Leak, also known as water rot, causes spongy, wet internal rot of tubers. The diseased flesh is clearly demarcated from healthy tissue by a dark boundary line. In advanced infections, hollow cavities form and all that remains of some infected tubers are tuber shells with thin papery skins.
Presence among species
|Andean potato mottle virus||Aecidium|
|Pythium ultimum||Solanum tuberosum|