Organic Acids in Grape Berry and Wine

Tartaric Acid Metabolism

Here is an interesting factoid about tartaric acid: Grapes, the baobab tree and the tamarind fruit are the only plants that contain tartaric acid.
Given that tartaric acid is found in nature in a limited number of instances, it would be interesting to know how it is synthesized.

In grape berries, tartaric acid is synthesized beginning at flowering and ending at véraison.
References:
1. The chemical structure of tartaric acid was drawn by the freely available drawing program from ACD Labs called ACD/ChemSketch Freeware.
2. Patrick McGovern, Ancient Wine: The Search for the Origins of Viniculture.
3. Carlos Conde, Paulo Silva, Natacha Fontes, Alberto C. P. Dias, Rui M. Tavares, Maria J. Sousa, Alice Agasse, Serge Delrot, Hernâni Gerós, Biochemical changes throughout Grape Berry development and fruit and wine quality, Food, 1(1), 1-22 ©2007 Global Science Books.