Coprinellus curtus (Hitoyo-take) prevents diseases of vegetables caused by pathogenic fungi.
A strain of Coprinellus curtus (designated GM-21), a basidiomycete that suppressed bottom-rot disease of Chinese cabbage, 'pak-choi' (Brassica campestris), caused by the pathogen Rhizoctonia solani Pak-choi 2 was isolated. The mechanism of plant disease suppression was discovered to be hyphal interference, a combative fungal interaction between strain GM-21 and the pathogen. The antifungal spectrum of strain GM-21 was shown to include R. solani and Fusarium sp., i.e. strain GM-21 showed disease-suppressive ability against bottom-rot disease of lettuce and Rhizoctonia-patch disease of mascarene grass caused by strains of R. solani. In addition, clear evidence of hyphal interference between strain GM-21 and Fusarium pathogens that cause crown (foot) and root-rot disease of tomato and Fusarium wilt of melon, respectively, was demonstrated. It was thus considered that GM-21 is effective for suppressing soil-borne pathogens, and that GM-21 presents new possibilities for biological control of vegetable diseases.
Nakasaki
Kiyohiko
K
Department of Materials Science and Chemical Engineering, Shizuoka University, Hamamatsu, Japan. tcknaka@ipc.shizuoka.ac.jp
Saito
Miyuki
M
Suzuki
Nobuaki
N
D000363:Agaricales / Q000254:growth & development*; D001937:Brassica / Q000382:microbiology; D019662:Cucurbitaceae / Q000382:microbiology; D005670:Fusarium / Q000254:growth & development / Q000472:pathogenicity*; D010572:Pest Control, Biological; D010935:Plant Diseases / Q000382:microbiology*; D012232:Rhizoctonia / Q000254:growth & development / Q000472:pathogenicity*; D014675:Vegetables / Q000382:microbiology*