FBA transgenic Anabaena sp. PCC 7120 was obtained by the method of triprentalmating for conjugative transfer. 2) The enzyme activity of FBA in transgenic cells was 31.2% higher than that of wildtype cells.

• 2)对转基因鱼腥藻及转空载体鱼腥藻、野生型鱼腥藻中FBA 酶活性比较发现；转基因藻中FBA 酶活性得到了提高；大约比野生藻提高了31.；2%25。