Efraim Lewinsohn

Summary

Affiliation: Bet Dagan
Country: Israel

Publications

  1. pmc Branched-chain and aromatic amino acid catabolism into aroma volatiles in Cucumis melo L. fruit
    Itay Gonda
    Institute of Plant Sciences, Newe Ya ar Research Center, Agricultural Research Organization, PO Box 1021, Ramat Yishay 30095, Israel
    J Exp Bot 61:1111-23. 2010
  2. ncbi request reprint Dual role of the pigmentation gene B in affecting carotenoid and vitamin E content in squash (Cucurbita pepo) mesocarp
    Yaakov Tadmor
    Department of Field and Vegetable Crops, Agricultural Research Organization, Newe Ya ar Reseach Center, Ramat Yishay 30 095, Israel
    J Agric Food Chem 53:9759-63. 2005
  3. ncbi request reprint Carotenoid pigmentation affects the volatile composition of tomato and watermelon fruits, as revealed by comparative genetic analyses
    Efraim Lewinsohn
    Institute of Field and Vegetable Crops, Newe Ya ar Research Center, Agricultural Research Organization, P O Box 1021, Ramat Yishay, Israel
    J Agric Food Chem 53:3142-8. 2005
  4. pmc Study of 'Redhaven' peach and its white-fleshed mutant suggests a key role of CCD4 carotenoid dioxygenase in carotenoid and norisoprenoid volatile metabolism
    Federica Brandi
    Consiglio per la Ricerca in Agricoltura, Unità di Ricerca per la Frutticoltura Forlì CRA FRF, via la Canapona 1 bis, 47100 Forli, Italy
    BMC Plant Biol 11:24. 2011
  5. doi request reprint Overexpression of the lemon basil alpha-zingiberene synthase gene increases both mono- and sesquiterpene contents in tomato fruit
    Rachel Davidovich-Rikanati
    Department of Vegetable Crops, Newe Ya ar Research Center, Agricultural Research Organization, P O Box 1021, Ramat Yishay 30095, Israel
    Plant J 56:228-38. 2008
  6. doi request reprint Catabolism of L-methionine in the formation of sulfur and other volatiles in melon (Cucumis melo L.) fruit
    Itay Gonda
    Institute of Plant Sciences, Newe Ya ar Research Center, Agricultural Research Organization, PO Box 1021, Ramat Yishay 30095, Israel
    Plant J 74:458-72. 2013
  7. doi request reprint The molecular and biochemical basis for varietal variation in sesquiterpene content in melon (Cucumis melo L.) rinds
    Vitaly Portnoy
    Institute of Plant Sciences, Newe Ya ar Research Center, Agricultural Research Organization, P O Box 1021, Ramat Yishay 30095, Israel
    Plant Mol Biol 66:647-61. 2008
  8. doi request reprint Benzaldehyde is a precursor of phenylpropylamino alkaloids as revealed by targeted metabolic profiling and comparative biochemical analyses in Ephedra spp
    Raz Krizevski
    Department of Aromatic, Medicinal and Spice Crops, Newe Ya ar Research Center, Agricultural Research Organization, Ramat Yishay 30095, Israel
    Phytochemistry 81:71-9. 2012
  9. pmc Volatile ester formation in roses. Identification of an acetyl-coenzyme A. Geraniol/Citronellol acetyltransferase in developing rose petals
    Moshe Shalit
    Department of Vegetable Crops, Newe Ya ar Research Center, Agricultural Research Organization, P O Box 1021, Ramat Yishay 30095, Israel
    Plant Physiol 131:1868-76. 2003
  10. doi request reprint Enantioselective monoterpene alcohol acetylation in Origanum, Mentha and Salvia species
    Olga Larkov
    Department of Vegetable Crops, Agricultural Research Organization ARO, Newe Ya ar Research Center, P O Box 1021, Ramat Yishay 30095, Israel
    Phytochemistry 69:2565-71. 2008

Collaborators

Detail Information

Publications29

  1. pmc Branched-chain and aromatic amino acid catabolism into aroma volatiles in Cucumis melo L. fruit
    Itay Gonda
    Institute of Plant Sciences, Newe Ya ar Research Center, Agricultural Research Organization, PO Box 1021, Ramat Yishay 30095, Israel
    J Exp Bot 61:1111-23. 2010
    ....
  2. ncbi request reprint Dual role of the pigmentation gene B in affecting carotenoid and vitamin E content in squash (Cucurbita pepo) mesocarp
    Yaakov Tadmor
    Department of Field and Vegetable Crops, Agricultural Research Organization, Newe Ya ar Reseach Center, Ramat Yishay 30 095, Israel
    J Agric Food Chem 53:9759-63. 2005
    ..These results indicate that the B gene, which affects both carotenoids and tocopherols, may play a regulatory role in the flux of the isoprenoid pathway products...
  3. ncbi request reprint Carotenoid pigmentation affects the volatile composition of tomato and watermelon fruits, as revealed by comparative genetic analyses
    Efraim Lewinsohn
    Institute of Field and Vegetable Crops, Newe Ya ar Research Center, Agricultural Research Organization, P O Box 1021, Ramat Yishay, Israel
    J Agric Food Chem 53:3142-8. 2005
    ....
  4. pmc Study of 'Redhaven' peach and its white-fleshed mutant suggests a key role of CCD4 carotenoid dioxygenase in carotenoid and norisoprenoid volatile metabolism
    Federica Brandi
    Consiglio per la Ricerca in Agricoltura, Unità di Ricerca per la Frutticoltura Forlì CRA FRF, via la Canapona 1 bis, 47100 Forli, Italy
    BMC Plant Biol 11:24. 2011
    ..Two contrasted cultivars, the yellow-fleshed 'Redhaven' (RH) and its white-fleshed mutant 'Redhaven Bianca' (RHB) were examined...
  5. doi request reprint Overexpression of the lemon basil alpha-zingiberene synthase gene increases both mono- and sesquiterpene contents in tomato fruit
    Rachel Davidovich-Rikanati
    Department of Vegetable Crops, Newe Ya ar Research Center, Agricultural Research Organization, P O Box 1021, Ramat Yishay 30095, Israel
    Plant J 56:228-38. 2008
    ....
  6. doi request reprint Catabolism of L-methionine in the formation of sulfur and other volatiles in melon (Cucumis melo L.) fruit
    Itay Gonda
    Institute of Plant Sciences, Newe Ya ar Research Center, Agricultural Research Organization, PO Box 1021, Ramat Yishay 30095, Israel
    Plant J 74:458-72. 2013
    ..Our results indicate that L-methionine is a precursor of both sulfur and non-sulfur aroma volatiles in melon fruit...
  7. doi request reprint The molecular and biochemical basis for varietal variation in sesquiterpene content in melon (Cucumis melo L.) rinds
    Vitaly Portnoy
    Institute of Plant Sciences, Newe Ya ar Research Center, Agricultural Research Organization, P O Box 1021, Ramat Yishay 30095, Israel
    Plant Mol Biol 66:647-61. 2008
    ..The genes are differentially transcriptionally regulated during fruit development and according to variety and are likely to be associated with chemical differences responsible for the unique aromas of melon varieties...
  8. doi request reprint Benzaldehyde is a precursor of phenylpropylamino alkaloids as revealed by targeted metabolic profiling and comparative biochemical analyses in Ephedra spp
    Raz Krizevski
    Department of Aromatic, Medicinal and Spice Crops, Newe Ya ar Research Center, Agricultural Research Organization, Ramat Yishay 30095, Israel
    Phytochemistry 81:71-9. 2012
    ..foeminea than in E. sinica. Our studies further support that benzaldehyde is the metabolic precursor to phenylpropylamino alkaloids in E. sinica...
  9. pmc Volatile ester formation in roses. Identification of an acetyl-coenzyme A. Geraniol/Citronellol acetyltransferase in developing rose petals
    Moshe Shalit
    Department of Vegetable Crops, Newe Ya ar Research Center, Agricultural Research Organization, P O Box 1021, Ramat Yishay 30095, Israel
    Plant Physiol 131:1868-76. 2003
    ..8 kD, pI of 5.45, and is active as a monomer. The RhAAT1 gene was expressed exclusively in floral tissue with maximum transcript levels occurring at stage 4 of flower development, where scent emission is at its peak...
  10. doi request reprint Enantioselective monoterpene alcohol acetylation in Origanum, Mentha and Salvia species
    Olga Larkov
    Department of Vegetable Crops, Agricultural Research Organization ARO, Newe Ya ar Research Center, P O Box 1021, Ramat Yishay 30095, Israel
    Phytochemistry 69:2565-71. 2008
    ..majorana AAT produced a mixture of (R)- and (S)-linalyl acetate with a ratio of 6:4. V(max) of O. dayi acetylation activity was 30-fold higher for (R)-linalool, whereas in O. majorana no such differences were found...
  11. ncbi request reprint Developmental and varietal differences in volatile ester formation and acetyl-CoA: alcohol acetyl transferase activities in apple (Malus domestica Borkh.) fruit
    Doron Holland
    Institute of Field Crops and Horticulture, Agricultural Research Organization, Newe Ya ar Research Center, Ramat Yishay 30095, Israel
    J Agric Food Chem 53:7198-203. 2005
    ..Our data strongly suggest that different AAT activities are operational in apple tissues and cultivars and that these differences contribute to the variation observed in the accumulation of volatile acetates...
  12. ncbi request reprint Functional characterization of CmCCD1, a carotenoid cleavage dioxygenase from melon
    Mwafaq Ibdah
    Institute of Plant Sciences, Newe Ya ar Research Center, Agricultural Research Organization, P O Box 1021, Ramat Yishay 30095, Israel
    Phytochemistry 67:1579-89. 2006
    ..Thus, the accumulation of beta-ionone in melon fruit is probably limited by the availability of carotenoid substrate...
  13. doi request reprint Naturally occurring norephedrine oxazolidine derivatives in khat (Catha edulis)
    Raz Krizevski
    Department of Aromatic, Medicinal and Spice Crops, Newe Ya ar Research Center, Agricultural Research Organization, Ramat Yishay, Israel
    Planta Med 78:838-42. 2012
    ..edulis...
  14. doi request reprint Genetics of flavonoid, carotenoid, and chlorophyll pigments in melon fruit rinds
    Yaakov Tadmor
    Newe Yaar Research Center, ARO, PO Box 1021, Ramat Yishay 30095, Israel
    J Agric Food Chem 58:10722-8. 2010
    ....
  15. doi request reprint Composition and stereochemistry of ephedrine alkaloids accumulation in Ephedra sinica Stapf
    Raz Krizevski
    Department of Aromatic, Medicinal and Spice Crops, Newe Ya ar Research Center, Agricultural Research Organization, Ramat Yishay, Israel
    Phytochemistry 71:895-903. 2010
    ..sinica stems and that the activity of (S)-cathinone reductases directs and determines the stereochemical branching of the pathway. Further methylations are likely due to N-methyltransferase activities...
  16. doi request reprint Genetic and chemical characterization of an EMS induced mutation in Cucumis melo CRTISO gene
    Navot Galpaz
    Department of Vegetable Crops and Plant Genetics, Agricultural Research Organization, Newe Ya ar Research Center, P O Box 1021, Ramat Yishay 30 095, Israel
    Arch Biochem Biophys 539:117-25. 2013
    ..Mutants accumulating pro-lycopene have been reported in both tomato and watermelon fruits, however, this is the first report of a non-lycopene accumulating fruit showing this phenomenon...
  17. ncbi request reprint Enrichment of tomato flavor by diversion of the early plastidial terpenoid pathway
    Rachel Davidovich-Rikanati
    Department of Vegetable Crops, Newe Ya ar Research Center, Agricultural Research Organization, PO Box 1021, Ramat Yishay, 30095 Israel
    Nat Biotechnol 25:899-901. 2007
    ..Monoterpene accumulation was at the expense of reduced lycopene accumulation. Similar approaches may be applicable for carotenoid-accumulating fruits and flowers of other species...
  18. ncbi request reprint Aroma biosynthesis in strawberry: s-adenosylmethionine:furaneol o-methyltransferase activity in ripening fruits
    Noa Lavid
    Department of Vegetable Crops, Agricultural Research Organization, Newe Ya ar Research Center, P O Box 1021, Ramat Yishay 30 095, Israel
    J Agric Food Chem 50:4025-30. 2002
    ..It is suggested that Furaneol methylation is mediated by an O-methyltransferase activity and that this activity increases during fruit ripening...
  19. doi request reprint Formation of Norisoprenoid Flavor Compounds in Carrot ( Daucus carota L.) Roots: Characterization of a Cyclic-Specific Carotenoid Cleavage Dioxygenase 1 Gene
    Mosaab Yahyaa
    Newe Ya ar Research Center, Agricultural Research Organization, Post Office Box 1021, Ramat Yishay 30095, Israel
    J Agric Food Chem 61:12244-52. 2013
    ..No cleavage products were found when DcCCD1 was co-expressed in E. coli strains accumulating non-cyclic carotenoids, such as phytoene or lycopene. Our results suggest a role for DcCCD1 in carrot flavor biosynthesis. ..
  20. doi request reprint Metabolism of soluble sugars in developing melon fruit: a global transcriptional view of the metabolic transition to sucrose accumulation
    Nir Dai
    Institute of Plant Science, Agricultural Research Organization, Bet Dagan, Israel
    Plant Mol Biol 76:1-18. 2011
    ....
  21. ncbi request reprint Identification of malodorous, a wild species allele affecting tomato aroma that was aelected against during domestication
    Yaakov Tadmor
    Institute of Field and Vegetable Crops, Newe Ya ar Research Center, Agricultural Research Organization, P O Box 1021, Ramat Yishay, Israel
    J Agric Food Chem 50:2005-9. 2002
    ..The findings provide a genetic explanation for one of the aroma changes that occurred during the domestication of the tomato...
  22. pmc O-methyltransferases involved in the biosynthesis of volatile phenolic derivatives in rose petals
    Noa Lavid
    Vegetable Crops, Newe Ya ar Research Center, Agricultural Research Organization, P O Box 1021, Ramat Yishay, 30095, Israel
    Plant Physiol 129:1899-907. 2002
    ..The peak in the levels of OOMT1 and OOMT2 transcripts in the flowers coincides with peak OMT activity and with the emission of orcinol dimethyl ether...
  23. doi request reprint Distribution of primary and specialized metabolites in Nigella sativa seeds, a spice with vast traditional and historical uses
    Ilan Botnick
    Department of Vegetable Crops, Newe Ya ar Research Center, Agricultural Research Organization, P O Box 1021, Ramat Yishay 30095, Israel
    Molecules 17:10159-77. 2012
    ..Chemical analyses shed light to the ample traditional and historical uses of this plant...
  24. ncbi request reprint Developmental patterns of phenylpropylamino alkaloids accumulation in khat (Catha edulis, Forsk.)
    Raz Krizevski
    Department of Aromatic, Medicinal and Spice Crops, Newe Ya ar Research Center, Agricultural Research Organization, PO Box 1021, Ramat Yishay 30095, Israel
    J Ethnopharmacol 114:432-8. 2007
    ..We propose that (-)-cathinone is a biosynthetic precursor of (+)-cathine and (-)-norephedrine in khat leaves...
  25. ncbi request reprint Isolation, cloning and expression of a multifunctional O-methyltransferase capable of forming 2,5-dimethyl-4-methoxy-3(2H)-furanone, one of the key aroma compounds in strawberry fruits
    Martina Wein
    , , Am Hubland, , Germany
    Plant J 31:755-65. 2002
    ..In addition, it is concluded that the Strawberry-OMT plays an important role in the biosynthesis of strawberry volatiles such as vanillin and DMMF...
  26. ncbi request reprint Changes in sugars, acids, and volatiles during ripening of koubo [Cereus peruvianus (L.) Miller] fruits
    Racheli Ninio
    Department of Life Sciences and Institutes for Applied Research, Ben Gurion University of the Negev, P O Box 653, Beer Sheva 84105, Israel
    J Agric Food Chem 51:797-801. 2003
    ..07 g/100 g fresh weight. Prominent accumulation of aroma volatiles occurred toward the end of the ripening process. The main volatile found in the ripe fruit was linalool, reaching concentrations of 1.5-3.5 microg/g fresh weight...
  27. ncbi request reprint Characterization of monkey orange (Strychnos spinosa Lam.), a potential new crop for arid regions
    Yaron Sitrit
    The Institutes for Applied Research, Ben Gurion University of the Negev, P O Box 653, Beer Sheva 84105, Israel
    J Agric Food Chem 51:6256-60. 2003
    ..The main volatiles present in the peel of ripe fruits were phenylpropanoids, trans-isoeugenol being the major compound...
  28. ncbi request reprint Citrus fruit flavor and aroma biosynthesis: isolation, functional characterization, and developmental regulation of Cstps1, a key gene in the production of the sesquiterpene aroma compound valencene
    Liat Sharon-Asa
    Institute of Horticulture, The Volcani Center ARO, PO Box 6, Bet Dagan 50250, Israel
    Plant J 36:664-74. 2003
    ..Isolation of the gene encoding valencene synthase provides a tool for an in-depth study of the regulation of aroma compound biosynthesis in citrus and for metabolic engineering for fruit flavor characteristics...
  29. doi request reprint Biosynthesis of plant-derived flavor compounds
    Wilfried Schwab
    Biomolecular Food Technology, Technical University Munich, 85354 Freising, Lise Meitner Strasse 34, Germany
    Plant J 54:712-32. 2008
    ..Major progress has resulted from the use of molecular and biochemical techniques, and a large number of genes encoding enzymes of volatile biosynthesis have recently been reported...