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An attack of the plant parasite Cuscuta reflexa induces the expression of attAGP : an attachment protein of the host tomato

Albert, Markus and Belastegui-Macadam, X. and Kaldenhoff, Ralf (2006):
An attack of the plant parasite Cuscuta reflexa induces the expression of attAGP : an attachment protein of the host tomato.
In: The plant journal, pp. 548-556, 48, [Article]

Item Type: Article
Erschienen: 2006
Creators: Albert, Markus and Belastegui-Macadam, X. and Kaldenhoff, Ralf
Title: An attack of the plant parasite Cuscuta reflexa induces the expression of attAGP : an attachment protein of the host tomato
Language: English
Journal or Publication Title: The plant journal
Volume: 48
Divisions: 10 Department of Biology
10 Department of Biology > Applied Plant Sciences
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Date Deposited: 20 Nov 2008 08:24
License: [undefiniert]
Alternative Abstract:
Alternative abstract Language
Dodder or Cuscutaceae are holoparasitic plants subsisting on other dicotyledonous plants. The infection process is initiated by adherence of Cuscuta prehaustoria to the host surface, followed by penetration attempts by hyphae. In the case of a successful infection, these organs connect the parasite's vascular tissue to that of the host. Here we show that contact of Cuscuta reflexa prehaustoria to tomato induces the expression of a new arabinogalactan protein (AGP), attAGP, in the tomato precisely at the site of dodder attack. We show that attAGP is a plasma membrane-bound cell wall-localized protein. Using the RNAi technique and attAGP-targeted virus-induced gene silencing, we observed a correlation between attAGP expression level and force of attachment of the parasite to host tomatoes. If the expression level of attAGP was reduced, the C. reflexa attachment capability was significantly reduced, too. We conclude that C. reflexa infection induced a signal in the host leading to expression of tomato attAGP, which promotes the parasite's adherence.English
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