کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8416535 1545573 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of altered expression of LEAFY COTYLEDON1 and FUSCA3 on microspore-derived embryogenesis of Brassica napus L.
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیوتکنولوژی یا زیست‌فناوری
پیش نمایش صفحه اول مقاله
Effects of altered expression of LEAFY COTYLEDON1 and FUSCA3 on microspore-derived embryogenesis of Brassica napus L.
چکیده انگلیسی
Brassica napus (Bn) microspore-derived embryogenesis has become a model system to study basic aspects of plant development. Recognized transcription factors governing embryogenesis include: FUSCA3 (FUS3), a member of the plant-specific B3-domain family, and LEAFY COTYLEDON1 (LEC1), a member of the HAP3 subunit of the CCAAT binding factor family. The effects of altered expression of both genes were investigated during microspore-derived embryogenesis in established B. napus lines over-expressing or down-regulating BnLEC1, as well as in tilling lines where BnFUS3 was mutated. While over-expression of BnLEC1 decreases the yield of microspore-derived embryos (MDEs) without affecting their ability to regenerate plants, suppression of BnLEC1 or BnFUS3 reduced both embryo number and regeneration frequency. Embryos produced by these lines showed structural abnormalities accompanied by alterations in the expression of several embryogenesis-marker genes. Oil accumulation was also altered in the transgenic MDEs. Total oil content was increased in MDEs over-expressing BnLEC1 and decreased in those suppressing BnLEC1 or BnFUS3. Mutation of BnFUS3 also resulted in a small but significant increase in linoleic (C18:2) acid. Together this study demonstrates the crucial role of BnLEC1 and BnFUS3 during in vitro embryogenesis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Genetic Engineering and Biotechnology - Volume 14, Issue 1, June 2016, Pages 19-30
نویسندگان
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