摘要
鲨烯合酶(SQS)是植物甾醇和三萜化合物生物合成途径中的关键酶。以巴西橡胶树为试验材料,提取胶乳总RNA,利用RT-PCR以及RACE的方法克隆橡胶树鲨烯合酶cDNA编码区片段,并进行序列分析。结果表明:橡胶树鲨烯合酶cDNA编码区为1 239bp,编码413个氨基酸,命名为HbSQS。荧光定量分析表明鲨烯合酶基因在不同组织里表达水平存在明显差异,且受乙烯调控。
Squalene synthase （SQS） is a key enzyme in plant terpenoid biosynthetic pathway. The total RNA were extracted from Hevea brasiliensis relax, and the cDNA of squalene synthase was cloned using RT-PCR and RACE strategy. The results showed that the cDNA（named as HbSQS）contained a 1 239 bp open reading frame and encoded a predicted protein of 413 amino acids. SYBR Green I Real Time RTPCR analysis indicated that the HbSQS was more highly expressed in bark than in leaf. The transcription of HbSQS in latex was induced by ethylene.
出处
《广西植物》
CAS
CSCD
北大核心
2014年第2期235-241,共7页
Guihaia
基金
中国热带农业科学院橡胶研究所基本业务费专项(1630022011021)
关键词
橡胶树
鲨烯合酶
序列分析
Hevea brasiliensis
squalene synthase
sequence analysis
