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Nina Shishkoff (PhD)
Foreign Disease-Weed Science Research
Research Plant Pathologist

Phone: (301) 619-2877
Fax: (301) 619-2880
Room 203

1301 DITTO AVENUE
BLDG 1301
FORT DETRICK, MD 21702
Projects
Biology, Epidemiology, and Detection of Emerging Plant Pathogenic Oomycetes
In-House Appropriated (D)
  Accession Number: 432647
Identification, Biology, Epidemiology, and Control of Foreign and Emerging Fungal Plant Pathogens
In-House Appropriated (D)
  Accession Number: 432679

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
One clonal lineage of Calonectria pseudonaviculata is primarily responsible for the boxwood blight epidemic in the United States Reprint Icon - (Peer Reviewed Journal)
Castroagudín, V., Weiland, J.E., Baysal-Gurel, F., Cubeta, M., Daughtrey, M., Gauthier, N., Lamondia, J., Luster, D.G., Hand, F., Shishkoff, N., Wiiliams-Woodward, J., Leblanc, N., Yang, X., Crouch, J. 2020. One clonal lineage of Calonectria pseudonaviculata is primarily responsible for the boxwood blight epidemic in the United States. Phytopathology. https://doi.org/10.1094/PHYTO-04-20-0130-R.
The oospore stage of Plasmopara obducens Reprint Icon - (Peer Reviewed Journal)
Shishkoff, N. 2019. The oospore stage of Plasmopara obducens. Mycologia. https://doi.org/10.1080/00275514.2019.1601986.
Impact of ammonia on Calonectria pseudonaviculata and C. henricotiae, causal agents of boxwood blight Reprint Icon - (Peer Reviewed Journal)
Harvey, R.J., Davis, D.D., Shishkoff, N., Pecchia, J.A. 2019. Impact of ammonia on Calonectria pseudonaviculata and C. henricotiae, causal agents of boxwood blight. Compost Science and Utilization. https://doi.org/10.1080/1065657X.2019.1586595.
Coccinonectria pachysandricola, causal agent of a new foliar blight disease of Sarcococca hookeriana Reprint Icon - (Peer Reviewed Journal)
Salgado-Salazar, C., Shishkoff, N., LeBlanc, N., Ismaiel, A.A., Collins, M., Cubeta, M.A., Crouch, J. 2018. Coccinonectria pachysandricola, causal agent of a new foliar blight disease of Sarcococca hookeriana. Plant Disease. 103(6):1337-1346. https://doi.org/10.1094/PDIS-09-18-1676-RE.
Spinach downy mildew: Advances in our understanding of the disease cycle and prospects for disease management Reprint Icon - (Peer Reviewed Journal)
Kandel, S.L., Mou, B., Shishkoff, N., Shi, A., Subbarao, K.V., Klosterman, S.J. 2019. Spinach downy mildew: Advances in our understanding of the disease cycle and prospects for disease management. Plant Disease. 103:791-803. https://doi.org/10.1094/PDIS-10-18-1720-FE.
Survival of lab grown Calonectria pseudonaviculata microsclerotia during small scale composting Reprint Icon - (Peer Reviewed Journal)
Harvey, R.J., Davis, D.D., Shishkoff, N., Pecchia, J.A. 2019. Survival of lab grown Calonectria pseudonaviculata microsclerotia during small scale composting. Bioresource Technology. 27(1):24-34. https://doi.org/10.1080/1065657X.2018.1536865.
Thermal sensitivity of Calonectria henricotiae and Calonectria pseudonaviculata conidia and microsclerotia Reprint Icon - (Peer Reviewed Journal)
Miller, M.E., Shishkoff, N., Cubeta, M.A. 2018. Thermal sensitivity of Calonectria henricotiae and Calonectria pseudonaviculata conidia and microsclerotia. Mycologia. https://doi.org/10.1080/00275514.20.
Downy mildew: a serious disease threat to rose health worldwide Reprint Icon ()
Salgado-Salazar, C., Shishkoff, N., Daughtrey, M.L., Palmer, C., Crouch, J. 2018. Downy mildew: a serious disease threat to rose health worldwide. Plant Disease. https://doi.org/10.1094/PDIS-12-17-1968-FE.
Susceptibility of boxwood accessions from the National Boxwood Collection to Boxwood Blight and potential for differences between Calonectria pseudonaviculata and C. henricotiae - (Peer Reviewed Journal)
Lamondia, J.A., Shishkoff, N. 2017. Susceptibility of boxwood accessions from the National Boxwood Collection to Boxwood Blight and potential for differences between Calonectria pseudonaviculata and C. henricotiae. Horticultural Science. 52(6):873–879.
Survival of Calonectria pseudonaviculata in leaves, twigs, and discrete microsclerotia in sand at two moisture levels and five temperatures Reprint Icon - (Peer Reviewed Journal)
Shishkoff, N. 2016. Survival of Calonectria pseudonaviculata in leaves, twigs, and discrete microsclerotia in sand at two moisture levels and five temperatures. Plant Disease. 100:2018-2024. https://doi.org/10.1094/PDIS-09-15-1098-RE.
Survival of microsclerotia of Calonectria pseudonaviculata and C. henricotiae exposed to sanitizers Reprint Icon - (Peer Reviewed Journal)
Shishkoff, N. 2016. Survival of microsclerotia of Calonectria pseudonaviculata and C. henricotiae exposed to sanitizers. Plant Health Progress. 17:13-17. doi:10.1094/PHP-RS-15-0038.
Pyracantha ‘Mohave’ fruit infection by Phytophthora ramorum and transmission of the pathogen from infected fruit to roots of Viburnum tinus Reprint Icon - (Peer Reviewed Journal)
Tooley, P.W., Browning, M.E., Shishkoff, N. 2016. Pyracantha ‘Mohave’ fruit infection by Phytophthora ramorum and transmission of the pathogen from infected fruit to roots of Viburnum tinus. Plant Disease. 100:555-560.
Evaluating boxwood (Buxus spp.) susceptibility to Calonectria pseudonaviculata by inoculating cuttings from the National Boxwood Collection at the U.S. National Arboretum - (Peer Reviewed Journal)
Shishkoff, N., Daughtrey, M.L., Olsen, R.T., Aker, S.M. 2015. Evaluating boxwood (Buxus spp.) susceptibility to Calonectria pseudonaviculata by inoculating cuttings from the National Boxwood Collection at the U.S. National Arboretum. Plant Health Progress. 16:11-15.
Effect of growth-inhibiting compounds on recovery of Phytophthora ramorum from infected foliage over time, on root colonization and production of inoculum from plant roots Reprint Icon - (Peer Reviewed Journal)
Shishkoff, N. 2014. Effect of growth-inhibiting compounds on recovery of Phytophthora ramorum from infected foliage over time, on root colonization and production of inoculum from plant roots. Plant Health Progress. 15:36.
Boxwood Blight: A new scourge, a new paradigm for collaborative research ()
Palmer, C., Shishkoff, N. 2014. Boxwood Blight: A new scourge, a new paradigm for collaborative research. Outlooks on Pest Management. 25:230-236.
Root susceptibility and inoculum production from roots of Eastern United States oak species to Phytophthora ramorum - (Peer Reviewed Journal)
Widmer, T.L., Shishkoff, N., Dodge, S.C. 2012. Root susceptibility and inoculum production from roots of Eastern United States oak species to Phytophthora ramorum. Plant Disease. 96:1675-1682.
Susceptibility of some common container weeds to Phytophthora ramorum - (Peer Reviewed Journal)
Root susceptibility and inoculum production from roots of eastern oak species to Phytophthora ramorum - (Abstract Only)
Widmer, T.L., Shishkoff, N., Dodge, S.C. 2010. Root susceptibility and inoculum production from roots of eastern oak species to Phytophthora ramorum. Phytopathology. 100/S136.
Adaptation of a Phytophthora ramorum Real-Time Polymerase Chain Reaction Assay based on a mitochondrial gene region for use on the Cepheid SmartCycler - (Peer Reviewed Journal)
Sechler, K.E., Carras, M.M., Shishkoff, N., Tooley, P.W. 2010. Adaptation of a Phytophthora ramorum Real-Time Polymerase Chain Reaction Assay based on a mitochondrial gene region for use on the Cepheid SmartCycler. Plant Health Progress. 2010 - 0212-01-RS.
A test system to quantify inoculum in runoff from Phytophthora ramorum-infected plant roots - (Abstract Only)
Standardizing the Nomenclature for Clonal Lineages of the Sudden Oak Death Pathogen, Phytophthora ramorum - (Peer Reviewed Journal)
Grunwald, N.J., Goss, E.M., Ivors, K., Garbelotto, M., Martin, F.N., Prospero, S., Hansen, E., Bonants, P., Hamelin, R., Chastagner, G., Werres, S., Rizzo, D.M., Abad, G., Beales, P., Bilodeau, G.J., Blomquist, C., Brasier, C., Briere, S., Chandelier, A., Davidson, J.M., Denman, S., Elliott, M., Fichtner, E.J., Frankel, S.J., Goheen, E.M., De Gruyter, H., Heungens, K., James, D., Kanaskie, A., Mcwilliams, M., Moralejo, E., Osterbauer, N.K., Palm, M.E., Parke, J.L., Shamoun, S.F., Shishkoff, N., Tooley, P.W., Vettraino, A., Webber, J., Widmer, T.L. 2009. Standardizing the nomenclature for clonal lineages of the sudden oak death pathogen, Phytophthora ramorum. Phytopathology. 99:792-795.
Propagule production by Phytophthora ramorum on infected leaves of lilac (Syringa vulgaris) - (Peer Reviewed Journal)
Shishkoff, N. 2009. Propagule production by Phytophthora ramorum on infected leaves of lilac (Syringa vulgaris). Plant Disease. 93:475-480.
Recovery Plan for Phytophthora kernoviae Causing Bleeding Trunk Cankers, Leaf Blight and Stem Dieback in Trees and Shrubs ()
Benson, M., Ivors, K., Koch, F., Fichtner, E., Garbelotto, M., Rizzo, D., Tjosvold, S., Hansen, E., Parke, J., Hong, C., Chastagner, G., Jeffers, S., Woodward-Williams, J., Kim, S., Britton, K., Denitto, G., Frankel, S., Micales, J., Grunwald, N.J., Martin, F.N., Shishkoff, N., Smith, K.L., Tooley, P.W., Widmer, T.L., Bulluck, R., Burnett, G., Ferguson, L., Fowler, G., Garrett, L., Jones, J., Magarey, R., Randall-Schadel, B., Cardwell, K., Draper, M., Chand-Goyal, T. 2009. Recovery Plan for Phytophthora kernoviae Causing Bleeding Trunk Cankers, Leaf Blight and Stem Dieback in Trees and Shrubs. Government Publication/Report. Available at: http://www.ars.usda.gov/SP2UserFiles/Place/00000000/opmp/P.%20kernoviae%2081100.pdf
Development and Validation of a Tissue based Panel for the P. ramorum Proficiency Testing Program - (Abstract Only)
Mavrodieva, V., Negi, S., Picton, D., Levy, L., Tooley, P.W., Shishkoff, N., Luster, D.G. 2008. Development and Validation of a Tissue based Panel for the P. ramorum Proficiency Testing Program. Phytopathology. 98:S100
Sporulation on plant roots by Phytophthora ramorum - (Abstract Only)
Shishkoff, N. 2008. Sporulation on plant roots by Phytophthora ramorum. Phytopathology. 98:S145
Environmental parameters affecting inoculum production from lilac leaf pieces infected with Phytophthora ramorum - (Proceedings)
Shishkoff, N. 2008. Environmental parameters affecting inoculum production from lilac leaf pieces infected with Phytophthora ramorum. Phytopathology. 96:S107 . Sudden Oak Death Science Symposium.
Susceptibility of some lilac cultivars and other members of the Oleaceae to Phytophthora ramorum - (Peer Reviewed Journal)
Shishkoff, N. 2007. Susceptibility of some lilac cultivars and other members of the Oleaceae to Phytophthora ramorum. Plant Health Progress. 10.1094/PHP-2007-1101-2-RS
Sudden Oak Death (Phytophthora ramorum) and lilacs ()
Shishkoff, N. 2007. Sudden Oak Death (Phytophthora ramorum) and lilacs. Lilacs- Quarterly Journal of the Iternational Lilac Society. Fall 2007 Edition.
PERSISTENCE OF PHYTOPHTHORA RAMORUM IN SOIL MIX AND ROOTS OF NURSERY ORNAMENTALS - (Peer Reviewed Journal)
Shishkoff, N. 2007. Persistence of phytophthora ramorum in soil mix and roots of nursery ornamentals. Plant Disease. 91:1245-1249
Identification of powdery mildew fungi anno 2006 - (Peer Reviewed Journal)
Heffer, V., Powelson, M., Johnson, K., Shishkoff, N. 2006. Identification of powdery mildew fungi anno 2006. The Plant Health Instructor DOI:1094/PHI-I-2006-0706-01.
DENSITY OF PHYTOPHTHORA RAMORUM CHLAMYDOSPORES IN SOIL NECESSARY TO CAUSE INFECTION - (Abstract Only)
Colburn, G.C., Shishkoff, N. 2006. Density of phytophthora ramorum chlamydospores in soil necessary to cause infection. Phytopathology: 96:S25
Behavior of lilac leaves infected with Phytophthora ramorum when placed on the surface of nursery pots - (Abstract Only)
Shishkoff, N. 2006. Behavior of lilac leaves infected with Phytophthora ramorum when placed on the surface of nursery pots. Phytopathology. 96:S107.
DIRECT OBSERVATION OF INFECTION OF VIBURNUM ROOTS BY P. RAMORUM USING A PETRI DISH RHIZOTRON - (Abstract Only)
SUSCEPTIBILITY OF CAMELLIA TO PHYTOPHTHORA RAMORUM, THE "SUDDEN OAK DEATH" ORGANISM - (Peer Reviewed Journal)
Shishkoff, N. 2006. Susceptibility of camellia to phytophthora ramorum, the "sudden oak death" organism. Plant Health Progress. DOI=10.1094/PHP-2006-03S-01-RS
SURVIVABILITY AND PATHOGENICITY OF PHYTOPHTHORA RAMORUM CHLAMYDOSPORES IN SOIL - (Abstract Only)
Colburn, G.C., Sechler, K.E., Shishkoff, N. 2005. Survivability and pathogenicity of Phytophthora ramorum chlamydospores in soil [abstract]. Phytopathology. 95:S20.
THE EFFECT OF SYSTEMIC FUNGICIDES ON DETECTION BY CULTURING OF PHYTOPHTHORA RAMORUM - (Abstract Only)
Shishkoff, N. 2005. The effect of systemic fungicides on detection by culturing of Phytophthora ramorum [abstract]. Phytopathology. 95:S96.
SUSCEPTIBILITY TO PHYTOPHTHORA RAMORUM OF ROOTS AND SHOOTS OF COMMON CONTAINER WEEDS - (Abstract Only)
Shishkoff, N., Senesac, A.F. 2005. Susceptibility to Phytophthora ramorum of roots and shoots of common container weeds [abstract]. Phytopathology. 95:S96.
SUSCEPTIBILITY OF SELECTED LILAC (SYRINGA L.) CULTIVARS TO PHYTOPHTHORA RAMORUM, THE SUDDEN OAK DEATH PATHOGEN - (Abstract Only)
Shishkoff, N. 2006. Susceptibility of selected lilacs (syringa L.) cultivars to Phytophthora Ramorum, the sudden oak death pathogen. Phytopathology 95:S160.
WHAT'S NEW IN IPM FOR AZALEAS? ()
The Azalean 26:64-66
SUSCEPTIBILITY OF CAMELLIA TO PHYTOPHTHORA RAMORUM, THE SUDDEN OAK DEATH PATHOGEN - (Abstract Only)
Shishkoff, N. 2005. Susceptibility of Camellia to Phytophthora ramorum, the sudden oak death pathogen [abstract]. Phytopathology. 95:S157.
PERSISTENCE OF PHYTOPHTHORA RAMORUM IN NURSERY PLANTS AND SOIL - (Abstract Only)
Shishkoff, N., Tooley, P.W. 2004. Persistence of Phytophthora ramorum in nursery plants and soil. Phytopathology. 94:S95. Publication no. P-2004-0649-AMA.
FIRST REPORT OF POWDERY MILDEW, CAUSED BY ERYSIPHE VIBURNI, ON VIBURNUM TINUS IN CALIFORNIA ()
Plant Disease 88:425