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Home > People > Sonia Philosoph-Hadas, Ph.D. 
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Sonia Philosoph-Hadas, Ph.D.  (Researcher)
Postharvest and Food Sciences, Postharvest Science of Fresh Produce
Research Interests / Job description  
Telephone Tel: 03-9683604 03-9683627
Cellphone Cell: 050-6220604
Email Email: vtsoniap@volcani.agri.gov.il
Associate Director for Academic Affairs
Research Interests / Job description
Postharvest physiology of ornamentals, including cut flowers, ornamental branches and flower bulbs; Gravitropism of flowering stalks – physiological, cellular and molecular aspects; Calcium-mediated signal transduction pathways; Ethylene biosynthesis pathway and action; Biochemical and physiological aspects of leaf and flower petal senescence; Application of plant growth regulators to solve postharvest problems of senescence, abscission, water-balance, chilling-injury, wilting and gravitropic bending in cut flowers and ornamental branches; Storage of ornamental bulbs and corms.

Selected publications 

  • Huang, F-Y., Philosoph-Hadas, S., Meir, S., Callaham, D.A., Sabato, R., Zelcer, A. and Hepler, P.K. (1997). Increases in cytosolic calcium in parsley mesophyll cells correlate with leaf senescence. Plant Physiol. 115: 51-60.
  • Borochov, A., Spiegelstein, H. and Philosoph-Hadas, S. (1997). Ethylene and flower petal senescence: interrelationship with membrane lipid catabolism. Physiol. Plant. 100: 606-612. (Invited review).
  • Cohen, V., Philosoph-Hadas, S. and Borochov, A. (1997). Inducing freezing tolerance in Narcissus bulbs by growth retardants. Acta Hortic. 430: 459-464.
  • Meir, S., Philosoph-Hadas, S., Droby, S., Reuveni, Y., Horev, B., Davidson, H. and Stav, D. (1997). Treatments for improving water balance of cut wax flowers exported to Japan under unfavorable transport conditions. Bulletin of Israeli Flower Growers 7: 56-61. (In Hebrew).
  • Droby, S., Meir, S., Philosoph-Hadas, S., Horev, B., Reuveni, Y. and Stav, D. (1997). Treatments for reducing decay and abscission in cut wax flowers exported under unfavorable transport conditions. Bulletin of Israeli Flower Growers 8: 60-62, 86. (In Hebrew).
  • Droby, S., Philosoph-Hadas, S., Horev, B., Rosenberger, I. and Luria, G. (1997).
    Potential use of biological control strategies against storage rots of flower corms and bulbs. Bulletin of Israeli Flower Growers, 6: 66,72. (In Hebrew).
  • Borochov, A., Kolotilin, I., Weiss, D. and Philosoph-Hadas, S. (1997). Effect of environmental conditions on growth and pigmentation of Gypsophila flowers cv. ‘Arbel'. Bulletin of Israeli Flower Growers 11: 70-72. (In Hebrew).
  • Luria, G., Gutman, S., Droby, S., Philosoph-Hadas, S. and Borochov, A. (1998). Hot water treatments in Aconitum tubers: effect on parameters of growth and flowering. Bulletin of Israeli Flower Growers 11: 68-71. (In Hebrew).
  • Meir, S., Reuveni, Y., Davidson, H. and Philosoph-Hadas, S. (1998). Commercial application of postharvest gibberellin treatments for improving quality of pelargonium cuttings during transport. Bulletin of Israeli Flower Growers 7: 67-68. (In Hebrew).
  • Meir, S., Reuveni, Y., Rosenberger, I., Manor, Y. and Philosoph-Hadas, S. (1998).
    Improving quality of limonium beltleard cut flowers by pulsing treatments with floral preservatives and sucrose. Bulletin of Israeli Flower Growers 10: 67-71,86. (In Hebrew).
  • Meir, S., Droby, S., Davidson, H., Alsevia, S., Cohen, L., Horev, B. and Philosoph-Hadas, S. (1998). Suppression of Botrytis blight in cut rose flowers induced by postharvest application of methyl jasmonate. Postharvest Biol. Technol. 13: 235-243.
  • Friedman, H., Meir, S., Rosenberger, I., Halevy, A.H., Kaufman, P.B. and Philosoph- Hadas, S. (1998). Inhibition of the gravitropic response of snapdragon spikes by the calcium channel blocker lanthanum chloride. Plant Physiol. 118: 483-392.
  • Droby, S., Porat, R., Cohen, L., Weiss, B., Shapiro, B., Philosoph-Hadas, S. and Meir, S. (1999). Suppression green mold decay in grapefruit with postharvest jasmonate application. J. Amer. Soc. Hort. Sci. 124(2): 184-188.
  • Michaeli, R., Philosoph-Hadas, S., Riov, J. and Meir, S. (1999). Chilling-induced leaf abscission of Ixora coccinea plants. I. Induction by oxidative stress via increased sensitivity to ethylene. Physiol. Plant. 107: 166-173.
  • Michaeli, R., Riov, J., Philosoph-Hadas, S. and Meir, S. (1999). Chilling-induced leaf abscission of Ixora coccinea plants. II. Alteration of auxin economy by oxidative stress. Physiol. Plant. 107: 174-180.
  • Michaeli, R, Philosoph-Hadas S, Riov, J. and Meir S. (1999). Role of ethylene sensitivity in mediating the chilling-induced leaf abscission of ixora plants. In: Biology and Biotechnology of the Plant Hormone Ethylene II (A.K. Kanellis, C. Chang, H. Klee, A.B. Bleecker, J.C. Pech and D. Grierson, eds.), pp. 19-26. Kluwer Academic Publishers, Dordrecht, The Netherlands.
  • Tamari, G., Salim, S., Philosoph-Hadas, S. and Meir, S. (1999). Prevention of floret abscission in Cestrum cut flowers. Bulletin of Israeli Flower Growers 5: 55-57. (In Hebrew).
  • Meir, S., Philosoph-Hadas, S., Salim, S., Davidson, H., Tamari, Y. and Gutman, S. (1999). Prevention of floret abscission in Cestrum cut flowers by pulsing treatments with synthetic chlorophenoxy auxins and STS. Bulletin of Israeli Flower Growers 4: 83-89 (In Hebrew).
  • Philosoph-Hadas, S., Friedman, H., Berkovitz-Simantov, R., Rosenberger, I., Woltering, E.J., Halevy, A.H. and Meir, S. (1999). Involvement of ethylene biosynthesis and action in regulation of the gravitropic response of cut flowers. In: Biology and Biothechnology of the Plant Hormone Ethylene II (A.K. Kanellis, C. Chang, H. Klee, A.B. Bleecker, J.C. Pech and D. Grierson, eds.), pp. 151-156. Kluwer Academic Publishers, Dordrecht, The Netherlands.
  • Meir, S., Philosoph-Hadas, S., Salim, S., Tamari, G., Kirshner-Engel, R., Carmeli, A., Sizel, J. and Lavee, A. (2000). Kangaroo paw: development of treatments for preserving the quality of cut flowers. Bulletin of Israeli Flower Growers 3: 49-52. (In Hebrew).
  • Tamari, G., Salim, S., Vardi, J., Philosoph-Hadas, S. and Meir, S. (2000). Roses: examination of the necessity of STS presence in the pulsing solution and the effect of preservatives and gibberellin on quality of summer cut flowers. Bulletin of Israeli Flower Growers 4: 46-47. (In Hebrew).
  • Sandler-Ziv, D., Haurel, Y., Cohen, A., Kornellio, P., Rosenberger, I., Davidson, H. and Philosoph-Hadas, S. (2000). Hippeastrum: effect of storage temperature regims of bulbs and their origin on flowering quality of bulbs from various cultivars. Bulletin of Israel Flower Growers 10: 77-80. (In Hebrew).
  • Michaeli, R., Riov, J., Philosoph-Hadas, S. and Meir, S. (2001). Chilling-induced leaf abscission of Ixora coccinea plants. III. Enhancement by high light via increased oxidative processes. Physiol. Plant. 113: 338-345.
  • Philosoph-Hadas, S., Friedman, H., Meir, S., Berkovitz-Simantov, R., Rosenberger, I., Halevy, A.H., Kaufman, P.B., Balk, P. and Woltering E.J. (2001). Gravitropism in cut flower stalks of snapdragon. Advances in Space Research 27(5): 921-932.
  • Halevy, A.H., Torre, S., Borochov, A., Porat, R., Philosoph-Hadas, S., Meir, S. and Friedman H. (2001). Calcium in regulation of postharvest life of flowers. Acta Hortic. 543: 345-351.
  • Oren-Shamir, M., Dela, G., Ovadia, R., Nissim-Levi, A., Philosoph-Hadas, S., and Meir, S. (2001). Differentiation between petal blueing and senescence of cut ‘Mercedes' rose flowers. J. Hortic. Sci. Biothechnol 76(2): 195-200.
  • Rosenberger, I., Philosoph-Hadas, S., Meir, S., Zuberi, G., Amar, E and Caspi, P. (2001). Limonium: effect of growing conditions in the Arava and postharvest treatments on flower quality of various cultivars. Bulletin of Israeli Flower Growers 9: 43-45. (In Hebrew).
  • Meir, S., Tamari, G., Salim, S., Tamari, Y. and Philosoph-Hadas, S. (2001). Cotinus: new possibilites for improving vase life. Bulletin of Israeli Flower Growers 7: 67-70. (In Hebrew).
  • Shahak, Y., Lahav, T., Shpigel, E., Philosoph-Hadas, S., Meir, S., Orenshtein, H., Gussakovsky, Y., Ratner, K., Giller, Y., Shaptzisky, S, Zur, N., Rosenberger, I., Gniloyn, R. and Gal, Z. (2002). Growing Aralia and Monstera leaves under colored shading nets. Olam Poreah 13: 60-62. (In Hebrew).
  • Zur, N., Gilad, Z., Meir, A., Kamenetzky, R., Barzilay, A., Philosoph-Hadas, S., Droby, S. and Luria, G. (2002). Eremurus corms: adaptation of storage techniques to the conditions of the Jordan Valley. Olam Poreah 13: 58-59. (In Hebrew).
  • Friedman, H., Vos, J.W., Hepler, P.K., Meir, S., Halevy, A.H. and Philosoph-Hadas, S. (2003). The role of actin filaments in the gravitropic response of snapdragon flowering shoots. Planta 216 (6): 1034-1042.
  • Friedman, H., Meir, S., Halevy, A.H. and Philosoph-Hadas, S. (2003). Characterization of the asymmetric growth of gravistimulated snapdragon spikes by stem and cell dimension analyses. Am. J. Bot. 90 (6): 849-856.
  • Friedman, H., Meir, S., Philosoph-Hadas, S. and Halevy, A.H. (2003). Effect of octanoic acid on ethylene-mediated processes in Arabidopsis. Plant Growth Regulation: 40(3): 239-247.
  • Friedman, H., Meir, S., Halevy, A.H. and Philosoph-Hadas, S. (2003). Inhibition of the gravitropic bending response of flowering shoots by salicylic acid. Plant Science: 165: 905-911.
  • Philosoph-Hadas, S., Berkovits-Simantov, R., Friedman, H., Meir, S. and Halevy, A.H. (2003). Role of ethylene in modulating auxin action during the gravitropic response of cut snapdragon spikes. In: Biology and Biotechnology of the Plant Hormone Ethylene III (M. Vendrell, H. Klee, J.C. Pech and F. Romojaro, eds.), pp. 311-312. IOS Press, Amsterdam.
  • Shlomo, E., Salim, S., Philosoph-Hadas, S. and Meir, S. (2003). Euphorbia fulgens: preliminary observations towards development of treatments with preservative solutions and growth regulators for extending vase life. Olam Poreah 23: 50-52 (In Hebrew).
  • Meir, S., Philosoph-Hadas, S., Salim, S. and Tamari, G. (2004). Ornamental branches of Pelargonium acerifolium: application of spray treatments with gibberellin and rovral before harvest for extending vase life. Olam Poreah: 31: 46-50. (In Hebrew).
  • Meir, S., Salim, S. and Philosoph-Hadas, S. (2004). Leonotis leonurus: Development of postharvest treatments for cut flowers. Olam Poreah: 34: 56-59. (In Hebrew).
  • Meir, S., Salim, S., Mor, Y. and Philosoph-Hadas, S. (2003). Lisianthus - improving vase life by addition of cytokinin to the recommended pulsing solution. Olam Poreah 29: 44-46 (In Hebrew).
  • Philosoph-Hadas, S., Golan, O., Rosenberger, I., Salim, S., Kochaneck, B. and Meir, S. (2004). Efficiency of 1-MCP in neutralizing ethylene effects in cut flowers and potted plants following simultaneous or sequential application. Acta Hortic. (In press).
  • Meir, S., Droby, S., Kochaneck, B., Salim, S. and Philosoph-Hadas, S. (2004). Use of methyl jasmonate for suppression of Botrytis rot in various cultivars of cut rose flowers. Acta Hortic. (In press).
  • Woltering, A.J., Balk, P.A., Mariska, A., Nijenhuis de Vries, A., Faivre, M., Ruys, G., Somhorst, D., Philosoph-Hadas, S., and Freidman, H. (2004). A tissue-specific auxin-responsive 1-aminocyclopropane-1-carboxylate synthase is responsible for differential ethylene production in gravistimulated Antirrhinum majus L. flower stems. Planta (In press).
  • Woltering, E.J., Balk, P.A., Nijenhuis-de Vries, M.A., Faivre, M., Ruys, G., Somhorst, D., Philosoph-Hadas, S. and Friedman, H. (2004). Regulation and role of differential ethylene biosynthesis in gravistimulated Antirrhinum majus flower stems. Acta Hortic. (In press).
Updated on: 20/03/08 19:24
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