1995
DOI: 10.1007/bf01276929
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Sequential deposition of plant glycoproteins and polysaccharides at the host-parasite interface ofUromyces vignae andVigna sinensis

Abstract: Summary. Monokaryotic haustoria (M-haustoria) of Uromyces vig-nae in Vigna sinensis cells are surrounded by an extrahaustorial matrix (ema) and the invaginated host plasmalemma, the extrahaustorial membrane (ehm). The ema was characterized with antibodies against components of the plant cell wall; the ema contained hydroxyproline-rich glycoproteins and arabinogalactans/arabinogalactan proteins, both at a higher concentration close to the ehm. Haustoria with large vacuoles had the ema encased by additional laye… Show more

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Cited by 49 publications
(28 citation statements)
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“…The absence of(1 --* 3)-~-D-glucans (callose) seems to characterize compatible biotrophic interactions. Defense reactions, such as encapsulation of rust haustoria started with the deposition of (1 ~ 3)-[3-D-glucans around these structures (Stark-Urnau and Mendgen 1995). Also, in mycorrhizaresistant peas, (1-,3)-[~-glucan synthesis was induced after infection with Glomus mossae (Gollote et al 1993).…”
Section: Discussionmentioning
confidence: 94%
“…The absence of(1 --* 3)-~-D-glucans (callose) seems to characterize compatible biotrophic interactions. Defense reactions, such as encapsulation of rust haustoria started with the deposition of (1 ~ 3)-[3-D-glucans around these structures (Stark-Urnau and Mendgen 1995). Also, in mycorrhizaresistant peas, (1-,3)-[~-glucan synthesis was induced after infection with Glomus mossae (Gollote et al 1993).…”
Section: Discussionmentioning
confidence: 94%
“…It bridges fungal and host plasma membranes and thus seals the plant apoplast from a newly generated interfacial apoplast around the haustorial body. This extrahaustorial compartment consists of a thin fungal wall with new carbohydrate components [39] and a prominent extrahaustorial matrix containing plant-cell-wallrelated carbohydrates and enzymes such as β-1,3-glucanases [40,41]. It seems that the extrahaustorial interface represents the 'trade center' for the inter-organismic transfer of signals and nutrients.…”
Section: Biotrophic Developmentmentioning
confidence: 99%
“…For immunoelectron microscopy, rust-infected leaves were punched out 8 dpi and were high-pressure frozen as described (Stark Urnau and Mendgen 1995). This was followed by freeze-substitution at -80°C for 80 h in a substitution medium containing acetone/methanol (1:1 vol/vol), 0.2% uranylacetate (wt/vol), 1% osmium tetroxide (wt/vol), and 2% glutaraldehyde.…”
Section: Immunocytochemistrymentioning
confidence: 99%