Subbarao, Krishna V.

Plant Pathologist
Cooperative Extension Specialistt
Office Phone: 831-755-2890
FAX: 830-755-2814
E-Mail: kvsubbarao@ucdavis.edu

Biography

B.S. University of Mysore, India 1976 Chemistry, Botany, Zoology
M.S. University of Mysore, India 1978 Botany (Plant Pathology)
Ph.D. Louisiana State University 1989 Plant Pathology

Area of Specialization

Ecology, epidemiology and integrated control of fungal diseases of vegetables.

Research

Dr. Subbarao's primary research interests are in ecology and epidemiology of soil- and airborne pathogens of cool-season vegetable crops. His current research is focused on the inoculum dynamics of various soilborne pathogens, especially those caused by Sclerotinia minor, S. sclerotiorum, and Verticillium dahliae as influenced by cultivars, tillage practices, irrigation systems, and crop rotation. Dr. Subbarao has also has an active research program on the use of GIS for disease management.

Selected Publications:

Sporulation by Bremia lactucae is affected by temperature, relative humidity and wind in controlled conditions. Su, H., A. H. C. van Bruggen, K. V. Subbarao, H. Scherm. 2004. Phytopathology 94:396-401.

Analyses of the relationships between lettuce downy mildew and weather variables using geographic Information systems. Wu, B. M., A. H. C. van Bruggen, and K. V. Subbarao. 2005. Plant Disease 89:90-96.

Comparative analyses of lettuce drop epidemics caused by Sclerotinia minor and S. sclerotiorum. Hao, J. J. and K. V. Subbarao. 2005. Plant Disease 89:717-725.

Seedborne transmission of Verticillium dahliae in lettuce. Vallad, G. E., R. G. Bhat, S. T. Koike, K. V. Subbarao, and E. J. Ryder. 2005. Plant Disease 89:317-324.

Mutations in VMK1, a mitogen- activated protein kinase gene, affect colony morphology, microsclerotia formation and pathogenicity in Verticillium dahliae. Rauyaree, P., R. G. Bhat, M. D. Ospina-Giraldo, S. J. Grant, K. Dobinson, K. V. Subbarao, and S. Kang. 2005. Current Genetics 48:109-116.

Analyses of spatial patterns in plant pathology. 94.2005 Wu, B. M., and K. V. Subbarao. Pages 167-188 in: Recent Research Developments in Plant Pathology. Research Signpost, Trivandrum, India.

Spatial and temporal dynamics of lettuce drop incidence and Sclerotinia minor sclerotia in a crop rotation system. Hao, J. J. and K. V. Subbarao. 2006. Plant Disease 90:269-278.

Phylogenetic analyses of phytopathogenic isolates of Verticillium. Qin, Q-M., Vallad, G. E., Wu, B. M., Subbarao, K. V. 2006. Phytopathology 96: in press.

Spatial analysis based on variance of moving window averages. Wu, B. M., K. V. Subbarao, F. J. Ferrandino, and J. J. Hao. 2006. Journal of Phytopathology: in press.

Effects of irrigation and tillage on the spatial dynamics of Sclerotinia minor sclerotia and lettuce drop incidence. Wu, B. M., and K. V. Subbarao. 2003. Phytopathology 93: (in press).

Characterization of Verticillium dahliae isolates and wilt epidemics in pepper. Bhat, R. G., R. F., Smith, S. T. Koike, B. M. Wu, and K. V. Subbarao. 2003. Plant Disease 87:789-797.

Germination of Sclerotinia minor and S. sclerotiorum sclerotia under various soil moisture and temperature combinations. Hao, J. J., K. V. Subbarao, and J. M. Duniway. 2003. Phytopathology 93:443-450.

Effects of broccoli rotation on lettuce drop caused by Sclerotinia minor and on the sclerotial population in soil. Hao, J. J., K. V. Subbarao, and S. T. Koike. 2003. Plant Disease 87:159-166.

Methyl bromide alternatives: meeting the deadlines - Introduction. Subbarao, K. V. 2002. Phytopathology 93:1334-1336.

Germination of Sclerotinia minor and S. sclerotiorum Sclerotia Under Various Soil Moisture and Temperature Combinations. 2002 Hao, J. J., K. V. Subbarao, and J. M. Duniway. Phytopathology 92: in press.

Methyl Bromide Alternatives: Meeting the Deadlines Introduction. 2002 Subbarao, K. V. Phytopathology 92: in press.

Effects of Broccoli Rotation on Lettuce Drop Caused by Sclerotinia minor and on the Sclerotial Population in Soil. Hao, J. J., K. V. Subbarao, and S. T. Koike. 2002 Plant Disease 86: in press.

Incorporation of Temperature and Solar Radiation Thresholds to Modify a Downy Mildew Warning System. Wu, B. M., A. H. C. van Bruggen, K. V. Subbarao, and H. Scherm. 2002 Phytopathology 92:631-636.

Internet-based database for cataloguing the genetic and phenotypic diversity of plant pathogens. Kang, S., J. E. Ayers, D. M. Geiser, G. Kuldau, G. W. Moorman, E. Mullins, J. C. Correll, G. Deckert, Y-H. Lee, H. Leung, M. Levy, K. O’Donnell, F. N. Martin, and K. V. Subbarao. 2002 Phytopathology 92:232-236.

Interactions between Myxobacteria, Plant Pathogenic Fungi and Biocontrol Agents. Bull, C. T., K. G. Shetty, and K. V. Subbarao. 2002 Plant Disease 86:889-896.

Validation of Weather and Leaf Wetness Forecasts for a Lettuce Downy Mildew Warning System. Wu, B. M., A. H. C. van Bruggen, K. V. Subbarao, and G. G. H. Pennings.2001 Can. J. of Plant Pathol. 23:371-383.

Comparison of Three Fungicide Spray Advisories for Lettuce Downy Mildew. 2001 Wu, B. M., K. V. Subbarao, A. H. C. van Bruggen, and S. T. Koike. Plant Disease 85:895-900.

Reaction of Broccoli to Verticillium dahliae Isolates from Various Hosts. Bhat, R. G., and K. V. Subbarao. 2001. Plant Disease 85:141-146.

Spatial Analysis of Lettuce Downy Mildew in the Salinas Valley Using Geostatistics and GIS. Wu, B. M., A. H. C. van Bruggen, K. V. Subbarao, and G. G. H. Pennings. 2001. Phytopathology 91:134-142.

Effects of Irrigation and Verticillium dahliae on Cauliflower Root and Shoot Growth Dynamics. Xiao, C. L., and K. V. Subbarao. 2000. Phytopathology 90:995-1004.

Factors Affecting the Survival of Bremia lactucae Sporangia Deposited on Lettuce Leaves. Wu, B. M., K. V. Subbarao, and A. H. C. van Bruggen. 2000. Phytopathology 90:90:827-833.

Mechanism of Broccoli-Mediated Verticillium Wilt Reduction in Cauliflower. Shetty, K. G., J. C. Hubbard, O. C. Huisman, and K. V. Subbarao. 2000. Phytopathology 90:305-310.

Spore release of Bremia lactucae is affected by timing of light initiation and decrease in relative humidity. Su, H., A. H. C. van Bruggen, and K. V. Subbarao. 2000. Phytopathology 90:67-71.

Host range specificity in Verticillium dahliae. Bhat, R. G., and K. V. Subbarao. 1999. Phytopathology 89:1218-1225.