A broadly conserved fungal alcohol oxidase (AOX) facilitates fungal invasion of plants
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA874732 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR21299492_1.fastq.gz | Fastqsanger.gz | |||
| SRR21299492_2.fastq.gz | Fastqsanger.gz | |||
| SRR21299493_1.fastq.gz | Fastqsanger.gz | |||
| SRR21299493_2.fastq.gz | Fastqsanger.gz | |||
| SRR21299494_1.fastq.gz | Fastqsanger.gz |
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Project description:Alcohol oxidases are ecologically important enzymes which facilitate a number of plant-fungal interactions. Within Ascomycota they are primarily associated with methylotrophy, as a peroxisomal alcohol oxidase (AOX) catalyzing the conversion of methanol to formaldehyde in methylotrophic yeast. In this study we demonstrate that AOX orthologs are phylogenetically conserved proteins which are common in the genomes of non-methylotrophic, plant-associating fungi. Additionally, AOX orthologs are highly expressed during infection in a range of diverse pathosystems. To study the role of AOX in plant colonization, AOX knockout mutants were generated in the broad host range pathogen Sclerotinia sclerotiorum. Disease assays in soybean showed that these mutants had a significant virulence defect as evidenced by markedly reduced stem lesions and mortality rates. Chemical genomics suggest that SsAOX may function as an aromatic alcohol oxidase, and growth assays demonstrate that ΔSsAOX is incapable of properly utilizing plant extract as a nutrient source. Profiling of known aromatic alcohols point towards the monolignol coniferyl alcohol (CoA) as a possible substrate for SsAOX. As CoA and other monolignols are ubiquitous among land plants, the presence of highly conserved AOX orthologs throughout Ascomycota imply that this is a broadly conserved protein used by ascomycete fungi during plant colonization.
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Project description:Alcohol oxidases (AOXs) are ecologically important enzymes that facilitate a number of plant-fungal interactions. Within Ascomycota they are primarily associated with methylotrophy, as a peroxisomal AOX catalysing the conversion of methanol to formaldehyde in methylotrophic yeast. In this study we demonstrate that AOX orthologues are phylogenetically conserved proteins that are common in the genomes of nonmethylotrophic, plant-associating fungi. Additionally, AOX orthologues are highly expressed during infection in a range of diverse pathosystems. To study the role of AOX in plant colonization, AOX knockout mutants were generated in the broad host range pathogen Sclerotinia sclerotiorum. Disease assays in soybean showed that these mutants had a significant virulence defect as evidenced by markedly reduced stem lesions and mortality rates. Chemical genomics suggested that SsAOX may function as an aromatic AOX, and growth assays demonstrated that ΔSsAOX is incapable of properly utilizing plant extract as a nutrient source. Profiling of known aromatic alcohols pointed towards the monolignol coniferyl alcohol (CA) as a possible substrate for SsAOX. As CA and other monolignols are ubiquitous among land plants, the presence of highly conserved AOX orthologues throughout Ascomycota implies that this is a broadly conserved protein used by ascomycete fungi during plant colonization.
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