Publications (Selected)

• Clemens, C. D., J. Aumann, Y. Spiegel and U. Wyss. (1994). Attracted-mediated behavior of mobile stages of Heterodera schachtii. Fundamen. Appl. Nematol. 17: 569-574.
• Mor, M., U. Kushnir, Y. Kozodoi and Y. Spiegel. (1994). Pathogenicity and host-parasite interactions of the nematode Heterodera avenae and wild grasses in Israel. Phytoparasitica 22: 77-78.
• Spiegel, Y., J. Inbar, I. Kahane and Edna Sharon. (1995). Carbohydrate-recognition domains on the surface of phytophagous nematodes. Exp. Parasitol. 80: 220-227.
• Spiegel, Y. and M. A. McClure. (1995). The surface coat of plant-parasitic nematodes: chemical composition, origin and biological role - a review. J. Nematol. 27: 127-134. .3.
• Spiegel, Y., I. Chet, M. Mor, O. Kleifeld, E. Sharon and M. Bar-Eyal. (1995). Trichoderma harzianum preparation as a biocontrol agent against the root-knot nematode, Meloidogyne javanica. Nematicidal activity and preliminary evaluation of mode of action. Hassadeh 75: 67-72 (in Hebrew with summary in English).
• Sharon, E., L. Cohen, I. Kahane and Y. Spiegel. (1995). Attachment of Pasteuria penetrans spores to second-stage juveniles of the root-knot nematode Meloidogyne javanica. Phytoparasitica 23: 269-270.
• Spiegel, Y. and I. Chet. (1995). Evaluation of newly isolated microorganisms to control plant -parasitic nematodes. Phytoparasitica 23: 363.
• Sharon, E. and Y. Spiegel. (1996). Gold-conjugated reagents for the labelling of carbohydrate -recognition domains and glycoconjugates on nematode surfaces. J. Nematol. 28: 124-127.
• Spiegel, Y., M. Mor and E. Sharon. (1996). Attachment of Pasteuria penetrans spores to the surface of Meloidogyne javanica second-stage juveniles. J. Nematol. 28: 328-333.
• Cohn, E., H. Koltai, E. Sharon, and Y. Spiegel.(1996). Root- nematode interactions: recognition and pathogenicity. In: "Plant Roots: The Hidden Half" (Waisel et al., eds.), 2nd Edition. Chapter 39, pp. 783-796. Marcel Dekker Inc., New York, N. Y
• Spiegel, Y., I. Chet, M. Mor, O. Kleifeld, E. Sharon and M Bar-Eyal. (1996). Trichoderma preparation as biological control of the gall-forming nematode Meloidogyne javanica: Evaluation of the nematocidic action, and first steps in clarifying its mechanism. Hassadeh International 1: 18-22 (in English)
• Spiegel, Y., E. Sharon and I. Chet. (1996). Microbial control of plant-parasitic nematodes. 8th Int. Congress of Bacteriology and Applied Microbiology Division, Jerusalem, Israel.
• Spiegel, Y., I. Chet and Y. Oka. (1996). Accumulation of wheat germ agglutinin and barley lectin in wheat and barley roots infected with Heterodera avenae. Nematropica 26:314
• Oka, Y., I. Chet and Y. Spiegel. (1996). A protein induced by jasmonic acid and recognized by wheat germ agglutinin antibody is also induced by invasion of Heterodera avenae to oat roots. Nematropica 26:297
• Koltai, H., N. Chejanovski, B., Raccah and Y. Spiegel. (1996). Isolation and characterization of the root-knot nematode Meloidogyne javanica first collagen gene. The 3rd Int. Congress of Nematology, Guadeloupe.
• Blaxter, M. L., Y. Spiegel and H. Koltai. (1997). Regulated use of a spliced leader exon in the plant parasitic nematode Meloidogyne javanica. Mol. Biochem. Parasitol. 86: 107-110.
• Koltai, H., N. Chejanovski, B. Raccha and Y. Spiegel. (1997). The first isolated collagen gene of the root-knot nematode Meloidogyne javanica is developmentally regulated. Gene 196: 191-199.
• Oka, Y, I. Chet and Y. Spiegel. (1997). Are Pathogenesis- Related proteins induced by Meloidogyne javanica or Heterodera avenae invasion? J. Nematol. 29: 501-508.
• Spiegel, Y., I. Kahane, L. Cohen and E. Sharon. (1997). Meloidogyne javanica surface proteins: Characterization and lability. Parasitology 115: 513-519.
• Oka, Y., I. Chet, M, Mor. and Y. Spiegel. (1997). A fungal parasite of Meloidogyne javanica eggs: evaluation of its use to control the root-knot nematode. Biocon. Sci. Technol. 7: 489-497.
• Oka, Y., I. Chet and Y. Spiegel. (1997). An immunoreactive protein to wheat-germ agglutinin antibody is induced in oat roots following invasion of the cereal cyst nematode Heterodera avenae and by jasmonate. Mol. Pl.-Microbe Inter. 10: 961-969.
• Oka, Y., I. Chet and Y. Spiegel (1997). Accumulation of lectins in cereal roots invaded by the cereal cyst nematode Heterodera avenae. Physiol. Mol. Pl. Pathol. 51: 333-345
• Spiegel, Y. and E. Sharon. (1997). Control of plant parasitic nematodes in organic farms. Israel Agresearch, Vol. 7, No. 1 (in Hebrew with summery in English).
• Mor, M, S. Ben-Anat and Y. Spiegel. (1997). Tylenchulus semipenetrans, the citrus nematode, and Xiphinema brevicolle are present in the new citrus plantations in the northern Negev. Phytoparasitica 25: 247
• Koltai, H., N. Chejanovski, B. Raccah and Y. Spiegel. (1997). Isolation and characterization of a collagen gene from the root-knot nematode Meloidogyne javanica. Phytoparassitica 25: 247
• Koltai, H., N. Chejanovski, M. Blaxter, B. Raccah and Y. Spiegel. (1997). Qualitative and quantitative expression of collagen genes during the root-knot nematode development. "Parasitic helminths, from genomes to vaccines", Edinburgh, 6-9 September 1997.
• Sela, S., H. Schickler, I. Chet and Y. Spiegel (1998). Purification and characterization of a Bacillus cereus collagenolytic/proteolytic enzyme and its effect on Meloidogyne javanica cuticular proteins. Eur. J. Pl. Pathol. 104: 59-67.
• Spiegel, Y. and I. Chet. (1998). Evaluation of Trichoderma spp. as a biocontrol agent against soilborne fungi and plant-parasitic nematodes in Israel. Integ. Pest Manag. Rev. 3: 1-7.
• Mor, M. and Y. Spiegel (1998). Tylenchulus semipenetrans, the citrus nematode, and Xiphinema brevicolle are present in the new citrus plantations in the northern Negev. Alon Hanotea 52:264-269 (in Hebrew with an Abstract in English).
• Spiegel, Y., Meira Bar-Eyal, Y. Oka, Edna Sharon and I. Chet. (1998). New perspectives in biocontrol of plant-parasitic nematodes. Phytoparasitica 26:250-251.
• Sharon, E., M. Bar-Eyal, M. Mor, O. Kleifeld, I. Chet and Y. Spiegel. (1998). Biological control of Meloidogyne javanica by Trichoderma preparations: mode of action. Nematologica 44:581.
  Oka, Y, Y. Cohen and Y. Spiegel (1999). Local and systemic induced resistance to the root-knot nematode in tomato by DL-β-Amino-n-butyric acid. Phytopathology 89:1138-1143.
• Ferris, V. R., S. A. Subbotin, A. Ireholm, Y. Spiegel, J. Faghihi and J. M. Ferris (1999). Ribosomal DNA sequence analysis of Heterodera filipjevi and H. latipons isolates from Russia and comparisons with other nematode isolates. Russian Journal of Nematology 7:121-125.
• Oka, Y., S. Nacar, E. Putievsky, U. Ravid, Z. Yaniv and Y. Spiegel (2000). Nematicidal activity of essential oils and their components against the root-knot nematode. Phytopathology 90:710-715.
• Oka, Y., I. Chet, H. Koltai, M. Bar-Eyal, M. Mor, E. Sharon and Y. Spiegel. (2000). Chemical and non-chemical control of phytophagous nematodes: new perspectives. Acta Horticulturae 532: 177-182.
• Oka, Y., Hinanit Koltai, Meira Bar-Eyal, M. Mor, Edna Sharon, I. Chet and Y. Spiegel. (2000). New strategies for the control of plant-parasitic nematodes. Pest Management Science. 56:983-988.
• Sharon, E., M. Bar-Eyal, I. Chet, A. Herrera-Estrella, O. Kleifeld and Y. Spiegel. (2001). Biocontrol of the root-knot nematode Meloidogyne javanica by Trichoderma harzianum. Phytopathology, 91: 687-693.
• Liu, J., H. Koltai, N. Chejanovski and Y. Spiegel. (2001). Isolation of a novel collagen gene in Meloidogyne javanica and studies on its expression pattern. J. Parasitol., 87: 801-807.
• Sharon, E., Y. Spiegel, R. Solomon and R. H. C. Curtis. (2002). Characterization of Meloidogyne javanica surface coat using antibodies and their effect on nematode behavior. Parasitology 125:177-186.
• Koltai, H., E. Sharon, and Y. Spiegel (2002). Root- nematode interactions: recognition and pathogenicity. In: "Plant Roots: The Hidden Half" (Waisel et al., eds.), 3nd Edition. Chapter 51, pp. 933-948. Marcel Dekker Inc., New York, N. Y.
• Spiegel, Y., P. M. Burrows and M. Bar-Eyal. 2003. A chemo attractant in onion root exudates recognized by Ditylenchus dipsaci in laboratory bioassay. Phytopathology 93: 127-132.
• Sharon, E. I. Chet and Y. Spiegel (2003). Attachment of the fungus Trichoderma harzianum to the root-knot nematode Meloidogyne javanica for improved biocontrol activity. Phytoparasitica 31:414-415.
• Sharon, E., I. Chet and Y. Spiegel (2004). Parasitism of Trichoderma on root-knot nematodes - mechanisms and improved biocontrol. The 27th ESN International Symposium, Rome, Italy.
• Spiegel, Y. and E. Sharon. (2004). Phytonematode surface: chemical composition and biological role in interactions with plants and microorganisms. The International Plant Protection Congress, Beijing, China
• Spiegel, Y., I. Chet and E. Sharon. (2004). Parasitism of Trichoderma on root-knot nematodes - mechanisms and improved biocontrol. Society of Nematologists Annual Meeting, Colorado, USA.
• Dagan, Z., Y. Kapulnik and Y. Spiegel (2005). Characterization and identification of the citrus nematode, Tylenchulus semipenetrans, behavioral cues in root exudates of citrus and non-host plants. IOBC-meeting 'Multitrophic Interactions in Soil', Wageningen, the Netherlands.
• Tadmor, Z., S. Sachs, I. Chet, Y. Spiegel, I. Ravina, G. Manor and S. Yannai . (2005). An innovative approach: The use of di-nitrogen tetroxide for soil fumigation. Biosystems Engineering (In press).
• Bar-Eyal, M, E. Sharon and Y. Spiegel. (2006). Nematicidal activity of Chrysanthemum coronarium L. Eur. J. Pl. Pathol. 114: 427-433 .
• Spiegel, Y. (2006). A Book Review: Plant Parasitic Nematodes in Subtropical and Tropical Agriculture. Second Edition. Edited by M. Luc, R.A. Sikora and J. Bridge. 2005. 871 pp. CABI Publishing, UK. Eur. J. Pl. Pathol. 113:439-439.
  
  

Current Projects

• Evaluation of Trichoderma isolates as a bio-control agent against plant- parasitic nematodes.
• Optimizing nematode management by defining natural chemical bases of behavior.