Variation in Microbial Growth under Hypergravity

Abstract

We report bacterial growth under hypergravitational stress. Cultures of E. coli and B. subtilis were subjected to the gravitational stress (38g) and their growth curves were measured using UV-VIS spectrophotometer. Experiments were also carried out to investigate nutrient consumption under hypergravitational conditions. Our results show considerable difference between samples subjected to hypergravity and normal conditions. This study has importance to understand bacterial response to external stress factors like gravity and changes in bacterial system in order to adapt with stress conditions for its survival.