Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2006, Vol. 22 ›› Issue (8): 69-69.

Special Issue: 生物技术 水产渔业 玉米

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Construction of Plant Expression Vector Containing Genes Encoding The Key Biosynthesis Enzyme of Astaxanthin( bkt) and Its Expression in Zea mays L.

Xu jing, Qu Yanying, Yang Qinli, Yu shanlin,Tan Congping,Hou Yanhua, Qin song   

  • Online:2006-08-05 Published:2006-08-05

Abstract: Astaxanthin with high antioxidant activity is of great application value. Bkt is the key biosynthesis enzyme of astaxanthin which encoded by bkt gene. Bkt gene expression cassette was constructed by replacing GUS gene in vector pBI221 with bkt gene obtained by PCR method, which contained the CaMV 35S promoter and NOS terminator. Plant expression vector pCAMBIA1301-bkt was constructed by inserting bkt gene expression cassette into multiple cloning site in vector pCAMBIA1301.Bkt gene was transferred into maize Qi 319 mediated by Agrobacterium tumefaciens. The results of GUS histochemical assay indicated that bkt gene had been transferred into maize emberyogenic calli.

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