Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of dry rot disease of yam caused by Scutellonema bradys in East Africa.

Abstract

Locally cultivated yam tubers, exhibiting typical symptoms of dry rot, were collected in 2014 in Kenya and Tanzania. Flaky tuber surfaces revealed brown necrotic patches when scraped back with a knife. The causal organism was identified as Scutellonema bradys based on molecular and pathogenicity analyses. This is thought to be the first record of S. bradys occurring in East Africa, which constitutes a potential threat for the cultivation of yam in the region.