Faculty Profile

Roger T. Chetelat
Director, C.M. Rick Tomato Genetics Resource Center
Plant Sciences
104 Asmundson Hall
Office (530) 752-6726
Lab (530) 754-8647
trchetelat@ucdavis.edu
http://tgrc.ucdavis.edu
[Picture of Roger T. Chetelat]
Molecular and classical genetics of tomato; wide hybridization and interspecific incompatibility; use of molecular markers in breeding; germplasm conservation.

Degrees:
1994 - PhD - University of California, Davis - Genetics
1983 - MS - University of California, Davis - Plant Physiology
1979 - BS - Santa Clara University - Biology

Department and Center Affiliations:
Department of Plant Sciences

Professional Societies:
American Association for the Advancement of Science

Grad Group Affiliations and Specialties:
Genetics
Non-DBS Grad Group(s) - Horticulture and Agronomy

Publications:
Chetelat, R.T., R.A. Pertuzé, L. Faundez, E.B. Graham, and C.M. Jones (2009) Distribution, ecology and reproductive biology of wild tomatoes and related nightshades from the Atacama Desert region of northern Chile. Euphytica 167: 77-93.

Davis, J., D. Yu, W. Evans, T. Gokirmak, R. T. Chetelat, and H. U. Stotz (2009) Mapping of loci from Solanum lycopersicoides conferring resistance or susceptibility to Botrytis cinerea in tomato. Theor. Appl. Genet. 119: 305-314.

Albrecht, E., and R.T. Chetelat (2009) Comparative genetic linkage map of Solanum sect. Juglandifolia : evidence of chromosomal rearrangements and overall synteny with the tomatoes and related nightshades. Theor. Appl. Genet. 118: 831-847.

Ji, Y., and R.T. Chetelat (2007) GISH analysis of meiotic chromosome pairing in Solanum lycopersicoides introgression lines of cultivated tomato. Genome 50: 825-833.

Jones, C.M., C.M. Rick, D. Adams, J. Jernstedt, and R.T. Chetelat (2007) Genealogy and fine mapping of obscuravenosa, a gene affecting the distribution of chloroplasts in leaf veins, and evidence of selection during breeding of tomatoes (Lycopersicon esculentum; Solanaceae). Amer. J. Bot. 94: 935-947.

Canady, M.A., Y. Ji, and R.T. Chetelat (2006) Homeologous recombination in Solanum lycopersicodes introgression lines of cultivated tomato. Genetics 174: 1775-1778.

Rousseaux, C.M., C. M. Jones, D. Adams, R. Chetelat, A. Bennett and A. Powell (2005) QTL analysis of fruit antioxidants in tomato using Lycopersicon pennellii introgression lines. Theor. Appl. Genet. 111: 1396-1408

Canady, M.A., V. Meglic, R.T. Chetelat (2005) A library of Solanum lycopersicoides introgression lines in cultivated tomato. Genome 48: 685-697.

Ji, Y., R.A. Pertuze, R.T. Chetelat (2004) Genome differentiation by GISH in interspecific and intergeneric hybrids of tomato and related nightshades. Chrom. Res. 12: 107-116.

Guimaraes, R.L., R.T. Chetelat, and H.U. Stotz (2004) Resistance to B. cinerea in S. lycopersicoides is dominant in hybrids with tomato, and involves induced hyphal death. Eur. J. Pl. Path. 110: 13-23

Pertuze, R. A., Y. Ji, and R.T. Chetelat (2003) Transmission and recombination of homeologous S. sitiens chromosomes in tomato. Theor. Appl. Genet. 107: 1391-1401.

Ji, Y., and R.T. Chetelat (2003) Homoeologous pairing and recombination in Solanum lycopersicoides monosomic addition and substitution lines of tomato. Theor. Appl. Genet. 106: 979-989.

Research Interests:
My lab studies plant genetics, breeding, and crop diversity, using tomato and its wild relatives as an experimental system. Various breeding and cytogenetic strategies are employed to transfer into cultivated tomato the genomes of related nightshade species. Their genome organization is studied by comparative genetic mapping, and natural diversity and genetic relationships by SSRs and GIS methods. The genes underlying interspecific reproductive barriers (unilateral incompatibility) are being identified by map-based cloning. The role of the DNA mismatch repair system in restricting recombination between diverged species are being studied in transgenic tomatoes. These research projects are integrated with the C.M. Rick Tomato Genetics Resource Center, a genebank of tomato mutants, wild relatives and other genetic stocks.

Laboratory Personnel:
151 Asmundson Hall - Wentao Li, Xiuwen Huo, Amanda Mathews, Prasanna H. Chandrappa

C.M. Rick Tomato Genetics Resource Center/ Annex 9, Asmundson Hall - Peter March, Tom Starbuck, Amanda Hall
http://tgrc.ucdavis.edu

Field Sites:
Vegetable Crops Fieldhouse / greenhouse facilities

Teaching Interests:


GGG291 History of Genetics Co-instructor for ENH150 Plant Conservation Genetics Guest lectures in PLB154, AMRR110C, VCR220.
http://www.plantsciences.ucdavis.edu/ggg291/

Courses Taught:
GGG 291 History of Genetics - Term(s): Fall