chloroplast dna 中文意思是什麼
chloroplast dna
解釋
葉綠體dna- chloroplast : n. 【植物；植物學】葉綠體。
- dna : 1. deoxyribonucleic acid 【生物化學】去[脫]氧核糖核酸。2. deoxypentose-nucleic acid 去[脫]氧戊糖核酸。
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Because there are many copies of chloroplast dna and the chloroplast has a strong tolerance to accumulation of the products expressed by the introduced foreign gene, a high level of expression is often happened in chloroplast transformation. in addition, because of prokaryotic property of the chloroplast, the prokaryotic gene can be expressed in chloroplast without any modification and multigene can be simultaneously transferred in " polycistron ", which is impossible in nucleic transformation
另外，由於葉綠體基因組的原核性質，對來自原核生物的外源基因無需改造就可以在葉綠體內高效表達，而且可以將多個外源基因採取「多順反子」的原核表達形式同時引入，並由共同的啟動子控制，既方便操作又可避免由於存在多個相同啟動子所帶來的「共沉默」 。 -
3. the mechanism of dna integration mediated by homologous recombination in chloroplast transformation was tentatively explored. we isolated two chloroplast dna fragments from brassica napus and used them as targeting sequence to integr
成功地通過h次轉化獲得整合併表達多基因的轉基因煙草，縮短了研究周期，對相關轉基因植物的研究有一定參考價值。 -
The genomics dna of the transformants was extracted and assayed by pcr with nptii primer camv35 / cp primer and the results indicated that the chloroplast shsp gene has been integrated into the genomics of the tomato. then the transgenic tomato were exposed to low temperature ( in winter, on natural condition, the top temperature was 15 ? and the lowest temperature was 5 and a set of physiology parameters were measured after 6 weeks. the results were shown as follows : 1 ) effect on growth height of the transgenic tomato and the control plants after 6 weeks at low temperature showed that the transformants had been grown faster than the control. in addition, the leaves of the control plants appeared to be much reder than the transgenic tomato, and the change were obvious followed by far from the treated time at low temperature, which suggested that the constituently expression of the chloroplast shsp had some protective fountions to the tomato at low temperature
提取轉基因番茄基因組dna ，分別以npt和35s cp引物對其進行pcr分析，結果表明葉綠體shsp基因已整合進番茄基因組中；對轉基因番茄進行低溫處理（冬季，自然條件下（無加熱的溫室） ，白天最高溫度15 ，夜間最低溫度5 ） ，生長6周后，檢測轉基因番茄的系列生理指標，主要結果如下： 1 ）生長勢：測量轉基因番茄與對照（未轉基因番茄）的株高，結果顯示轉基因植株生長明顯快于對照，且從外觀上看到對照葉片發紅程度遠大於轉基因植株，隨著低溫時間延長，對比更加明顯，說明葉綠體shsp的組成性表達在低溫下對番茄具有一定的保護作用。
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