewart, B.J. Cassone, S. Sevgan, J. Nayasani, E. Kusia, P. Lava Kumar, C.L. Niblett, A. Wangai, A. Kiggundu, G. Asea, H.R. Pappu, B.M. Prasanna, and M.G. Redinbaugh (2015). Maize lethal necrosis (MLN), an emerging threat to maize-based food security in sub-Saharan Africa. Phytopathology 105:956-965. http://dx.doi.org/10.1094/PHYTO-12-14-0367-FI
  • Kusia, E.S., S. Subramanian, J.O Nyasani, F. Khamis, J. Villinger, E.M. Ateka, H.R. Pappu (2015). First report of lethal necrosis disease associated with co-infection of finger millet with Maize chlorotic mottle virus and Sugarcane mosaic virus in Kenya. Plant Disease 99:899.
  • Iftikhar, R., S.V. Ramesh, S. Bag, M. Ashfaq and H.R. Pappu. 2014. Global analysis of population structure, spatial and temporal dynamics of genetic diversity and evolutionary lineages of Iris yellow spot virus (TospovirusBunyaviridae). Gene 547:111-118. DOI: 10.1016/j.gene.2014.06.036
  • Margaria, P., L. Miozzi, M. Ciuffo, H.R. Pappu, and M. Turina 2014. Whole genome sequences of two distinct European Tomato spotted wilt virus (Tospovirus:Bunyaviridae) isolates. Archives of Virology DOI 10.1007/s00705-014-2256-3
  • Cramer, C., N. Singh, N. Kamal, and H.R. Pappu 2014. Screening onion plant introduction accessions for tolerance to onion thrips and Iris yellow spot virus. HortScience 49:1253-1261.
  • Schwartz, H.F., Diane Alston, Jeff Alwang, Michael Bartolo, Tamla Blunt, Charles O. Boateng, Bonnie Bunn, Chris S. Cramer, Whitney Cranshaw, Jeff Davidson, Mike Derie, Jeff Doran, Keith Douce, Dan Drost, Lindsey J. du Toit, J. Gao, Thaddeus Gourd, Beth Gugino, Bob Hammon, Janet Hardin, Mary Hausbeck, George Jibilian, Jed Lafferty, Joseph LaForest, Mark S. McMillan, S. Krishna Mohan, Jarrod Morrice, Brian A. Nault, Claudia Nischwitz, George Norton, Kristen Otto, Hanu R. Pappu, Mike Petersen, Ram Sampangi, Brenda Schroeder, Will Secor, Stephanie Szostek, Ned Tisserat, Mark E. Uchanski, Jim VanKirk, Tim Waters, Prissana Wiriyajitsomboon, and Carrie Wohleb. 2014. Onion ipmPIPE: A Coordinated Effort to Improve the Management of Onion Thrips and Iris yellow spot virus for the U.S. Onion Industry. Plant Health Progress doi: 10.1094/PHP-FE-14-0026
  • Zhai, Y., S. Bag, N. Mitter, M. Turina, and H.R. Pappu. 2014. Mutational analysis of two highly conserved motifs in the silencing suppressor coded by tospoviruses (Tospovirus, Bunyaviridae). Archives of Virology. 159:1499-1504. DOI 10.1007/s00705-013-1928-8
  • Zhai, Y., R. Miglino, R. Sorrentino, V. Masenga, D. Alioto, and H.R. Pappu. 2014. Complete genomic characterization of Eggplant mottled dwarf virus (Rhabdovirus:Rhabdoviridae) from Agapanthus spp by deep sequencing and de novo assembly. J. Plant Pathology doi: 10.4454/JPP.V96I3.003
  • Bag, S., S. Rondon, K.L. Druffel, D.G. Rileyand H.R. Pappu. 2014. Seasonal dynamics of thrips (Thrips tabci) transmitters of Iris yellow spot virus (Tospovirus:Bunyaviridae), a serious viral pathogen of onion bulb and seed crops. Journal of Economic Entomology 107: 75-82. DOI: http://dx.doi.org/10.1603/EC13141
  • Margaria, P., L. Miozzi, M. Ciuffo, H.R. Pappu, and M. Turina. 2014. Complete genome sequence of Polygonum ringspot virus (Tospovirus:Bunyaviridae). Archives of Virology 159:3149–3152. DOI 10.1007/s00705-014-2166-4
  • Lin, Y-H, J. Abad, C. J. Maroon-Lango, K.L. Perry, and H.R. Pappu. 2014. Molecular characterization of domestic and exotic Potato virus S isolates and a global analysis of genomic sequences. Archives of Virology 159:2115–2122. DOI 10.1007/s00705-014-2022-6
  • Lin, Y-H., D. A. Johnson, and H.R. Pappu. 2014. Effect of Potato virus Sinfection on late blight (Phytophtora infestans) in potato (Solanum tuberosum). Amer. J. of Potato Research. DOI 10.1007/s12230-014-9394-8. 
  • Naveed, K., N. Mitter, A. Dhingra, and H.R. Pappu. 2014. Comparative Analysis of virus-specific small RNA profiles of three biologically distinct strains of Potato virus Y (PVY) in PVY-infected potato (Solanum tuberosum) cv. Russet Burbank. Virus Research 191:153–160.
  • Ramesh, S.V., G. Raikhy, C.R. Brown, J.L. Whitworth, and H.R. Pappu. 2014. Complete genomic characterization of Potato mop top virus from the United States. Archives of Virology DOI 10.1007/s00705-014-2214-0
  • Sundaraj, S., R. Srinivasan, A.K. Culbreath, D.G. Riley, and H.R. Pappu. 2014. Host plant resistance against Tomato spotted wilt virus (Tospovirus:Bunyaviridae) in peanut (Arachis hypogaea) and its impact on virus transmission, virus population genetics, and vector feeding behavior and survival. Phytopathology 104:202-210.
  • Almeyda, C.V., S.G. Eid, D. Saar, M. Samuitiene, and H.R. Pappu. 2014. Genetic diversity among endogenous plant pararetroviral sequences from geographically diverse sources of dahlia (Dahlia spp.). Virus Genes 48: 140-152. DOI 10.1007/s11262-013-0997-9
  • Eid, S., and H.R. Pappu. 2014. Expression of endogenous para-retroviral genes and molecular analysis of the integration events in its plant host Dahlia variabilisVirus Genes 48:153-159. DOI 10.1007/s11262-013-0998-8
  • Eid, S., and H.R. Pappu. 2014. Biological studies of three caulimoviruses associated with dahlia (Dahlia variabilis). Canadian Journal of Plant Pathology. DOI: 10.1080/07060661.2013.871753
  • Vemulapati, B., K.L. Druffel, D. Husebye, S.D. Eigenbrode and H.R. Pappu. 2014. Development and application of ELISA assays for the detection of two members of the family LuteoviridaePea enation mosaic virus (genus Enamovirus) and Bean leafroll virus (genus Luteovirus). Annals of Applied Biology 165:130-136.
  • Zhai, Y., R. Miglino, R. Sorrentino, V. Masenga, D. Alioto, and H.R. Pappu. 2014. First Report of Eggplant mottled dwarf virus infection of Agapanthus sp. in Italy. New Disease Reports 29:20. http://dx.doi.org/10.5197/j.2044-0588.2014.029.020
  • Mitter, N., V. Koundal, S. Williams, and H.R. Pappu. 2013. Differential expression of virus-specific small RNAs in Tomato spotted wilt virus (Tospovirus:Bunyaviridae)-infected experimental and commercial hosts. PLoS ONE. Accepted for publication.
  • Sundaraj, S., R. Srinivasan, A.K. Culbreath, D.G. Riley, and H.R. Pappu. 2013. Host plant resistance against Tomato spotted wilt virus (TSWV) in peanut (Arachis hypogaea) and its impact on virus transmission, virus population genetics, and vector feeding behavior and survival. Phytopathology. Accepted for publication.
  • Kalischuk, M., B. Müller, A. Fusarod, D. Prüferc, P.M. Waterhoused, H.R. Pappu, and L.M. Kawchuk.2013. Molecular characterization of Rubus yellow net virus reveals that open reading frame 1 exhibits pathogenicity determinant properties. Virus Research. Accepted for publication.
  • Sengoda, V.G., J.L. Buchman, D.C. Henne, H.R. Pappu, and J.E. Munyaneza. 2013.“Candidatus Liberibacter solanacearum” titer over time in the potato psyllid, Bactericera cockerelli (Hemiptera: Triozidae), following acquisition from infected potato and tomato plants. Journal of Economic Entomology. In press.
  • Birithia, R., S. Subramanian, H. R. Pappu, J. Muthomi and R. D. Narla. 2013. Analysis of Iris yellow spot virus (IYSV, genus Tospovirus) replication in vector and non-vector thrips species. Plant Pathology DOI: 10.1111/ppa.12057
  • Bag, S., N. Mitter, S. Eid., and H.R. Pappu. 2012. Genetic complementation between two tospoviruses facilitates the systemic movement of a plant virus silencing suppressor in an otherwise restrictive host. PLoS ONE http://dx.plos.org/10.1371/journal.pone.0044803.
  • Media release: Sorensen, E. Viral alliances overcome plant defenses, WSU research finds. WSU Today http://news.wsu.edu/pages/publications.asp?Action=Detail&PublicationID=33422
  • Mandal, B., R. K. Jain, M. Krishnareddy, N.K. Krishna Kumar, K.S. Ravi, and H. R. Pappu. 2012. Emerging problems of tospoviruses (Bunyaviridae) and their management in the Indian subcontinent. Plant Disease 96:468-479.
  • Srinivasan, R., S. Sundaraj, H.R. Pappu, S. Diffie, D.G. Riley, and R.D Gitaitis. 2012. Transmission of Iris yellow spot virus by Frankliniella fusca and Thrips tabaci (Thysanoptera: Thripidae). Journal of Economic Entomology 105:40-47.
    DOI: http://dx.doi.org/10.1603/EC11094
  • Eid, S., C. V. Almeyda, D.E. Saar, K.L. Druffel, and H.R. Pappu. 2011. Genomic characterization of para-retroviral sequences in wild Dahlia spp. in natural habitats. Archives of Virology 156:2079–2084. DOI 10.1007/s00705-011-1076-y
  • Eid, S., D.E. Saar, K.L. Druffel, and H.R. Pappu. 2011. Plant para-retroviral sequences in wild Dahlia species in their natural habitats in Mexican mountain ranges. Plant Pathology 60, 378–383. DOI: 10.1111/j.1365-3059.2010.02367.x
  • Bag, S., K.L. Druffel and H.R. Pappu. 2010. Structure and genome organization of the large RNA of Iris yellow spot virus (genus Tospovirus, family Bunyaviridae). Archives of Virology 155:275–279 (DOI 10.1007/s00705-009-0568-5).
  • Sengoda, V.S., J.E. Munyaneza, J.M. Crosslin, J.L. Buchman, and H.R. Pappu. 2010. Phenotypic and etiological differences between psyllid yellows and zebra chip diseases of potato. American Journal of Potato Research 87:41–49 (DOI 10.1007/s12230-009-9115-x).
  • Lin, Y-H., K.L. Druffel, J. Whitworth, M.J. Pavek, and H.R. Pappu. 2009. Molecular characterization of two Potato Virus S isolates from late blight resistant genotypes of potato (Solanum tuberosum). Archives of Virology 154:1861-1863. DOI 10.1007/s00705-009-0486-6.
  • Bag, S., K.L. Druffel, T. Salewsky, and H.R. Pappu. 2009.  Nucleotide sequence and genome organization of the medium RNA of Iris yellow spot virus (genus Tospovirus, family Bunyaviridae) from the United States. Archives of Virology 154:715-718.
  • Pappu, H.R., R.A.C. Jones, and R.K. Jain. 2009. Global status of tospovirus epidemics in diverse cropping systems: Successes gained and challenges that lie ahead. Virus Research 141:219–236.