An S-like RNase cDNA had been isolated from common wheat (Triticum aestivum L). The transcription of WRN1 mRNA was down-regulated by natural- and dark-induced senescence. But it was not senile-tissue-specific. As the ...An S-like RNase cDNA had been isolated from common wheat (Triticum aestivum L). The transcription of WRN1 mRNA was down-regulated by natural- and dark-induced senescence. But it was not senile-tissue-specific. As the two key histidine residues were replaced, WRN1 may not be active as RNase. Southern blotting analysis showed that WRN1 exists as one of a small gene family in common wheat genome.展开更多
Violaxanthin de-epoxidase (VDE) is the key enzyme in the xanthophyll cycle and protects plant photosynthetic apparatus from the damage of excessive light. A wheat (Triticum aestivum L cv. Xiaoyan 54) VDE cDNA was obta...Violaxanthin de-epoxidase (VDE) is the key enzyme in the xanthophyll cycle and protects plant photosynthetic apparatus from the damage of excessive light. A wheat (Triticum aestivum L cv. Xiaoyan 54) VDE cDNA was obtained using RT-PCR method. Its deduced protein sequence shares high identity with that of Arabidopsis and rice. Southern blot revealed that there are three copies of VDE gene per haploid genome of wheat. VDE transcript levels were higher in green leaf than in root, seed and etiolated leaf. Northern blotting analysis indicated that VDE mRNA level is induced during greening process of etiolated wheat seedling and increased by intense light illumination.展开更多
A breast basic conserved 1 (BBC1) cDNA has been isolated from common wheat (Triticum aestivum L.). Analysis of amino acid sequence derived from the cDNA showed that the wheat BBC1 was highly hydrophilic and rich in al...A breast basic conserved 1 (BBC1) cDNA has been isolated from common wheat (Triticum aestivum L.). Analysis of amino acid sequence derived from the cDNA showed that the wheat BBC1 was highly hydrophilic and rich in alanine, lysine, glutamic acid and arginine residues. The transcription of wheat BBC1 mRNA was regulated by low temperature. Southern blotting analysis showed that BBC1 existed as a small family in common wheat genome.展开更多
西方近年来关于所谓"自由国际秩序"(liberal international order)是否已"终结"的辩论,无论在理论和政策层面都存在着相当的盲点和误区。将中俄两国定义为该秩序的"修正主义"大国不仅是匪夷所思,而且忽...西方近年来关于所谓"自由国际秩序"(liberal international order)是否已"终结"的辩论,无论在理论和政策层面都存在着相当的盲点和误区。将中俄两国定义为该秩序的"修正主义"大国不仅是匪夷所思,而且忽视了一个重要的历史事实,即这一秩序的早期阶段与冷战的两极体系是一个共生(symbiotic)建构,它不仅在国际层面制约了美国力量的滥用,而且在相当程度上改进或克服了美国国内制度的弊端(种族隔离等)。在冷战后期,美国主导的"自由国际秩序"对两个共产主义大国也起到一定的示范作用。冷战以后,中俄对"自由国际秩序"在不同的政策领域采取了不同的对接方式,也导致了不同的结果:中国的长期稳定崛起,以及俄罗斯与西方日益走向对抗。然而成也萧何,败也萧何,对所谓"自由国际秩序"损害最大的,恰恰是处于巅峰状态、对外扩张无度的西方本身。对中俄来说,"自由国际秩序"的困境,需要国际社会集体努力来修复。在没有全球性危机的情况下,如果把"婴儿"(自由国际秩序)和"洗澡水"一起倒掉,那么无人会从中获益。而这恰恰是我行我素的特朗普政府的政策走向。展开更多
文摘An S-like RNase cDNA had been isolated from common wheat (Triticum aestivum L). The transcription of WRN1 mRNA was down-regulated by natural- and dark-induced senescence. But it was not senile-tissue-specific. As the two key histidine residues were replaced, WRN1 may not be active as RNase. Southern blotting analysis showed that WRN1 exists as one of a small gene family in common wheat genome.
文摘Violaxanthin de-epoxidase (VDE) is the key enzyme in the xanthophyll cycle and protects plant photosynthetic apparatus from the damage of excessive light. A wheat (Triticum aestivum L cv. Xiaoyan 54) VDE cDNA was obtained using RT-PCR method. Its deduced protein sequence shares high identity with that of Arabidopsis and rice. Southern blot revealed that there are three copies of VDE gene per haploid genome of wheat. VDE transcript levels were higher in green leaf than in root, seed and etiolated leaf. Northern blotting analysis indicated that VDE mRNA level is induced during greening process of etiolated wheat seedling and increased by intense light illumination.
文摘A breast basic conserved 1 (BBC1) cDNA has been isolated from common wheat (Triticum aestivum L.). Analysis of amino acid sequence derived from the cDNA showed that the wheat BBC1 was highly hydrophilic and rich in alanine, lysine, glutamic acid and arginine residues. The transcription of wheat BBC1 mRNA was regulated by low temperature. Southern blotting analysis showed that BBC1 existed as a small family in common wheat genome.
文摘西方近年来关于所谓"自由国际秩序"(liberal international order)是否已"终结"的辩论,无论在理论和政策层面都存在着相当的盲点和误区。将中俄两国定义为该秩序的"修正主义"大国不仅是匪夷所思,而且忽视了一个重要的历史事实,即这一秩序的早期阶段与冷战的两极体系是一个共生(symbiotic)建构,它不仅在国际层面制约了美国力量的滥用,而且在相当程度上改进或克服了美国国内制度的弊端(种族隔离等)。在冷战后期,美国主导的"自由国际秩序"对两个共产主义大国也起到一定的示范作用。冷战以后,中俄对"自由国际秩序"在不同的政策领域采取了不同的对接方式,也导致了不同的结果:中国的长期稳定崛起,以及俄罗斯与西方日益走向对抗。然而成也萧何,败也萧何,对所谓"自由国际秩序"损害最大的,恰恰是处于巅峰状态、对外扩张无度的西方本身。对中俄来说,"自由国际秩序"的困境,需要国际社会集体努力来修复。在没有全球性危机的情况下,如果把"婴儿"(自由国际秩序)和"洗澡水"一起倒掉,那么无人会从中获益。而这恰恰是我行我素的特朗普政府的政策走向。
