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sps activity
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  sps活性
     The result indicated that both the soluble sugar content and SPS activity of fruit and leaves of cucumber increased when application rate of K_2O was in 300—900 kg/ha scope. However, when 1200 kg/ha K_2O was applied,both of them showed a drop tendency.
     结果表明,在施K2O 3009~00 kg/hm2范围内,随着用量的增加,黄瓜叶片和果实中可溶性糖含量与SPS活性均逐渐升高,而K2O用量达1200 kg/hm2时,二者趋于下降。
短句来源
     Accumulation and components of sugars were affected evidently by AI and NI in muskmelon fruit, but the action of SS was weak. Sucrose accumulation accorded with the increase of SPS activity in sarcocarp of Elizabeth during ripe stage.
     (2)AI、NI的活性变化对2种甜瓜果实中糖的积累和构成具有重要影响,SS对2种甜瓜果实中糖积累的作用较小,SPS活性升高与成熟期伊丽莎白果实中蔗糖的积累相一致。
短句来源
     Throughout the whole fruit development, no significant correlation existed among the contents of three kinds of sugar and sucrose phosphate synthase (SPS) activity, suggesting that the accumulation and metabolism of sugar in the tomato fruit were controlled by the SS and invertase activity mainly, not by SPS activity.
     在果实整个发育期,3种糖的含量均与蔗糖磷酸合成酶(SPS)无显著相关,说明番茄果实中各种糖的积累与代谢主要受SS和转化酶活性的调控,与SPS活性关系不大。
短句来源
     SS and SPS activity were affected markedly at jointing, tasseling and booting.
     对SS和SPS活性影响最大的三个时期分别为:拔节期、吐丝期和孕穗期;
短句来源
     2. At the mid- and late stage of inflation, SS (synthetic direction) activity rose again immediately while SPS activity decreasing rapidly.
     2、果实膨大中后期,SPS活性迅速降低时,SS合成方向的活性则迅速上升;
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  “sps activity”译为未确定词的双语例句
     Sucrose phosphate synthase(SPS) is one of the key enzymes controlling biosynthesis of sucrose in higher plants. The level of SPS activity to be mainly regulated, at the enzyme level, by allosteric and covalent phosphorylation modifications.
     蔗糖磷酸合成酶(sucrose phosphate synthase,SPS)是高等植物体内控制蔗糖合成的关键酶之一,它主要通过异构调节和磷酸化修饰在酶水平调节蔗糖合成。
短句来源
     The relationship between SPS activity and nitrogen used quantity is parabolic shape,SPS activity of roots and leaves decreased when nitrogen concentration reached12.8mmol NH +4 /L.
     蔗糖磷酸合成酶活性与施氮量呈二次抛物线型关系,当施氮量达12.8mmolNH+4/L时,根和叶片中的蔗糖磷酸合成酶活性有所降低。
短句来源
     2. SPS activity was higher in leaf than in fibre, which was showed that SPS was mainly concerned with sucrose synthsis in leaf.
     2.棉花叶片中SPS酶的活性要比棉纤维中的活性高,这说明SPS参与合成蔗糖主要发生在叶片中;
短句来源
     SA regulats sugar metabolism probably through influencing the SPS activity.
     SA对糖代谢的调节可能主要是通过对SPS活性的影响而实现的。
短句来源
     SS and SPS activity were decreased mostly by drought at florescence,next were grain-filling and branch.
     蔗糖合成酶活性和磷酸蔗糖合成酶活性以开花期干旱处理降低幅度最大,其次是鼓粒期和分枝期;
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  相似匹配句对
     The activity of E.
     淀粉酶活性在50℃,pH 6.0条件下最高.
短句来源
     SPS activity changed as the same as photosynthesis rate.
     磷酸蔗糖合成酶活性与光合速率变化基本一致。
短句来源
     SS and SPS activity were affected markedly at jointing, tasseling and booting.
     对SS和SPS活性影响最大的三个时期分别为:拔节期、吐丝期和孕穗期;
短句来源
     PPO activity.
     PPO活性(0.176)与膨胀势相关未达显著水平。
短句来源
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  sps activity
Although the SPS/Susy ratio was low in these leaves the extractable SPS activity did not change significantly among leaves of different age.
      
High SPS activity in cold long days leading to hyper accumulation of Suc appears to be among the features that permit D.
      
The highest SPS activity increase was observed after 21 days of cold-acclimation under long day conditions.
      
Although SPS activity did not display an endogenous rhythm of activity in continuous light, activation of SPS at the end of the dark period was observed in D.
      
The objectives of this study were to investigate a possible indirect light regulation of SPS activity and the effect of cold and day length on transcriptional and protein level of SPS in D.
      
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This paper deals with photosynthate supply and export from the second trifoliate of two soybean varieties(Glycine max (L.) Merr. Shuxie No.1 and Xuzhou 424). There were four stages: (1) the importing stager;(2) the assimilate supply increasing stage; (3) the lasting stage with higher photosynthate supply;(4) the decreasing stage. The third stage was considered as the most important one for leaf function over its life, in which the specific leaf weight and respiration rate were stable. Export oF ~(14)C-labelled...

This paper deals with photosynthate supply and export from the second trifoliate of two soybean varieties(Glycine max (L.) Merr. Shuxie No.1 and Xuzhou 424). There were four stages: (1) the importing stager;(2) the assimilate supply increasing stage; (3) the lasting stage with higher photosynthate supply;(4) the decreasing stage. The third stage was considered as the most important one for leaf function over its life, in which the specific leaf weight and respiration rate were stable. Export oF ~(14)C-labelled assimilate evidently coincided with changes of SPS activity and assimilate supply. There was an extremely significant positive correlation between the assimilate supply and export rate. SPS played an important role in the control of photosynthate export.

本文从碳素同化、消耗与积累的角度分析了苏协一号和徐州424两个栽培大豆品种第二复叶一生中同化物潜在供应能力及~(14)C同化物输出速率的变化。在同化物供应高值期,光合产物的潜在供应能力最大,比叶重和呼吸速率相当稳定,~(14)C光合产物输出速率与潜在供应能力间呈极显著线性相关。测定结果还表明,磷酸蔗糖合成酶(SPS)对叶片中光合产物输出有重要调节作用。

Sucrose phosphate synthetase (EC 2.4.1.14)is one of the key enzymes in sucrose metabolism.The activity of SPS directly affects the partitionof photosynthetic products, such as statch andsucrose. The higher activity of this enzyme,the more the sucrose accumulates in leaves.The activity of SPS can be regulated by some fac-tors. We have partially purified SPS from rice lea-ves by ammonium sulfate fractionation, DEAE-cellulose (DE52) chromatography (Fig. 1) andSephadex G--200...

Sucrose phosphate synthetase (EC 2.4.1.14)is one of the key enzymes in sucrose metabolism.The activity of SPS directly affects the partitionof photosynthetic products, such as statch andsucrose. The higher activity of this enzyme,the more the sucrose accumulates in leaves.The activity of SPS can be regulated by some fac-tors. We have partially purified SPS from rice lea-ves by ammonium sulfate fractionation, DEAE-cellulose (DE52) chromatography (Fig. 1) andSephadex G--200 chromatography (Fig. 2). Theoptimum pH of SPS is about 7.0. UTP UDP andATP can strongly inhibit its activity. UTP is acompetitive inhibitor with UDPG. Mg~(++) canstimulate SPS activity. G6P has no effect. Thelower concentration of Pi has no apparent effect.I_(0.5) (Pi) is about 40 mmol/L (Fig. 3). Saturationkinctic curves of two substrates F6P and UDPGare hyperbolic (Fig. 5) and sigmoid (Fig. 6),respectively. Thc kinetic coefficientS are K_m(F6P)=0.93 mmol/L; Km (UDPG) = 20mmol/L; Vm(F6P) =83.3 nmol Suc, mg~(-1) Protein min~(-1); Vm(UDPG) =333 nmol Suc mg~(-1) Protein min~(-1);Hill (F6P) =1.0; Hill (UDPG) =1.4. Theexperiment concludes that the rice leaf SPS is aregulatory enzyme. The activity of SPS can beregulated by UTP, UDP, ATP, UDPG and otherfactors. The total activity of SS from ricc leafis equal to or higher than that of SPS.

水稻叶片粗提液经硫酸铰分部沉淀、DE 52纤维素及 Sephadex G—200柱层析,得到较纯的蔗糖磷酸合成酶。该酶的最适 PH约7.0;UTP,UDP,ATP能明显地抑制其酶活;UTP是该酶UDPG的竞争性抑制剂,Mg~(++)对它有促进作用;G6P则无影响。酶的两个底物F6P及UDPG的饱和动力学曲线分别为双曲线型和S型;K_m(F6P)=0.93 mmol/L;K_m(UDPG)=20.0 mmol/L;V_m(F6P)=83.3 nmol Suc mg~(-1)Protein min~(-1);V_m(UDPG)=333 nmol Suc mg~(-1)protein min~(-1);Hill(F6P)=1.0,Hill(UDPG)=1.4。水稻叶片蔗糖磷酸合成酶的活性受 ATP,UTP,UDP,UDPG等因素的调节。水稻叶片中蔗糖合成酶的总活力大于或等于蔗糖磷酸合成酶。

Sugar contents and its related metabolic enzyme activities were compared in developing fruits of C.melo. L. var. makuwa Makino Shitiaoleng (sweet melo) and C. melo. L. var conomon Makino Huapi shaogua (non-sweet melon). Obvious transition of sucrose accumulation was observed in developing fruis of sweet melo,accompanied by loss of invertase activity, and increase of sucrose phosphate synthase (SPS) activity. However,no transition of sugar accumulation was found in non-sweet melon in harmoney...

Sugar contents and its related metabolic enzyme activities were compared in developing fruits of C.melo. L. var. makuwa Makino Shitiaoleng (sweet melo) and C. melo. L. var conomon Makino Huapi shaogua (non-sweet melon). Obvious transition of sucrose accumulation was observed in developing fruis of sweet melo,accompanied by loss of invertase activity, and increase of sucrose phosphate synthase (SPS) activity. However,no transition of sugar accumulation was found in non-sweet melon in harmoney with high invertase activity at all stages through deveopment. It was also worthwhile to be noted that SPS activity was relatively lower during ripening in non-sweet melon. It was propsed that loss of invertase activity and increase of SPS activity might be a prerequisite for sucrose accumulation.

本文比较了普通甜瓜变种和越瓜变种果实发育过程中糖分转化与有关代谢酶活性变化。研究结果表明:普通甜瓜变种十条棱果实发育过程中有一明显的蔗糖积累的转折点,随着果实成熟,蔗糖含量升高,转化酶活性下降,蔗糖磷酸合成酶活性增高。而越瓜变种花皮梢瓜果实发育过程中无明显的蔗糖积累,转化酶活性始终处于较高水平,蔗糖磷酸合成酶活性相对较低。

 
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