When Bacteria Hang On: Secrets of Long-Term Survival

Have you ever wondered how some bacteria can survive for ages without food? This is exactly what scientists found in Streptomyces minutiscleroticus. These little guys stay alive even when food is scarce. They keep making proteins, and surprisingly, they can even grow a bit, shown by their sensitivity to antibiotics that block cell wall growth. But don’t be fooled, they don’t make new cells as fast as they die. It’s like for every one old cell that dies, slightly less than one new cell is born. So, how do they pull off this trick? It turns out, they have some clever genes that get switched on by a sugar called sucrose. This sugar isn’t edible for them, but it seems to set off a chain reaction that makes a small amount of glucose, which they can use. This low-energy resources help them hang on during tough times. Scientists also found that a molecule called (p)ppGpp, a chaperone protein called ClpX, and a sensor protein called SasA play key roles in their survival. Mess with these, and the bacteria struggle to live long. But there’s more to learn about how these genes work together to keep these tiny survivors going.

Actions