Effect of Fusariosis on the Metabolism of Phenolics Compounds of Date Palm Leaflets, Resistant and Sensitive to the Disease  

作　　者：Saida Ouafi Nicole Bounaga 

机构地区：[1]Research Laboratory on Arid Zones （L.R.ZA）, Faculty of Biology （USTHB）, Bab Ezzouar, Algiers 16111, Algeria

出　　处：《Journal of Food Science and Engineering》2012年第4期213-217,共5页食品科学与工程（英文版）（美国）

摘　　要：Because of socio-economic importance of date palm in North Africa, the scientific community has always followed the progression of parasitic disease that affects it. The study was performed on population of thirty palm trees belonging to three cultivars of the oases of south-west Algeria TOUAT Gourara. The analytical protocol consists of a hot hydrochloric acid hydrolysis of I g of leaf material dried and ground. Structural analysis of compounds present in extracts was conducted by chromatographic and spectrophotometric techniques. Through the analysis of all HPLC profiles of phenolic acids, we have established three chemotypes： resistant with the highest heights, sensitive, with the lowest height, finally low sensitivity or tolerant with intermediate heights. The increased synthesis of C-glycoflavones, within diseased palms, can be seen as the first sign of plant response to fungal attack, or even as a defense mechanism so these flavonoids correspond to ＂pre-inhibitines＂. It has not been found qualitative differences between different cultivars studied. The merits of our work show a negative correlation between flavonoid content and the level of lignification in the date palm, suggests that the process of lignification is more rapid in resistant cultivars. We can say that there is a constitutive resistance.

关 键 词：Date palm tree fusariose CHEMOTYPE RESISTANT phenolic compounds. 

分 类 号：S792.91[农业科学—林木遗传育种] TU991.21[农业科学—林学]