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active oxygen scavenging enzymes
相关语句
  活性氧清除酶的
     DIURNAL CHANGES OF PHOTOSYNTHESIS AND ACTIVE OXYGEN SCAVENGING ENZYMES IN SOYBEAN LEAVES UNDER FIELD CONDITIONS
     田间大豆叶片光合作用与活性氧清除酶的日变化
短句来源
     Moreover, compared with urea, CRNF increased the activities of active oxygen scavenging enzymes, such as SOD and POD, and decreased the accumulation amount of MDA in the functional leaves during rice leaf aging.
     此外,施用控释氮肥能显著地提高生育中、后期功能叶中的SOD、POD等活性氧清除酶的活性,降低功能叶中的丙二醛含量。
短句来源
  “active oxygen scavenging enzymes”译为未确定词的双语例句
     The results indicated that these substances significantly reduced leaf stomatal conductance (Gs), photosynthesis (Pn) and transpiration (E), together with an increased activity of active oxygen scavenging enzymes such as peroxidase (POD) and superoxide dismutase (SOD) and an enhanced level of membrane peroxidation.
     队L)等抗病相关酶活性或含量并伴随着HZOZ,O:一等氧自由基及膜脂过氧化产物MDA含量的增加,而自毒物质的存在显著加剧了以上过程,并导致了根系汗一ATPase及液泡膜PP二e酶活性及含量也随着自毒物质肉桂酸浓度的增加而呈现逐渐下降趋势,最终导致其细胞膜结构的损伤。
短句来源
     The generation of active oxygen and the activities of active oxygen scavenging enzymes as well as the effect of light on active oxygen metabolism were studied in soybean during germination.
     本文研究了大豆萌发过程中活性氧的产生与清除,并探讨了光因子在活性氧代谢中的作用。
短句来源
     The results showed that the pepper plant height,stem diameter,leaf area,chlorophyll content,fresh weight of aboveground part and roots,and root vigor were higher in sterilized than in non-sterilized treatment,while the activities of superoxide dismutase(SOD) and peroxidase(POD) were declined,which indicated that soil sterilization improved plant haleness,but reduced the activities of active oxygen scavenging enzymes.
     结果表明,灭菌的连作土壤,辣椒的株高、茎粗、叶面积、叶绿素含量、地上部鲜重、根鲜重、根系活力等值均高于未灭菌土壤,并伴随着抗氧化酶如超氧化物歧化酶(SOD)和过氧化物酶(POD)的活性降低。
短句来源
     This study quantified the effect of CRNF on root morphological and physiological characteristics during late growth stages of hybrid rice,and lipid peroxidative products,active oxygen scavenging enzymes in root system during the root senescence process of hybrid rice.
     研究表明,施用控释氮肥,明显地增加杂交水稻生育后期的根干重、根长和根长密度,而根半径减小;
短句来源
  相似匹配句对
     Advance in Relationship between Active Oxygen, its Scavenging Enzymes and Tobacco Resistance
     活性氧及其清除酶类与烟草抗病性的关系研究进展
短句来源
     DIURNAL CHANGES OF PHOTOSYNTHESIS AND ACTIVE OXYGEN SCAVENGING ENZYMES IN SOYBEAN LEAVES UNDER FIELD CONDITIONS
     田间大豆叶片光合作用与活性氧清除酶的日变化
短句来源
     Studies on Flavonoids Scavenging Capacity on Active Oxygen Radicals
     黄酮类化合物清除活性氧自由基性能的研究
短句来源
     Scavenging effect of oridonin on active oxygen free radicals
     冬凌草甲素对活性氧自由基的清除作用(英文)
短句来源
     Scavenging effects of tetramethylpyrazine on active oxygen free radicals
     四甲吡嗪对活性氧自由基的清除作用(英文)
短句来源
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  active oxygen scavenging enzymes
Relationship between photosystem stoichiometries and changes in active oxygen scavenging enzymes in natural grown rice seedlings
      
The physiological measurements include gas exchange, chlorophyll fluorescence, pigments, active oxygen scavenging enzymes, and several proteins in the photosynthetic apparatus.
      


The generation of active oxygen and the activities of active oxygen scavenging enzymes as well as the effect of light on active oxygen metabolism were studied in soybean during germination. The O2 uptake, the rate of O2 production, and the level of H2O2 in imbibed seeds all increased at the beginning of germination, but all decreased after 4 days of imbibition. Gradual increases in activities of superoxide dismutase (SOD), peroxidase (POD) and ascorbate peroxidase (APX) were observed at the...

The generation of active oxygen and the activities of active oxygen scavenging enzymes as well as the effect of light on active oxygen metabolism were studied in soybean during germination. The O2 uptake, the rate of O2 production, and the level of H2O2 in imbibed seeds all increased at the beginning of germination, but all decreased after 4 days of imbibition. Gradual increases in activities of superoxide dismutase (SOD), peroxidase (POD) and ascorbate peroxidase (APX) were observed at the early stage of germination, then the activities of SOD, POD, and APX tended to be in a certain level with little alteration. A new band of SOD isoenzyme presented respectively on the 2nd and 3rd day of seed imbibition. There was about a 50-fold increase in catalase (CAT) activity at the early stage of germination, and then turned stable. Among the three H2O2-scavenging enzymes (CAT, POD and APX), the capacity of CAT for scavenging H2O2 was much higher than those of POD and APX. So it seems that CAT is the most important H2O2 scavenging enzyme during germination. Although the O2 uptake of seeds germinating under light was lower than that in the dark, the rate of O2 production and the H2O2 level under light were higher than those in the dark. The ratio of O2- production to total O2 uptake was 1.1 - 2.7% in seeds germinated under light, while this ratio was 0.9 - 1.3% in the dark. The activities of SOD and APX under light were higher than those in the dark, but the activities of POD and CAT had no distinct difference under light and dark.

本文研究了大豆萌发过程中活性氧的产生与清除,并探讨了光因子在活性氧代谢中的作用。大豆呼吸强度、O产生速率及H2O2水平都在吸水后第四天达到高峰,然后下降,三者的变化趋势同步。SOD、POD及APX的活性随萌发过程而逐渐增强,最后趋于平稳。SOD同工酶谱中分别于萌发的第二、第三天各出现一条新的酶带。CAT在萌发的初期猛增50倍左右,之后趋于稳定。在三种清除H2O2的酶(CAT、POD、APX)中,CAT清除H2O2的能力远远高于POD与APX,CAT可能是大豆萌发过程中最主要的H2O2清除酶。光萌发时呼吸强度低于暗中萌发,但O产生速率与H2O2水平高于暗萌发,光萌发时O的产生占总耗氧量的1.1—2.7%,而暗中萌发为0.9—1.3%。光条件下SOD、APX活性明显高于暗中萌发,而POD与CAT则在光和暗条件下相差不大。

The diurnal variations of photosynthesis and active oxygen scavenging enzyme sys-tem were inverstigated in leaves of well-watered soybean plants under field condltions. Amidday depression in net photosynthetic rate (Pn) and in stomatal conductance was ob-served on a summer sunny day, being accompanied by an increase in leaf temperature andin photorespiratory rate (Pr) as well as in Pr/Pn ratio. Intercellular CO2 concentrationdecreased before noon and increased in the afternoon. On a cloudy...

The diurnal variations of photosynthesis and active oxygen scavenging enzyme sys-tem were inverstigated in leaves of well-watered soybean plants under field condltions. Amidday depression in net photosynthetic rate (Pn) and in stomatal conductance was ob-served on a summer sunny day, being accompanied by an increase in leaf temperature andin photorespiratory rate (Pr) as well as in Pr/Pn ratio. Intercellular CO2 concentrationdecreased before noon and increased in the afternoon. On a cloudy day with maximum photon flux density below 1200 μmol· m-2· s-1,Pn and Pr were dependent uponlight intensity and Pr/Pn ratlo remalned constant over the day. The activit1es of superox-ide dismutase,catalase,glutathione reductase and ascorbate peroxidase in soybean leavesincreased during midday,showing a marked diurnal variations.The roles of active oxy-gen scavenging system and photorespiration in the protection of higher plants from thedamaging effects of excesslve light energy were discussed.

开花期大豆叶片光合速率(Pn)在晴天中午伴随气孔导度(Gs)下降而降低,而叶温(TL)、光呼吸速率(Pr)以及Pr/Pn比值在中午前后明显上升。胞间CO2浓度(Ci)在上午下降,之后则逐渐增加。在最高光量子通量密度(PFD)低于1.2mmol·m-2·s-1的多云天气,大豆叶片Pn与Pr的日变化依赖于PFD、Ci与Pr/Pn比值在一天中基本恒定。晴天与多云天气大豆叶片细胞活性氧清除系统的超氧物歧化酶(SOD)、过氧化氨酶(CAT)、谷胱甘肽还原酶(GR)与抗坏血酸过氧化物酶(ASA-POD)活性均出现明显的日变化,中午前后酶活性明显增加。文中讨论了大豆叶片细胞活性氧清除酶系统日变化的适应性意义。

Effects of different 1,2,4-trichlorobenzene (TCB) concentrations on membrane lipid peroxidation in soybean hypocotyls were studied with pot culture experiment. The results indicated that during the beginning (1st-3rd day) of 100-300μg·g-1TCB treatments, the accumulation of H2O2, membrane electrolytic leakages and tissue autooxidation rates in soybean hypocotyls all enhanced. During 1-6 d of TCB stress, activities of peroxidase (POD) gradually increased, activities of catalase (CAT) were increased first and decreased...

Effects of different 1,2,4-trichlorobenzene (TCB) concentrations on membrane lipid peroxidation in soybean hypocotyls were studied with pot culture experiment. The results indicated that during the beginning (1st-3rd day) of 100-300μg·g-1TCB treatments, the accumulation of H2O2, membrane electrolytic leakages and tissue autooxidation rates in soybean hypocotyls all enhanced. During 1-6 d of TCB stress, activities of peroxidase (POD) gradually increased, activities of catalase (CAT) were increased first and decreased afterwards.It may be suggested that injury effects of TCB stress on germinated soybean hypocotyls be achieved by excessive accumulation of active associated with the degradation of the active oxygen scavenging enzyme system.

以盆栽法研究了不同浓度1,2,4-三氯苯(TCB)胁迫对大豆下胚轴膜脂过氧化作用的影响。结果表明,100—300μg·g-1TCB胁迫初期(1—3d)促使萌发大豆下胚轴内过氧化氢(H2O2)的积累显著增加,同时伴随质膜电解质渗漏率和组织自动氧化速率升高,显示发生膜脂质过氧化作用。TCB胁迫1—6d使活性氧清除酶功能紊乱,其中过氧化物酶(POD)活性升高,过氧化氢酶(CAT)活性开始上升后转为下降。推测大豆下胚轴受TCB胁迫伤害过程中,活性氧代谢失衡造成的膜脂质过氧化起着重要作用。

 
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