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Investigations on the resistance of plants to powdery mildew III. Basis for the horizontal resistance of Ribes cv. to Sphaerotheca mors-uvae / Untersuchungen über die Resistenz von Pflanzen gegenüber echten Mehltaupilzen III. Grundlage der horizontalen Resistenz von Ribes cv. gegenüber Sphaerotheca mors-uvae

K. H. Temmen, W. Gruppe and E. Schlösser
Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz / Journal of Plant Diseases and Protection
Vol. 87, No. 3 (1980), pp. 129-136
Published by: Verlag Eugen Ulmer KG
Stable URL: http://www.jstor.org/stable/43213534
Page Count: 8
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Investigations on the resistance of plants to powdery mildew III. Basis for the horizontal resistance of Ribes cv. to Sphaerotheca mors-uvae / Untersuchungen über die Resistenz von Pflanzen gegenüber echten Mehltaupilzen III. Grundlage der horizontalen Resistenz von Ribes cv. gegenüber Sphaerotheca mors-uvae
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Abstract

Leaf stages of Ribes cv., which differ in their susceptibility to American gooseberry mildew (Sphaerotheca mors-uvae), also differ in the quantity of cytoplasm in their epidermal cells. The complete asexual life cycle of the fungus appears to be linked to epidermal cells completely filled with cytoplasm, while partially vacuolized cells allow only limited fungal development. This phenomenon is considered to be the basis for the horizontal resistance of Ribes cv. to Sphaerotheca mors-uvae. Blattstadien von Ribes cv., die unterschiedlich anfällig gegenüber dem Amerikanischen Stachelbeermehltau sind, unterscheiden sich auch im Cytoplasmagehalt ihrer Epidermiszellen. Der vollständige asexuelle Lebenszyklus des Pilzes scheint nur an Epidermiszellen möglich zu sein, die vollständig mit Cytoplasma angefüllt sind. Teilweise vakuolisierte Zellen erlauben nur eine begrenzte Pilzentwicklung. Dieses Phänomen wird als Grundlage der horizontalen Resistenz von Ribes cv. gegenüber Sphaerotheca mors-uvae angesehen.

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