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| Content Provider | African Journals Online (AJOL) |
|---|---|
| Author | Dibi Balé Françoise Gogbe Denézon Odette Dogbo Jean Noel Konan Eugène Pacôme Konan Sékou Diabate Boaké Kone |
| Abstract | En Afrique, la culture du palmier à huile est menacée par la fusariose causée par Fusarium oxysporum f. sp. elaeidis (F.o.e). Chez cette plante, l’activité antifongique des phytoalexines a été démontrée dans la lutte contre ce champignon au cours des premières semaines après inoculation. L’objectif de cette étude est de sélectionner des clones de palmier à huile résistants à F.o.e. sur la base de leur synthèse phénolique. Pour ce faire, les racines blessées des plantules ont été inoculées par F.o.e et les non inoculés ont servi de témoin. Les racines ont été prélevées à différents temps. Les extraits racinaires des plantules ont été dosés par le réactif Folin Ciocalteu pour quantifier les phénols totaux des plants inoculés (IT) et non inoculés (NI). Les résultats ont montré que les clones résistants ont réagi à l’infection dès le premier jour après inoculation. Par contre, les clones sensibles ont réagi le cinquième jour. Au huitième jour, la quantité de phénols baisse considérablement chez les clones sensibles et augmente ou se stabilise chez les clones résistants. Ce résultat pourrait servir pour la sélection des clones résistants à F.o.e avant la mise au point des marqueurs phénoliques de tolérance du palmier à huile à ce pathogène.© 2016 International Formulae Group. All rights reserved.Mots clés: Clone, sensible, résistant, Fusarium oxysporum f. sp. elaeidis, Palmier à huile, phénolsEnglish Title: Phenolic reaction of four clones of oil palm inoculated by Fusarium oxysporum f. sp. elaeidisEnglish AbstractIn Africa, the cultivation of oil palm is threatened by Fusarium oxysporum f. sp. elaeidis which is responsible of the fusarium. The antifungal activity of phytoalexins was demonstrated in the fight against this fungus in the first weeks after inoculation of the oil palm plant. However, the phenolic behavior of sensitive and tolerant clones over time remains unclear. The objective of this study is to select resistant oil palm clones F.o.e. on the basis of their phenolic synthesis. In order to achieve this aim, the roots of the oil palm plants were injured and inoculated with F.o.e. The uninoculated oil palm plants were used as the control. The roots were collected at different times. The root extracts of the oil palm plants were measured using the Folin Ciocalteu reagent in order to quantify the total phenols present in both the inoculated (IT) and the non-inoculated (NI) plants. The results showed that the tolerant clones reacted to infection from the first day after inoculation. On the other hand, the sensitive clones reacted the fifth day. On the eighth day, the amount of phenols was found to be significantly lower in the susceptible clones. In contrast, the amount of phenols was found to be higher or stable in the resistant clones. This result could be used to select the resistant clones to F.o.e before the development of phenolic markers for oil palm plant infections.© 2016 International Formulae Group. All rights reserved. |
| Ending Page | 496 |
| Starting Page | 486 |
| File Format | |
| ISSN | 19918631 |
| e-ISSN | 1997342X |
| DOI | 10.4314/ijbcs.v10i2.3 |
| Journal | International Journal of Biological and Chemical Sciences |
| Issue Number | 2 |
| Volume Number | 10 |
| Language | English French |
| Publisher Date | 2016-09-12 |
| Access Restriction | Open |
| Subject Keyword | Biology Life Sciences Chemistry Mathematics Physics General Science Clone sensible résistant Fusarium oxysporum f. sp. elaeidis Palmier à huile phénols susceptible resistant oil palm phenols |
| Content Type | Text |
| Resource Type | Article |
| Subject | Decision Sciences Chemistry Biotechnology Molecular Biology |
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