Biochemical changes occurred in roots of bur marigold and grapevine infected with Longidorus africanus. Phenols of infected root tips differed quantitatively from those of healthy root tips (optical density of 0.68 and 0.32, respectively). Column chromatography of the phenol extracts resulted in more fractions in the infected than in the healthy root extract. Of the enzymes involved in phenol m...

Grape plants (Vitis vinifera L.), like other major horticultural crops, suffer from attacks by plant pathogenic nematodes. These parasites are a serious burden for viticulturists all over the world and lead to reduced vine vigour crop yield. The nematode infesting grapevines include Meloidogyne spp., Pratylenchus Criconemella Tylenchulus Helicotylenchus Heterodera spp. etc. Besides these genera...