Salicylic acid fights against Fusarium wilt by inhibiting target of rapamycin signaling pathway in Fusarium oxysporum.
Fusarium oxysporum
Hyphal growth
Pathogenicity
Salicylic acid
Target of rapamycin
Journal
Journal of advanced research
ISSN: 2090-1224
Titre abrégé: J Adv Res
Pays: Egypt
ID NLM: 101546952
Informations de publication
Date de publication:
07 2022
07 2022
Historique:
received:
06
07
2021
revised:
11
10
2021
accepted:
28
10
2021
entrez:
1
7
2022
pubmed:
2
7
2022
medline:
8
7
2022
Statut:
ppublish
Résumé
Biofungicides with low toxicity and high efficiency are a global priority for sustainable agricultural development. Phytohormone salicylic acid (SA) is an ancient medicine against various diseases in humans and activates the immune system in plants, but little is known of its function as a biofungicide. Here, Fusarium oxysporum, the causal agent of devastating Fusarium wilt and immunodepressed patients, was used as a model system to explore whether SA can enter the pathogen cells and suppress key targets of the pathogen. Oxford Nanopore MinION sequencing and high-throughput chromosome conformation capture (Hi-C) sequencing were used to analyzed the genome of F. oxysporum. In addition, RNA-seq, qRT-PCR, and western blotting were conducted to detect gene and protein expression levels. We isolated and sequenced the genome of F. oxysporum from potato dry rot, and the F. oxysporum included 12 chromosomes and 52.3 Mb genomic length. Pharmacological assays showed that exogenous application of SA can efficiently arrest hyphal growth, spore production, and pathogenicity of F. oxysporum, whereas endogenous salicylate hydroxylases significantly detoxify SA. The synergistic growth inhibition of F. oxysporum was observed when SA was combined with rapamycin. Kinase assays showed that SA inhibits FoTOR complex 1 (FoTORC1) by activating FoSNF1 in vivo. Transgenic potato plants with the interference of FoTOR1 and FoSAH1 genes inhibited the invasive growth of hyphae and significantly prevented the occurrence of Fusarium wilt. This study revealed the underlying mechanisms of SA against F. oxysporum and provided insights into SA in controlling various fungal diseases by targeting the SNF1-TORC1 pathway of pathogens.
Identifiants
pubmed: 35777900
pii: S2090-1232(21)00210-1
doi: 10.1016/j.jare.2021.10.014
pmc: PMC9263656
pii:
doi:
Substances chimiques
Salicylic Acid
O414PZ4LPZ
Sirolimus
W36ZG6FT64
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1-13Informations de copyright
Copyright © 2022. Production and hosting by Elsevier B.V.
Déclaration de conflit d'intérêts
Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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