Applying proline to the roots of maize plants helps them better withstand drought than spraying it on leaves or soaking seeds. Researchers tested different concentrations of proline on seedlings grown in water and found that root treatment with a low concentration of proline was most effective in reducing damage from drought. Proline increased water content, chlorophyll levels, and photosynthesis rates while decreasing cell damage. It also improved the efficiency of photosynthesis processes in the plants. In conclusion, proline applied to the roots can significantly improve the ability of maize plants to cope with short-term drought stress.