Nakasaki Kiyohiko, Saito Miyuki, Suzuki Nobuaki
Department of Materials Science and Chemical Engineering, Shizuoka University, Hamamatsu, Japan.
FEMS Microbiol Lett. 2007 Oct;275(2):286-91. doi: 10.1111/j.1574-6968.2007.00899.x. Epub 2007 Sep 11.
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.
分离出一种短小鬼伞菌株（命名为GM - 21），它是一种担子菌，能够抑制由立枯丝核菌白菜2号菌株引起的大白菜“小白菜”（芜菁）根腐病。发现其抑制植物病害的机制是菌丝干扰，即GM - 21菌株与病原菌之间的一种真菌对抗性相互作用。GM - 21菌株的抗真菌谱显示包括立枯丝核菌和镰刀菌属，也就是说，GM - 21菌株对立枯丝核菌引起的生菜根腐病和马斯卡林草立枯丝核菌病斑病具有病害抑制能力。此外，还证明了GM - 21菌株分别与导致番茄冠（根）腐病和根腐病以及甜瓜枯萎病的镰刀菌病原菌之间存在明显的菌丝干扰证据。因此，认为GM - 21对抑制土传病原菌有效，并且GM - 21为蔬菜病害的生物防治提供了新的可能性。
