胁迫的

The OsCMO contains 10 exons and 9 introns and encodes a protein with 410 amino acids,which shows 62﹪, 51﹪, 51﹪, 51﹪ and 50﹪ identities in amino acids to CMOs from Arabidopsis thaliana,Atriplex hortensis, Amaranthus tricolor, Suaeda liaotungensis and Beta vulgaris respectively. Semi-quantitative RT-PCR assay revealed OsCMO was significantly up-regulated in the rice seedlings under salt, cold and drought stresses. It suggests that OsCMO might play an important role in rice responses to abiotic stresses.

该基因含有10个外显子和9个内含子，其开放阅读框编码一条长为410个氨基酸残基的多肽，与拟南芥、山菠菜、苋、碱蓬和甜菜等植物的胆碱单加氧酶的氨基酸序列的一致性50﹪～62﹪。mRNA分析表明OsCMO基因在水稻幼苗组织中的表达受高盐、低温和干旱等胁迫的上调诱导表达，表明该基因可能在抵御非生物胁迫中发挥重要作用。

Several groups of cis-acting elements are among the best characterized in the context of abiotic and biotic defense mechanisms.

参与环境胁迫的基因启动子部分的顺式作用元件得到广泛的研究，很多种类的顺式作用元件参与环境胁迫因子的应答。

Results indicated that the variation was significant from treatment to treatment. S-deficiency caused bulging chloroplasts, loosening and dishevelled grana lamella, reducing organelle, and damaged chondriosome in mesophyll cells of the leaves, and empty cells of the roots, while S-excess, however, led to densification, condensation and randomization of grana lamella of the chloroplasts of the leaves, and separation of cytoplasms from walls of the cells of the roots.

结果表明，受S素营养胁迫的水稻，其根系及叶片的超微结构均发生了显著的变化：低S胁迫会造成水稻叶片叶肉细胞内的叶绿体结构肿胀，基粒片层松驰、散乱，细胞器减少，线粒体结构被破坏，根系细胞内几乎没有内含物；S浓度高则会使叶片叶绿体基粒片层致密、浓缩，无规则化，根系细胞发生质壁分离。

The finding of this two ecotypes of Sedum alfredii Hance is of importance for understanding physiology, biochemical and microevolution mechanisms of Zn tolerance and hyperaccumulation of plants.

这两种生态型东南景天的发现，为今后探讨植物耐高Zn胁迫和超积累Zn的生理生化机制和植物抗高锌胁迫的微进化过程提供了非常有价值的材料。

This experiment adopts artificial simulation research approaches, namely using the standardized moisture stress conditions with hypertonic solution to immerge rubber tree seeds during germination to elementarily select out some rubber seedlings, which could stand the high-osmosis stress. The germination characteristic of the rubber tree seed under high-osmosis stress was observed and the phenomena of growth and dynamic changes of physiology and biochemistry were determined and analysed, and then its ability of drought-resistance was valued.

本试验采用人工模拟研究方法，利用高渗溶液提供标准化的水分逆境条件，对催芽过程中的橡胶树种子进行人工胁迫处理，并筛选出耐高渗胁迫的橡胶籽苗，观测种子的萌发特性和选出籽苗的生理生化特性并对其抗旱性作出评价。

After pretreatment with TFP, although the conductance of cultivate solution of strawberry seedling under NaCl stress was not increased, growth was inhibited obviously by TFP, while the leaf relative electric conductivity in strawberry increased, leaf holding ability was reduced. The inhibiting response increased with the concentration of TFP increasing. On the contrary, conductance in cultivate solution was increased by Ca(NC?3)2 treatment, but the leaf relative electric condu

用Ca(NO_3)_2和TFP培养处理NaCl胁迫的草莓幼苗，发现TFP培养处理虽然不增加培养液的电导值，但明显抑制盐胁迫草莓幼苗的生长，增加了叶片膜透性，降低了叶片保水力，抑制作用随TFP浓度的增加而增大；而Ca(NO_3)_2处理虽然增加了培养液的电导值，但降低了幼苗叶片膜透性，提高了叶片保水力，因而减轻了NaCl

With the seedlings of model plant Arabidopsis thaliana and the polycyclic aromatic hydrocarbon fluoranthene as test materials,this paper studied the physiological responses of plants to polycyclic aromatic hydrocarbons from the aspects of antioxidases and membrane protection system that are tightly related to abiotic stresses.

选用模式植物拟南芥为材料，以四环的多环芳烃荧蒽为研究对象，从植物对非生物胁迫响应紧密相关的抗氧化酶及膜保护系统的变化入手，研究了植物对多环芳烃胁迫的生理响应。

The changes of some morphological, physiological and biochemical indexes of the Zizania plant and the Pb2+ residues in Zizania galls were investigated. The results showed that contents of soluble protein, protective enzyme activities, area and chlorophyll content of functional leaves and net photosynthetic rate ascended under low concentration of Pb2+ treatment and descended along with the increase of Pb2+ concentrations, while the content of proline ascended all along.

在不同栽培介质中对重金属Pb2+胁迫的反应，以茭白的单季茭品种'蒋墅茭'和双季茭品种'葑红早'为试材，采用苇末基质和土壤两种栽培介质进行不同浓度Pb2+的胁迫处理，测定了其生长过程中部分形态、生理指标及其产品器官中Pb2+残留含量的变化。

Simulated regression analysis showed that the exponential increase of MDA content, plasmamembrane permeability, auto-oxidation rate of the organ and O2 produc-tion rate and parabolic decrease of SOD activity and GSH content as well as the logarithmic decrease of CAT activity in the stressed leaves were found with the decrease of soil water content....

经回归模拟显示，蔗叶MDA含量、质膜差别透性、O_2产生速率和组织自动氧化速率均随土壤含水量的降低呈指数增加，SOD活性和GSH含量呈抛物线变化，而CAT活性呈对数降低；逐步回归分析定量地指出了水分胁迫下蔗叶SOD和CAT在清除活性氧、防止膜脂过氧化和质膜破坏中的协同作用关系，且受O_2产生的影响；经卡方测验证实，该回归模型各参数与大田干旱胁迫的实际结果相符。

The plumules of Phragmites australis growing in the constructed wetland test pool with high-concentration livestock wastewater and clean water were collected,and the total DNA was extracted for RAPD analysis to explore the genetic variation of Phragmites australis under contamination stress of high-concentration livestock wastewater.

为了探讨芦苇在高浓度畜禽废水污染胁迫下遗传特性的变化，将人工湿地试验池中生长的，受高浓度畜禽废水长期污染胁迫的和未受到污染的供试芦苇材料各20个单株幼芽分别混合提取DNA，采用RAPD分子标记技术在160个随机引物中进行筛选，找到3个能够扩增出差异且重复性较好的RAPD引物：S74、S516和S14。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。