NASA, University of Hyderabad found out that bacteria are discovered that can help to the growth of plants in space.
The new bacterial species named Methylobacterium ajmalii, which contains genes that fix nitrogen, dissolve phosphate and assimilate potassium which has been found out to bust stress that plants undergo in zero gravity in space these all three nutrients are important for plants for its growth on earth and space.
If the bacterial mission is successful then the astronauts need not depend upon canned food. They could grow their own food in space. They can have fresh food and fruits which helps for their long mission instead of depending on the processed food.