A new male-sterile gene, ms157, was discovered in Arabidopsis thaliana. This gene was found to be responsible for the absence of pollen grains in mutant anthers. By using a map-based cloning strategy, researchers located ms157 to a specific region on chromosome Ⅳ. This region had not previously been associated with male sterile genes, suggesting that ms157 could be a novel discovery. Further study of this gene could provide valuable insights into the development of anthers in Arabidopsis thaliana.