|Plant Pathology and Crop Physiology Department|
|LSU Campus 302 Life Sciences Bldg.
Baton Rouge, LA 70803
Refereed Journal Articles
LaBonte, D., Clark, C., Villordon, A., Cannon, J., Hoy, M., Sistrunk, M., Freeman, E., and Roberts, G. 2004. Yield of four generations of virus-tested sweetpotato. HortTechnology 14:1 - 3.
Carroll, H. W., Villordon, A. Q., Clark, C. A., LaBonte, D. R., and Hoy, M. W. 2004. Studies on Beauregard sweetpotato clones naturally infected with viruses. Int. J. Pest. Mgmt. 50:101 - 106.
Lotrakul, P., Valverde, R. A., and Clark, C. A. 2003. Properties of a begomovirus isolated from sweet potato [Ipomoea batatas (L.) Lam.] infected with Sweet potato leaf curl virus. Revista Mexicana de Fitopatologia 21:128 - 136.
Zhang, X., Clark, C. A., and Pettis, G. S. 2003. Interstrain inhibition in the sweet potato pathogen Streptomyces ipomoeae: Purification and characterization of a highly specific bacteriocin and cloning of its structural gene. Appl. Environ. Microbiol. 69:2201 - 2208.
Villordon, A., Q., Cannon, J. M., Carroll, H. L., Franklin, J. W., Clark, C. A., and LaBonte, D. R. 2003. Sweetpotato 'Beauregard' mericlones vary in yield, vine characteristics, and storage root size and shape attributes. HortScience 38:1089 - 1092.
Souto, E. R., Sim, J. Chen, J., Valverde, R. A., and Clark, C. A. 2003. Properties of Strains of Sweet potato feathery mottle virus and Two Newly Recognized Potyviruses Infecting Sweet Potato in the United States . Plant Disease 87:1226 - 1232.
Holmes, G. J., and Clark, C. A. 2002. First report of Geotrichum candidum as a pathogen of sweetpotato storage roots from flooded fields in North Carolina and Louisiana Plant Disease 86:695.
Harrison, H. F., Peterson, J. K., Clark, C. A., and Snook, M. E. 2001. Sweetpotato periderm components inhibit in vitro growth of root rotting fungi. Hortscience 36: 927-930.
Book and Book Chapter Contributions
Clark, C. A., Valverde, R. A., Fuentes, S., Salazar, L. F., and Moyer, J. W. 2002. Research for improved management of sweetpotato pests and diseases: Cultivar decline. Pages 103 - 112 in; Ames , T., ed. Proc. 1st Internat. Symp. on Sweetpotato, Acta Hort. 583.
Lotrakul, P., Valverde, R. A., Clark, C. A., Hurtt, S., and Hoy, M. W. 2002. Sweetpotato leaf curl virus and related geminiviruses in sweetpotato. Pages 135-141 in; Ames , T., ed. Proc. 1st Internat. Symp. on Sweetpotato, Acta Hort. 583.
Clark, C. A., Hoy, M. W., Valverde, R. A., La Bonte, D. R., and Cannon, J. M. 2002. Effects of viruses on sweetpotatoes in Louisiana, USA. Pages 238-241 in; Nakatani, M., and Komaki, K., eds. Potential of Root Crops for Food and Industrial Resources, Proc. Twelfth Symp. Internat. Soc. Trop. Root Crops, Sept. 10-16, 2000.
Loria, R., Clark, C. A., Bukhalid, R. A., and Fry, B. A. 2001. III. Gram-positive bacteria. B. Streptomyces. Pages 236 - 249 in: Schaad, N. W., Jones, J. B., and Chun, W., eds. Laboratory Guide for Identification of Plant Pathogenic Bacteria, 3rd Edition. APS Press, The American Phytopathological Society, St. Paul , MN .
Clark, C. A., and Valverde, R. A. 2001. Viruses and sweetpotato cultivar decline in Louisiana , USA . Pages 62 - 69 in; Nakazawa, Y., and Ishiguro, K., eds. International Workshop on Sweetpotato Cultivar Decline Study, Proceedings, Kyushu National Agricultural Experiment Station, Miyakonjo , Japan .
Clark, Christopher. 2000. Sweetpotato black rot. Pages 992-992 in: Maloy, O. C., and Murray, T. D., eds. Encyclopedia of Plant Pathology. John Wiley & Sons, Inc.
Research Contribution: In addition to the work documented in the references below, over the last 25 years, the multidisciplinary sweetpotato breeding team in the LSU AgCenter has released several cultivars of sweetpotato that have had disease resistance. In addition to Beauregard, which is currently grown on over 80% of US acreage and in several other countries, releases have included: Eureka, Travis, Hernandez, and Bienville. We have also worked with the personnel at the Sweet Potato Research Station in Chase, LA to develop a virus-tested foundation seed program which has been providing farmers since 1999.
I teach Plant Health 7011 – Phytobacteriology
I am organizing a newly approved course, PLHL 8800 - Practicum in Plant Pathology
Participated in the past in teaching PLHL 4013 - Diseases of Economic Crops
The lab on bacterial diseases in PLHL 4000, General Plant Pathology
Committee Assignments (University, Experiment Station and Departmental):
AgCenter Faculty Council member (2003-2004)
Plant Pathology Course and Curriculum Committee member
Postdoctoral Research Associate, Department of Plant Pathology, North Carolina State University, Raleigh, NC, 1976-77
Doctor of Philosophy, Cornell University - 1976
Master of Science, Cornell University - 1973
Bachelor of Science, Cornell University - 1970