Combined metabolome and transcriptome analysis reveal the mechanism of eugenol inhibition of Aspergillus carbonarius growth in table grapes (Vitis vinifera L.)

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During storage, Aspergillus carbonarius (A. carbonarius) can easily infect grape berries, resulting in a pronounced decline in nutritional value and substantial economic loss for the grape industry. Characterised by broad-spectrum antibacterial activity, eugenol is proven to significantly inhibit A. carbonarius and ochratoxin A (OTA) in vitro. In this study, the potential mechanism of eugenol against A. carbonarius in grapes ('Kyoho') was evaluated using integrative transcriptomic and metabolomics analyses. After eugenol treatment at 50 mM, the inhibition of OTA was reduced by 100%, despite a 56.2% inhibition of A. carbonarius. In the meantime, mycelial growth was completely inhibited by 100 mM eugenol in grape berries. The application of eugenol to grapes stimulated the activity of several enzymes involved in disease resistance, namely catalase (CAT), peroxidase (POD), superoxide dismutase (SOD), chitinase (CHI), β-1,3-glucanase (GLU), cinnamate-4-hydroxylase (C4H), phenylalanine ammonia-lyase (PAL), 4-coumarate-CoA ligase (4CL) and glutathione (GSH) content. In addition, the contents of abscisic acid (ABA), jasmonic acid (JA) and salicylic acid (SA) in eugenol-treated grapes were higher after A. carbonarius inoculation. Combined transcriptomic and metabolomic analysis revealed that in phenylpropane biosynthesis, there were a variety of differentially expressed metabolites (DEMs) and differentially expressed genes (DEGs), and the plant hormone signalling pathway changed significantly. Among these, the levels of 47 polyphenol metabolites significantly increased in eugenol-treated grape berries compared to noneugenol-treated berries. Meanwhile, we investigated the transcript levels of 39 genes in 6 phytohormones signalling in response to eugenol-treated grape berries followed by A. carbonarius inoculation. These results suggest that eugenol positively improved the disease resistance of grapes and might be potentially beneficial for the prevention and treatment of A. carbonarius-caused disease.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:170

Enthalten in:

Food research international (Ottawa, Ont.) - 170(2023) vom: 14. Aug., Seite 112934

Sprache:

Englisch

Beteiligte Personen:

Jiang, Nan [VerfasserIn]
Wang, Liuqing [VerfasserIn]
Jiang, Dongmei [VerfasserIn]
Wang, Meng [VerfasserIn]
Yu, Hang [VerfasserIn]
Yao, Weirong [VerfasserIn]

Links:

Volltext

Themen:

3T8H1794QW
Aspergillus carbonarius
Disease resistance
Eugenol
Journal Article
Metabolome
Research Support, Non-U.S. Gov't
Transcriptome

Anmerkungen:

Date Completed 16.06.2023

Date Revised 18.06.2023

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.foodres.2023.112934

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM358176328