African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6709

Full Length Research Paper

Spatiotemporal evolution and identification of oil palm phenolic compounds in response to vascular wilt caused by Fusarium oxysporum f.sp. elaeidis in Côte d'Ivoire

Françoise Balé GOGBE-DIBI
  • Françoise Balé GOGBE-DIBI
  • Cocoa Program, Coconut Program, Oil Palm Program, Crop Defense, National Center for Agronomic Research, Abidjan, Côte d’Ivoire.
  • Google Scholar
Engueran Konan DJAHA
  • Engueran Konan DJAHA
  • Cocoa Program, Coconut Program, Oil Palm Program, Crop Defense, National Center for Agronomic Research, Abidjan, Côte d’Ivoire.
  • Google Scholar
Diabate SEKOU
  • Diabate SEKOU
  • Cocoa Program, Coconut Program, Oil Palm Program, Crop Defense, National Center for Agronomic Research, Abidjan, Côte d’Ivoire.
  • Google Scholar
Klotioloma COULIBALY
  • Klotioloma COULIBALY
  • Cocoa Program, Coconut Program, Oil Palm Program, Crop Defense, National Center for Agronomic Research, Abidjan, Côte d’Ivoire.
  • Google Scholar
Bertin Koffi YAO
  • Bertin Koffi YAO
  • Laboratoire de Biologie et Amélioration des Productions Végétales, UFR Sciences de la Nature, Université Nangui Abrogoua, 02 BP 801 Abidjan 02, Côte d?Ivoire.
  • Google Scholar
Pierre Walet N’GUESSAN
  • Pierre Walet N’GUESSAN
  • Cocoa Program, Coconut Program, Oil Palm Program, Crop Defense, National Center for Agronomic Research, Abidjan, Côte d’Ivoire.
  • Google Scholar
Norbert N’Dri KOUAME
  • Norbert N’Dri KOUAME
  • Cocoa Program, Coconut Program, Oil Palm Program, Crop Defense, National Center for Agronomic Research, Abidjan, Côte d’Ivoire.
  • Google Scholar
Odette Denezon DOGBO
  • Odette Denezon DOGBO
  • Laboratoire de Biologie et Amélioration des Productions Végétales, UFR Sciences de la Nature, Université Nangui Abrogoua, 02 BP 801 Abidjan 02, Côte d?Ivoire.
  • Google Scholar


  •  Received: 23 April 2022
  •  Accepted: 03 August 2022
  •  Published: 31 October 2022

Abstract

Fusarium oxysporum f.sp. elaeidis (Foe) is a fungus that attacks oil palm and affects its production. This study aimed at characterizing phenolic compounds and evaluating their spatiotemporal evolution in two cultivars (sensitive and tolerant to fusariosis). For this, total phenols were quantified during the latency period [0 to 28 Days After Inoculation (DAI)] of Foe. Thereafter, phenolic extracts from plant organs (roots and pseudobulbs) were used for in vitro inhibition tests of Foe spore germination. Lastly, Gas Chromatography coupled to Mass Spectrophotometry (GC-MS) was used to detect polyphenols. These results revealed that phenolic reaction in roots was earlier (1st DAI or T0) in the tolerant cultivar than in the sensitive (8th DAI). However, it occurred simultaneously in the pseudobulbs (3rd DAI) in both cultivars. Spore Germination Inhibition Rate (SGIR) of Foe reached 100% in the tolerant cultivarb against the sensitive cultivar in which a maximum rate of 49, 64% was recorded. GC-MS revealed that in roots, para-hydroxybenzoic acid is a phytoanticipin while meta-hydroxybenzoic acid is a phytoalexin. However, in pseudobulbs, these two polyphenols are phytoalexins. These results will allow exploring the biosynthetic pathway of phenolic acids in order to improve the phenolic response of disease-sensitive but productive hybrids.

Key words: Fusarium oxysporum f.sp. elaeidis, inhibition, polyphenols, GC-MS, meta-hydroxybenzoic acid, para-hydroxybenzoic acid.