การถ่ายยีนและวิเคราะห์การแสดงออกของยีน OsB2 ที่ควบคุมการสังเคราะห์แอนโทไซยานินในข้าว
Main Article Content
Abstract
Abstract
Anthocyanins are important antioxidants found in black pericarp rice. The OsB2 gene encodes a transcription factor which can activate anthocyanin biosynthesis in rice. In this study, transformation of Kasalath variety (red pericarp rice) using OsB2 cloned from a black pericarp rice via Agrobacterium was investigated for functional study on anthocyanin biosynthesis in rice. Fifty-nine transformants were regenerated and PCR analysis showed that 84.28 % carried the OsB2 transgene. The phenotypic traits of transgenic rice were similar to those of wild-type but developing and mature seeds showed purple pigmentation on their pericarp. Segregation analysis of gus genes showed the 3 : 1 ratio in T1 generation, indicating a single gene insertion in the rice genome. Phenotypic traits of T1 progeny were similar to those of the T0 transgenic rice plants. Semi-quantitative RT-PCR analysis revealed that overexpression of OsB2 gene in seedlings was found in T1 plants. In addition, seeds of T1 transgenic rice contained higher antioxidant activity than that of the untransformed plants.
Keywords: Oryza sativa; OsB2; transformation; anthocyanin
Article Details
บทความที่ได้รับการตีพิมพ์เป็นลิขสิทธิ์ของคณะวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยธรรมศาสตร์ ข้อความที่ปรากฏในแต่ละเรื่องของวารสารเล่มนี้เป็นเพียงความเห็นส่วนตัวของผู้เขียน ไม่มีความเกี่ยวข้องกับคณะวิทยาศาสตร์และเทคโนโลยี หรือคณาจารย์ท่านอื่นในมหาวิทยาลัยธรรมศาสตร์ ผู้เขียนต้องยืนยันว่าความรับผิดชอบต่อทุกข้อความที่นำเสนอไว้ในบทความของตน หากมีข้อผิดพลาดหรือความไม่ถูกต้องใด ๆ
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