| Summary: | Phosphatidylethanolamine-binding-protein (PEBP) domain-containing proteins play important roles in multiple developmental processes of plants; however, functions of few members in the <i>PEBP</i> gene family have been elucidated in rice and other crops. In this study, we found that twenty <i>OsPEBPs</i> genes identified in rice are not evenly distributed on the chromosomes. Four colinear pairs are identified, suggesting the duplication of <i>OsPEBPs</i> during evolution. The OsPEBPs are classified into six subgroups by phylogenetic analysis. The structure of all the <i>OsPEBP</i> genes and encoded proteins are similar. The 262 PEBP domain-containing proteins from crops are divided into six groups. The number of colinear pairs varies between rice and other crops. More than thirty <i>cis</i>-acting elements in the promoter region of <i>OsPEBPs</i> are discovered. Expression profiles of <i>OsPEBP</i> genes are differential. Most of the <i>OsPEBPs</i> expression can be regulated by NaCl, ABA, JA, and light, indicating that <i>OsPEBPs</i> may be involved in the control of the response to the environmental signals. These results lay sound foundation to further explore their functions in development of rice and crops.
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