Within and between plant variation of 4β-hydroxiwithanolide E in cape gooseberry (Physalis peruviana; Solanaceae)

► Withanolide concentration is higher in leaves than in roots in seedlings. ► Withanolide concentration is higher in roots than in leaves in adult plants. ► Calyxes had a higher withanolide concentration than fruits. ► There was no change in withanolide concentration after simulated herbivory. ► Withanolide concentration is variable within plants and during plant development.