Two cDNAs encoding cinnamate 4_hydroxylase homologues were isolated from Gossypium arboreum L. by PCR_mediated method using a primer based on a conserved region of plant cytochrome P450.

• 根据P450保守序列设计简并引物，从亚洲棉(Gossypium arboreum L.；) cDNA文库中分离到两个肉桂酸_4_羟化酶(C4H)同源cDNA克隆。