适用于条斑紫菜的双向电泳样品制备方法     

赵宇鹏  周伟  赵佩佩  才金玲  朱大玲  潘光华  刘洪艳  王广策 《海洋科学》2013,37(5):19-24

为了建立适于条斑紫菜(Porphyra yezoensis)蛋白质组学分析的的样品提取方法, 作者以条斑紫菜叶状体为材料, 比较了饱和硫酸铵沉淀法、三氯乙酸/丙酮沉淀法和酚提取方法3 种方法对条斑紫菜叶状体总蛋白的提取效果。结果表明, 针对条斑紫菜叶状体细胞中含有大量多糖, 多酚化合物, 色素等干扰物质的特点, 通过酚提取方法能有效去除这些干扰杂质, 得到清晰、稳定、干净的双向电泳图谱和相对较多的蛋白质点数, 为提高其他大型海藻的总可溶性蛋白提取效率提供了重要参考。  相似文献   

Effect of high salinity on cell growth and protein production of Antarctic ice microalgae Chlamydomonas sp. ICE-L     

郑洲  缪锦来  阚光峰  金青  丁燏  刘芳明  王守强  王以斌 《极地研究(英文版)》2010,21(1):81-90

Antarctic ice microalgae Chlamydomonas sp. ICE-L can survive and thrive in Antarctic sea ice. In this study, Chlamydomonas sp. ICE-L could survive at the salinity of 132‰ NaCl. SDS-PAGE showed that the density of 2 bands (26 and 36 kD) decreased obviously at the salinity of 99‰ NaCl compared to at the salinity of 33‰ NaCl. The soluble proteins in Chlamydomonas sp. ICE-L grown under salinity of 33‰ and 99% NaCl were compared by 2-D gel electrophoresis. After shocking with high salinity, 8 protein spots were found to disappear, and the density of 28 protein spots decreased. In addition, 19 protein spots were enhanced or induced, including one new peptide (51 kD). The changes of proteins might be correlated with the resistance for Chlamydomonas sp. ICE-L to high salinity.  相似文献   

Denaturing gradient gel electrophoresis shows that bacterial communities change with mid-ocean ballast water exchange     

Akiko Tomaru  Masanobu Kawachi  Yasuwo Fukuyo 《Marine pollution bulletin》2010,60(2):299-255

Ships carry ballast water for better stability and to control trim. However, the discharge of ballast water near ports is known to transport invasive species from one coastal area to another. The exchange of ballast water on the high seas is supposed to reduce such invasions of exotic species. In this study, we used denaturing gradient gel electrophoresis (DGGE) to analyze the composition of the bacterial community in ballast water before and after such a mid-ocean exchange, and we also measured total bacterial counts. Our findings confirmed that the ballast water was replaced by the mid-ocean exchange, as indicated by the marked change in the composition of the bacterial community. There was also a significant decrease in bacterial abundance after the mid-ocean exchange. Finally, our findings support the incubation hypothesis, because the composition of the bacterial communities changed over time within the same ballast water.  相似文献   

PAHs contamination and bacterial communities in mangrove surface sediments of the Jiulong River Estuary, China   总被引：2，自引：0，他引：2  

Tian Y  Liu HJ  Zheng TL  Kwon KK  Kim SJ  Yan CL 《Marine pollution bulletin》2008,57(6-12):707-715

Sixteen sediment samples collected from eight transects in a mangrove swamp of the Jiulong River Estuary, Fujian, China were investigated for their content of polycyclic aromatic hydrocarbons (PAHs) and the biodegradation potential of the indigenous microorganisms. The bacterial community structures in the mangrove sediments and in enrichment cultures were also investigated. The results showed that the total PAHs concentration of mangrove sediments ranged from 280 to 1074 ng g(-1) dry weight, that the PAHs composition pattern in the mangrove sediments was dominated by high molecular weight PAH components (4-6 rings), and that Benzo[ghi]perylene and Indeno[1,2,3-cd]pyrene were the most dominant at different stations. Abundant PAH-degrading bacteria were found in all the stations, the values of phenanthrene-degrading bacteria ranged from 5.85 x 10(4) to 7.80 x 10(5) CFU g(-1) dry weight, fluoranthene-degrading bacteria ranged from 5.25 x 10(4) to 5.79 x 10(5) CFU g(-1) dry weight, pyrene-degrading bacteria ranged from 3.10 x 10(4) to 6.97 x 10(5) CFU g(-1) dry weight and the benzo(a)pyrene-degrading bacteria ranged from 5.25 x 10(4) to 7.26 x 10(5) CFU g(-1) dry weight. DGGE analysis of PCR-amplified 16S rDNA gene fragments confirmed that there was a remarkable shift in the composition of the bacterial community due to the addition of the different model PAH compound phenanthrene (three ring PAH), fluoranthene(four ring PAH), pyrene(four ring PAH) and benzo(a)pyrene(five ring PAH) during enrichment batch culture. Eleven strains were obtained with different morphology and different degradation ability. The presence of common bands for microbial species in the cultures and in the native mangrove sediment DNA indicated that these strains could be potential in situ PAH-degraders.  相似文献   

大弹涂鱼不同组织器官的同工酶研究   总被引：24，自引：1，他引：23  

金春华  钟爱华  张海琪  黄福勇  李明云 《海洋科学》2004,28(3):35-40

采用垂直聚丙烯酰胺平板电泳技术,对大弹涂鱼(Boleophthalmus pectinirostris)的眼睛、心脏、肝脏、肌肉、脾脏和鳃等6种组织器官中的13种同工酶进行研究,并分析了其酶谱表型。结果表明,四唑氧化酶(TO)和酸性磷酸酶(ACP)没有检测到酶带;三梨醇脱氢酶(SDH)和葡萄糖-6-磷酸脱氢酶(G-6-PDH)仅在肝脏中表达;超氧化物歧化酶(SOD)在所有组织中均存在,部分组织中存在差异;乳酸脱氢酶(LDH)、苹果酸脱氢酶(MDH)、苹果酸酶(MEP)、酯酶(EST)、醇脱氢酶(ADH)、D-葡萄糖脱氢酶(GcDH)、甲酸脱氢酶(FDH)、谷氨酸脱氢酶(GDH)则具有明显的组织特异性。  相似文献   

毛细管离子电泳分离间接紫外光度法测定镍矿石中镍钴铜     

杨永坛  梁冰  康经武  欧庆瑜 《岩矿测试》1998,17(4)

研究了以咪唑为背景吸收电解质,α羟基异丁酸为络合剂,毛细管离子电泳分离,间接紫外光度法测定镍矿石中Ｎｉ、Ｃｏ、Ｃｕ含量。考察了背景电解质的ｐＨ值、α羟基异丁酸（αＨＩＢＡ）和咪唑浓度对Ｆｅ３＋、Ｃｏ２＋、Ｎｉ２＋、Ｚｎ２＋、Ｃｕ２＋分离的影响。在优化的条件下,几种离子在８ｍｉｎ内完成分离,检测限低至０．２ｍｇ／Ｌ。以Ｚｎ作内标,改善了方法的精密度,对于２０ｍｇ／Ｌ各离子峰面积的相对标准偏差（ＲＳＤ,ｎ＝９）＜６．５％。采用内标标准曲线法对镍矿样中Ｎｉ、Ｃｏ、Ｃｕ的含量进行了测定,线性范围分别在０．５～８０ｍｇ／ＬＮｉ２＋和Ｃｏ２＋,５～８０ｍｇ／ＬＣｕ２＋,结果与其它方法一致。  相似文献   

克氏原鳌虾LDH同工酶的组织特异性研究     

母昌考  张引  戴余军  黄孝湘  徐东生  吕帮玉 《海洋湖沼通报》2008,(3)

以克氏原螯虾为材料,采用聚丙烯酰胺凝胶电泳方法,分析了肌肉、眼球、肝胰腺和心脏4种组织和器官中乳酸脱氢酶(LDH)同工酶的表达情况.结果发现,眼球中出现Ldh-5和Ldh-6 2条酶带,肌肉中出现Ldh-1、Ldh-2、Ldh-3、Ldh-4、Ldh-5共5条酶带,肝胰腺中只出现Ldh-6 1条酶带,心脏中出现Ldh-3和Ldh-5共2条带.在这些检测到的酶带中,肌肉中Ldh-5活性最强,染色最深.实验结果表明,不同组织中LDH的同工酶的表达存在差异,表现出明显的组织特异性.  相似文献   

Abergasilus amplexus gen. et sp. nov. (Ergasilidae; parasitic Copepoda) from fishes in Lake Ellesmere,New Zealand     

G. C. Hewitt 《新西兰海洋与淡水研究杂志》2013,47(2):173-177

This taxon is distinguished from other Ergasilidae by having only three pairs of legs, and a well‐developed hook on the penultimate joint of the second antenna abutting against the claw‐like terminal segment. A. amplexus has been reported from Anguilla australis, A. dieffenbachii, Perca fluviatilis, Carassius auratus, Retropinna retropinna, Physiculus bachus, Galaxias maculatus, Arripis trutta, Rhombosolea leporina, R. retiaria, and R. plebeia from Lake Ellesmere, near Christchurch, and from Anguilla australis from Makara River near Wellington. Both localities are euryhaline.  相似文献   

光温敏核不育水稻幼穗育性转换期蛋白质组的初步分析   总被引：2，自引：0，他引：2  

梁海鹰  谢锦云  陈平  曹孟良 《广东海洋大学学报》2007,27(3):117-122

为找寻光温敏核不育水稻幼穗与育性调控有关的蛋白质,采用固相pH梯度-SDS聚丙烯酰胺双向凝胶电泳对光温敏核不育水稻(培矮64S)育性转换期幼穗总蛋白进行了分离,获取凝胶图像并进行重复性分析,通过微量测序-Edman降解方法和原位酶解及MALDI-TOF质谱的方法鉴定了60个蛋白质点。结果表明:本方法可得取分辨率和重复性较好的凝胶图谱。蛋白质点在2D胶上的重复性为:沿等电聚焦方向偏差为1.49±0.22 mm,沿SDS-PAGE方向偏差为1.24±0.18 mm。37个蛋白质点得到了准确的鉴定结果,其中16个是差异蛋白质点。在不育变化为可育的过程中,明显表达上调的蛋白质点包括几丁质酶,丙酮酸脱氢酶等;明显下调的蛋白质包括超氧化物歧化酶,硝酸还原酶脱辅基酶蛋白等;金属硫蛋白RicMT只在可育中存在。  相似文献   

管角螺不同组织同工酶的研究     

梁海鹰  曹伏君  伍泽妹  张亮珠 《广东海洋大学学报》2007,27(6):22-26

采用聚丙烯酰胺垂直板梯度凝胶电泳技术,对管角螺7种组织(外套膜、肌肉、肝脏、心脏、生殖腺和缠卵腺)的5种同工酶(EST、SOD、ME、MDH、LDH)进行了分析,结果表明:5种同工酶存在不同程度的组织特异性,SOD、EST、LDH在肝脏组织中有较高活性,而MDH、ME在心脏组织中活性较高。  相似文献