出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2010/06/07 01:17 UTC 版)
Blue mold is a downy mildew disease of tobacco that is caused by Peronospora tabacina, a fungus-like protist in the family Peronosporaceae. Blue mold can cause severe damage to susceptible tobacco plants in many parts of the world. Since it is an obligate parasite, it must have living tobacco tissue in order to grow.