伞房决明白粉病的初次报道(英文)

First report of powdery mildew caused by Oidium cassiae-siameae on Cassia corymbosa

伞房决明是长江三角洲地区的园林绿化木本植物,在每年8月下旬至11月中旬会发生严重的白粉病,造成提前落叶,导致次年部分植株死亡。该病由Oidium cassiae-siameae引起。经过3年多的野外观察,未发现有性世代。初次报道伞房决明为Oidium cassiae-siameae白粉菌的新寄主。此真菌为中国大陆的初次记载。

Cassia corymbosa is an introduced ornamental shrub in the Yangtze River Delta area.Severe powdery mildew occurred on C.corymbosa from late August to mid-November.It caused early defoliation and some infected plants failed to survive in the following year.The powdery mildew is caused by Oidium cassiae-siameae.The pathogen did not develop teleomorph under field observation in the last three years.This is the first report of C.corymbosa,as a new host of powdery mildew caused by Oidium cassiae-siameae.This fungus is a newly reported species in China's Mainland.