Dr. Joel S. Shore
Dept. Biology, York University, Toronto, Ontario, Canada M3J 1P3
Tel: (416) 736-2100 ext 33492, Fax: 736-5989, Email: email@example.com
Research in my lab currently focuses on the evolution of plant breeding systems although we have carried out studies of plant population genetics and plant/butterfly interactions. We have continued to study the genetics and evolution of breeding systems in a largely Neotropical plant family, the Turneraceae, and especially in the genus Turnera. A majority of species in the genus are distylous and strongly self-incompatible, while other species are self-compatible often having anthers and stigmas in close proximity, leading to high rates of self-fertilization. We have been working towards a molecular genetic dissection of the distyly locus in Turnera species using both a proteomics based approach as well as genetic mapping. We have now cloned, sequenced and identified two genes that appear to be tightly associated with the short-styled morph, although their expression is morph-limited, not the result of linkage to a gene complex determining distyly. Both proteins occur only in the styles of short-styled plants (in the transmitting tissue). We are constructing a fine scale genetic map using a range of molecular markers, in order to positionally clone genes at the distyly locus by probing a BAC library.
Barrett, S.C.H., S.D. Price and J.S. Shore. 1983. Male fertility and anisoplethic population structure in tristylous Pontederia cordata (Pontederiaceae). Evolution 37:745-759.
Shore, J.S. and S.C.H. Barrett. 1984. The effect of pollination intensity and incompatible pollen on seed set in Turnera ulmifolia (Turneraceae). Canadian Journal of Botany 62:1298-1303. pdf
Barrett, S.C.H. and J.S. Shore. 1985. Dimorphic incompatibility in Turnera hermannioides Camb. (Turneraceae). Annals of the Missouri Botanical Garden 72:259-263.
Shore, J.S. and S.C.H. Barrett. 1985. Morphological differentiation and crossability in the Turnera ulmifolia complex (Turneraceae). Systematic Botany 10:308-321.
Shore, J.S. and S.C.H. Barrett. 1985. Genetics of distyly and homostyly in the Turnera ulmifolia complex (Turneraceae). Heredity 55:167-174.
Shore, J.S. and S.C.H. Barrett. 1986. Genetic modifications of dimorphic incompatibility in the Turnera ulmifolia L. complex (Turneraceae). Canadian Journal of Genetics and Cytology 28: 796-807. pdf
Barrett, S.C.H., A.H.D. Brown and J.S. Shore. 1987. Mating patterns in tristylous Eichhornia paniculata (Pontederiaceae). Heredity 58:49-55.
Shore, J.S. and S.C.H. Barrett. 1987. Inheritance of floral and isozyme polymorphisms in Turnera ulmifolia L. Journal of Heredity 78:44-48.
Barrett, S.C.H. and J.S. Shore. 1987. Variation and evolution of breeding systems in the Turnera ulmifolia L. complex (Turneraceae). Evolution 41:340-354.
Shore, J.S. and S.C.H. Barrett. 1990. Quantitative genetics of floral characters in homostylous Turnera ulmifolia var. angustifolia. Heredity 64:105-112.
Shore, J.S. 1991. Tetrasomic inheritance and isozyme variation in Turnera ulmifolia vars. elegans Urb. and intermedia Urb. (Turneraceae). Heredity 66: 305-312.
Galen, C., J.S. Shore and H. Deyoe. 1991. Ecotypic divergence in alpine Polemonium viscosum: Genetic structure, quantitative variation, and local adaptation. Evolution 45: 1218-1228.
Shore, J.S. 1991. Chromosomal evidence for autotetraploidy in Turnera ulmifolia. Canadian Journal of Botany 69:1302-1308. pdf
Shore, J.S. and C.M. OBrist. 1992. Variation in cyanogenesis within and among populations and species of Turnera series Canaligerae Urban (Turneraceae). Biochem. Syst. Ecol. 20:9-15.
Rodriguez, L., M. Sokolowski and J.S. Shore. 1992. Habitat selection in Drosophila melanogaster larvae. Journal of Evolutionary Biology 5:61-70.
Learn, G.H., J.S. Shore, G.R. Furnier, G. Zurwaski and M.T. Clegg. 1992. Constraints on the evolution of chloroplast introns: The group II intron in the gene encoding tRNA-Val (UAC). Molecular Biology and Evolution 9:856-871.
Wolfe, L.M. and J.S. Shore. 1992. The mating system of Hydrophyllum appendiculatum, a protandrous species. Sexual Plant Reproduction 5:239-245.
Shore, J.S. 1993. Pollination genetics of the common milkweed, Asclepias syriaca L. Heredity 70:101-108.
Gibson, D., D.R. Bazely and J.S. Shore. 1993. Responses of brambles, Rubus vestitus, to herbivory. Oecologia 95:454-457.
Shore, J.S., K. McQueen and S.H. Little. 1994. The inheritance of plastid DNA in Turnera ulmifolia. Amer. J. Botany 81:1636-1639. pdf
Baker, A.M. and J.S. Shore. 1995. Pollen competition in Turnera ulmifolia. Amer. J. Botany 82:717-725. pdf
Belaoussoff, S. and J.S. Shore. 1995. Floral correlates and fitness consequences of mating system variation in Turnera ulmifolia. Evolution 49:545-556.
Schappert, P.J. and J.S. Shore. 1995. Cyanogenesis in Turnera ulmifolia L. (Turneraceae). I. Phenotypic distribution and genetic variation for cyanogenesis on Jamaica. Heredity 74: 392-404.
Gold, J.J. and J.S. Shore. 1995. Multiple paternity in Asclepias syriaca using a paired fruit analysis. Canadian Journal of Botany 73:1212-1216. pdf
Galen, C., M.L. Stanton, J.S. Shore and R.A. Sherry. 1997. Source-sink dynamics along environmental gradients: Environmental effects on gene flow and genetic substructure in a population of the Alpine Buttercup, Ranunculus adoneus. Opera Botanica 132:179-188.
Stanton, M.L., C. Galen and J.S. Shore. 1997. Population structure along a steep ecological gradient: consequences of flowering time and habitat variation in the snow buttercup, Ranunculus adoneus. Evolution 51:79-94.
Athanasiou, A. and J.S. Shore. 1997. Morph-specific proteins in pollen and styles of distylous Turnera (Turneraceae). Genetics 146:669-679.
Schappert, P.J. and J.S. Shore. 1998. Euptoieta hegesia Cramer (Nymphalidae) on Jamaica: Ecology, population biology and mortality. Journal of the Lepidopterists' Society 52:9-39.
Schappert, P.J. and J.S. Shore. 1999. Effects of cyanogenesis polymorphism in Turnera ulmifolia on Euptoieta hegesia, a specialist herbivore. Journal of Chemical Ecology 25:1455-1479.
Schappert, P.J. and J.S. Shore. 1999. Cyanogenesis, herbivory and plant defense in Turnera ulmifolia on Jamaica. Ecoscience 6: 511-520.
Schappert, P.J.and J.S. Shore. 2000. Cyanogenesis in Turnera ulmifolia L. (Turneraceae). II. Developmental expression, heritability and cost of cyanogenesis. Evolutionary Ecology Research 2: 337-352. pdf
Tamari, F., A. Athanasiou and J.S. Shore. 2001. Pollen tube growth and inhibition in distylous and homostylous Turnera and Piriqueta (Turneraceae). Canadian Journal of Botany. 79: 578-591. pdf
Athanasiou, A., D. Khosravi, F. Tamari, and J.S. Shore. 2003. Characterization and localization of short-specific polygalacturonase in distylous Turnera subulata (Turneraceae). American Journal of Botany 90: 675-682. pdf
Pither, R., J.S. Shore and M. Kellman. 2003. The genetic diversity of the tropical tree species, Terminalia amazonia (Combretaceae) in naturally fragmented populations. Heredity 91: 307-313.
Khosravi, D., R. Joulaie, and J. S. Shore. 2003. Immunocytochemical distribution of polygalacturonase and pectins in styles and pollen of distylous and homostylous Turneraceae. Sexual Plant Reproduction 16: 179-190.
Tamari, F. and J.S. Shore. 2004. Distribution of style and pollen polygalacturonases among distylous and homostylous Turnera and Piriqueta spp. (Turneraceae). Heredity 92: 380-385.
Khosravi, D, C.-C. Yang, K. W. M. Siu, and Joel S. Shore 2004. High Level of a-Dioxygenase in short styles of distylous Turnera spp. International Journal of Plant Sciences 165: 995-1006. pdf
Tamari, F., D. Khosravi, A.J. Hilliker, and J.S. Shore 2005. Inheritance of spontaneous mutant homostyles in Turnera subulata x krapovickasii and in autotetraploid T. scabra (Turneraceae). Heredity 94: 207-216.
Truyens, S., M.M. Arbo, and J.S. Shore. 2005. Phylogenetic relationships, chromosome andbreeding system evolution in Turnera (Turneraceae): inferences from ITS sequence data. American Journal of Botany 92: 1749-1758. pdf
Tamari, F. and J.S. Shore. 2006. Allelic variation for a short-specific polygalacturonase in Turnera subulata: Is it associated with the degree of self-compatibility? International Journal of Plant Sciences 167: 125-133. pdf
Shore, J.S., M. M. Arbo, and A. Fernandez. 2006. Breeding system variation, genetics and evolution in the Turneraceae. New Phytologist 171: 539-551.
Moens, P.B., E. Marcon, J.S. Shore N. Kochakpour, B. Spyropoulos. 2007. Initiation and resolution of interhomolog connections: crossover and non-crossover sites along mouse synaptonemal complexes. Journal of Cell Science 120: 1017-1027. pdf
Labonne, J.D.J., A.J. Hilliker, and J.S. Shore. 2007. Meiotic recombination in Turnera (Turneraceae): Extreme sexual difference in rates, but no evidence for recombination suppression associated with the distyly (S) locus. Heredity 98:411-418.
Labonne, J.D.J., A. Vaisman, and J.S. Shore. 2008. Construction of a first genetic map of distylous Turnera and a fine-scale map of the S-locus region. Genome 51: 471- 478. pdf
Labonne, J.D.J., A. Goultiaeva, and J.S. Shore. 2009. High-resolution mapping of the S-locus in Turnera leads to the discovery of three genes tightly associated with the S-alleles. Molecular Genetics and Genomics: 281: 673-685.
Safavian, D. and J.S. Shore. 2010. Ultrastructure of styles and pollen tubes of distylous Turnera joelii and T. scabra (Turneraceae): Are there different mechanisms of incompatibility? Sexual Plant Reproduction. 23: 225-237.
Labonne, J.D.J., F. Tamari, and J.S. Shore. 2010. Characterization of X-ray-generated floral mutants carrying deletions at the S-locus of distylous Turnera subulata. Heredity 105:235-243 and see News and Commentary
Labonne, J.D.J., and J.S. Shore. 2011. Positional cloning of the s haplotype determining the floral and incompatibility phenotype of the long-styled morph of distylous Turnera subulata. Molecular Genetics and Genomics 285: 101-111
Thulin, M., S.G. Razafimandimbison, P. Chafe, N. Heidari, A. Kool and J.S. Shore. 2012. Phylogeny of the Turneraceae clade (Passifloraceae s.l.): Trans-Atlantic disjunctions and two new genera in Africa. Taxon. 61: 308-323.
Lopez, A., A. Fernandez, and J.S. Shore. 2013, Inferences on the origins of polyploid Turnera species (Passifloraceae) based on molecular data. Botany. 91: 167-175.
Chafe, D.J., T. Lee, and J.S. Shore. 2014.Development of a genetic transformation system for distylous Turnera joelii (Passifloraceae) and characterization of a self-compatible mutant. Plant Cell, Tissue and Organ Culture (PCTOC). 10.1007/s11240-014-0617-y
Dutton, E.M., E.Y. Luo, A.R. Cembrowski, J.S. Shore, M.E. Frederickson. 2016. Three’s a crowd: Trade-offs between attracting pollinators and ant bodyguards with nectar rewards in Turnera. American Naturalist 188: 38-51.
Dutton, E.M., J.S. Shore, M.E. Frederickson. 2016 Extrafloral nectar increases seed removal by ants in Turnera ulmifolia. Biotropica 48: 429-432
Shore, J.S., H.J. Hamam, P.D.J. Chafe, J.D.J. Labonne, P.M. Henning, A.G. McCubbin. 2019. The long and short of the S-locus in Turnera (Passifloraceae). New Phytologist. https://doi.org/10.1111/nph.15970. F1000 recommended
Barrett. S.C.H. and J.S. Shore. 1989. Isozyme variation in colonizing plants, pages 106-126. In:Isozymes in Plant Biology. Soltis, D.E. and Soltis, P.S. (eds.). Dioscorides Press, Portland.
Khosravi, D., K.W.M. Siu, and J.S. Shore. 2006. A proteomics approach to the study of distyly in Turnera species. In: Jaime A. Teixeira da Silva (ed.), Floriculture, Ornamental and Plant Biotechnology: Advances and Topical Issues, Volume 1, pp. 51-60. Global Science Books, UK. pdf
Barrett. S.C.H. and J.S. Shore. 2008. New insights on heterostyly: Comparative biology, ecology and genetics, pages 3-32. In Franklin-Tong V (ed) "Self-Incompatibility in Flowering plants: Evolution, Diversity and Mechanisms". Springer-Verlag, Berlin. online
Dr. Phil J. Schappert
Dr. Andreas Athanasiou
Dr. Davood Khosravi.
Dr. Farshad Tamari, Department of Biological Sciences, Kean University, New Jersey. U.S.A.
Dr. Jonathan Labonne
Deanna Harris (MSc)