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胁迫因素
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  stress factor
     In vitro screening of seed-derived and microspore-derived callus lines was carried out by the biotechnology of plant cell culture, with the raw toxin extract of piricularia oryzae as stress factor.
     利用植物细胞培养离体筛选生物技术,以稻瘟病菌粗毒素提取液作为外源胁迫因素,对水稻种子体细胞和花粉性细胞无性系,进行愈伤组织细胞培养抗性筛选或花药培养抗性筛选。
短句来源
  stress factors
     One of the common stress factors of NaCl and Na2CO3 is Na+ toxicity.
     NaCl、Na_2CO_3所共有的胁迫因素之一是Na~+毒害。
短句来源
     Drought is one of major abiotic stress factors limiting maize production,so improving drought tolerance is an important breeding target in maize.
     干旱是影响玉米生产的主要非生物胁迫因素之一 ,所以玉米的耐旱性遗传改良是玉米育种的一个重要目标。
短句来源
     Effect of Some Stress Factors on Taxol Production in Cell Culture of Taxus chinensis
     几种胁迫因素对中国红豆杉细胞培养的影响
短句来源
     It had been thought that salt and alkali, drought, and chillness were the three most serious abiotic stress factors that could restrict the growth, development and yield of crops for a long time.
     长期以来,盐碱、干旱、寒冷是限制作物生长、发育和产量非常严重的三大非生物胁迫因素
短句来源
     Discussion on Stress Factors and Conservation Strategy of Anhui Tongling River Dolphin Nature Reservation
     安徽铜陵淡水豚自然保护区淡水豚受胁迫因素及保护对策探讨
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  “胁迫因素”译为未确定词的双语例句
     H2O2 acts as signal molecular and intermediate in the downstream of ABA or SA signal transduction pathway, which has recently emerged as a secondary messenger of stress signaling.
     已证明许多胁迫因素可以诱导植物细胞脱落酸(abscisic acid,ABA)和水杨酸(salicylic acid,SA)浓度升高,两个胁迫信使通过诱导H_2O_2而促进气孔关闭。
短句来源
     mechanisms, Helicobacter pylori can resist these stressing factors to survive and induce diseases.
     pylori通过启动一系列的适应性调节机制来抵抗这些胁迫因素以达到保种生存并导致疾病的目的。
短句来源
     Drought is the most important abiotic factors limiting maize production.
     干旱是影响玉米生产的最主要非生物胁迫因素,解决这一问题的有效策略是选育并推广耐早性品种。
短句来源
     Currently the study on the mechanism of plant's tolerance to salt stress via molecular genetics is getting popular, there is still a long way, however, to decipher the secret due to the complexity of the factors influencing the salt stress in advanced plants.
     目前尽管从分子遗传学角度研究植物耐盐机制的工作日益受到重视,但由于高等植物和盐胁迫因素的组成及其相互作用十分复杂,要说清楚这个问题还有相当的距离。 盐藻是真核生物,呈细胞结构,因此渗透调节机制相对简单,对耐盐机理研究可能是一种理想的材料。
短句来源
     The bad environment,such as low temperature,drought,salt,is a very important nonbiological force factor influence agricultural production and ecological environment.
     不良环境如低温干旱盐渍,是影响农业生产和生态环境的一个非常重要的非生物胁迫因素
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  stress factor
Parasitic nematodes are considered a biogenic stress factor in plants.
      
Such long-term adaptation was observed in initially low-resistant females, which could increase their resistance to repeated exposures to the stress factor.
      
The antibiotic anisomycin, a well-known stress factor, has been found to induce the transcription of immediate-early gene c-fos, which is under negative control in cells transformed by oncogenes E1A and cHa-ras.
      
Deuterium Oxide as a Stress Factor for the Methylotrophic Bacterium Methylophilus sp.
      
Strong impact of one stress factor affected plant homeostasis mechanisms by weakening plant response to other stress factors.
      
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  stress factors
asporogenes41 were shown to be resistant to stress factors, including high concentrations of Zn2+(0.8 M) and supraoptimal concentrations of H+(pH 1.2).
      
Deceleration of Vital Activity as a Universal Biochemical Mechanism Ensuring Adaptation of Microorganisms to Stress Factors: A R
      
fluorescens strain 5RL, harboring a recombinant construct in the chromosome, were more resistant to the combined action of the stress factors under study than P.
      
Strains considered for introduction into the environment for bioremediation should be assessed with regard to their susceptibility to the combined effect of anthropogenic and natural stress factors.
      
The reactivating activity of these exometabolites was inversely related to bacterial survival and slightly increased under the influence of stress factors.
      
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In vitro screening of seed-derived and microspore-derived callus lines was carried out by the biotechnology of plant cell culture, with the raw toxin extract of piricularia oryzae as stress factor.JR19 and other mutants resisting rice blast were otbtained.There were significant differences in the resistance to rice blast in seedlings and the esterase isozyme zymograms of embryoes between mutants and original varieties.Some resistant mutants in R2 were still able to resist rice blast in R3.These mutants were...

In vitro screening of seed-derived and microspore-derived callus lines was carried out by the biotechnology of plant cell culture, with the raw toxin extract of piricularia oryzae as stress factor.JR19 and other mutants resisting rice blast were otbtained.There were significant differences in the resistance to rice blast in seedlings and the esterase isozyme zymograms of embryoes between mutants and original varieties.Some resistant mutants in R2 were still able to resist rice blast in R3.These mutants were almost accompanied by variations in agronomic traits such as dwarfism, high sterility, heading date or grain weight. Most of the mutants were basically regular and consistent in R2 and relatively stable in R3. The efficiency and possible potential of screening resistant mutants in vitro and its use in resistant rice breeding were discussed. The procedure of screening resistant mutants in vitro was suggested.

利用植物细胞培养离体筛选生物技术,以稻瘟病菌粗毒素提取液作为外源胁迫因素,对水稻种子体细胞和花粉性细胞无性系,进行愈伤组织细胞培养抗性筛选或花药培养抗性筛选。获得JR19等抗稻瘟病突变体,其抗性反应及酯酶同工酶谱与原品种具有明显差异。R_2代部份抗病突变体在R_3代仍然保持对苗稻瘟的抗性。抗病突变体大多伴随着株高、熟期、育性或粒重等农艺性状的变异。多数突变体在R_2代性状基本整齐一致,R_3代则保持相对稳定不变。讨论了抗性突变体离体筛选效果及其在抗病育种上的应用。初步提出水稻抗性突变体离体筛选程序。

Abstract With the rapid increasing of world population and development of industriali-zation and urbanization, existing forest tree species will encounter significant envi-ronment stress different from that of natural selection. In order to improve the adaptab-ility of forest trees to the nonbiological stress caused by changing global environment,the foresters and plant physiologists have widely explored the genetic and physiologicalresponse of forest trees to different environment stress factors. The environrnent...

Abstract With the rapid increasing of world population and development of industriali-zation and urbanization, existing forest tree species will encounter significant envi-ronment stress different from that of natural selection. In order to improve the adaptab-ility of forest trees to the nonbiological stress caused by changing global environment,the foresters and plant physiologists have widely explored the genetic and physiologicalresponse of forest trees to different environment stress factors. The environrnent stressexerts tremendous influences on gene frequency and genetic structure through growthand propagation, and the community composition and structure change finally change.As a consequence understanding the pressure from different stresses and genetic differentiation related with plant responses is an important basis for effective resistance breeding. The feasibilrty of resistance breeding and its development in foreign countries aresummarized.

随着世界人口迅猛增长和工业化及大都市化进程的加快,原有的森林树种将会遇到与自然选择下有重大不同的环境胁迫压力。为保障人类生存环境和生活质量不再劣化,人类必须学会协助林木去更好更快地适应所遇到的各种随人类社会现代化而加剧和新出现的环境胁迫因素。低质量立地的造林利用技术和抗逆性育种就是摆在当代林学家面前的两大艰巨研究命题。为吸收国际先进经验来推动我国林木抗逆性育种事业,作者对近些年来国际林学界在这一领域取得的研究进展作了综述。

The main danger of pollution is to plant population evolution.Mutation is the materical of evolution,choice is measure and isolation is condition.The genes controlling the resistance properties are not the same due to different kinds of species and pollutants,while not excluding the situation that plants have resistance to some two or more pollutants simultaneously which is called coordinated resistance.Aside from degeneration,genetic information will be also if plants are polluted.Within the resistance population,the...

The main danger of pollution is to plant population evolution.Mutation is the materical of evolution,choice is measure and isolation is condition.The genes controlling the resistance properties are not the same due to different kinds of species and pollutants,while not excluding the situation that plants have resistance to some two or more pollutants simultaneously which is called coordinated resistance.Aside from degeneration,genetic information will be also if plants are polluted.Within the resistance population,the species remain monotonous and the adaptability along with the resistance to dangerous factors of other environment are reduced.That is price for adaptability.The research of pollution evolution biology aims to learn the effect of pollution on the level of species as well as establish theoretical basis for the selection and cultivation of resistance species.

污染胁迫的最显著效应是消除敏感物种或个体,导致植物居群进化。突变是进化的原料,选择是进化的手段,隔离是进化的条件。控制抗性性状的基因因物种及污染物的种类不同而异,但也会出现植物同时具有对某两种或几种污染物的抗性,即所谓协同抗性;污染除使植物衰退外,还可能导致一些遗传信息丧失,使抗性种群内物种单一,降低其适合度,对其它环境胁迫因素的抵抗力下降,即所谓适应代价。

 
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