A new class of ubiquitin extension proteins secreted by the dorsal pharyngeal gland in plant parasitic cyst nematodes |
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Authors: | Tytgat Tom Vanholme Bartel De Meutter Jan Claeys Myriam Couvreur Marjolein Vanhoutte Isabelle Gheysen Greetje Van Criekinge Wim Borgonie Gaetan Coomans August Gheysen Godelieve |
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Institution: | Department of Biology, Section Nematology, Ghent University, K.L. Ledeganckstraat 35, B-9000 Gent, Belgium. |
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Abstract: | By performing cDNA AFLP on pre- and early parasitic juveniles, we identified genes encoding a novel type of ubiquitin extension proteins secreted by the dorsal pharyngeal gland in the cyst nematode Heterodera schachtii. The proteins consist of three domains, a signal peptide for secretion, a mono-ubiquitin domain, and a short C-terminal positively charged domain. A gfp-fusion of this protein is targeted to the nucleolus in tobacco BY-2 cells. We hypothesize that the C-terminal peptide might have a regulatory function during syncytium formation in plant roots. |
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