A survey of petal-specific proteomes of soybean(Glycine max(L.) Merr[Non-italic].) was conducted comparing protein expression profiles in different petals. Two-dimensional polyacrylamide gel electrophoresis reference ...A survey of petal-specific proteomes of soybean(Glycine max(L.) Merr[Non-italic].) was conducted comparing protein expression profiles in different petals. Two-dimensional polyacrylamide gel electrophoresis reference maps of protein extracts from standard petals(SP), lateral wings(LW), keel petals(KP), and reproductive organs(RO)(a mixture of stamen and carpel) were obtained. Protein expression in the three petal types was compared using Image Master TM 2 D platinum 6.0 software. This indicated that the proportion of homologous proteins between SP and LW was 59.27%, between SP and KP was 61.48%, and between LW and KP was 60.05%. Within a mass range of 6.5-200.0 ku and pH 4.0-7.0, approximately 590, 646, 544, and 700 protein spots were detected in SP, LW, KP, and RO, respectively. A total of 82 differentially expressed proteins were detected. Sixty-four of these detected spots were differentially expressed and showed more than 2-fold changes in abundance; of these 64 proteins, 26 showed increased expression and 38 showed decreased expression. Among these spots, single organ-specific proteins were also identified.They were ID 49(60.9 ku), ID 45(50.0 ku), and ID 46(40.5 ku) in RO, ID 98(42.0 ku) in SP, and ID 05(29.0 ku) in KP. A total of 14 protein spots from 82 differentially expressed proteins were identified with LC-MS/MS. Further protein identification was conducted using the SwissProt and NCBInr databases. The identified proteins and their putative functions were discussed further. This was the first study reporting the comparison of petal protein profiles of soybean florets using proteomics tools.展开更多
Dwarfing is useful to reduce plant height,when breeding high-yielding and non-lodging crops.In this study,a set of natural storage protein subunit-null dwarf mutants of soybean was reported that showed strongly reduce...Dwarfing is useful to reduce plant height,when breeding high-yielding and non-lodging crops.In this study,a set of natural storage protein subunit-null dwarf mutants of soybean was reported that showed strongly reduced plant stature and deficiency in various 7S and 11S subunits,designated as snd1 mutants.Under normal growth conditions,the snd1 mutants showed a severe dwarf phenotype,with plant height of about 25 cm.Compared with wild-type DN47,the mutant snd1 exhibited no obvious morphological differences at the early stage of development.All the snd1 mutants examined had fewer nodes and shorter than normal internodes;the leaves were similar in shape to normal parents,but were dark-green at the mature stage.The flower size was similar to DN47;however,the flowering period was shorter than in the wild-type.Significant variation was noted for protein content,oil content of the seeds and size of seeds(weight of 100 seeds)among 17 snd1 dwarf lines.Genetic analysis indicated that the dwarfism of snd1 was controlled by a single recessive gene.The snd1 dwarf mutant had markedly different dynamic levels of the endogenous hormones gibberellin(GA),brassinosteroid,indole-3-acetic acid and abscisic acid,at the seedling stage.Exogenous GA3 treatment led to recovery of the plant height phenotype of the snd1 mutant;GA3 at 0.1 mm had the largest effect on enhancing plant height.Using molecular markers,snd1 gene was approximately mapped in an interval of 603 kb between markers Satt166 and Satt561 on chromosome 19.Snd1 mutant provided valuable material for hypoallergenic soybean breeding and the snd1 gene might be a novel gene related to plant height in soybean.展开更多
目的:构建Max二聚化蛋白1(Max dimerization protein 1,Mad1)的真核表达载体,研究Mad1对胃癌细胞增殖和迁移能力的影响。方法:利用DNA重组技术将Mad1基因克隆至pEGFP-N1载体,构建重组真核表达载体pEGFP-N1-Mad1。经酶切和测序鉴定后,采...目的:构建Max二聚化蛋白1(Max dimerization protein 1,Mad1)的真核表达载体,研究Mad1对胃癌细胞增殖和迁移能力的影响。方法:利用DNA重组技术将Mad1基因克隆至pEGFP-N1载体,构建重组真核表达载体pEGFP-N1-Mad1。经酶切和测序鉴定后,采用脂质体转染技术将重组质粒瞬时转染人胃癌AGS细胞,RT-PCR及Western blot检测Mad1基因和蛋白的表达。荧光显微镜观察Mad1在AGS细胞内的定位情况。CCK-8和Transwell实验研究Mad1对胃癌AGS细胞增殖和迁移能力的影响。结果:成功构建携带Mad1基因的真核表达载体pEGFP-N1-Mad1。将重组质粒瞬时转染AGS细胞后,RT-PCR和Western blot检测到Mad1基因和蛋白的表达。Mad1基因表达产物定位于AGS细胞核中。CCK-8和Transwell实验结果显示,转染Mad1的AGS细胞与转染空载体的AGS细胞及正常AGS细胞相比,细胞增殖活力和迁移能力明显降低。结论:成功构建了真核表达载体p EGFP-N1-Mad1,研究表明Mad1可以抑制胃癌AGS细胞的增殖和迁移。展开更多
大豆(Glycine max L.)和其它豆科植物一样,子叶细胞中的贮藏蛋白质是积累在蛋白体内的。大豆子叶中蛋白体的形成有两种途径。大豆种子中的贮藏蛋白质有两种主要成分:7S豌豆球蛋白(vicilin或conglycinin)和11S豆球蛋白(legumin或glycinin...大豆(Glycine max L.)和其它豆科植物一样,子叶细胞中的贮藏蛋白质是积累在蛋白体内的。大豆子叶中蛋白体的形成有两种途径。大豆种子中的贮藏蛋白质有两种主要成分:7S豌豆球蛋白(vicilin或conglycinin)和11S豆球蛋白(legumin或glycinin)。7S球蛋白有3种亚基:α’、α和β;11S球蛋白分为酸性亚基区(11S展开更多
基金Supported by Harbin Science and Technology Bureau(2016RQYXJ018,2017RAQXJ104)the Key Laboratory of Soybean Biology in the Chinese Ministry of Education,Northeast Agricultural University(SB17A01)+3 种基金the National Natural Science Foundation of China(31801386)Heilongjiang Natural Science Foundation(LC2018008)Heilongjiang General Young Innovative Talents Training Plan(UNPYSCT-2018158)Certificate of China Postdoctoral Science Foundation Grant(2018M641839)
文摘A survey of petal-specific proteomes of soybean(Glycine max(L.) Merr[Non-italic].) was conducted comparing protein expression profiles in different petals. Two-dimensional polyacrylamide gel electrophoresis reference maps of protein extracts from standard petals(SP), lateral wings(LW), keel petals(KP), and reproductive organs(RO)(a mixture of stamen and carpel) were obtained. Protein expression in the three petal types was compared using Image Master TM 2 D platinum 6.0 software. This indicated that the proportion of homologous proteins between SP and LW was 59.27%, between SP and KP was 61.48%, and between LW and KP was 60.05%. Within a mass range of 6.5-200.0 ku and pH 4.0-7.0, approximately 590, 646, 544, and 700 protein spots were detected in SP, LW, KP, and RO, respectively. A total of 82 differentially expressed proteins were detected. Sixty-four of these detected spots were differentially expressed and showed more than 2-fold changes in abundance; of these 64 proteins, 26 showed increased expression and 38 showed decreased expression. Among these spots, single organ-specific proteins were also identified.They were ID 49(60.9 ku), ID 45(50.0 ku), and ID 46(40.5 ku) in RO, ID 98(42.0 ku) in SP, and ID 05(29.0 ku) in KP. A total of 14 protein spots from 82 differentially expressed proteins were identified with LC-MS/MS. Further protein identification was conducted using the SwissProt and NCBInr databases. The identified proteins and their putative functions were discussed further. This was the first study reporting the comparison of petal protein profiles of soybean florets using proteomics tools.
基金Supported by the Ministry of Science and Technology of China(2016YFD0100500)Funding from Harbin Science and Technology Bureau(2016RQYXJ018,2017RAQXJ104)+4 种基金the Key Laboratory of Soybean Biology in the Chinese Ministry of Education,Northeast Agricultural University(SB17A01)National Natural Science Foundation of China(31801386)Heilongjiang Natural Science Foundation(LC2018008)Heilongjiang General Young Innovative Talents Training Plan(UNPYSCT-2018158)Certificate of China Postdoctoral Science Foundation Grant(2018M641839)
文摘Dwarfing is useful to reduce plant height,when breeding high-yielding and non-lodging crops.In this study,a set of natural storage protein subunit-null dwarf mutants of soybean was reported that showed strongly reduced plant stature and deficiency in various 7S and 11S subunits,designated as snd1 mutants.Under normal growth conditions,the snd1 mutants showed a severe dwarf phenotype,with plant height of about 25 cm.Compared with wild-type DN47,the mutant snd1 exhibited no obvious morphological differences at the early stage of development.All the snd1 mutants examined had fewer nodes and shorter than normal internodes;the leaves were similar in shape to normal parents,but were dark-green at the mature stage.The flower size was similar to DN47;however,the flowering period was shorter than in the wild-type.Significant variation was noted for protein content,oil content of the seeds and size of seeds(weight of 100 seeds)among 17 snd1 dwarf lines.Genetic analysis indicated that the dwarfism of snd1 was controlled by a single recessive gene.The snd1 dwarf mutant had markedly different dynamic levels of the endogenous hormones gibberellin(GA),brassinosteroid,indole-3-acetic acid and abscisic acid,at the seedling stage.Exogenous GA3 treatment led to recovery of the plant height phenotype of the snd1 mutant;GA3 at 0.1 mm had the largest effect on enhancing plant height.Using molecular markers,snd1 gene was approximately mapped in an interval of 603 kb between markers Satt166 and Satt561 on chromosome 19.Snd1 mutant provided valuable material for hypoallergenic soybean breeding and the snd1 gene might be a novel gene related to plant height in soybean.
文摘大豆(Glycine max L.)和其它豆科植物一样,子叶细胞中的贮藏蛋白质是积累在蛋白体内的。大豆子叶中蛋白体的形成有两种途径。大豆种子中的贮藏蛋白质有两种主要成分:7S豌豆球蛋白(vicilin或conglycinin)和11S豆球蛋白(legumin或glycinin)。7S球蛋白有3种亚基:α’、α和β;11S球蛋白分为酸性亚基区(11S
