A single gene in Fusarium oxysporum limits host range.
Fusarium oxysoporum f. sp. radicis-cucumerinum
Fusarium oxysporum f. sp. melonis
cucurbits
effector-triggered immunity (ETI)
host range
Journal
Molecular plant pathology
ISSN: 1364-3703
Titre abrégé: Mol Plant Pathol
Pays: England
ID NLM: 100954969
Informations de publication
Date de publication:
01 2021
01 2021
Historique:
received:
16
03
2020
revised:
24
07
2020
accepted:
22
09
2020
pubmed:
5
11
2020
medline:
13
7
2021
entrez:
4
11
2020
Statut:
ppublish
Résumé
Fusarium oxysoporum f. sp. radicis-cucumerinum (Forc) is able to cause disease in cucumber, melon, and watermelon, while F. oxysporum f. sp. melonis (Fom) can only infect melon plants. Earlier research showed that mobile chromosomes in Forc and Fom determine the difference in host range between Forc and Fom. By closely comparing these pathogenicity chromosomes combined with RNA-sequencing data, we selected 11 candidate genes that we tested for involvement in the difference in host range between Forc and Fom. One of these candidates is a putative effector gene on the Fom pathogenicity chromosome that has nonidentical homologs on the Forc pathogenicity chromosome. Four independent Forc transformants with this gene from Fom showed strongly reduced or no pathogenicity towards cucumber, while retaining pathogenicity towards melon and watermelon. This suggests that the protein encoded by this gene is recognized by an immune receptor in cucumber plants. This is the first time that a single gene has been demonstrated to determine a difference in host specificity between formae speciales of F. oxysporum.
Identifiants
pubmed: 33146465
doi: 10.1111/mpp.13011
pmc: PMC7749751
doi:
Substances chimiques
Fungal Proteins
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
108-116Informations de copyright
© 2020 The Authors. Molecular Plant Pathology published by British Society for Plant Pathology and John Wiley & Sons Ltd.
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