En I עב
People | Site
Hello visitor | Log in
HTML tutorial HTML tutorial HTML tutorial HTML tutorial HTML tutorial HTML tutorial
research_title.jpg research_logo.gif
About Institutes Public Relations Technology Transfer Students\International Information Center (Library) Administration
שלח באימייל הדפס
Name: Sonia Philosoph-Hadas, Ph.D. (Retiree)
Units: Postharvest and Food SciencesDepartment of Postharvest Science
Research Interests / Job description  
Tel:  03-9683604 03-9683627
Cell: 050-6220604
Email:    vtsoniap@volcani.agri.gov.il
Office location:Main campus; Dept. of Postharvest Science building, ground floor
Address:Department of Postharvest Science, ARO, The Volcani Center
68 HaMaccabim Road, P.O. Box 15159, Rishon Leziyon 7528809, ISRAEL

Researcher - Lab manager team of floriculture

Head, Academic Office - Committee for Training Abroad and in Israel

Research Interests / Job description
Postharvest physiology of ornamentals, including cut flowers, ornamental branches and flower bulbs; Gravitropism of flowering shoots – physiological, cellular and molecular aspects; 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;

Selected publications (from 2005)

Philosoph-Hadas, S., Friedman, H. and Meir, S. (2005). Gravitropic Bending and Plant Hormones. In: VITAMINS & HORMONES Vol 72 (G. Litwack, ed.), Chapter 2, pp. 31-78. Academic Press/Elsevier Science. (Invited Review).

Woltering, A.J., Balk, P.A., Mariska, A., Nijenhuis de Vries, A., Faivre, M., Ruys, G., Somhorst, D., Philosoph-Hadas, S. and Friedman, H. (2005). An auxin-responsive 1-aminocyclopropane-1-carboxylate synthase is responsible for differential ethylene production in gravistimulated Antirrhinum majus L. flower stems. Planta 220: 403-413.

Friedman, H., Meir, S., Rosenberger, I, Halevy, A.H. and Philosoph-Hadas, S. (2005). Calcium antagonists inhibit bending and differential ethylene production of gravistimulated Ornithogalum ‘Nova' cut flower spikes. Postharvest Biol. Technol. 36: 9-20.

Friedman, H., Zhang, Z., Meir, S., Halevy, A.H. and Philosoph-Hadas, S. (2005). New approaches for post-harvest inhibition of undesired gravitropic bending in various snapdragon (Antirrhinum majus L.) cultivars. J. Hort. Sci. Biotechnol. 80: 433-438.

Bernstein, N., Ioffe, M., Bruner, M., Nishri, Y., Luria, G., Dori, I., Matan, E., Philosoph-Hadas, S., Umiel, N. and Hagiladi, A. (2005). Effects of supplied nitrogen form and quantity on growth and postharvest quality of Ranunculus asiaticus flowers. HortScience 40: 1879-1886.

Meir, S., Salim, S., Luria, G. and Philosoph-Hadas, S. (2005). Anemone: a new pulsing treatment with the cytokinin benzyl adenine, combined with paclobutrazol, signigicantly improves flower quality during vase life. Olam Haperach, December Issue: 56-61.

Meir, S., Droby, S., Kochaneck, B., Salim, S. and Philosoph-Hadas, S. (2005). Use of methyl jasmonate for suppression of Botrytis rot in various cultivars of cut rose flowers. Acta Hort. 669: 91-98.

Woltering, E.J., Balk, P.A., Nijenhuis-de Vries, M.A., Faivre, M., Ruys, G., Somhorst, D., Philosoph-Hadas, S. and Friedman, H. (2005). Regulation and role of differential ethylene biosynthesis in gravistimulated Antirrhinum majus flower stems. Acta Hort. 669: 213-218.

Philosoph-Hadas, S., Golan, O., Rosenberger, I., Salim, S., Kochaneck, B. and Meir, S. (2005). Efficiency of 1-MCP in neutralizing ethylene effects in cut flowers and potted plants following simultaneous or sequential application. Acta Hort. 669: 321-328.

Abebie, B., Goren, R., Huberman, M., Meir, S., Philosoph-Hadas, S. and Riov, J. (2005).  Prevention of bud and floret abscission in Cestrum cut flowers is related to the mode of transport and metabolism of synthetic auxins. Acta Hort. 682: 789-794.

Yun, H-P., Joo, S-H., Kaufman, P.B., Kim, T-W., Kirakosyan, A., Philosoph-Hadas, S., Kim, S-K., and Chang, S-C. (2006). Changes in starch and inositol 1,4,5-trisphosphate levels and auxin transport are  interrelated in graviresponding oat (Avena sativa) shoots. Plant Cell & Environm. 29: 2100-2111.

Bernstein, N., Luria, G., Matan, E., Dori, I., Bruner, M., Nishri, Y., Philosoph-Hadas, S., Ioffe, M. and Salim, S. (2007). Optimization of fertigation regime with nitrogen and potassium for growing Ranunculus asiaticus for cut flowers. Olam Haperach, July-August Issue: 54-57.

Philosoph-Hadas, S., Droby, S., Rosenberger, I., Perzelan, Y. and Meir, S. (2007). Sea transport of ornamental branches: problems and solutions. Acta Hort. 755:  267-276.

Glick, A., Philosoph-Hadas, S., Vainstein, A., Tadmor, Y., Meir, A. and Meir, S. (2007). Methyl jasmonate enhances color and carotenoid content of yellow-pigmented cut rose flowers. Acta Hort. 755: 243-250.

Meir, S., Salim, S. and Philosoph-Hadas, S. (2007). Quality improvement of cut flowers and potted plants by postharvest treatments with various auxins and cytokinins. Acta Hort. 755: 143-154.

Zhang, Z., Friedman, H., Meir, S., Rosenberger, I., Halevy, A.H. and Philosoph-Hadas, S. (2008). Microtubule reorientation in shoots precedes bending during the gravitropic response of cut snapdragon spikes. J Plant Physiol. 165: 289-296.

Abebie B, Lers A, Philosoph- Hadas S, Goren R, Riov J, Meir S (2008). Differential effects of NAA and 2,4- D in reducing floret abscission in cestrum (Cestrum elegans Schlecht) cut flowers are associated with their differential activation of Aux/ IAA homologous genes. Annals of Botany 101: 249-259.

Bernstein, N., Ioffe, M., Luria, G., Bruner, M., Nishri, Y., Philosoph-Hadas, S., Salim, S., Dori, I. and Matan, E. (2009). Evaluation of a newly developed potassium and nitrogen fertilization regime for soil cultivation of Ranunculus asiaticus. Israel J. Plant Sci. 57: 411-420.

Shtein, I., Meir, S., Perzelan, Y., Rosenberger, I., Riov, J. and Philosoph-Hadas, S. (2009). Improving water balance and vase life of cut foliage branches of Dodonaea 'Dana' by postharvest treatments. Acta Hort. 813: 225-231.

Meir, S., Salim, S. and Philosoph-Hadas, S. (2009). Leonotis leonurus as a potential new crop for cut flower production: a postharvest perspective. Acta Hort. 813: 233-240.

Philosoph-Hadas, S., Perzelan, Y. Rosenberger, I., Droby, S., and Meir, S. (2010). Leucadendron 'Safari Sunset': Posthravest treatments to improve quality of cut branches during prolonged sea shipment. Acta Hort. 869: 207-217.

Meir, S., Salim, Z., Chernov, T., Zadka, T., Riov, J. and Philosoph-Hadas, S. (2010). Improving the quality of various Grevillea cultivars grown in Israel by postharvest treatment. Acta Hort. 869: 197-205.

Meir, S., Kochanek, B., Glick, A., Lers, A., Salim, S., Burd, S., Weiss, D. and Philosoph-Hadas, S. (2010). Reduced petal pigmentation in Lisianthus cut flowers under low light conditions is mediated via decreased expression of anthocyanin biosynthesis genes. Acta Hort. 877: 1735-1744.

Meir, S., Philosoph-Hadas, S., Sundaresan, S., Selvaraj, V.K.S., Burd, S., Ophir, R., Kochanek, B., Reid, M.S., Jiang C-Z. and Lers, A. (2010). Microarray analysis of the abscission-related transcriptome in the tomato flower abscission zone in response to auxin depletion. Plant Physiol. 154 (4): 1929-1956.

Meir, S., Philosoph-Hadas, S., Sundaresan, S., Selvaraj, V.K.S., Burd, S., Ophir, R., Kochanek, B., Reid, M.S., Jiang C-Z. and Lers, A. (2011). Identification of defense-related genes newly-associated with tomato flower abscission. Plant Signaling & Behavior 6 (4): 590-593.

Bernstein, N., Ioffe, M., Luria, G., Bruner, M., Nishri, Y., Philosoph-Hadas, S., Salim, S., Dori, I. and Matan, E. (2011). Effects of K and N nutrition on function and production in Ranunculus asiaticus. Pedosphere 21(3): 288-301.

Zhang, Z., Friedman, H., Meir, S., Belausov E. and Philosoph-Hadas, S. (2011). Actomyosin mediates gravisensing and early transduction events in reoriented cut snapdragon spikes. J Plant Physiol. 168: 1176-1183.

Shtein, I., Meir, S., Riov, Y. and Philosoph-Hadas, S. (2011). Interconnection of seasonal temperature, vascular traits, leaf anatomy and hydraulic performance in cut Dodonaea 'Dana' branches. Postharvest Biol. Technol. 61: 184-192.

Bar-Dror, T., Dermastia, M., Kladnik, A., ?nidari?, MT, Novak, MP, Meir, S., Burd, S., Philosoph-Hadas, S., Ori, N., Sonego, L., Dickman, MB and Lers A. (2011). Programmed cell death occurs asymmetrically during abscission in tomato. Plant Cell 23: 4146-4163.

Philosoph-Hadas, S., Droby, S., Perzelan, Y., Bar-Tal, A., Shtein, I. Salim, S. and Meir, S. (2013). Pittosporum cut branches: Characterization and prevention of the brown spots on the variegated leaves during growth and sea transport. Acta Hort. 960: 101-113.

Meir, S., Salim, S., Huang, Y., and Philosoph-Hadas, S. (2013). Silver thiosulfate maintains floret quality of cut mini-gladiolus spikes by affecting sink-source relationships and modulating the sugar transport within the spike organs. Acta Hort. 970: 34-49.

Shtein, I., Meir, S., Shahar-Ivanov, Y., Perzelan, Y., Riov, J. and Philosoph-Hadas, S. (2015). Ethylene extends the vase life of Dodonaea ‘Dana’ cut  branches: Possible mechanisms. Acta Hort. 1104: 279-286.

Philosoph-Hadas, S., Shtein, I., Perzelan, Y., Shahar-Ivanov, Y.,

            Salim, S., Kochanek, B. and Meir, S. (2015). Postharvest

            handling and quality preservation of selected novel leafy

            ornamentals shipped by sea transport. Acta Hort. 1097: 63-72.


Philosoph-Hadas, S., Friedman, H. and Meir, S. (2015). Flowering

           Shoots of Ornamental Crops as a Model to Study Cellular and

           Molecular Aspects of Plant Gravitropism. In: Plant Gravitropism

           - Methods and Protocols (E.B. Blancaflor, ed.), Chapter 14, pp.

          171-198. Springer Series, Methods in Molecular Biology

          (Clifton, N.J.) 1309: New York: Humana Press. doi:10.1007/978

           -1-4939-2697- 8_14. (Invited Review).

Meir, S., Sundaresan, S., Riov, J., Agarwal, I. and Philosoph-Hadas,

         S. (2015). Role of auxin depletion in abscission control. Stewart

         Postharvest Review 2015, 2:2. doi:10.2212/spr.2015.2.2.

         (Invited Review).


Sundaresan, S., Philosoph-Hadas, S., Riov, J., Belausov, E., Kochanek, B., Tucker, M.L. and Meir, S. (2015). Abscission of flowers and floral organs is closely associated with alkalization of the cytosol in the abscission zone cells. J. Exp. Bot. 66: 1355-1368.

Kim, J., Sundaresan, S., Philosoph-Hadas, S., Yang, R., Meir, S., and Tucker, M.L. (2015). Examination of the abscission-associated transcriptomes for soybean, tomato and Arabidopsis highlights the conserved biosynthesis of an extensible extracellular matrix and boundary layer. Frontiers Plant Sci. 6. doi: 10.3389/fpls.2015.01109.

Sundaresan, S., Philosoph-Hadas, S., Riov, J., Mugasimangalam, R., Kuravadi, N.A., Kochanek, B., Salim, S., Tucker, M.L. and Meir, S. (2016). De novo transcriptome sequencing and development of abscission zone-specific microarray as a new molecular tool for analysis of tomato organ abscission.  Frontiers Plant Sci. 6. doi: 10.3389/fpls.2015.01258.

Bernstein, N., Shushan, S., Shargil, D., Perzelan, Y., Salim, S.,  Zadka, T., Riov, J., Sacks, M., Spiegel, E., Tamari, Y., Weizman, S., Zemach, H., Meir, S. and Philosoph-Hadas, S. (2017).  Seasonal variation in leaf damage symptoms, mineral contents, and postharvest attributes of cut foliage of Eucalyptus silver dollar (Eucalyptus cinerea). Isr. J. Plant Sci. doi.org/10.1080/ 07929978.2016.1275361, p. 1-16.


Sacks, M., Kafkafi, U., Ziv, O., Salim, S., Meir, S., Philosoph-Hadas, S., Kenig, E., Tamari, Y., Natan, R., Shlomo, E. and Riov, J. (2017). Effects of nutrient supply on production and quality of cut flowering branches of Grevillea 'Spiderman'. Isr. J. Plant Sci. doi.org/10.1080/07929978. 2017.1288398; p. 1-10.


Goldental-Cohen, S., Burstein, C., Biton, I., Ben-Sasson, S., Sadeh, A., Many, Y., Doron-Faigenboim, A., Zemach, H., Mugira, Y., Schneider, D., Birger, R., Meir, S., Philosoph-Hadas, S., Irihomovitch, V., Avidan, B., Lavee, S., and Ben-Ari, G. (2017). Ethephon induced oxidative stress in the olive leaf abscission zone enables development of a selective abscission compound. BMC Plant Biol.17: 87. doi 10.1186/s12870-017-1035-1.

Sundaresan, S., Philosoph-Hadas, S., Ma, C., Jiang, C-Z, Riov, J., Mugasimangalam, R., Kochanek, B., Salim, S., Reid, M.S., and Meir, S. (2018). The Tomato Hybrid Proline-Rich Protein regulates the abscission zone competence to respond to ethylene signals. Hortic. Res. 70: 5:28 1-17. doi 10.1038/s 41438-0033-2.

Meir S., Philosoph-Hadas S., Riov J., Tucker M.L., Patterson S.E., and Roberts J.A. (2019). Re-evaluation of the ethylene-dependent and -independent pathways in the regulation of floral and organ abscission. Opinion Article. J. Exp. Botany 70(5): 1461-1467.


Khunmuang, S., Kanlayanarat, S., Wongs-Aree, C., Meir, S., Philosoph-Hadas, S.,  Oren-Shamir, S., Ovadia, R., and Buanong, M. (2019). Ethylene induces a rapid degradation of petal anthocyanins in cut Vanda 'Sansai Blue' orchid flowers. Frontiers in Plant Sci.10 Article 1004.


Khunmuang, S., Kanlayanarat, S., Wongs-Aree, C., Meir, S., Philosoph-Hadas, S. and Buanong, M. (2019). Variability in the response to ethylene of three cultivars of cut Vanda orchid flowers. Acta Hort. (In press).


Salim, S., Philosoph-Hadas, S. and Meir, S. (2019). Prevention of

            stem-base splitting in cut Zantedeschia aethiopica flowers by

            pulsing with salt solutions. Acta Hort. (In press).


Buanong, M., Wongs-Aree, C., Philosoph-Hadas, S. and Meir, S. (2019). Delaying petal blackening of cut sacred lotus flowers by packaging conditions during storage. Acta Hort. (In press).



  • Physiology and Handling of Cut Ornamentals and their Care - Undergraduate Course for 3rd year, first semester; at the Faculty of Agriculture, The Hebrew University of Jerusalem, Rehovot.





























Updated on: 11/05/20 08:35
govi semel
Copyright © 2008, The State of Israel. All Rights Reserved. Terms of use I Contact Us I Jobs I F.A.Q I Site administrator