Factors influencing endotrophic sporulation in aerobic sporeforming bacilli

  • V. Iyer
  • Dolly H. Kanga


The ability of strains of representative species of sporeforming bacilli to sporulate endotrophically in distilled water has been demonstrated. The degree of sporulation which a bacterium may undergo is a strain specific character but some species are more capable than others. The effect of various exogenous compounds on the phenomenon has been studied. It has been observed that various metallic salts, organic acids and autoclaved carbohydrates inhibit sporulation at concentrations that are growth inhibitory in nutrient media. It has been postulated that all or most growth inhibitory substances may at similar or lower concentrations inhibit endotrophic sporulation. A hitherto accepted procedure of sterilisation, the autoclaving of concentrated aqueous solutions of sugars, has been found to enhance the ability of the sugar to inhibit sporulation. None of the growth factors tested had any effect on sporulation.


Hexose Bacillus Cereus Nutrient Broth Metallic Salt Manganese Chloride 
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Copyright information

© Indian Academy of Sciences 1960

Authors and Affiliations

  • V. Iyer
    • 1
  • Dolly H. Kanga
    • 1
  1. 1.Microbiology DepartmentS.B. Garda CollegeNavsari

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