• 제목/요약/키워드: agricultural biotechnology

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Korea Brassica Genome Sequencing Project

  • Kwon, Soo-Jin;Yang, Tae-Jin;Kim, Jung-Sun;Kim, Jin-A;Jin, Min-A;Park, Jee-Young;Choi, Beom-Soon;Lim, Myung-Ho;Lee, Soo-In;Lee, Sang-Choon;Kim, Ho-Il;Lim, Ki-Byung;Lim, Yong-Pyo
    • 한국유전체학회:학술대회논문집
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    • 한국유전체학회 2006년도 The 15th Korean Genome Organization Conference KOGO 2006 Annual Meeting
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    • pp.27-27
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    • 2006
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Karyotype Analysis of Subspecies of Brassica campestris by FISH

  • Lee, Soo-In;Kwon, Soo-Jin;Kim, Jung-Sun;Lee, Myung-Chul;Park, Beom-Seok;Kim, Dong-Hern;Jin, Yong-Moon;Kim, Ho-Il;Lim, Ki-Byung
    • 한국식물생명공학회:학술대회논문집
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    • 한국식물생명공학회 2003년도 추계학술대회 발표논문 초록집
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    • pp.102-102
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    • 2003
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Heterologous Expression and Characterization of a Laccase from Laccaria bicolor in Pichia pastoris and Arabidopsis thaliana

  • Wang, Bo;Yan, Ying;Xu, Jing;Fu, Xiaoyan;Han, Hongjuan;Gao, Jianjie;Li, Zhenjun;Wang, Lijuan;Tian, Yongsheng;Peng, Rihe;Yao, Quanhong
    • Journal of Microbiology and Biotechnology
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    • 제28권12호
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    • pp.2057-2063
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    • 2018
  • Laccases can oxidize a variety of phenolic and non-phenolic substrates including synthetic dyes. In this research, a laccase gene Lcc9 from Laccaria bicolor was chemically synthesized and optimized to heterogeneous expression in Pichia pastoris and Arabidopsis thaliana. The properties of recombinant laccase expressed by P. pastoris were investigated. The laccase activity was optimal at 3.6 pH and $40^{\circ}C$. It exhibited $K_m$ and $V_{max}$ values of $0.565mmol\;l^{-1}$ and $1.51{\mu}mol\;l^{-1}\;min^{-1}$ for ABTS respectively. As compared with untransformed control plants, the laccase activity in crude extracts of transgenic lines exhibited a 5.4 to 12.4-fold increase. Both laccases expressed in transgenic P. pastoris or A. thaliana could decolorize crystal violet. These results indicated that L. bicolor laccase gene may be transgenically exploited in fungi or plants for dye decolorization.

Overproduction of 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) confers resistance to the herbicide glyphosate in transgenic rice

  • Lee, Soo-In;Kim, Hyun-Uk;Shin, Dong-Jin;Kim, Jin-A;Hong, Joon-Ki;Kim, Young-Mi;Lee, Yeon-Hee;Koo, Bon-Sung;Kwon, Sun-Jong;Suh, Seok-Chul
    • Journal of Plant Biotechnology
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    • 제38권4호
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    • pp.272-277
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    • 2011
  • Plants expressing Agrobacterium sp. strain CP4 5-enolpyruvylshikimate-3-phosphate synthase (CP4 EPSPS) are known to be resistant to glyphosate, a potent herbicide that inhibits the activity of the endogenous plant EPSPS. In order to develop herbicide-resistant rice, we prepared transgenic rice plants with CP4 EPSPS gene under the control of CaMV 35S promoter for over-expression. A recombinant plasmid was transformed into rice via Agrobacterium-mediated transformation. A large number of transgenic rice plants were obtained with glyphosate and most of the transformants showed fertile. The integration and expression of CP4 EPSPS gene from regenerated plants was analyzed by Southern and northern blot analysis. The transgenic rice plants had CP4 EPSPS enzyme activity levels more than 15-fold higher than the wild-type plants. EPSPS enzyme activity of transgenic rice plants was also identified by strip-test method. Field trial of transgenic rice plants further confirmed that they can be selectively survived at 100% by spay of glyphosate (Roundup$^{(R)}$) at a regular dose used for conventional rice weed control.