Journal
PLANT JOURNAL
Volume 62, Issue 6, Pages 1083-1092Publisher
WILEY
DOI: 10.1111/j.1365-313X.2010.04219.x
Keywords
functional genomics; GA insensitive; Vitis vinifera; grapevine; lethal locus
Categories
Funding
- CSIRO Plant Industry
- Grape and Wine Research and Development Cooperation (GWRDC)
- Montpellier SupAgro
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P>A grapevine model system is described that is suitable for rapid forward and reverse genetic studies in small controlled environments. It is based on the Vvgai1 mutant allele that confers a dwarf stature, short generation cycles and continuous flowering ('microvine'). Black and white berry microvine genotypes were developed that can be transformed by Agrobacterium tumefaciens. Near-homozygous lines were created for efficient bi-allelic single nucleotide polymorphism (SNP) marker mapping and mutagenesis studies. A genetic mapping strategy based on picovine-derived microvine progeny populations was used to rapidly phenotype and map the flower sex and fleshless berry loci and identify a new lethal recessive locus, Vvlrl1. The microvine provides a unique model system for rapid genetic studies of grapevine by changing the perennial long life cycle of the plant to one with features and advantages similar to an annual plant.
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