Researchers studied the genes responsible for storing proteins in rice seeds. They found that rice seeds have different types of storage proteins, such as glutelin and prolamin. These proteins are important for human nutrition and plant growth. The genes for these proteins are located on specific regions of the rice genome. The study showed that most glutelin and prolamin genes are only expressed in the seed endosperm, while a few are also expressed in germinating seeds. The researchers identified specific promoter regions that control the expression of these genes. This information can help improve seed traits and substance production in rice.