谷氨酰胺在鸡营养中的研究进展     

刘明美  吕宗友  戎婧 《水禽世界》2011,(1):47-50

谷氨酰胺在动物的生命活动中有重要的作用,参与动物体内蛋白质、氨基酸、核酸、嘌呤,嘧啶核苷酸,NAD+以及氨基糖的代谢,能促进肠道细胞的增殖,并能提高机体的免疫力,在提高消化酶活性方面也有重要作用。本文综述了谷氨酰胺在鸡营养中的作用效果及机理,为谷氨酰胺在养鸡业中进一步运用奠定理论基础。  相似文献   

不同浓度葡萄糖和谷氨酰胺对BHK-21细胞凋亡的影响     

武发菊  尚勇良  安芳兰  董文教  宋玉霞  鲍士兵  陈苗苗  牟克斌  刘学荣 《动物医学进展》2011,32(3):51-55

研究葡萄糖和谷氨酰胺两种重要营养物质对BHK-21细胞凋亡的影响,在BHK-21细胞体外培养过程中,加入不同浓度的葡萄糖和谷氨酰胺,每隔24 h取样细胞计数,活性分析和细胞凋亡率的测定.结果发现,当葡萄糖浓度降至0 mmol/L～4 mmol/L,谷氨酰胺浓度降至0 mmol/L～1 mmol/L时,细胞生长速率降低,...  相似文献   

Na_2CO_3胁迫对碱地风毛菊苗期叶片和根系氮代谢的影响     

夏方山  董秋丽  董宽虎 《草原与草坪》2011,31(1):19-22

对碱地风毛菊苗期以Na2CO3进行胁迫处理,浓度为0、30、60、90、120、150和180 mmol/L,测定了盐胁迫下叶片和根系氮代谢过程的可溶性蛋白、硝酸还原酶、硝态氮及谷氨酰胺合成酶等指标。结果表明:在Na2CO3胁迫下,碱地风毛菊叶片和根系可溶性蛋白含量均在120 mmol/L处理下达到最大值,为6.76和6.75 mg/g.FW,且与对照差异显著(P<0.05);随Na2CO3浓度增大,叶片的硝酸还原酶活性下降,根系的先下降后升高,根系硝态氮含量先增加后下降,叶片谷氨酰胺合成酶活性变化不明显,与对照差异不显著,根系的呈上升趋势,与对照差异显著(P<0.05)。  相似文献   

谷氨酰胺和甘氨酰谷氨酰胺对断奶仔猪生长性能的影响     

杨玲媛  范志勇  肖勇  沈维军  李玉莲  陈永辉 《中国畜牧兽医》2011,38(11):5-8

选择120头三元杂交仔猪进行饲养试验,研究外源性谷氨酰胺和甘氨酰谷氨酰胺对28日龄断奶仔猪生产性能的影响。结果表明,基础日粮中添加1%谷氨酰胺和0.2%的甘氨酰谷氨酰胺对断奶仔猪的平均日增重及料重比均无显著影响,有降低腹泻率的趋势,但差异不显著(P>0.05)。  相似文献   

‘霞多丽’胚性细胞悬浮系的建立及植株再生     

侯丽霞  刘伟  张雅丽  刘新  卢江 《北方园艺》2011,(23):93-96

以‘霞多丽’前胚物质为试材,初步建立了‘霞多丽’胚性细胞悬浮系,并研究了不同激素及其浓度配比,不同种类及浓度的碳源以及谷氨酰胺对悬浮细胞生长的影响.结果表明:2,4-D和NOA均可以抑制胚性细胞的分化,但2,4-D更有利于细胞的增殖,最佳的2,4-D附加浓度为1 mg/L.同等浓度(0～60 g/L)的麦芽糖比蔗糖更利于细胞的生长,15 g/L为‘霞多丽’胚性悬浮细胞生长的最佳麦芽糖浓度.附加谷氨酰胺可以显著提高悬浮细胞的生长,其中以500 mg/L为最佳.  相似文献   

谷氨酰胺对AA鸡生长性能及肠道生长发育的影响   总被引：3，自引：1，他引：2  

戴四发  王立克  金光明  柳卫国  王珏  李升和 《中国家禽》2003,7(Z1):106-109

用192只1日龄肉鸡(随机分成二组,每组三重复)进行饲养试验,探讨外源性谷氨酰胺对从鸡早期生长性能和小肠生长发育的影响。结果显示:日粮中添加0.4％谷氨酰胺可显著(P<0.05)提高第二周龄内饲料转化率;显著增加(P<0.05)第二周龄内空肠长度及第三周回肠长度和重量;极显著(P<0.01)增加第一周回肠重量、第二周回肠长度和重量及十二指肠重量。  相似文献   

丛枝菌根真菌对宁夏枸杞生长和氮代谢的影响     

赵飞  唐明  张好强 《西北林学院学报》2022,37(1):166-171

丛枝菌根真菌（AMF）在促进植物生长和矿质营养吸收方面发挥重要作用。采用盆栽试验,探索了不同浓度氮处理（0、1、15 mmol NH₄NO₃）下丛枝菌根真菌对宁夏枸杞生长、光合作用和氮代谢的影响。结果表明,AMF对宁夏枸杞的侵染率随施氮量增加而增加,3种浓度氮处理下AMF侵染率分别为29.32%、43.93%和62.81%。施氮和接种AMF均提高宁夏枸杞叶片叶绿素含量和光合速率,提高根系和叶片全氮含量,提高根系硝酸还原酶活性（NR）及叶片谷氨酰胺合成酶（GS）活性;1 mmol NH₄NO₃处理能够促进宁夏枸杞生物量累积,提高叶片总叶绿素含量和NR活性;15 mmol NH₄NO₃处理能够提高宁夏枸杞叶片和根系NH₄⁺含量,提高根系NH₄⁺百分比,降低叶片NO₃^-百分比。表明AMF能够通过改善氮代谢及提高光合能力,促进宁夏枸杞生长。  相似文献   

Effects of amino acids and glucose on the fry colour of potato crisps     

O. S. Khanbari  A. K. Thompson 《Potato Research》1993,36(4):359-364

Summary Amino acids and sugars were removed from slices of potato of the cultivar Record. The slices were then soaked in solutions of the amino acids and various concentrations of glucose to study their effect on the fry colour of crisps. Glutamine was an important amino acid in the development of fry colour intensity at low glucose concentrations and also contributed to the dark fry colour when combined with glucose concentrations above 0.15%. The basic amino acid arginine had a similar but lesser effect and other amino acids used gave the same effect at glucose concentrations above 0.45%. Asparagine could play an important role in the development of fry colour quality and may decrease the grey colour intensity developed by the mixture of amino acids.  相似文献   

Nitrogen Assimilatory Enzymes and Amino Acid Content in Inoculated Foliar Fertilized Pea Plants Grown at Reduced Molybdenum Concentration     

Marieta Hristozkova  Maria Geneva  Ira Stancheva  Georgy Georgiev 《Journal of plant nutrition》2013,36(9):1409-1419

ABSTRACT

A possibility to improve nitrogen assimilation in nitrogen fixing Molybdenum (Mo) deficient pea plants was shown. The influence of foliar supplied nutrients in addition to root nutrition resulted in reducing the unfavorable effects of inorganic nitrogen on nodule function and Mo deficiency on the nitrogen assimilatory enzymes. Inoculated pea plants were grown on liquid nutrient solution both with and without Mo. The following variants were tested: Mo supplied plants with root nutrition (F1 + Mo); Mo supplied plants with root and foliar nutrition (F2 + Mo); Mo deficient plants with root nutrition (F1 ? Mo); and Mo deficient plants with root and foliar nutrition (F2 ? Mo). Foliar application of nutrients had a positive effect on the glutamine synthetase and glutamate synthase enzyme activities in the roots and nodules of Mo deficient plants. It was found that the foliar fertilization reduced the inhibitory effect of Mo shortage on the aspartate/asparagine content in the pea shoots.  相似文献   

Occurrence of 4-methyleneglutamine and 2-oxo-4-methyl-3-pentene-1,5-dioic acid in leaves and stem of tulip plants     

Takuji Ohyama  Takako Kera  Taro Ikarashi 《Soil Science and Plant Nutrition》2013,59(4):613-620

Abstract

The presence of 4-MeGln in the tulip plant was discovered by ZACHARIUS et al. (1954), and it was found that this amide generally occurred in the leaves of almost all the species of genus Tulipa (FOWDEN and STEWARD 1957a). The 4-MeGln compound has been detected in every part of the tulip plant, i.e., bulb scales, roots, basal plate, young shoots, leaves, stern, and flower (FOWDEN and STEWARD 1957a, b; OHYAMA 1986; OHYAMA et al. 1985, 1988a, b; ZACHARIUS et al. 1954, 1957). Especially 4-MeGln was found to be a major soluble N constituent in the leaves and stem of tulip of the flowering stage (OHYAMA et al. 1985; OHYAMA 1986).  相似文献