What are the functions of gas vacuoles? -Biology

What are the functions of gas vacuoles? -Biology
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Gas vacuoles help bacteria in buoyancy and enable them to float at the desired depth. They do so by inflating and deflating the vesicles. Main functions include:They help the photosynthetic bacteria in getting optimal light and oxygen.These gas vesicles show coordinated movement with light. They help bacteria come near the surface during daytime and trap the light to perform photosynthesis. At night it enables them to go deeper to extract nutrients.Gas vesicles help bacteria maintain salinity, prevent osmotic shock and sustain extreme environments. E.g. Halobacterium, a halophile, has gas vesicles, which help them float in salt water.
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