Clonal Genomics | Project Goals

Grapevine cultivars (Vitis vinifera ssp. L.) are selected superior genotypes of ancient origin. Each cultivar expresses distinct phenotypes, resulting in sets of morphologically and genetically different clones. These clones have spread worldwide adjusting to different environments and cultivation techniques. The causes for clonal variation within woody perennials mainly rely on mutations.

Our research focuses on the rates, distribution and function of these mutations employing the molecular genetic techniques and asseys. Pinot noir is used as a model system since it occurs in a series of well-documented clonal phenotypes suitable for genomic studies.

Our work on the clonal variation in grapevine has been started together with Prof. R. Blaich in my former group "Biotechnology in Viticulture" at the University of Hohenheim, Germany. There we focused on the screening and proving of random genetic variation among Pinot noir clones. At Vienna, we take the challenge to focus our research in understanding the origin and functioning of clonal variation. Why does clonal variation occur in certain grapevine varieties more than in others? What impacts the molecular basis of these variations? Can sequence variations be employed for Grapevine breeding?

Current research projects:

• Clonal variation induced through Transposable Elements
• Tracing history through genetic variation in Riesling clones
• Genetic marker identification for "loose cluster" traits in Grapevine    
• Molecular Analyses of Grapevine (Vitis spp. L. ) and Phylloxera (Daktulosphaira vitifoliae Fitch) Interaction