Switching of the rotational direction of rhizoidal colonies in a newly isolated Bacillus mycoides strain Ko01

The Journal of General and Applied Microbiology

Courtney Cochran¹  Hisako Masuda¹ 

[1] School of Sciences, Indiana University Kokomo

关键词: Bacillus mycoides;    chirality;    colony morphology;    spreading;   

DOI  :  10.2323/jgam.62.47

学科分类：微生物学和免疫学

来源: Applied Microbiology, Molecular and Cellulrar Biosciences Research Foundation

【 摘 要 】

Bacillus mycoides are known to form rhizoidal colonies on solid medium. In this study, a new strain of B. mycoides, strain Ko01, was isolated from soil. Genetic and growth patterns indicated that this strain belongs to subgroup II of the B. cereus group. Strain Ko01 forms extensive rhizoidal colonies with predictable directions of rotation. The concentration of the agar, and not the chemical composition, altered the direction of the colony rotation, switching from counterclockwise to clockwise. Agar concentration-dependent switching of rotation direction was unique to strain Ko01 and was not seen in colonies of other B. mycoides strains that were tested. Factors affecting colony chirality patterns appeared to be variable among B. mycoides strains. This feature can be used for the classification of B. mycoides strains.

【 授权许可】

Unknown