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forest biotechnology
相关语句
  林木生物技术
     Forest Biotechnology and Conservation of Gene Resources in Germany
     德国林木生物技术研究现状
短句来源
     This paper deals with the status of forest biotechnology development, main con-tents, methods and results of researches in Germany in early 1990s.
     本文介绍了德国90年代初期林木生物技术的发展现状、研究内容、研究方法以及研究结果。
短句来源
  “forest biotechnology”译为未确定词的双语例句
     Populus L. is an important genus globally planted in commercial forest plantations and some species are used as model plants in the study of forest biotechnology.
     杨树(Populus L.) 既是世界上重要的经济树种,又是林木基因工程研究的模式树种。
短句来源
     Many important advances in forest biotechnology have been made.
     林业生物技术的研究已经取得了许多重要的进展。
短句来源
  相似匹配句对
     Mycorrhizal Biotechnology of Forest Trees
     林木菌根生物工程
短句来源
     forest .
     林。
短句来源
     Current Advances of Biotechnology on Forest Genetic Breeding
     跨世纪林木高新科技——林木生物工程育种
短句来源
     The Forest Sports
     森林里的运动会
短句来源
     ON BIOTECHNOLOGY AND BIOSAFETY
     生物技术与生物安全
短句来源
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  forest biotechnology
The Forest Biotechnology Centre is an interdisciplinary research group dedicated to the development and application of advanced technology for the enhancement of forest regeneration.
      
Due to these limitations, testing programs at the Forest Biotechnology Centre (BCRI) have used limiting environmental conditions to represent the planting site.
      
Forest biotechnology offers potential that cannot be realized from conventional breeding because of the long life of forest trees and because of the long time required to make genetic gains through tree improvement programs.
      
The three major components of forest biotechnology addressed in this paper are asexual propagation, genomics and genetic engineering (GE).
      
Forest biotechnology: Innovative methods, emerging opportunities
      
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This paper deals with the status of forest biotechnology development, main con-tents, methods and results of researches in Germany in early 1990s. In Germany thebiotechnological researches have shifted from softwood species gradually to hardwood speci-es. Researches include the regeneration technology(micropropagation), genesis of somaticembryoid, genesis of gametophytic embryoid (anther culture, protoplast culture), inductionof mature and immature embryoids, and approaches to conservation of culture materials...

This paper deals with the status of forest biotechnology development, main con-tents, methods and results of researches in Germany in early 1990s. In Germany thebiotechnological researches have shifted from softwood species gradually to hardwood speci-es. Researches include the regeneration technology(micropropagation), genesis of somaticembryoid, genesis of gametophytic embryoid (anther culture, protoplast culture), inductionof mature and immature embryoids, and approaches to conservation of culture materials atdifferent levels (plant, tissue and cell) at low temperature. Finally, some opinions are givenabout the researches on forest biotechnology in China.

本文介绍了德国90年代初期林木生物技术的发展现状、研究内容、研究方法以及研究结果。德国生物技术研究的对象已逐渐由针叶树种转向硬阔叶树种;生物技术已成为基因资源保存研究的重要组成部分,组培实验室随之成为基因资源研究的场所。最后,作者对我国生物技术的开展提出几点建议。

Many important advances in forest biotechnology have been made. The use of genetic transformation and the ap-plications of transgenic trees in modern forestry is now an important field. Two basic methodologies particle bombardment and Agrobacterium-mediated transformation have been used on conifers. However, routine procedures exist for only a limited number of conifers. As a result only a few species have been successfully transformed into stable transgenic plants. The use of a particle bombardment has...

Many important advances in forest biotechnology have been made. The use of genetic transformation and the ap-plications of transgenic trees in modern forestry is now an important field. Two basic methodologies particle bombardment and Agrobacterium-mediated transformation have been used on conifers. However, routine procedures exist for only a limited number of conifers. As a result only a few species have been successfully transformed into stable transgenic plants. The use of a particle bombardment has been more successful and transgenic plants have been produced in Picea abies, Picea glauca, Picea mariana, and Pinus radiata, although the level of production of stable transgenic plants is lower than that of Agrobacte-rium. At present, breeding programs have been directed toward improving bole shape, growth rate, wood properties, and quality, as well as toward improving root and shoot performance, pest resistance, stress tolerance, herbicide resistance, and ability to resist stresses, which will drive forestry to enter a new era of productivity and quality. This article provides a brief overview of the current state of knowledge on genetic transformation in conifers.

林业生物技术的研究已经取得了许多重要的进展。遗传转化和转基因树的应用是当代林业研究中的重要领域。尽管微弹和农杆菌介导的转化已经被应用于重要的针叶树种,转基因植株仅仅在少数几个针叶树种上获得成功。大多数转基因针叶树来自微弹介导的转化,例如转基因的挪威云杉、白云杉、黑云杉和辐射松等。利用转基因技术可以改良树的形状、生长率、木材质量、抗虫性、抗除草剂能力和对不良环境的抵抗力。本文对遗传转化技术在这些领域中所取得的进展做了简短的综述。

Since the first terpenoid synthase cDNA was obtained by the reverse genetic approach from grand fir, great progress in the molecular genetics of terpenoid formation has been made with angiosperms and genes encoding a monoterpene synthase, a sesquiterpene synthase, and a diterpene synthase. Tree killing bark beetles and their vectored fungal pathogens are the most destructive agents of conifer forests worldwide. Conifers defend against attack by the constitutive and inducible production of oleoresin that accumulates...

Since the first terpenoid synthase cDNA was obtained by the reverse genetic approach from grand fir, great progress in the molecular genetics of terpenoid formation has been made with angiosperms and genes encoding a monoterpene synthase, a sesquiterpene synthase, and a diterpene synthase. Tree killing bark beetles and their vectored fungal pathogens are the most destructive agents of conifer forests worldwide. Conifers defend against attack by the constitutive and inducible production of oleoresin that accumulates at the wound site to kill invaders and both flush and seal the injury. Although toxic to the bark beetle and fungal pathogen, oleoresin also plays a central role in the chemical ecology of these boring insects. Recent advances in the molecular genetics of terpenoid biosynthesis provide evidence for the evolutionary origins of oleoresin and permit consideration of genetic engineering strategies to improve conifer defenses as a component of modern forest biotechnology. This review described enzymes of resin biosynthesis, structural feathers of genes genomic intron and exon organization, pathway organization and evolution, resin production and accumulation, interactions between conifer and bark beetle, and engineering strategies to improve conifer defenses.

自从利用反义遗传学方法成功地分离第一个萜类化合物合成酶的cDNA以来,萜类化合物形成的分子遗传学研究取得了长足的进展。并且单萜、倍半萜和双萜等的合成酶基因也相继分离成功。在针叶树中,甲虫和它的真菌病原体是毁坏树林的重要因子。但是,针叶树通过组成性松树油脂来防御虫害并将它们杀死在伤害部位。树脂生物合成的分子遗传学新进展表明可以利用生物技术方法提高针叶树的防御能力。本文综述了树脂生物合成酶及其基因组结构特点。树脂生物合成途径及树木和虫害间的相互作用,并提出了提高树木防御力的工程策略。表1图3参46

 
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