A pathogenic bacterium (CCF00024) was isolated from the kidney and liver of the diseased fish with acute epidemic disease. Artificial infection proved that the bacterium was the pathogen of the disease.
Strain CBZHG4, isolated from the liver of diseased Colossoma brachypomum , was determined as the fish pathogen. Following intraperitoneal injection of n (cell) 10 5～10 6 mL -1 , fish developed clinical disease, with 100% mortalities within 48 h.
Siniperca chuatsi virus(SCV) is the major pathogen of infectious disease broken out in cultured Mandarin fish (Siniperca chuatsi) since 1994 in Guangdong Province,and its genome belongs to double-stranded DNA.
The sensitivity of the pathogen to ether and treatment at 56℃ for 30min and the filterability for 0.45μm but not for 0.22μm filter membranes verified the structure and size of HHNBV observed on the electron microscopy.
Seven strains were isolated from Pseudosciaena crocea suffering from the skin-ulcer disease cultivated in Xiangshan Area of Zhejiang Province. Strain ZXS01,ZXS02 and ZXS07 were confirmed to be the pathogen of the disease by artificial infection test.
Changes in trypsin inhibitor activity, lectin activity, and the content of endogenous salicylic acid after administration of exogenous salicylic acid or a pathogen were shown to depend on the resistance of maize strains to Fusarium.
A change in the activity of lectins may be a nonspecific response of plants to infection with the pathogen.
Infection of tubers with a compatible race of the pathogen or treatment with a suppressor (laminarin) decreased both the degree of hydrolysis of conjugated forms of salicylic acid and the accumulation of its free form.
An increase in the soil pool of Trichoderma harzianum as a result of application of a biological preparation based on this antagonistic fungus correlated with its effectiveness against the soil pathogen Fusarium sp., which causes root rot.
Interaction of proteinases secreted by the fungal plant pathogen Rhizoctonia solani with natural proteinase inhibitors produced