OrangerV1, Main, Exploration, bibRecord, 002A14

Changes in the levels of polymethoxyflavones and flavanones as part of the defense mechanism of Citrus sinensis (Cv. valencia Late) fruits against Phytophthora citrophthora

Identifieur interne : 002A14 ( Main/Exploration ); précédent : 002A13; suivant : 002A15

Changes in the levels of polymethoxyflavones and flavanones as part of the defense mechanism of Citrus sinensis (Cv. valencia Late) fruits against Phytophthora citrophthora

Auteurs : J. A. Del Rio [Espagne] ; P. Gomez [Espagne] ; A. G. Baidez [Espagne] ; M. C. Arcas [Espagne] ; J. M. Botia [Espagne] ; A. Ortuno [Espagne]

Source :

Journal of agricultural and food chemistry : (Print) [ 0021-8561 ] ; 2004.

RBID : Pascal:04-0399185

Descripteurs français

Pascal (Inist)
- Mécanisme défense, Citrus sinensis, Fruit, Phytophthora citrophthora, Flavone, Flavonoïde, Relation hôte parasite, Flavanone.
Wicri :
- topic : Fruit.

English descriptors

KwdEn :
- Citrus sinensis, Citrus sinensis (chemistry), Defense mechanism, Flavanone, Flavanones (analysis), Flavones, Flavonoid, Flavonoids (analysis), Fruit, Fruit (chemistry), Fungicides, Industrial, Hesperidin (analysis), Host parasite relation, Phytophthora (drug effects), Phytophthora (metabolism), Phytophthora (ultrastructure), Phytophthora citrophthora, Plant Diseases (microbiology).
MESH :
- chemical , analysis : Flavanones, Flavonoids, Hesperidin.
- chemistry : Citrus sinensis, Fruit.
- drug effects : Phytophthora.
- metabolism : Phytophthora.
- microbiology : Plant Diseases.
- ultrastructure : Phytophthora.
- chemical : Fungicides, Industrial.

Abstract

Phytophthora citrophthora causes serious losses in Citrus fruits through brown rot lesion. The effect of infection with P. citrophthora on Citrus sinensis (cv. Valencia Late) fruits was studied, with particular reference to the levels of the flavanones hesperidin and isonaringin and the polymethoxyflavones sinensetin, nobiletin, tangeretin, and heptamethoxyflavone, because flavonoids are most probably involved as natural defense or resistance mechanisms in this genus. Changes in the levels of these flavonoids were detected after infection. The hesperidin and isonaringin contents fell by 13 and 67%, respectively, whereas the contents of their corresponding aglycons, hesperetin and naringenin, increased, suggesting the hydrolyzing effect of this fungus on the glycosylated flavanones. The heptamethoxyflavone, nobiletin, sinensetin, and tangeretin levels increased by 48, 28, 26, and 24%, respectively. The in vitro study revealed that these compounds acted as antifungal agents, the most active being the aglycons (naringenin and hesperetin), followed by the polymethoxyflavones and flavanone glycosides. The participation of these flavonoids in the defense mechanism of this Citrus species is discussed.

Affiliations:

Espagne

Le document en format XML

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<term>Flavanones (analysis)</term>
<term>Flavones</term>
<term>Flavonoid</term>
<term>Flavonoids (analysis)</term>
<term>Fruit</term>
<term>Fruit (chemistry)</term>
<term>Fungicides, Industrial</term>
<term>Hesperidin (analysis)</term>
<term>Host parasite relation</term>
<term>Phytophthora (drug effects)</term>
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<front><div type="abstract" xml:lang="en">Phytophthora citrophthora causes serious losses in Citrus fruits through brown rot lesion. The effect of infection with P. citrophthora on Citrus sinensis (cv. Valencia Late) fruits was studied, with particular reference to the levels of the flavanones hesperidin and isonaringin and the polymethoxyflavones sinensetin, nobiletin, tangeretin, and heptamethoxyflavone, because flavonoids are most probably involved as natural defense or resistance mechanisms in this genus. Changes in the levels of these flavonoids were detected after infection. The hesperidin and isonaringin contents fell by 13 and 67%, respectively, whereas the contents of their corresponding aglycons, hesperetin and naringenin, increased, suggesting the hydrolyzing effect of this fungus on the glycosylated flavanones. The heptamethoxyflavone, nobiletin, sinensetin, and tangeretin levels increased by 48, 28, 26, and 24%, respectively. The in vitro study revealed that these compounds acted as antifungal agents, the most active being the aglycons (naringenin and hesperetin), followed by the polymethoxyflavones and flavanone glycosides. The participation of these flavonoids in the defense mechanism of this Citrus species is discussed.</div>
</front>
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<tree><country name="Espagne"><noRegion><name sortKey="Del Rio, J A" sort="Del Rio, J A" uniqKey="Del Rio J" first="J. A." last="Del Rio">J. A. Del Rio</name>
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<name sortKey="Arcas, M C" sort="Arcas, M C" uniqKey="Arcas M" first="M. C." last="Arcas">M. C. Arcas</name>
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Changes in the levels of polymethoxyflavones and flavanones as part of the defense mechanism of Citrus sinensis (Cv. valencia Late) fruits against Phytophthora citrophthora

Changes in the levels of polymethoxyflavones and flavanones as part of the defense mechanism of Citrus sinensis (Cv. valencia Late) fruits against Phytophthora citrophthora

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

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