Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of rice blast (Magnaporthe oryzae) on rice (Oryza sativa) in Western Australia.

Abstract

In early August 2011, unusual leaf spot symptoms were observed by a local rice grower on rice cv. Quest sown in Western Australia, Australia. A leaf spot symptom initially appeared as grey-green and/or water soaked with a darker green border and then expanded rapidly to several cm in length and became light tan in colour with a distinct necrotic border. The causal organism was identified as Magnaporthe oryzae based on cultural, morphological, genetic and pathogenicity tests. This is thought to be the first report of M. oryzae in Western Australia.