Heterologous Expression of a Gibberellin 2-Oxidase Gene from Arabidopsis thaliana Enhanced the Photosynthesis Capacity in Brassica napus L.

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• 作者：Bo Zhou (1)
  Dan Peng (1)
  Jianzhong Lin (1)
  Xingqun Huang (1)
  Wusheng Peng (2)
  Reqing He (1)
  Ming Guo (1)
  Dongying Tang (1)
  Xiaoying Zhao (1)
  Xuanming Liu (1)
  
• 关键词：AtGA2ox8 ; Dwarf ; Seed germination ; Chlorophyll content ; The photosynthesis capacity
• 刊名：Journal of Plant Biology
• 出版年：2011
• 出版时间：February 2011
• 年：2011
• 卷：54
• 期：1
• 页码：23-32
• 全文大小：644KB
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• 作者单位：Bo Zhou (1)
  Dan Peng (1)
  Jianzhong Lin (1)
  Xingqun Huang (1)
  Wusheng Peng (2)
  Reqing He (1)
  Ming Guo (1)
  Dongying Tang (1)
  Xiaoying Zhao (1)
  Xuanming Liu (1)
  
  1. Bioenergy and Biomaterial Research Center, Collage of Biology, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, Hunan, China
  2. Academy of Seed Industry of Hunan Yahua, Changsha, 410001, Hunan, China
  

文摘

Gibberellins (GAs) are endogenous hormones that play an important role in regulating plant stature by increasing cell division and promoting seed germination. The GA2-oxidase gene from Arabidopsis thaliana (AtGA2ox8) was introduced into Brassica napus L. by Agrobacterium-mediated floral-dip transformation with the aim of decreasing the amount of bioactive GA and hence reduced the plant height. As anticipated, the transgenic plant exhibited dwarf phenotype. Importantly, compared with the wild type, the transgenic plants had delayed the seed germination, increased the chlorophyll content (28.7-6.3%) and photosynthesis capacity (14.3-8.7%) in a single leaf. At the same time, the photosynthesis capacity of the whole plants was significantly enhanced (35.7-8.6%) due to the extra leaves and branches.