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Oswaldo Ochoa

Oswaldo Ochoa

4212A UC Davis Genome Center-GBSF
451 Health Sciences Drive
University of California
Davis, California 95616

Phone: (530)752-8889
Fax: (530)752-9658
Email: oeochoa@ucdavis.edu

Position Staff Research Associate IV
Education Bachelor of Science in Agronomy. University of Costa Rica, 1971-1975
Master of Science in Vegetable Crops, University of California, Davis. 1983
Research Topic Lettuce Breeding. Molecular markers, QTL analysis of domestication traits. Plant phenotyping. Plant Pathogen interaction. Plant Genomics.

--- Key Publications ---

  • Argyris J, Truco MJ, Ochoa O, McHale L, Dahal P, Van Deynze A, Michelmore RW, Bradford KJ. (2011A gene encoding an abscisic acid biosynthetic enzyme (LsNCED4) collocates with the high temperature germination locus Htg6.1 in lettuce (Lactuca sp.). Theor Appl Genet. 2011. 122(1):95-108.     
  • Simko, I., Pechenick, D.A., McHale, L.K., Truco, M.J., Ochoa, O.E., Michelmore, R.W., Scheffler, B.E.  (2010Development of molecular markers for marker-assisted selection of dieback disease resistance in lettuce (Lactuca sativa). Acta Horticulturae. 2010. 859:401-408.  
  • Simko I, Pechenick DA, McHale LK, Truco MJ, Ochoa OE, Michelmore RW, Scheffler BE. (2009Association mapping and marker-assisted selection of the lettuce dieback resistance gene Tvr1. BMC Plant Biol. 2009. 9:135.     
  • Wroblewski T, Caldwell KS, Piskurewicz U, Cavanaugh KA, Xu H, Kozik A, Ochoa O, McHale LK, Lahre K, Jelenska J, Castillo JA, Blumenthal D, Vinatzer BA, Greenberg JT and Michelmore RW (2009Comparative large-scale analysis of interactions between several crop species and the effector repertoires from multiple pathovars of Pseudomonas and Ralstonia. Plant Physiology. 2009. 10.1104/pp.109.  
  • McHale LK, Truco MJ, Kozik A, Wroblewski T, Ochoa OE, Lahre KA, Knapp SJ, Michelmore RW. (2009The genomic architecture of disease resistance in lettuce. Theor Appl Genet. 2009. 118(3):565-80.     
  • Michelmore, R., Ochoa, O., and Wong, J. (2009Bremia lactucae and lettuce downy mildew. In: Oomycete Genetics and Genomics: Diversity, Plant and Animal Interactions, and Toolbox.  S. Kamoun and K. Lamour Eds. John Wiley, NJ. 2009.   
  • Wroblewski T, Piskurewicz U, Tomczak A, Ochoa O, Michelmore RW. (2007Silencing of the major family of NBS-LRR-encoding genes in lettuce results in the loss of multiple resistance specificities. Plant J. 2007. 51(5):803-18.     
  • Koike ST, Ochoa O (2007Downy mildew caused by Bremia lactucae on strawflower (Helichrysum bracteatum) in California.  PLANT DISEASE. 2007. 91 (3): 326-326 MAR.   
  • Truco MJ, Antonise R, Lavelle D, Ochoa O, Kozik A, Witsenboer H, Fort SB, Jeuken MJ, Kesseli RV, Lindhout P, Michelmore RW, Peleman J. (2007A high-density, integrated genetic linkage map of lettuce (Lactuca spp.). Theor Appl Genet. 2007. 115(6):735-46     
  • Argyris J, Dahal P, Truco MJ, Ochoa O, Still DW, Michelmore RW, Bradford KJ (2007Genetic analysis of lettuce seed thermoinhibition. Acta Horticulturae 2007.   
  • Kuang, H., Ochoa, O.E., Nevo, E., Michelmore, R.W.  (2006The disease resistance gene Dm3 is infrequent in natural populations of Lactuca serriola due to deletions and frequent gene conversions at the RGC2 locus. Plant J. 2006. 47(1):38-48     
  • Bushman, B.S., Scholte, A.A., Cornish, K., Scott, D.J., Brichta, J.L., Vederas, J.C., Ochoa, O., Michelmore, R.W., Shintani, D., (2006Identification and characterization of natural rubber from two Lactuca species.  Phytochemistry 2006. 67:2590-2596  
  • JINGUO HU; OCHOA Oswaldo E.; TRUCO Maria Jos??; VICK Brady A. (2005Application of the TRAP technique to lettuce (Lactuca sativa L.) genotyping. Euphytica. 2005. ; vol. 144, pp. 225-235  
  • Grube, Rebecca C.; Ochoa, Oswaldo E.  (2005Comparative genetic analysis of field resistance to downy mildew in the lettuce cultivars 'Grand Rapids' and 'Iceberg'  Euphytica. 2005. 142 (3) : 205-215.  
  • Argyris J, Truco MJ, Ochoa O, Knapp SJ, Still DW, Lenssen GM, Schut JW, Michelmore RW, Bradford KJ. (2005Quantitative trait loci associated with seed and seedling traits in Lactuca. Theor Appl Genet. 2005. Nov;111(7):1365-1376.      
  • Hu, Jinguo; Ochoa, Oswaldo E.; Truco, Maria Jose, et al  (2005Application of the TRAP technique to lettuce (Lactuca sativa L.) genotyping. Euphytica. 2005. 144 (3) : 225-235.   
  • Brown, S., Koike, S., Ochoa, O., Laemmlen, F. and Michelmore, R.W.  (2004Insensitivity to the fungicide, fosetyl-aluminum, in California isolates of lettuce downy mildew, Bremia lactucae. Plant Disease.  2004. 46:1059-1069  
  • Sicard, D., Legg, E.J., Brown, S., Babu, N., Ochoa, O., Michelmore, R.W.  (2003A genetic map of the lettuce downy mildew fungus, Bremia lactucae constructed from molecular markers and avirulence genes. Fungal Genetics and Biology. 2003. 39:16-30     
  • Saltveit M.E., Ochoa, O., Reinaldo Campos-Vargas, R., and Richard Michelmore, R.W.  (2003Lines of lettuce selected for ethylene insensitivity at the seedling stage displayed variable responses to ethylene or wounding as mature heads. Postharvest Biology and Technology.  2003. 27:277-283  
  • Moreno-Vaquez, S., Ochoa, O., Faber, N., Chao, S., Jacobs, J.M.E., Maisonneuve, B., Kesseli, R., Michelmore, R.W.  (2003SNP-based codominant markers for a recessive gene conferring resistance to corky root rot (Rhizomonas suberifaciens) in lettuce (Lactuca sativa). Genome. 2003. 46:1059-1069     
  • Shen, K.A., Chin, D.B., Arroyo-Garcia, R., Ochoa, O.E., Lavelle, D.O., Wroblewski, T., Meyers B.C., and Michelmore, R.W.  (2002Dm3 is one member of a large constitutively-expressed family of NBS-LRR encoding genes.  Mol Plant Microbe Interact. 2002. 15:251-261     
  • Chin, D.B., Arroyo-Garcia, R., Ochoa, O., Kesseli, R.V., Lavelle, D.O., Michelmore, R.W.  (2001Recombination and spontaneous mutation at the major cluster of resistance genes in lettuce (Lactuca sativa). Genetics. 2001. 157:831-849     
  • Johnson, W.C., Jackson, L.E. Ochoa, O., van Wijk, R., Peleman, J., St.Clair, D.A., Michelmore, R.W.  (2000A shallow-rooted crop and its wild progenitor differ at loci determining root architecture and deep soil water extraction.  Theor. Appl. Genet. 2000. 101:1066-1073  
  • Okubara, P.A., Arroyo-Garcia, R., Shen, K.A., Mazier, M. Meyers, B.C., Ochoa, O., Kim, Shinje, S., Yang, C.-H., Michelmore, R.W. (1997A transgenic mutant of Lactuca sativa (lettuce) with a T-DNA tightly linked to the loss of downy mildew resistance.  Molec Plant Microbe Interact. 1997. 10:970-977     
  • Okubara PA, Anderson PA, Ochoa OE, Michelmore RW. (1994Mutants of downy mildew resistance in Lactuca sativa (lettuce). Genetics.  1994. Jul;137(3):867-74.     
  • Michelmore, R.W., Anderson, P.A., Witsenboer, H., Kesseli, R.V., Paran, I., Francis, D.M. and Ochoa, O.  (1993Molecular markers and genome analysis in the manipulation of lettuce downy mildew.  In: Advances in Molecular Genetics of Plant Microbe Interactions 1993. 2:517-523  
  • McGuire, P., E. Ryder, R. Michelmore, R. Clark, R. Antle, G. Emery, R. Hannan, R. Kesseli, E. Kurtz, O. Ochoa, V. Rubatzky, W. Waycott.  (1993Genetic Resources of Lettuce and Lactuca Species in California. An Assessment of the USDA and UC Collections and Recommendations for Long Term Security. Report No. 12. University of California Genetic Conservation Resources Program. 1993. Davis, CA. 40 pages.   
  • Kesseli, R.V., Paran, I., Ochoa, O., Wang, W.-C., and Michelmore, R.W.  (1993Linkage map of lettuce (Lactuca sativa).  In: Genetic Maps, 6th Ed. S. J. O'Brien (ed.). Cold Spring Ha 1993. 6: 229-233  
  • This, P. , Ochoa, O. and Quiros, C.F.  (1990Dissection of the Brassica-Nigra genome by monosomic addition lines.  Plant Breeding-Zeitschrift fur Pflanzenzuchtung.  1990. 105(3): 211 - 220   
  • Ochoa, O. and Quiros.C.F.  (1989Apium wild species-Novel sources for resistance to late blight in celery.  Plant Breeding-Zeitschrift fur Pflanzenzuchtung. 1989. 102(4): 317 - 321.  
  • --- Presentations ---

  • Caldwell, K., Wroblewski, T., Vinatzer, B., Williams, L., Piskurewicz, U., Cavanaugh, K., Jelenska, J., McHale, L., Kozik, A., Castillo, J., Ochoa, O., Greenberg, J., and Michelmore, R. (2007Genes Encoding Defense Signaling Proteins in Plants are More Conserved than Those Encoding Recognition Proteins. The 8-th International Conference on Arabidopsis Research. June 2007   
  • McHale, L., Truco, M.-J., Kozik, A., Wroblewski, T., Lavelle, D., Ochoa, O., Lahre, K., Mathrakott, S. and Michelmore, R. (2007Utilizing of Compositae Genome Project to Dissect the Genomic Architecture of Disease Resistance in Lettuce. XIII International Congress on Molecular Plant-Microbe Interact 2007   
  • Wroblewski, T., Caldwell, K., Vinatzer, B., Piskurewicz, U., Cavanaugh, K., Jelenska, J., McHale, L., Xu, H., Kozik, A., Ochoa, O., Williams, L., Greenberg, J. and Michelmore, R. (2007Large-Scale Analysis of Interactions between Several Crop Species and Effector Repertoires from Multiple Bacterial Pathogens.  XIII International Congress on Molecular Plant-Microbe Interacti 2007   
  • Wroblewski, T., Vinatzer, B., Caldwell, K.S., Piskurewicz, U., Cavanaugh, K.A., Jelenska, J., Teitzel, G., McHale, L.K., Xu, H., Kozik, A., Ochoa, O., Williams, L.A., Greenberg, J.T. and Michelmore, R.W. (2007Comparative Large-Scale Analysis of Resistance Gene Evolution.  Plant and Animal Genomes XV Conference, January 13-17, 2007; P76 2007   
  • Wroblewski, T., Piskurewicz, U., Tomczak, A., Ochoa, O. and Michelmore, R.W. (2007Multiple Resistance Specificities Are Lost As a Result of Silencing Within Members of NBS-LRR-Encoding Gene Family in Lettuce.  Plant and Animal Genomes XV Conference, January 13-17, 2007; P78 2007   
  • Wroblewski, T. , Vinatzer, B., Caldwell, K., Piskurewicz, U., Luo, Y., Cavanaugh, K., Jelenska, J., McHale, L., Kozik, A., Ochoa, O., Greenberg, J. and Michelmore, R. (2006Large-scale analysis of interactions between multiple Pseudomonas spp. and several crop species. XIII Plant and Animal Genome Conference, San Diego, CA. January 2006   
  • Wroblewski, T., Vinatzer, B., Caldwell, K., Piskurewicz, U., Cavanaugh, C., Jelenska, J., McHale, L., Kozik, A., Lee, M-W., Hotton, S., Fairfax, K., Teitzel, G., Castillo, J., Ochoa, O., Blumenthal, D., Greenberg, J. and Michelmore, R. (2005Large-scale analysis of recognition of effector proteins from multiple Pseudomonas spp. by several crop species.  MPMI Conference, December 2005, Merida, Mexico. 2005   
  • McHale L., Lavelle D.O., Pande B., Wroblewski T., Jose-Truco M., Suresh S., Kozik A., Ochoa O. and Michelmore R. (2004Identification and mapping of candidate genes involved in disease resistance in lettuce.  XII Plant and Animal Genome Conference, San Diego. 2004   
  • Truco M., Van Damme M., Lavelle D., Kozik A., Wroblewski T., Ochoa O., Van Wijk R., Kesseli R., Michelmore R. (2002Candidate Gene Approaches to Agriculturally Important Traits in Lettuce.  X Plant and Animal Genome Conference, San Diego. 2002   
  • Van Damme M., Lavelle D., Jose Truco M.,Ochoa O., Wroblewski T., Kars I., Van Wijk R., McHaleL., Michelmore R. (2002Characterization ofe Resistance Gene Candidates (RGCs in lettuce Lactuca sativa). X Plant and Animal Genome Conference, San Diego. 2002   
  • Wroblewski T., Shen K., Kars I., Orr N., Van Damme M., Patel V., Ochoa O. , Michelmore R. (2001Transgenic introgression of resistance specificities into lettuce (Lactuca sativa).  Molecular Plant-Microbe Congress, Wisconsin-Medison: 226 2001   
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