期刊
JOURNAL OF PLANT BIOLOGY
卷 48, 期 3, 页码 263-269出版社
SPRINGER HEIDELBERG
DOI: 10.1007/BF03030521
关键词
asiaticoside; Centella asiatica; squalene synthase; triterpene saponins
We have cloned and characterized a gene for squalene synthase (SQS) from Centella asiatica (L.) Urban, a species that produces a large quantity of triterpene saponins such as asiaticoside and madecassoside. Its full-length cDNA clone was isolated by RACE PCR. The sequence of pSQS contains an open reading frame of 1248 nucleotides, which code for 416 amino acids with a molecular mass of 47.3 kDa. Southern analysis revealed that one copy might exist in the C asiatica genome. We also determined that 0.1 mM methyl jasmonate was sufficient to up-regulate those levels of CaSQS mRNA.
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