Ascospore Release of <i>Togninia minima</i>, Cause of Esca and Grapevine Decline in California

Fig. 2. A Thompson Seedless grape bunch showing typical spotting and "measles" symptoms on the berries.



Image from Plant Health Progress article:
Ascospore Release of Togninia minima, Cause of Esca and Grapevine Decline in California