Dept. of Postharvest Science of Fresh Produce
Agricultural Research Organization,
The Volcani Center,
P.O.Box 6, Bet Dagan 50250, Israel
Research Interests
Postharvest physiology and molecular biology of citrus fruit
Postharvest physiology of pomegranate fruit
Postharvest storage of guava fruit.
Molecular mechanisms involved in regulation of chilling tolerance.
Anaerobic stress and development of off-flavors in citrus fruit.
Recent Publications
Porat, R., Vinokur, V., McCollum, G.T. and Droby, S. (2002). Effects
of various elicitors on the transcription of a β-1,3-endoglucanase gene
in citrus fruit . J. Phytopathology 150: 1-6.
Droby, S., Vinokur, V., Weiss, B., Cohen, L., Daus, A., Goldschmidt, E.E.
and Porat, R. (2002). Induction of resistance to Penicillium digitatum
by the yeast biocontrol agent Candida oleophila. Phytopathology 92:
393-399.
Porat, R., Pavoncello, D., Ben-Hayyim, G. and Lurie, S. (2002). A heat
treatment induced the expression of a Na+/H+ antiport gene in citrus fruit. Plant
Science 162: 957-963.
Porat, R., Pavoncello, D., Lurie, S. and McCollum, G.T. (2002). Identification
of a grapefruit cDNA belonging to a unique class of citrus dehydrins and
characterization of its expression patterns under temperature stress conditions.
Physiol. Plant. 115: 598-603.
Porat, R., Daus, A., Weiss, B., Cohen, L. and Droby, S. (2002). Effects
of combining hot water, sodium bicarbonate and biocontrol on postharvest
decay of citrus fruit. J. Hortic. Sci. & Biotechnol. 77: 441-445.
Porat, R., Weiss, B., Cohen, L., Daus, A. and Cohen, E. (2003). Effects
of intermittent warming and temperature conditioning on the postharvest
quality of ‘Oroblanco’ citrus fruit following long-term cold
storage.
HorTechnology 13: 70-74.
Porat, R., Vinokur, V., Weiss, B., Cohen, L., Daus, A., Goldschmidt, E.E.
and Droby, S. (2003). Induction of resistance to Penicillium digitatum
in grapefruit by β- aminobutyric acid. Eur. J. Plant Pathol.
109:901-907
Porat, R., Pasentsis, K., Rozenzvieg, D, Gerasopoulos, D., Falara, V.,
Samach, A., Lurie, S. and A.K. Kanellis (2003).
Isolation of a dehydrin cDNA from orange and grapefruit citrus fruit that
is specifically induced by the combination of heat followed by chilling
temperatures.
Physiol. Plant. 120: 256-264.
Porat, R., Weiss, B., Cohen, L., Daus, A. and Aharoni, N. (2004). Reduction
of postharvest rind disorders in citrus fruit by modified atmosphere packaging.
Postharvest Biol. Technol 33: 35-43.
Rozenzvieg, D, Elmaci, C., Samach, A., Lurie, S. and Porat, R. (2004).
Isolation of four heat shock protein cDNAs from grapefruit peel tissue and
characterization of their expression in response to heat and chilling temperature
stresses. Physiol. Plant. 121: 421-428.
Hasdai, H., Elmaci, C., Goldschmidt, E.E., Droby, S. and Porat, R. (2004).
Isolation of a thioredoxin H cDNA from grapefruit peel tissue that is induced
upon infection by Penicillium digitatm and elicitation of pathogen resistance.
Physiol. Mol. Plant Pathol. 65: 277-283.
Shi, J.X., Porat, R., Goren, R. and Goldschmidt, E.E. (2005). Physiological
responses of 'Murcott' mandarins and 'Star Ruby' grapefruits to anaerobic
stress conditions and their relation to fruit taste, quality, and emission
of off-flavor volatiles. Postharvest Biol. Technol 38: 99-105.
Porat, R., Weiss, B., Cohen, L., Daus, A. and Biton, A. (2005). Effects
of polyethylene wax content and composition on taste, quality, and emission
of off-flavor volatiles in 'Mor' mandarins. Postharvest
Biol. Technol .38:
262-268.
Guy, C.L., Porat, R., and V. Hurry (2006). Plant cold and abiotic stress
gets hot. Physiol. Plant. 126 1-4.
Hasdai, M., Weiss, B., Levi, A., Samach, A. and Porat, R. (2006). Differential
responses of Arabidopsis ecotypes to cold, chilling and freezing temperatures. Annals Applied Biology (in
press).
Current Projects
Identification of genes involved in the acquisition of chilling tolerance
in citrus fruit.
Quality and export potential of new early season mandarin varieties.
Long-term storage of pomegranate fruit
Postharvest storage and handling of new guava cultivars
Analysis of chilling tolerance traits in Arabidopsis.
Ron Porat Ph.D