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  白三叶叶片
    The ultrastructure of chloroplast of mesphyll cell of white clover leaves showed that in the condition of Zn deficiency, with the increasing rate of applied N, the inner structure of chloroplast ruined, in which the number of the grana and grana lamellae as well as stroma lamellae decreased and disintegrated, which resulted in the declination of photosynthesis capacity of chloroplast.
    白三叶叶片超显微结构表明,低锌条件下,随供氮水平增加,叶绿体结构变差,基粒及基粒片层、基质片层数量下降甚至解体,光合能力显著下降。
短句来源
  白三叶叶片
    The ultrastructure of chloroplast of mesphyll cell of white clover leaves showed that in the condition of Zn deficiency, with the increasing rate of applied N, the inner structure of chloroplast ruined, in which the number of the grana and grana lamellae as well as stroma lamellae decreased and disintegrated, which resulted in the declination of photosynthesis capacity of chloroplast.
    白三叶叶片超显微结构表明,低锌条件下,随供氮水平增加,叶绿体结构变差,基粒及基粒片层、基质片层数量下降甚至解体,光合能力显著下降。
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  “white clover leaves”译为未确定词的双语例句
    Effect of the Interaction Between N and Zn on Active Oxygen Metabolism and Chloroplast Ultrastructure of White Clover Leaves
    氮锌交互作用对白三叶草叶片活性氧代谢和叶绿体超微结构的影响
短句来源
    Both types of CuZn SOD and Mn SOD were detected and five isozyme bands found by polyacrylamide gel electrophoretic analysis in the SOD crude etract of white clover leaves with results showing that, the fourth band of which with the morbility of 0 7187 is Mn SOD and others are CuZn SOD.
    其同工酶谱带共有5条,其中迁移率为07187的第4条谱带是MnSOD,其余都是CuZnSOD。
短句来源
    The Compound Effects of N and Zn on Chloroplast Ultrastructure of White Clover Leaves
    氮锌复合作用对白三叶叶片叶绿体超微结构的影响
短句来源
    Sand culture experiment were carried out to investigate the compound effects of N and Zn on chloroplast ultrastructure of white clover leaves.
    在砂培条件下,研究了不同水平氮锌配施对白三叶生长、叶片叶绿素含量和叶绿体超微结构的影响。
短句来源
    Sand culture experiment was carried out to study the effect of interaction between N and Zn on active oxygen metabolism and chloroplast ultrastructure of white clover leaves.
    在砂培条件下,研究了不同水平氮锌配施对白三叶草叶片活性氧代谢和叶绿体超微结构的影响。
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  white clover leaves
Various reagents which prevent enzyme inhibition by phenolic compounds were tested in attempts to improve the medium used to extract the Li-controlled enzyme activities from white clover leaves.
      
The epitope tagged δ-zein is relatively stable in white clover leaves and in the highest expressing plants, its accumulation increased with increasing leaf age from 0.3 (youngest leaves) to 1.3% (oldest leaves) of total water-soluble protein.
      
N-terminal sequencing of the modified δ-zein from transgenic plants revealed that the protein is processed in white clover leaves as in maize seeds.
      
CO2 uptake by white clover leaves at different temperatures and light intensities.
      
CO2 uptake was measured in a closed system in which three to five white clover leaves were sealed inside a Lucite chamber.
      


A study was made to determine some characteristics of superoxide dismutase(SOD) in white clover(Trifolium repens L. cv. Louisiana K 57114 ). Both types of CuZn SOD and Mn SOD were detected and five isozyme bands found by polyacrylamide gel electrophoretic analysis in the SOD crude etract of white clover leaves with results showing that, the fourth band of which with the morbility of 0 7187 is Mn SOD and others are CuZn SOD. The test on thermal stability of the SOD crude extract indicated that,...

A study was made to determine some characteristics of superoxide dismutase(SOD) in white clover(Trifolium repens L. cv. Louisiana K 57114 ). Both types of CuZn SOD and Mn SOD were detected and five isozyme bands found by polyacrylamide gel electrophoretic analysis in the SOD crude etract of white clover leaves with results showing that, the fourth band of which with the morbility of 0 7187 is Mn SOD and others are CuZn SOD. The test on thermal stability of the SOD crude extract indicated that, when incubated for 15 min in water bath, the catalytic activity half inhibitory temperature is around 63℃; When incubated under constant temperature of 60℃ in water bath, its half life of catalytic activity is about 37 7min. SDS, a denaturant , results in loss of catalytic activities of the CuZn SOD of the first and second electrophoretic bands and the Mn SOD of the fourth band, but little change of the CuZn SOD of the third and fifth bands. When treated with β mercaptoethenol, the first, second and third bands disappear, while the fourth band widens and another new band with the morbility of 0 5312 presents and the fifth band maintains. However, when treated with both chemicals of SDS and β mercaptoethenol, all electrophoretic bands disappear except the fifth one. When exposed to 8 0mol/L urea, the Mn SOD inactivates, while CuZn SODs are little affected.

白三叶叶片超氧化物歧化酶(SOD)粗酶提取液中既含有CuZnSOD,又含有MnSOD;其同工酶谱带共有5条,其中迁移率为07187的第4条谱带是MnSOD,其余都是CuZnSOD。粗酶液具有较高的热稳定性,水浴中保温15min处理时,活性半抑制温度约为63℃;粗酶液在恒温水浴中保温处理,60℃条件下的活性半衰期约为377min。在变性剂SDS作用下,第1,2条CuZnSOD活性谱带与第4条MnSOD活性谱带活力丧失,而第3,5条CuZnSOD活性谱带活性变化较小;在β巯基乙醇作用下,第1,2,3条CuZnSOD活性谱带全部消失,而第4条MnSOD活性谱带变宽,并出现了迁移率为05312的新活性谱带,第5条CuZnSOD活性谱带则仍然保留;在8mol/L脲存在时,MnSOD活性谱带消失,CuZnSOD活性谱带几乎不受影响;在SOS和β巯基乙醇的共同作用下,除第5条活性谱带外,其余SOD同工酶谱带几乎全部消失。

Sand culture experiment were carried out to investigate the compound effects of N and Zn on chloroplast ultrastructure of white clover leaves. The main findings showed that the dry matter weight, chlorophyll content of leaves significantly decrased with the increased N rate in Zn deficiency. Therefore, N and Zn combined application showed antagonism effect in the condition of Zn deficiency. However, in the condition of Zn sufficiency, the dry matter weight, chlorophyll content of leaves were...

Sand culture experiment were carried out to investigate the compound effects of N and Zn on chloroplast ultrastructure of white clover leaves. The main findings showed that the dry matter weight, chlorophyll content of leaves significantly decrased with the increased N rate in Zn deficiency. Therefore, N and Zn combined application showed antagonism effect in the condition of Zn deficiency. However, in the condition of Zn sufficiency, the dry matter weight, chlorophyll content of leaves were higher in middle N rate than in high and low N rate. Consequently, N and Zn combined application showed synergism effect. Nevertheless, when high amount of N supply, the dry matter weight, chlorophyll content of leaves significantly decrased compared with middle and low N rate. Therefore N and Zn combined application showed antagonism effect. The ultrastructure of chloroplast of mesphyll cell of white clover leaves showed that in the condition of Zn deficiency, with the increasing rate of applied N, the inner structure of chloroplast ruined, in which the number of the grana and grana lamellae as well as stroma lamellae decreased and disintegrated, which resulted in the declination of photosynthesis capacity of chloroplast. In the condition of sufficient supply of Zn, the number of the grana, grana lamellae and stroma lamellae as well as the order of the combination of them in chloroplast were the highest at middle rate of N applied. However, the volume of chloroplast reduced and the system of lamellae swelled and couldn'n form grana when high rate of applied N. The changes of ultrastructure of chloroplast were correspondence with the changes of chlorophyll content and dry matter weight.

在砂培条件下,研究了不同水平氮锌配施对白三叶生长、叶片叶绿素含量和叶绿体超微结构的影响。结果表明,在缺锌条件下,随供氮水平增加,植株干物重、叶片叶绿素含量显著下降,氮锌配施表现为拮抗效应。在足量供锌条件下,中量供氮,植株干物重、叶片叶绿素含量高于低量供氮,氮锌配施表现为协同效应;与低水平供氮相比,当高水平供氮时,白三叶各组分干物重、叶片叶绿素含量显著下降,氮锌配施表现为拮抗效应。白三叶叶片超显微结构表明,低锌条件下,随供氮水平增加,叶绿体结构变差,基粒及基粒片层、基质片层数量下降甚至解体,光合能力显著下降。足量供锌时,以中量供氮叶绿体基粒及基粒片层、基质片层数量最多,内部结构有序性最高,光合能力最强。叶绿体超显微结构变化与白三叶干物重、叶绿素含量变化趋势相一致。

Sand culture experiment was carried out to study the effect of interaction between N and Zn on active oxygen metabolism and chloroplast ultrastructure of white clover leaves.The main results indicated that the dry matter weight,the content of chlorophyll,SOD and carotinoid of leaves significantly decreased and MDA content of leaves remarkably increased with the increase of N rate;N and Zn combined application showed antagonism effect in the condition with deficient Zn,while,in the condition...

Sand culture experiment was carried out to study the effect of interaction between N and Zn on active oxygen metabolism and chloroplast ultrastructure of white clover leaves.The main results indicated that the dry matter weight,the content of chlorophyll,SOD and carotinoid of leaves significantly decreased and MDA content of leaves remarkably increased with the increase of N rate;N and Zn combined application showed antagonism effect in the condition with deficient Zn,while,in the condition with sufficient Zn,the dry matter weight,the content of chlorophyll,SOD and carotinoid of leaves were higher and MDA content of leaves was lower at moderate N rate than those at high and low N rates,suggesting that N and Zn combined application showed synergism effect;at high amount of N supply,the dry matter weight,the content of chlorophyll,SOD and carotinoid of leaves significantly decreased and MDA content of leaves remarkably increased compared with those at moderate and low N rate,implying that N and Zn combined application showed antagonism effect.The chloroplast ultrastructure of mesophyll cell of white clover leaves showed that in the condition of Zn deficiency,with the increasing rate of applied N,the inner structure of chloroplast ruined,in which the number of the grana and grana lamellae as well as stroma lamellae decreased and disintegrated,which resulted in the low photosynthesis capacity of chloroplast.In the condition with sufficient supply of Zn,the numbers of the grana,grana lamellae and stroma lamellae as well as the order of the combination of them in chloroplast were the highest at moderate rate of N application,the volume of chloroplast reduced and the system of lamellae swelled and couldn't form grana at high rate of N application.The change of chloroplast ultrastructure was correspondent with that of chlorophyll,SOD and carotinoid content.

在砂培条件下,研究了不同水平氮锌配施对白三叶草叶片活性氧代谢和叶绿体超微结构的影响。结果表明,在缺锌条件下,随氮水平增加,植株干物重、叶片叶绿素、SOD、类胡萝卜素含量显著下降,MDA含量则明显增加,即白三叶草叶片光合作用和清除活性氧的能力显著下降,氮锌配施在缺锌条件下表现为拮抗效应。在足量供锌条件下,中量供氮,植株干物重、叶片叶绿素、SOD、葫萝卜素含量高于低量供氮,MDA含量则相反,氮锌配施表现为协同效应;与中低水平供氮相比,当高水平供氮时,各组分干物重、叶片叶绿素、SOD、类胡萝卜素含量等显著下降,MDA含量显著增加,氮锌配施表现为拮抗效应。叶片超显微结构表明,低锌条件下,随供氮水平增加,叶绿体结构变差,基粒及基粒片层、基质片层数量下降甚至解体,光合能力显著下降;足量供锌时,以中量供氮叶绿体基粒及基粒片层、基质片层数量最多,内部结构有序性最高,光合能力最强。叶绿体超显微结构变化与叶绿素、SOD、类胡萝卜素含量变化趋势相一致。

 
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