Gene Details:
- Gene ID: GSVIVT00016536001
- Gene Symbol: VvNPR1.1
- Gene Name: Non-Expressor of PR genes 1
- Genome: Vitis vinifera PN40024.v4
- Species: Vitis vinifera
Functional Descriptions:
- Vitis vinifera VvNPR1.1 is the functional ortholog of AtNPR1 and its overexpression in grapevine triggers constitutive activation of PR genes and enhanced resistance to powdery mildew.
- Two transcriptional coactivators (VvNPR1.1 and VvNPR1.2) with similarity to Arabidopsis thaliana NPR1 (Non-Expressor of PR genes 1), a well-characterized and key signaling element of the salicylic acid (SA) pathway, were recently isolated in Vitis vinifera.
- Functional characterization of VvNPR1.1 and VvNPR1.2, including complementation of the Arabidopsis npr1 mutant, revealed that VvNPR1.1 is a functional ortholog of AtNPR1, whereas VvNPR1.2 likely has a different function.
- VvNPR1.1 but not VvNPR1.2 overexpression restores growth at a high SA concentration and SA-dependent expression of defense markers in the Arabidopsis npr1-2 mutant.
- Grapevine plants overexpressing VvNPR1.1-GFP exhibited an enhanced resistance to powdery mildew infection.
- Overexpression of VvNPR1 has thus the potential to enhance grapevine defensive capabilities upon fungal infection.
Function-related keywords:
- growth , resistance , defense , salicylic-acid , sa , powdery-mildew , mildew-resistance , mildew , powdery-mildew-resistance
Literature:
- Characterization of Vitis vinifera NPR1 homologs involved in the regulation of pathogenesis-related gene expression. DOI: 10.1186/1471-2229-9-54 ; PMID: 19432948
- Vitis vinifera VvNPR1.1 is the functional ortholog of AtNPR1 and its overexpression in grapevine triggers constitutive activation of PR genes and enhanced resistance to powdery mildew. DOI: 10.1007/s00425-011-1412-1 ; PMID: 21505863
Related News:
Gene Resources:
Orthologs:
Sequences:
cDNA Sequence
CDS Sequence
Protein Sequence