About the Authors

Jaco Franken

Affiliation Institute for Wine Biotechnology, Stellenbosch University, Stellenbosch, Western Cape, South Africa

Bianca A. Brandt

Affiliation Institute for Wine Biotechnology, Stellenbosch University, Stellenbosch, Western Cape, South Africa

Siew L. Tai

Affiliation Institute for Wine Biotechnology, Stellenbosch University, Stellenbosch, Western Cape, South Africa

Florian F. Bauer

fb2@sun.ac.za

Affiliation Institute for Wine Biotechnology, Stellenbosch University, Stellenbosch, Western Cape, South Africa

Competing Interests

It is acknowledged that the work presented in the paper did receive funding from the industry associated funding body, Winetech. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: JF BB SLT FFB. Performed the experiments: JF BB SLT. Analyzed the data: JF BB SLT. Contributed reagents/materials/analysis tools: JF BB SLT FFB. Wrote the manuscript: JF BB SLT FFB.