Journal of Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Identification and Functional Characterization of the GALACTINOL SYNTHASE (MoGolS1) Gene in Melissa officinalis Plants

  • Kim, Jun-Hyeok (Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University) ;
  • Hossain, Acktar Mohammad (Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University) ;
  • Kim, Na-Hyun (Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University) ;
  • Lee, Dong-Ho (Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University) ;
  • Lee, Ho-Joung (Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University)
  • Received : 2011.10.28
  • Accepted : 2011.11.01
  • Published : 2011.12.31
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Abstract

Galactinol and rafinose accumulation in plants is associated with stressful environmental conditions such as cold, heat, or dehydration by the action of galactinols synthase (GolS) in the raffinose family of oligosaccharides biosynthetic pathway from UDP-galactose. Moreover, several reports mentioned that GolS transcription is up regulated by various environmental stresses like cold, heat, dehydration. Therefore, to determine whether MoGolS1 was induced with the abiotic stress we analyzed the expression pattern of the gene under various abiotic stresses like heat, cold, abscisic acid, sucrose and salt concentration in the lemon balm plants grown in standard MS medium. The MoGolS1 gene was 981-bp in length encoding 326 amino acids in its sequence and shared 77 and 76% sequence similarity with Arabidopsis thaliana galactinol synthase4 (AtGolS4) and AtGolS1 genes respectively. The MoGolS1 gene was strongly expressed by the abiotic stress induced by sucrose, ABA or heat shock. It was also expressed in responses to cold, Identification and Functional Characterization of the GALACTINOL SYNTHASgene induction with various stresses may be possible for itscrucial function in abiotic stress tolerance in plants, providing a good engineering target for genetic engineering.

Keywords

References

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