Der Infektionsverlauf von Pilzen bei Kulturpflanzen

Description

Um Pflanzen zu infizieren, differenzieren Pilze besonders gestaltete Infektionsstrukturen aus. Dies sind Modifikationen von
Hyphen, mit denen die Pilze die Blattoberfläche erkennen, sich z.B. über der Spaltöffnung festsetzen oder in das Blatt
eindringen. Im Blatt werden Saugorgane ausgebildet um die Nährstoffe aus den Zellen der Pflanze aufzunehmen. Wir
untersuchen wie die Pilze dies bewerkstelligen und wie die Pflanze den Pilz abwehrt.

Plant pathogenic fungi differentiate highly specialized infection structures in order to penetrate the host plant. They
help the fungus to recognize the leaf surface, to penetrate into the leaf and to take up nutrients from host cells. We
study the differentiation of these fungal structures and characterize the defense reactions a plant produces to wall off
the fungus.

Institutions
  • FB Biologie
Publications
    Mendgen, Kurt; Hahn, Michael G.; Deising, Holger(1996): Morphogenesis and mechanisms of penetration by plant-pathogenic fungi Annual Review of Phytopathology ; 34 (1996), 1. - S. 364-386. - ISSN 0066-4286. - eISSN 1545-2107

Morphogenesis and mechanisms of penetration by plant-pathogenic fungi

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Infection structures of phytopathogenic fungi are modified hyphae specialized for the invasion of plant tissues. Initial events are adhesion to the cuticle and directed growth of the germ tube on the plant surface. At the site of penetration, appressoria are often formed that may have melanized walls and develop high turgor pressure to support the penetration process. The penetration hypha accumulates components of the cytoskeleton in the tip and secretes a variety of cell wall degrading enzymes in a highly regulated fashion in order to penetrate the cuticle and the plant cell wall. This article reviews recent papers on the cytology, physiology, and molecular biology of the penetration process.

Origin (projects)

Funding sources
NameProject no.DescriptionPeriod
Ausschuss für Forschungsfragen88/79no information
Further information
Period: since