The ilv2 gene, encoding acetolactate synthase for branched chain amino acid biosynthesis, is required for plant pathogenicity by Leptosphaeria maculans.
Acetolactate Synthase
/ genetics
Plant Diseases
/ microbiology
Herbicides
/ pharmacology
Amino Acids, Branched-Chain
/ biosynthesis
Leptosphaeria
/ genetics
Mutation
/ genetics
Fungal Proteins
/ genetics
Gene Editing
/ methods
Plant Leaves
/ microbiology
CRISPR-Cas Systems
/ genetics
Brassica
/ microbiology
Ascomycota
/ pathogenicity
Brassica napus
Acetohydroxyacid synthase
Chemical control
Pathogenicity
Phytopathogen
Journal
Molecular biology reports
ISSN: 1573-4978
Titre abrégé: Mol Biol Rep
Pays: Netherlands
ID NLM: 0403234
Informations de publication
Date de publication:
25 May 2024
25 May 2024
Historique:
received:
08
02
2024
accepted:
07
05
2024
medline:
26
5
2024
pubmed:
26
5
2024
entrez:
25
5
2024
Statut:
epublish
Résumé
Control of blackleg disease of canola caused by the fungus Leptosphaeria maculans relies on strategies such as the inhibition of growth with fungicides. However, other chemicals are used during canola cultivation, including fertilizers and herbicides. There is widespread use of herbicides that target the acetolactate synthase (ALS) enzyme involved in branched chain amino acid synthesis and low levels of these amino acids within leaves of Brassica species. In L. maculans the ilv2 gene encodes ALS and thus ALS-inhibiting herbicides may inadvertently impact the fungus. Here, the impact of a commercial herbicide targeting ALS and mutation of the homologous ilv2 gene in L. maculans was explored. Exposure to herbicide had limited impact on growth in vitro but reduced lesion sizes in plant disease experiments. Furthermore, the mutation of the ilv2 gene via CRISPR-Cas9 gene editing rendered the fungus non-pathogenic. Herbicide applications can influence disease outcome, but likely to a minor extent.
Sections du résumé
BACKGROUND
BACKGROUND
Control of blackleg disease of canola caused by the fungus Leptosphaeria maculans relies on strategies such as the inhibition of growth with fungicides. However, other chemicals are used during canola cultivation, including fertilizers and herbicides. There is widespread use of herbicides that target the acetolactate synthase (ALS) enzyme involved in branched chain amino acid synthesis and low levels of these amino acids within leaves of Brassica species. In L. maculans the ilv2 gene encodes ALS and thus ALS-inhibiting herbicides may inadvertently impact the fungus.
METHODS AND RESULTS
RESULTS
Here, the impact of a commercial herbicide targeting ALS and mutation of the homologous ilv2 gene in L. maculans was explored. Exposure to herbicide had limited impact on growth in vitro but reduced lesion sizes in plant disease experiments. Furthermore, the mutation of the ilv2 gene via CRISPR-Cas9 gene editing rendered the fungus non-pathogenic.
CONCLUSION
CONCLUSIONS
Herbicide applications can influence disease outcome, but likely to a minor extent.
Identifiants
pubmed: 38796647
doi: 10.1007/s11033-024-09620-4
pii: 10.1007/s11033-024-09620-4
doi:
Substances chimiques
Acetolactate Synthase
EC 2.2.1.6
Herbicides
0
Amino Acids, Branched-Chain
0
Fungal Proteins
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
682Informations de copyright
© 2024. The Author(s).
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