Involvement of phenolic compounds and their composition in the defense response of Fusarium oxysporum infected berangan banana plants
Fusarium wilt is one of the most common destructive banana diseases which causes great losses to the global banana production. Berangan banana, known to be very susceptible towards this disease is greatly affected. Upon infection, oxidative burst involving rapid accumulation of reactive oxygen s...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2021
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| Online Access: | http://journalarticle.ukm.my/16388/ http://journalarticle.ukm.my/16388/1/3.pdf |
| Summary: | Fusarium wilt is one of the most common destructive banana diseases which causes great losses to the global
banana production. Berangan banana, known to be very susceptible towards this disease is greatly affected. Upon
infection, oxidative burst involving rapid accumulation of reactive oxygen species is one of the first responses of a
plant defense against biotic and abiotic stress. Secondary metabolites play an essential role in scavenging these toxic
reactive radicals. In this study, a number of phenolic compounds and flavonoids were identified and the changes were
documented. Compounds such as quinic acid, ferulic acid, caffeoyl glucose, p-coumaric acid, syringic acid, sinapic
acid, aconitic acid, caffeic acid, p-hydroxybenzoic acid, ascorbic acid, kaempferol-rhamnose-hexose, quercetin,
catechin, rutin, and isorhamnetin 3-O rutinoside increased after fungal infection. Concomitantly, DPPH radical
scavenging activity, reducing power, total antioxidant activity, total flavonoid content and total polyphenol content also
increased. Polyphenols, flavonoid content and antioxidant activities increased significantly on day 1 and continued
to increase until day 6 before gradually declining. The phenolic and flavonoid profiles were analysed using liquid
chromatography - mass spectroscopy (LCMS). The antioxidant properties were found to be closely related to plant
defense system. |
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