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Parasitology
Spiegel, Y., Department of Nematology, Agricultural Research Organization, Volcani Center, Bet Dagan 50-250, Israel
Kahane, I., Dept. Memb. and Ultrastructure Res., Hebrew University, 'Hadassah' Medical School, Jerusalem, Israel
Cohen, L., Department of Nematology, Agricultural Research Organization, Volcani Center, Bet Dagan 50-250, Israel
Sharon, E., Department of Nematology, Agricultural Research Organization, Volcani Center, Bet Dagan 50-250, Israel
Characterization of surface coat (SC) proteins including carbohydrate- binding proteins and glycoproteins of the plant-parasitic nematode Meloidogyne javanica 2nd-stage juvenile (J2) is reported. Extraction of surface proteins with sodium dodecyl sulfate (SDS) and separation by denaturing polyacrylamide gel electrophoresis (SDS-PAGE) results with bands at 6, 9, 14, 22, 26, 31, 46, 49, 58, 66, 80, 205 and 250 kDa. On Western blots, the neoglycoprotein, fucosylated, mannosylated- and glucosylated- bovine serum albumin, reacted with the 14, 22, 26, 58 and 66 kDa bands. The lectins, Concanavalin A and wheat-germ agglutinin (WGA) labelled surface protein bands of 6, 9, 14, 31, 58 and 66 kDa; WGA also labelled the 22 and 26 kDa bands. Biotin reagents were used to specifically trace surface proteins on live J2. SDS-PAGE of biotinylated J2 extracts revealed only 2 specific biotin-protein bands at 46 and 49 kDa. The labile and transitory nature of Meloidogyne javanica SC was demonstrated by the dynamics of human red blood cells (HRBC) adherence to J2 of different ages. HRBC adherence was also used to demonstrate the SC recovery of detergent-treated J2, which was further exhibited in the SDS-PAGE profiles.
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Meloidogyne javanica surface proteins: Characterization and lability
115
Spiegel, Y., Department of Nematology, Agricultural Research Organization, Volcani Center, Bet Dagan 50-250, Israel
Kahane, I., Dept. Memb. and Ultrastructure Res., Hebrew University, 'Hadassah' Medical School, Jerusalem, Israel
Cohen, L., Department of Nematology, Agricultural Research Organization, Volcani Center, Bet Dagan 50-250, Israel
Sharon, E., Department of Nematology, Agricultural Research Organization, Volcani Center, Bet Dagan 50-250, Israel
Meloidogyne javanica surface proteins: Characterization and lability
Characterization of surface coat (SC) proteins including carbohydrate- binding proteins and glycoproteins of the plant-parasitic nematode Meloidogyne javanica 2nd-stage juvenile (J2) is reported. Extraction of surface proteins with sodium dodecyl sulfate (SDS) and separation by denaturing polyacrylamide gel electrophoresis (SDS-PAGE) results with bands at 6, 9, 14, 22, 26, 31, 46, 49, 58, 66, 80, 205 and 250 kDa. On Western blots, the neoglycoprotein, fucosylated, mannosylated- and glucosylated- bovine serum albumin, reacted with the 14, 22, 26, 58 and 66 kDa bands. The lectins, Concanavalin A and wheat-germ agglutinin (WGA) labelled surface protein bands of 6, 9, 14, 31, 58 and 66 kDa; WGA also labelled the 22 and 26 kDa bands. Biotin reagents were used to specifically trace surface proteins on live J2. SDS-PAGE of biotinylated J2 extracts revealed only 2 specific biotin-protein bands at 46 and 49 kDa. The labile and transitory nature of Meloidogyne javanica SC was demonstrated by the dynamics of human red blood cells (HRBC) adherence to J2 of different ages. HRBC adherence was also used to demonstrate the SC recovery of detergent-treated J2, which was further exhibited in the SDS-PAGE profiles.
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