חיפוש מתקדם
Journal of Nematology

Cornelia Stender

Hydroxyurea (HU) at concentrations of 10 or 20 mg/liter was included in a medium on which excised tomato roots infected with the root-knot nematode Meloidogyne javanica were grown. In the HU, treated roots, giant cells were small and contained large vacuoles. Giant cell nuclei were amoeboidal with relatively small nucleoli in treated roots, compared with giant cells of nontreated galls. In treated-root giant cells, the cytoplasm was diffuse and few organelles such as mitochondria, dictyosomes, and endoplasmic reticulum were detected; also, walls of giant cells were thin with less extensive ingrowths than in nontreated roots. We conclude that HU suppressed normal giant cell formation interfering with its function as a feeding cell.

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Effects of Hydroxyurea on the Ultrastructure of Giant Cells in Galls Induced by Meloidogyne javanica
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Cornelia Stender

Effects of Hydroxyurea on the Ultrastructure of Giant Cells in Galls Induced by Meloidogyne javanica

Hydroxyurea (HU) at concentrations of 10 or 20 mg/liter was included in a medium on which excised tomato roots infected with the root-knot nematode Meloidogyne javanica were grown. In the HU, treated roots, giant cells were small and contained large vacuoles. Giant cell nuclei were amoeboidal with relatively small nucleoli in treated roots, compared with giant cells of nontreated galls. In treated-root giant cells, the cytoplasm was diffuse and few organelles such as mitochondria, dictyosomes, and endoplasmic reticulum were detected; also, walls of giant cells were thin with less extensive ingrowths than in nontreated roots. We conclude that HU suppressed normal giant cell formation interfering with its function as a feeding cell.

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