The study looked at different types of sweet corn plants to see how they respond to changes in humidity. They found that some plants close their stomata (tiny openings on leaves) when it's humid to save water. However, the speed at which stomata reopen after closing varied among plant types. They also tested if differences in certain proteins affected water flow in leaves, but this didn't explain why some plants saved more water than others. Overall, the study suggests that the ability of sweet corn plants to save water in humid conditions is not solely determined by how quickly their stomata reopen or by specific proteins in their leaves.