胁迫的

These indicated that under salt stress the expression up-regulations of ssVHA-H and ssVHA-c genes and the increase of the activity of V-H(superscript +)-ATPase provide the proton driving force for sequestrating Na(superscript +) in vacuoles.

这些结果表明盐胁迫下H和c亚基基因上调及V-H-ATPase活性的增加为Na 区隔化到液泡中提供了质子驱动力。

Research results indicated that the underground biomass changes of three species differed obviously under different traffic treatment. Poa pratensis and Zoysia japonica underground biomass increased at the light traffic then declined. 'Barlexas' Tall fescue decreased with increasing traffic stress. Obvious root shallowing phenomenon is displayed through the increase of roots percent in surface layer and decline in deep layer. Moreover, traffic made the soil density and hardness increase.

结果表明：践踏胁迫下，3种草坪草地下生物量变化表现出较大差异，草地早熟禾和日本结缕草先增加后下降，高羊茅一直呈下降趋势；3种草坪草表层根系（0~5cm）所占比重明显增加，深层根系所占比重减小，根系的表层化现象明显；研究还表明，践踏使表层土壤容重和硬度增加，物理性质恶化。

Comparing the landscape types of 1995 with that of 2005, we find out that:①the natural arbors are decreasing, with patches more fragmentation, size more odds, shapes more complex;②the area of natural shrubberies is increasing, with patches less fragmentation, shapes more simple and formulary ,the size of patches more even;③the area of natural grasses is increasing, with patches less fragmentation, shapes of patches more odds;④the area of timbers is increasing, with patches more dominance in landscape, more connectivity;⑤the area of Eucalyptus increases, with patches less fragmentation, shapes of patches more complex , more convergence, more connectivity;⑥the area of orchards is increasing, more connectivity;⑦the patches of the rubber is becoming more assemble, more connectivity, more formulary;⑧the area of plowland increases;⑨the area of reservoirs, rivers and ponds increases, with patches more assemble;⑩the area of cities decreases, with patches more dispersing, with shape more complexthe area of countries increases, with patches less connectivity, more dispersing, with shape more complex; the patches of the rest lands are more dispersing, with shape more complex;(3)In the process of economic development in the upper reaches of the Changhuajiang river watershed, a series of the ecological environment problems have appeared because a lot of landscape function broke off, and the connection of human landscape with natural landscape decreased, which aroused by the fragmentation of natural and semi-nature landscapes increased, the stability of the landscape structure decreased, as well as stress of human disturbance, resource and environment upon the landscape increased gradually.

3昌化江上游流域在经济发展进程中，自然与半自然景观破碎度增加，自然景观结构稳定性下降，人为干扰、资源和环境对景观胁迫逐渐增大，中断了许多生态过程，导致城市等人文景观与自然景观连接度很差，产生了一系列的生态环境问题。

Tom is exceedingly polite, yet there is something vaguely threatening about him that obviously unnerves Slughorn.

布朗说道：&汤姆非常有礼貌，而在他身上那种含糊不清的胁迫很明显地使斯拉格霍恩感到不安。&

Pot and test-pit experiments were conducted to study the compensation effect of rice under water stress.

本文通过盆栽和测坑试验研究了水稻的水分胁迫补偿效应。

Selecting identification index of low-potassium tolerance The correlation between the grain weight per ear stress index and sensitive character stress index is appraised in detail by the numbers based on the principle of highly actuating, simply manipulating, early identification and saving field.

根据穗部敏感性状和穗粒重之间胁迫指数的关系，可以分为不敏感和敏感两类，敏感类型有穗粒数、百粒重、穗轴重三种，各类型存在明显差别。

Measurement of fluorescence of PS Ⅱ Reaction Center indicated F/F and F/F decreased in both alfalfas under drought stress.

3对叶绿素荧光参数的研究表明：干旱胁迫下两种紫花苜蓿PSⅡ反应中心光化学效率F(下标 v/F、PSⅡ潜在活性F

The results showed that drought stress resulted in reduction of relative water content, protein content, chlorophyll content, corticoid content, net photosynthetic rate, transpiration rate, Fm, Fv/Fm, Fv/Fo and accumulation of proline content, SOD activity, POD activity, MDA content, water use efficiency.

通过测定不同处理条件下小麦代换系及其亲本叶片的生理、生化指标，结果表明干旱胁迫导致相对含水量、蛋白质含量、叶绿素及类胡萝卜素含量、光合速率、蒸腾速率降低，最大荧光、PSⅡ原初光能转换效率以及PSⅡ潜在活性降低，却导致细胞膜透性增大、SOD和POD活性增强、脯氨酸和丙二醛含量增加、水分利用效率增加。

The effects of different concentrations of Cr(superscript 6+)(0, 10, 20, 50, 100 mg/L K2Cr2O7) on the content of Pro, malondialdehyde, membrane permeability, activities of protective enzyme SOD and POD in roots and epicotyls of maize seedlings were studied.

研究了不同浓度(0， 10， 20， 50， 100mg/L K2Cr2O7)Cr(上标 6+)胁迫对玉米幼苗根和上胚轴中脯氨酸和丙二醛含量、细胞膜透性、超氧化物歧化酶及过氧化物酶等保护酶活性的影响。

Numerous studies have shown that transcription factor ERF plays a crucial role in regulating plant genes that response to environmental stress.

大量研究表明植物中ERF类转录因子广泛参与外界环境胁迫应答基因表达的调控。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。