Ultrastructural studies of interactions between potato leafroll virus and potato virus Y

International audienc

Localisation du virus de la mosaique du chou-fleur (CaMV) dans le noyau de cellules de Brassica pekinensis

International audienc

Localization of cauliflower mosaic virus in the cell nucleus of Brassica pekinensis

International audienc

Necrosis in Solanum tuberosum stems infected with potato virus Y by grafting

This work examined the distribution of necrosis on stems of two cultivars of potato (Ania, Glada) with different levels of resistance to PVY infection. Potato virus Y particles and/or cytoplasmic (CI) and amorphous inclusions (AI) were identified in insert and offshoot potato cells of susceptible cv. Glada. Cytoplasmic inclusions were not observed in insert and offshoot stems of resistant cv. Ania, although there were numerous deformations, degeneration and tissue necrosis. It was found that (1) necrotic reactions were the form of plant cell response for both the PVY-resistant and susceptible cultivars, (2) development of necrosis in vascular tissue did not prevent the pathogen from spreading outside the necrotic region in the less resistant cultivar (Glada), and (3) extreme resistance to PVY in potato plants, determined by the Rysto gene, was manifested in the absence of virus particles and cytoplasmic inclusions in infected plant cells

Mise en evidence du virus de la mosaique du chou-fleur (CAMV) dans le noyaux des cellules de Brassica pekinensis et de Nicotiana bigelowii

International audienc

Reaction of potato cultivars and test plants to PVY infection submicroscopical level

International audienc

Razvitie semjapochki zhjoltogo ljupina v uslovijakh infekcii rastenijj virusom BYMV

Przeprowadzono badania mikroskopowe roślin łubinu żółtego porażonego wirusem żółtej mozaiki fasoli (BYMV). Cząstki wirusa stwierdzono w wegetatywnych częściach porażonych roślin oraz w osłonkach zalążka. Wolne od wirusa i struktur cytopatologicznych tyły komórki ośrodka zalążka, makrospora i woreczek zalążkowy. Wydaje się, że opisywane w literaturze porażenie nasion przez BYMV związane jest z przenoszeniem wirusa w łupinie nasiennej.Проведены были микроскопные исследования растений жёлтого люпина, поражённого вирусом жёлтой мозаики фасоли (BYMV). Следы вируса были обнаружены в вегетативных частях и в оболочках семяпочки поражённых растений. Чистыми от вируса и цитопатологичѳских структур оказались клетки ядра семяпочки, макроспора и зародышевый мешочек. По всей вероятности обсуждаемое в литературе поражение семян вирусом BYMV связано с переношениѳм вируса в кожуре семени