Dysfunctionality of the Xylem in Olea europaea L. Plants Associated with the Infection Process by Verticillium dahliae Kleb. Role of Phenolic Compounds in Plant Defense Mechanism
- 30 March 2007
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of Agricultural and Food Chemistry
- Vol. 55 (9), 3373-3377
- https://doi.org/10.1021/jf063166d
Abstract
Xylem ultrastructural modification and the possible participation of phenolic compounds in the natural defense or resistance mechanisms of olive plants infected with Verticillium dahliae Kleb. were studied. Microscopic study showed that the mycelium propagated and passed from one element to another through the pit. The formation of tyloses and aggregates contributed to obstruction of the xylem lumen. In vivo changes in the levels of these phenolic compounds in infected olive plants and their antifungal activity against Verticillium dahliae Kleb., as revealed by in vitro study, strongly suggest that they are involved in natural defense or resistance mechanisms in this plant material, the most active being quercetin and luteolin aglycons, followed by rutin, oleuropein, luteolin-7-glucoside, tyrosol, p-coumaric acid, and catechin. .This publication has 16 references indexed in Scilit:
- Citrus paradisi and Citrus sinensis flavonoids: Their influence in the defence mechanism against Penicillium digitatumFood Chemistry, 2006
- Enhancement of phenolic compounds in olive plants (Olea europaea L.) and their influence on resistance against Phytophthora sp.Food Chemistry, 2003
- Epidemiology of Verticillium dahliae on olive (cv. Picual) and its effect on yield under saline conditionsPlant Pathology, 2003
- Increasing Resistance against Phytophthora citrophthora in Tangelo Nova Fruits by Modulating Polymethoxyflavones LevelsJournal of Agricultural and Food Chemistry, 2002
- Effects of tebuconazole on morphology, structure, cell wall components and trichothecene production of Fusarium culmorum in vitroPest Management Science, 2001
- Modulation of the Biosynthesis of Some Phenolic Compounds in Olea europaea L. Fruits: Their Influence on Olive Oil QualityJournal of Agricultural and Food Chemistry, 2000
- Antioxidant activity of phenolics extracted from Olea europaea L. leavesFood Chemistry, 2000
- Naringin and Neohesperidin Levels during Development of Leaves, Flower Buds, and Fruits of Citrus aurantiumPlant Physiology, 1992
- Studies on the Antimicrobial Activity of Olive Phenolic CompoundsJournal of Applied Bacteriology, 1970
- Nobiletin Is Main Fungistat in Tangerines Resistant to Mal SeccoScience, 1967