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

Typ des Eintrags: Artikel
Erschienen: 2006
Autor(en): Albert, Markus ; Belastegui-Macadam, X. ; Kaldenhoff, Ralf
Titel: An attack of the plant parasite Cuscuta reflexa induces the expression of attAGP : an attachment protein of the host tomato
Sprache: Englisch
Titel der Zeitschrift, Zeitung oder Schriftenreihe: The plant journal
Band: 48
Fachbereich(e)/-gebiet(e): Fachbereich Biologie, Biology
Fachbereich Biologie, Biology > Angewandte Pflanzenwissenschaften, Applied Plant Sciences
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Hinterlegungsdatum: 20 Nov 2008 08:24
Alternatives oder übersetztes Abstract:
AbstractSprache
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.Englisch
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