the transcription of osbhlhl is specifically induced in root by cold, not nad, peg and aba . the osbhlhl protein located in nuclear and has transcactivity activity and the ability to dimerize between itself osbhlh1基因在水稻幼苗的表达是受冷胁迫诱导的,而对nacl、peg和aba处理表达不敏感,且主要在根中受诱导表达,叶中的表达则不明显。