Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

The first report of Dendrobium devonianum Paxt. caused by Coleosporium paederiae in China.

Abstract

In order to research Dendrobium devonianum rust, the disease investigation, collecting specimen and pathogenic identification were carry out in field and laboratory in late October 2013 and in late August 2014, Longling county, Baoshan, Yunnan province. The result were showed that the D. devonianum rust was caused by Coleosporium paederiae, it only distributed in the Yunnan, and its alternate hosts was unknown at present. Stage of urediospores of the rust directly infect the new leaves of D. devonianum with the incubation period of 2-3 weeks, it occurred from March to November every year. Its telia and hyphae overwintered in the disease tissue, and they were the initial infection sources of next year. C. paederiae can result in disease prevalent with the condition of over 25°C and 80% relative humanity. This is a new disease on D. devonianum with first report in China.