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Promoter에 따른 밀 소포자 유래 배에서 transient GUS 유전자 발현

Effect of Promoter on Transient GUS Expression in Microspore-derived Embryos of Wheat

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주제분류농학

초록

Abstract

Transient expression profiles for several chimeric β-glucuronidase (GUS) gene constructs were determined in microspore-derived embryos of wheat following microprojectile bombardment. The constructs analyzed consisted of the uidA (GUS) reporter gene driven by six different promoters [Cauliflower Mosaic Virus 35S (CaMV35S), Nopaline synthase (NOS), Mannopine synthase (MAS), Chlorella Mosaic Virus Adenin methyltransferase (AMT), maize Ubiquitin 1 (UBI1), and enhanced 35S (E35S)]. The total numbers of GUS blue spot were determined manually under a dissecting microscope after histochemical staining for GUS. Results suggest that the E35S promoter is the most active and UBI1 promoter is the second active in embryos or embryogenic calli derived from wheat microspore. In addition, by flurometric assay on GUS, the E35S promoter was the best. Therefore, both UBI1 and E35S promoter are suitable for constitutive expression of the gene of interest in microspore-derived embryos of wheat. This information describing promoter functionality in wheat will be important when designing gene constructs for traits modification and when choosing appropriate cultivars for improvement through gene transfer experiments.

참고문헌 (30)

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