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Acta Agron Sin ›› 2015, Vol. 41 ›› Issue (11): 1663-1670.doi: 10.3724/SP.J.1006.2015.01663

• CROP GENETICS & BREEDING · GERMPLASM RESOURCES · MOLECULAR GENETICS • Previous Articles     Next Articles

Cloning and Expression of BnFAD2-C1 Gene Involved in Brassica napus and Analysis of Transcription Regulation Elements

LIU Fang**,LIU Rui-Yang**,PENG Ye,GUAN Chun-Yun*   

  1. College of Agronomy, Hunan Agricultural University / National Oilseed Crops Improvement Center in Hunan, Changsha 410128, China
  • Received:2015-04-04 Revised:2015-07-20 Online:2015-11-12 Published:2015-08-11

Abstract:

Fatty acid desaturase gene (FAD2) is a key factor in regulating oleic acid content. There are four copies located on chromosomes A1, C1, A5, and C5 in Brassica napus. One copy containing 1155 bp open reading frame was cloned with previous research method and named as BnFAD2-C1 which was location on chromosome C1 based on the genome database information of oleracea and oilseed. Then the untranslated regions (UTR) of 5′and 3′end with 175 bp and 212 bp length respectively were cloned by RACE (rapid-amplification of cDNA ends) technique. The expression pattern of BnFAD2-C1 gene was identified using quantity PCR technique, showing a seed-specific inducible expression in mid developmental seeds and a background-level expression in root, flower and siliqua wall. The promoter and intron region were also cloned and analyzed using PLACE and PlantCARE websites to predict some potential cis-elements in regulating BnFAD2-C1 gene transcription. At the same time, jasmonic acid (JA) was inferred to make certain contributions to regulate BnFAD2-C1 gene expression showing a changeable expression quantity when treated with Jasmonic acid.

Key words: Brassica napus, BnFAD2-C1, RACE, Bioinformatics analysis, Jasmonic acid

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