Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Jatropha curcas - a new host for Sclerotium rolfsii.

Abstract

In a nursery, some seedlings of J. curcas were showing complete wilting. When such infected seedlings were uprooted, they were covered with mycelial growth at the basal portion. In some cases, sclerotial bodies were observed on rotting seeds or seedlings. The pathogen was isolated and identified as S. rolfsii based on morphological characters. When seeds were sown on sick soil for proving pathogenicity, some seeds failed to germinate and showed rotting. In some cases, seeds germinated after 40 days. However, such seedlings showed discoloration and wilted completely within 4 days. This is thought to be the first report of seed and seedling rot of J. curcas caused by S. rolfsii.