Jayasankar (Jay) Subramanian

Jay Subramanian



905-562-4141 x134


M.Sc. (Hort.) TamilNadu Agricultural University, Coimbatore, India;
Ph.D. University of Florida




123 VINE

This program mainly aims at developing new varieties of peach, plum, nectarine and cherries to meet the Ontario fruit industry needs. Apart from continuing traditional breeding that is in place for a long time at Vineland Station, my program also will incorporate recent advances in cell culture and molecular genetics to complement fruit breeding. One of the near term objective is to find ways to control the spread of plum pox virus by utilizing the genetic resources that are available here as well as in other tree fruit breeding programs in the US and Europe.


BOT*2000 DE Plants, Biology and People
PBIO*3750 Plant Tissue Culture
PLNT*6250 Colloquium in Plant Genetics and Breeding

Relevant Links:

Selected Publications:

El-Sharkawy, I., S. Sherif, M. Abdulla and S. Jayasankar. (2017). Plum Fruit Development Occurs via Gibberellin Sensitive and Insensitive DELLA repressors. PLOS ONE. DOI: 10.1371/journal.pone.0169440.

Jincy, M., M. Djanaguiraman, P. Jeyakumar, K.S. Subramanian, S. Jayasankar and G. Paliyath. (2017). Inhibition of phospholipase D enzyme activity through hexanal leads to delayed mango (Mangifera indica L.) fruit ripening through changes in oxidants and antioxidant enzymes activity. Scientia Horticulturae. 218: 316–325. DOI: 10.1016/j.scienta.2017.02.026.

Selvaraj, D., S. Sherif, M.S. Pak Dek and J. Subramanian. (2016). Identification and characterization of genes involved in the fruit color development of European plum. Journal of the American Society for Horticultural Science. 141: 467-474. DOI: 10.21273/JASHS03617-16

Anusha, B., K. Sathya, S. Parthasarathy, P. Kuppusamy, D. Raghu, G. Thiribhuvanamala, R. Ramjegathesh, K.S. Subramanian, G. Paliyath and S. Jayasankar.* (2016). Effect of hexanal on mycelial growth and spore germination of Colletotrichum gloeosporioides and Lasiodiplodia theobromae of mango. Tropical Agriculture. 93: 312-322.

El-Sharkawy, I., S. Sherif, W. El Kayal, B. Jones, Z. Li, J.A. Sullivan and S. Jayasankar. (2016). Overexpression of plum auxin receptor PslTIR1 in tomato alters plant growth, fruit development and fruit shelf-life characteristics. BMC Plant Biology.

El Sharkawy, I., S. Sherif, T. Qubbaj, A. Sullivan and J. Subramanian. (2016). Stimulated auxin levels enhance plum fruit ripening, but limit shelf-life characteristics. Postharvest Biology and Technology. 112: 215-223. DOI: 10.1016/j.postharvbio.2015.09.012.

Sherif, S., I. El-Sharkawy, J. Mathur, P. Ravindran, J. Subramanian, P. Kumar and G. Paliyath. (2015). A stable JAZ protein from peach mediates the transition from outcrossing to self-pollination. BMC Biology. 13: 11. DOI: 10.1186/s12915-015-0124-6.

Prasath, D., A. Balagopal, V. Mahantesh, R. Babu, J. Subramanian and M. Anandaraj. (2015). Comparative study of pathogenesis-related protein-5 of different Zingiberaceae species. Indian Journal of Biotechnology.

Correa-Betanzo, J., P. Padmanabhan, M. Corredig and J. Subramanian. (2015). Complex Formation of Blueberry (Vaccinium angustifolium) Anthocyanins during Freeze-Drying and Its Influence on Their Biological Activity. Journal of Agricultural and Food Chemistry. 63: 2935-2946. DOI: 10.1021/acs.jafc.5b00016.

Sekar, C., K.S. Subramanian, J. Subramanian and M. Vijayaprakash. (2014). Gender dynamics in mango production system in India. Innovare Journal of Social Sciences. 2: 74-80.

Sherif, S., I. El-Sharkawy, G. Paliyath and J. Subramanian. (2014). Molecular Insights into Plant-Phytopathogenic Bacteria Interactions. Plant Molecular Biology Reporter. DOI: 10.1007/s11105-014-0822-1.

Jayanthi, M., A. Jerard, S. Sherif and J. Subramanian. (2014). Molecular characterization of somatic embryogenesis receptor-like kinase (SERK) genes from plum (Prunus salicina) and peach (Prunus persica). Indian Journal of Horticulture. 71: 560-563.

El-Sharkawy, I., S. Sherif, B. Jones, I. Mila, P. Kumar, M. Bouzayen and S. Jayasankar. (2014). TIR1-like auxin-receptors are involved in the regulation of plum fruit development. Journal of Experimental Botany. 65: 5205-5215. DOI: 10.1093/jxb/eru279.

Cheema, A., P. Padmanabhan, S. Jayasankar, T. Blom and G. Paliyath. (2014). Improving quality of greenhouse tomato (Solanum lycopersicum L.) by pre- and postharvest applications of hexanal-containing formulations. Postharvest Biology and Technology. 95: 13–19.

El-Sharkawy, I., S. Sherif, W. El Kayal, A. Mahboob, K. Abubaker, P. Ravindran, A.P. Jyoti Prakash, P.P. Kumar and S. Jayasankar. (2014). Characterization of gibberellin-signalling elements during plum fruit ontogeny defines the essentiality of gibberellin in fruit development. Plant Molecular Biology. 84: 399-413. DOI: 10.1007/s11103-013-0139-8.

El-Kereamy, A. and S. Jayasankar. (2013). Cloning and differential expression of a plum single repeat-MYB, PdMYB3, in compatible and incompatible interactions during fungal infection. Canadian Journal of Plant Science. 93 (4): 599-605.

S. Sherif, I. El-Sharkawy, G. Paliyath, S. Jayasankar. (2013). PpERF3b, a transcriptional repressor from peach, contributes to disease susceptibility and side branching in EAR-dependent and-independent fashions. Plant Cell Reports. 32: 1111-1124.

El-Sharkawy, I., W. El Kayal, D. Prasath, H. Fernández, M. Bouzayen, A.M. Svircev and S. Jayasankar. (2012). Identification and genetic characterization of a gibberellin 2-oxidase gene that controls tree stature and reproductive growth in plum. Journal of Experimental Botany. 63 (3): 1225-1239.

Sherif, S., G. Paliyath and S. Jayasankar. (2012). Molecular characterization of peach PR genes and their induction kinetics in response to bacterial infection and signaling molecules. Plant Cell Reports. 31 (4): 697-711. DOI: 10.1007/s00299-011-1188-6.

Sherif, S., I. El-Sharkawy, G. Paliyath and S. Jayasankar. (2012). Differential expression of peach ERF transcriptional activators in response to signaling molecules and inoculation with Xanthomonas campestris pv. pruni. Journal of Plant Physiology. 169 (7): 731-739.

El-Sharkawy, I., S. Sherif, A. Mahboob, K. Abubaker, M. Bouzayen and S. Jayasankar. (2012). Expression of auxin-binding protein1 during plum fruit ontogeny supports the potential role of auxin in initiating and enhancing climacteric ripening. Plant Cell Reports. 31 (10): 1911-1921.

Taheri, A., J.A. Cline, S. Jayasankar and P.K. Pauls. (2012). Ethephon-Induced Abscission of “Redhaven” Peach. American Journal of Plant Sciences. 3 (2): 295-301.

Taheri, A., S. Jayasankar, J.A. Cline, M.N. Raizada and P.K. Pauls. (2012). A WD-repeat gene from peach (Prunus persica L.) is a functional ortholog of Arabidopsis thaliana TRANSPARENT TESTA GLABRA1. In Vitro Cellular & Developmental Biology. 48 (1): 23-29.

El-Kereamy, A., I. El-Sharkawy, R. Ramamoorthy, A. Taheri, D. Errampalli, P. Kumar and S. Jayasankar. Prunus domestica pathogenesis-related protein-5 activates the defense response pathway and enhances the resistance to fungal infection. PloS One. 6 (3): e17973.

Jayasankar, S. and F. Kappel. (2011). Recent advances in cherry breeding (Invited Mini-Review). Global Science Books - Fruit, Vegetable and Cereal Science and Biotechnology. 5 (1): 63-67.

Meerja, F.A., Y. Song, S. Sibbald, S. Jayasankar and L. Tian. (2011). European Plum in Vitro Regeneration from different organs. Global Science Books - Tree and Forestry Science and Biotechnology. 5 (1): 61-64

Wu, H., J. Shi, S. Xue, Y. Kakuda, D. Wang, Y. Jiang, X. Ye, Y. Li, S. Jayasankar. (2011). Essential oil extracted from peach Prunus persica kernel and its physicochemical and antioxidant properties. LWT-Food Science and Technology. 44 (10): 2032-2039.

Prasath, D., I. El-Sharkawy, S. Sherif, K.S. Tiwary and S. Jayasankar. (2011). Cloning and characterization of PR5 gene from Curcuma amada and Zingiber officinale in response to Ralstonia solanacearum infection. Plant Cell Reports. 30 (10): 1799-1809.

Sharma, M., J.K. Jacob, S. Jayasankar and G. Paliyath. (2010). Hexanal and 1-MCP treatments for enhancing the shelf life and quality of sweet cherry Prunus avium L. Scientia Horticulturae. 125 (3): 239-247.

El-Sharkawy, I., I. Mila, M. Bouzayen and S. Jayasankar. (2010). Regulation of two germin-like protein genes during plum fruit development. Journal of Experimental Botany. 61 (6): 1761-1770.

El-Sharkawy, I., S. Sherif, I. Mila, M. Bouzayen and S. Jayasankar. (2009). Molecular characterization of seven genes encoding ethylene-responsive transcriptional factors during plum fruit development and ripening. Journal of Experimental Botany. 60 (3): 907-922.

Jayasankar, S., A. Taheri, D. Errampalli and G. Paliyath. (2009). Expression analysis of a plum pathogenesis related 10 (PR10) protein during brown rot infection A El-kereamy. Plant Cell Reports. 28 (1): 95-102.

El-Sharkawy, I., W.S. Kim, S. Jayasankar, A.M. Svircev and D.C.W. Brown. (2008). Differential regulation of four members of the ACC synthase gene family in plum. Journal of Experimental Botany. 59 (8): 2009-2027.

Paliyath, G., and S. Jayasankar. (2008). Phospholipase D inhibition technology for enhancing shelf life and quality. Postharvest Biology and Technology of Fruits, Vegetable, and Flowers. 443.

Sharma, M., C. Sitbon, S. Jayasankar and G. Paliyath. (2008). Changes in nutritional quality of fruits and vegetables during storage. Postharvest Biology and Technology of Fruits, Vegetables, and Flowers. 443.

El-Sharkawy, I., W.S. Kim, A. El-Kereamy, S. Jayasankar, A.M. Svircev and D.C.W. Brown. (2008). Isolation and characterization of four ethylene signal transduction elements in plums (Prunus salicina L.). Journal of Experimental Botany. 58 (13): 3631-3643.

Tian, L., S. Sibbald, S. Jayasankar and A. Svircev. (2007). Characterization of Prunus domestica L. in vitro regeneration via hypocotyls. Scientia Horticulturae. 112 (4): 462-466.

Tian, L., Y. Wen, S. Jayasankar and S. Sibbald. (2007). Regeneration of Prunus salicina Lindl (Japanese plum) from hypocotyls of mature seeds. In Vitro Cellular & Developmental Biology. 43 (4): 343-347.

Rupasinghe, H.P., S. Jayasankar and W. Lay. (2006). Variation in total phenolics and antioxidant capacity among European plum genotypes. Scientia Horticulturae. 108 (3): 243-246.

Jayasankar, S., M. Van Aman, J. Cordts, S. Dhekney, Z.T. Li and D.J. Gray. (2005). Low temperature storage of suspension culture-derived grapevine somatic embryos and regeneration of plants. In Vitro Cellular & Developmental Biology. 41 (6): 752-756.

Gray, D.J., S. Jayasankar and Z.T. Li. (2005). A Simple Illumination System for Visualizing Green Fluorescent Protein. Plant Development and Biotechnology. 273-276.

Li, Z.T., S. Jayasankar and D.J. Gray. (2004). Bi-directional duplex promoters with duplicated enhancers significantly increase transgene expression in grape and tobacco. Transgenic Research. 13 (2): 143-154.

Jayasankar, S., B.R. Bondada, Z. Li and D.J. Gray. (2003). Comparative anatomy and morphology of Vitis vinifera (Vitaceae) somatic embryos from solid-and liquid-culture-derived proembryogenic masses. American Journal of Botany. 90 (7): 973-979.

Jayasankar, S., Z. Li and D.J. Gray. (2003). Constitutive expression of Vitis vinifera thaumatin-like protein after in vitro selection and its role in anthracnose resistance. Functional Plant Biology. 30 (11): 1105-1115.

Jayasankar, S. and D.J. Gray. (2003). In vitro selection for disease resistance in plants-an alternative to genetic engineering. AgBiotechNet. 5: 1-5.

Jayasankar, S., B. Bondada, Z. Li and D. Gray. (2002). A unique morphotype of grapevine somatic embryos exhibits accelerated germination and early plant development. Plant Cell Reports. 20 (10): 907-911.

Li, Z., S. Jayasankar and D.J. Gray. (2001). Expression of a bifunctional green fluorescent protein (GFP) fusion marker under the control of three constitutive promoters and enhanced derivatives in transgenic grape (Vitis vinifera). Plant Science. 160 (5): 877-887.

Li, Z., S. Jayasankar and D.J. Gray. (2001). An improved enzyme-linked immunoabsorbent assay protocol for the detection of small lytic peptides in transgenic grapevines (Vitis vinifera). Plant Molecular Biology Reporter. 19 (4): 341-351.

Jayasankar, S., M. Van Aman, Z. Li and D.J. Gray. (2001). Direct seeding of grapevine somatic embryos and regeneration of plants. In Vitro Cellular & Developmental Biology. 37 (4): 476-479.

Jayasankar, S., Z. Li and D.J. Gray. (2000). In-vitro selection of Vitis vinifera ‘Chardonnay' with Elsinoe ampelina culture filtrate is accompanied by fungal resistance and enhanced secretion of chitinase. Planta. 211 (2): 200-208.

Jayasankar, S., D.J. Gray and R.E. Litz. (1999). High-efficiency somatic embryogenesis and plant regeneration from suspension cultures of grapevine. Plant Cell Reports. 18 (7): 533-537.

Jayasankar, S., R.E. Litz, D.J. Gray and P.A. Moon. (1999). Responses of embryogenic mango cultures and seedling bioassays to a partially purified phytotoxin produced by a mango leaf isolate of Colletotrichum gloeosporioides penz. In Vitro Cellular & Developmental Biology. 35 (6): 475-479.

Li, Z., S. Jayasankar, N.J. Barnett and D.J. Gray. (1999). Characterization of Agrobacterium-mediated transformation of grapevine (Vitis spp.) using the green fluorescent protein (GFP) gene. In Vitro Cellular & Development Biology. 35.

Jayasankar, S., and R.E. Litz. (1998). Characterization of embryogenic mango cultures selected for resistance to Colletotrichum gloeosporioides culture filtrate and phytotoxin. Theoretical and Applied Genetics. 96 (6): 823-831.

Jayasankar, S., R.E. Litz, R.J. Schnell and A.C. Hernandez. (1998). Embryogenic mango cultures selected for resistance toColletotrichum gloeosporioides culture filtrate show variation in random amplified polymorphic DNA (RAPD) markers. In Vitro Cellular & Developmental Biology. 34 (2): 112-116.

Jayasankar, S., F. Pliego-Alfaro, P.A. Moon and R.E. Litz. (1997). Temporal effect of 2, 4-D on induction of embryogenic nuclellar cultures and somatic embryo development of ‘Carabao’ mango BL Lad. In Vitro Cellular & Developmental Biology. 33 (4): 253-257.

Jayasankar, S., R.E. Litz and R.J. Schnell. (1996). Selection and Characterization of Resistance in Mango Embryogenic Cultures to Colletotrichum gloeosporioides Penz. Phytotoxin. HortScience. 31 (4): 695-695.

Irulappan, I., R. Arumugam, S. Jayasankar and S. Sivagamasundhari. (1992). Combining ability in okra (Abelmoschus esculentus L. Moench). South Indian Horticulture. 40: 21-27.

Irulappan, I., R. Arumugam, S. Jayasankar and S Sivagamasundhari. (1992). Heterosis in bhendi. South Indian Horticulture. 40: 79-82.

Hegde, M., M. Kulasekaran, S. Jayasankar and K.G. Shamnungavelu. (1991). In vitro embryogenesis in cashew (Anacardium occidentale L.). Indian Cashew Journal. 21 (4): 17-25.

Hegde, M., M. Kulasekaran, K.G. Shanmughavelu and S. Jayasankar. (1990). In vitro culture of cashew seedlings and multiple plantlets from mature cotyledons. Indian Cashew Journal. 20 (2): 19-24.

Jayasankar, S., R.S.V. Rai, N. Natarajan and C. Surendran. (1990). Vegetative propagation in Gmelina arborea Roxb. through single node cuttings. Indian Journal of Forestry. 13: 162-164.

Jayasankar, S., N. Chezhiyan, M.A. Khader and K. Nanjan. (1990). Studies on the rooting of terminal cuttings of Ficus infectoria Roxb. South Indian Horticulture. 38 (3): 170-172.

Christy, A.E., K.G. Shanmughavelu, S. Jayasankar and C. Padmanabhan. (1990). Callus culture in cassava (Manihot esculenta Crantz.). South Indian Horticulture. 38 (5): 279-281.

Jayasankar, S., I. Irulappan and R. Arumugam. (1986). Range, mean performance and residual heterosis of F2 intervarietal crosses in chilli (Capsicum annuum). South Indian Horticulture. 34: 147-149.

Jayasankar, S. and I. Irulappan. (1986). Components of variance and degree of dominance for yield contributing traits in chilli (Capsicum annuum). South Indian Horticulture. 34: 74-81.