Chemotaxis response of Fusarium solani and Cylindrocarpon destructans on total ginsenoside / 中草药

ABSTRACT

Objective: To study the chemotaxis response of Fusarium solani and Cylindrocarpon destructans on total ginsenosides. Methods: Three chemotactic parameters (concentration, temperature, and pH) were determined by plate assay and spore germination method to research the chemotaxis response of two pathogens and their spores. Results: It showed that F. solani had strong chemotactic response at the low concentration of total ginsenosides, and the data of chemotactic mobile index (CMI) was 1.2948, SGR was 66%, chemotaxis growth rate (CGR) was 0.533, and (mycelial growth) MG was 0.5220 mg/mL. However, C. destructans had strong chemotactic response at the middle concentration of total ginsenosides, and the data of CMI was 1.2556, SGR was 63%, CGR was 0.465, and MG was 0.449 4 mg/mL. Conclusion: The low and middle concentration (0.2-20 mg/L) of total ginsenosides had the significant promoting effect on chemotaxis response of F. solani, and the chemotaxis response of C. destructans happened at different concentration of ginsenosides, and the SGR, MGR, and the amount of MG of these two pathogens had also been significantly improved, whereas the chemotaxis response effect decreases as the ginsenosides concentration increases.