检索结果-南通市图书馆

Quantitative analysis of soil pores under natural vegetation successions on the Loess Plateau

Science China Earth sciences 2010年第4期53卷 617-625页

作者： ZHAO ShiWei1,ZHAO YongGang1,2.& WU JinShui3.1 State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau,institute of Soil and Water Conservation,Northwest agriculture & Forestry University,Yangling 712.00,China 2.Graduate University of Chinese {2. of {3.,Beijing 100049,China 3.institute of subtropical agriculture,Chinese {2. of {3.,changsha 41012.,China State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water Conservation Northwest Agriculture & Forestry University Yangling China Graduate University of Chinese academy of sciences Beijing China institute of subtropical {2. Chinese Academy of Sciences Changsha China

Soil pore is a key attribute of the soil structure that affects soil reservoir under natural vegetation recovery on the Loess *** study is to quantitatively analyze soil pore parameters,measured with Computed Tomography(CT) at 15-57 mm depths under five different vegetation succession stages using a concept of substituting "space" for "time" in the Ziwuling Forest Region of the Loess *** results showed that the soil pore parameters,such as pore number,porosity,circularity,and fractal dimension,increased significantly under the natural vegetation successions and varied with the pattern climax community stage>pioneering arbor community stage>scrub community stage>herbaceous community stage>abandoned farmland stage,indicating that natural vegetation recovery could remarkably improve soil pore *** the vegetation succession,this positive effect will be strengthened gradually,which means that the soil pore parameters may appear to be best at the climax community *** organic matter content increased linearly with the soil pore parameters(P<0.001).Increased organic matter accumulation was one of the major reasons for the changes in soil pore characteristics in natural vegetation succession.

关键词： Computed Tomography Loess Plateau natural vegetation succession soil pore soil organic matter

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Expression,Characterization and Immunogenicity of a Major Outer Membrane Protein from Vibrio alginolyticus

引用

Acta Biochimica et Biophysica Sinica 2007年第3期39卷 194-200页

作者： Ronghua QIAN~(1,2. Wuying CHU~3.Zhijuan MAO~(1,4) Chongwen ZHANG~(1,2. Yongwei WEI~2.Lian YU~2. 1 Department of Biomedical Engineering,Zhejiang University,Hangzhou 3.002.,China 2.institute of Preventive Veterinary Medicine,Zhejiang University,Hangzhou 3.002.,China 3.institute of subtropical agriculture,Chinese {2. of {3.,changsha 41012.,China 4 Ningbo Oceanography and Fishery institute,Ningbo 3.5012.China Department of Biomedical Engineering Zhejiang UniversityHangzhou 310027 China institute of Preventive Veterinary Medicine Zhejiang UniversityHangzhou 310029 China institute of subtropical {2. Chinese Academy of SciencesChangsha 410125 China Ningbo Oceanography and Fishery instituteNingbo 3.5012 China

Vibrio alginolyticus is one of the Vibrio pathogens common to humans and marine *** infection and induction of the host immune response,outer membrane proteins of bacteria play animportant *** this study,an outer membrane protein gene(ompW)was cloned from *** andexpressed in Escherichia *** 645 bp open reading frame(ORF)encodes a protein of 2.4 amino acidresidues with a predicted molecular weight of 2..3.*** amino acid sequence showed a high identitywith that of Photobacterium damselae(96.2.)and Vibrio parahaemolyticus(94.4%).The alignment analy-sis indicated that OmpW was highly *** dodecyl sulfate-polyacrylamide gel electrophoresisshowed that the gene was over-expressed in *** BL2.(DE3..Western blot analysis revealed that theexpressed protein had *** recombinant protein was purified by affinity chromatographyon Ni-NTA Superflow *** yellow croaker vaccinated with the purified OmpW showed significantlyincreased antibody to OmpW,which could resist the infection by ***.A specific antibody wasdetected by enzyme-linked immunosorbent *** study suggested that the conserved OmpW could bean effective vaccine candidate against infection by ***.

关键词： Vibrio alginolyticus ompW expression characterization immunogenicity vaccine candidate

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

^(13.)Cs Redistribution in Thin Stony Soil of a Carbonate Rock Slope in Southwest China

引用

Pedosphere 2011年第1期21卷 37-45页

作者： LI Hao ZHANG Xin-Bao WANG Kc-Lin WEN An-Bang institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 (China) Graduate University Chinese Academy of Sciences Beijing 100049 (China) State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 (China) institute of subtropical {2. Chinese Academy of Sciences Changsha 410125 (China)

The fallout radionuclide cesium-13.(13. Cs) has been widely employed as a tracer for assessment of soil loss from thick uniform soils;however,few studies have been conducted on thin stony soils on slopes underlain by carbonate rocks which are widely distributed in karst *** derived from 13. Cs measurement of soil samples collected along a carbonate rock slope with thin stony soil where neither soil erosion nor deposition occurred was used to investigate the characteristics of 13. Cs redistribution in a karst area of Southwest *** results indicated that the 13. Cs inventories of the surface soil on the slope studied were much lower than that of the local 13. Cs reference inventory and the 13. Cs activities were much higher than those on slopes with thick uniform *** spatial distribution of 13. Cs inventories was characterized by considerable *** high 13. Cs depletion in the stony soil of the slope studied was mainly because a considerable proportion of the fallout input of 13. Cs could be lost with runoff and the dissolution of carbonate particles in the soil promoted the loss of 13. *** demonstrated that the rates of soil loss could not be estimated from the degree of depletion of the 13. Cs inventory relative to the local reference inventory for the thin stony soil of the rocky slope underlain by carbonate rocks in the study area in the way that has been widely used in areas with thick uniform soils.

关键词： carbonate dissolution, ^13.Cs fallout, ^13.Cs inventory karst area runoff

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Recent Advances in Development of Herbicide Resistant Transgenic Hybrid Rice in China

引用

Rice science 2009年第3期16卷 235-239页

作者： XIAO Guo-ying institute of subtropical AgricuIture Chinese Academy of Sciences Changsha 410125 China

In addition to weed control in direct seeding field of hybrid rice, herbicide resistance genes were used by Chinese scientists to increase and identify the purity of hybrid seeds, and to realize the mechanization of hybrid seed production. The elite restorer lines, such as Minghui 63. R752. T461, R402. D68 and E3.0}were transformed directly with herbicide resistance genes, in which D68 and E3.0}are restorer lines of two-line system and the others are of three-line system. Because almost all of important restorer lines are indica varieties and are recalcitrant in transformation, many herbicide resistant near-isogenic restorer lines were developed by sexual hybridization of indica and japonica varieties and backcross with indica restorer lines later, such as Ce 64, Minghui 63. Teqing, Milyang 46, R402.and 93.1, in which 93.1 is a restorer line of two-line system. The elite photoperiod-sensitive/thermo-sensitive genic male sterile lines, such as Pei＇ai 64S, P88S, 4008S and 7001S, were transformed with herbicide resistance genes. A few herbicide resistant male sterile lines were developed through sexual hybridization and subsequently systemic selection, such as Bar12.9S, Bar2.72., 05Z2.1A and 05Z2.7A. With the employment of herbicide resistant male sterile lines or herbicide resistant restorer lines, a few herbicide resistant hybrid rice combinations were developed, such as Xiang 12.S/Bar 68-1 and Pei＇ai 64S/Bar 93.1. Based on herbicide resistance, the research was marching on to investigate the parental lines of hybrid rice with insect resistance, drought tolerance, etc.

关键词： hybrid rice herbicide resistance breeding transgene

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The δ^(18)O in the Guliya shallow ice core during the prevailing summer monsoons and sea-air interactions

引用

Journal of Geographical sciences 2001年第4期11卷 58-68页

作者： ZHANG Xin-ping1,2. Masayoshi Nakawo3. YAO Tan-dong4 (1. Nanjing institute of Geography and Limnology, CAS, Nanjing 2.0008, China 2. institute of Territory and Environment Research, Hunan Normal University, {2. 410081, China 3. institute for Hydro

The correlations of the d18Omax in the shallow ice core from the Guliya ice cap on the Tibetan Plateau with the global sea surface temperatures (SST) and height at the 500 hPa over the Northern Hemisphere were analyzed. The correlated regions on oceans that have a significant influence on the d18Omax in the Guliya ice core are all located in ocean currents, or convergent regions of currents. They are the eastern Equatorial Pacific, the Northern Pacific Current, the Hot Pool in the eastern Indian Ocean, the Mozambique Current, the Northern Atlantic Current, the Canary Current and the Atlantic Equatorial Current. The d18Omax in the Guliya ice core has negative correlations with the SST located in the lower latitudes, and positive correlations with the SST in the middle latitudes. The correlated areas at the 500 hPa that have a great impact on the d18Omax are located in the subtropical highs over the mid-low-latitude oceans and the long-wave trough area over Balkhash Lake, where there are marked negative correlations between the heights in those areas and the d18Omax. The influencing mechanism is displayed by the diversity of the vapor origins transported to the Guliya region. The strengths of the European ridge and the ridge over Baikal Lake have notable positive correlations with the d18Omax. The two systems indirectly influence the vapor transportation towards the Guliya region by the adjustment of long-wave trough and ridge.

关键词： the Tibetan Plateau the Guliya ice core δ18Omax SST circulation at 500 hPa correlation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Stress responsive gene CIPK14 is involved in phytochrome A-mediated far-red light inhibition of greening in Arabidopsis

引用

Science China(Life sciences) 2010年第11期53卷 1307-1314页

作者： QIN YuZhi2.3. GUO Ming1, LI Xu1, XIONG XingYao2.3. HE ChangZheng2.3. NIE XianZhou4 & LIU XuanMing1 1College of Life Science and Biotechnology, Hunan University, {3. 410082. China 2.ollege of Horticulture and Landscape, Hunan Agricultural University, changsha 41012., China 3.unan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization, Hunan Agricultural University, changsha 41012., China 4Potato Research Centre, {3. and Agri-Food Canada, Fredericton, New Brunswick E3. 4Z7, Canada College of Horticulture and Landscape Hunan Agricultural University Changsha China Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization Hunan Agricultural University Changsha China College of Life Science and Biotechnology Hunan University Changsha China Potato Research Centre Agriculture and Agri-Food Canada Fredericton Canada

In this study, we show that CIPK14,a stress responsive CBL-interacting protein kinase gene,is involved in phytochrome A-mediated far-red light inhibition of greening in Arabidopsis seedlings. The CIPK14-impairment mutant cipk14 grown in continuous far-red (FR) light did not show greening when exposed to white light illumination for 15 h. By contrast, the FR-grown phytochrome A null mutant phyA greened within 0.5 h of exposure to white light. Although greening of Col-4 (wild-type) was not completely abolished by FR, it exhibited a significantly decreased greening capacity compared with that of phyA. Further analyses demonstrated that the expression of protochlorophyllide reductase (POR) genes was correlated with the greening ability of the genotypes. In addition, CIPK14 appeared to be regulated by both the circadian clock and PhyA. Taken together, these results suggest that CIPK14 plays a role in PhyA-mediated FR inhibition of seedling greening, and that a Ca-related kinase may be involved in a previously undefined branch point in the phytochrome A signaling pathway.

关键词： chlorophyll CIPK14 far-red light inhibition of greening POR phytochrome A

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Collnearity and similar expression pattern of rice DREB1s reveal their functional conservation in the cold-responsive pathway

Collnearity and similar expression pattern of rice DREB1s re...

引用

第十三届全国植物基因组学大会

作者： Donghai Mao,Caiyan Chen~* institute of subtropical {2.,Chinese {3. of sciences,changsha 41012.,China

The clustered genes C-repeat(CRT) binding factor(CBF)1/dehydration-responsive element binding protein DREB1B,CBF2.DREB1C,and CBF3.DREB1A play a central role in cold acclimation and facilitate plant resistance to freezing in Arabidopsis ***(Oryza sativa L.) is very sensitive to low temperature;enhancing the cold stress tolerance of rice is a key challenge to increasing its *** this study,we

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Enhancing disease resistances of Super Hybrid Rice with four antifungal genes

引用

Science China(Life sciences) 2007年第1期50卷 31-39页

作者： ZHU HuaChen1, XU XinPing1, XIAO GuoYing2.3. YUAN LongPing2.& LI BaoJian1 1 Biotechnology Research Center, Key Laboratory of Gene Engineering of Ministry of Education, Sun Yat-sen University, Guangzhou 5102.5, China 2.China National Hybrid Rice R&D Center, Hunan Hybrid Rice Research Center, changsha 41012., China 3.institute of subtropical agriculture, the Chinese {2. of {3., changsha 41012., China Biotechnology Research Center Key Laboratory of Gene Engineering of Ministry of Education Sun Yat-sen University Guangzhou 510275 China China National Hybrid Rice R&D Center Hunan Hybrid Rice Research Center Changsha 410125 China institute of subtropical {2. the Chinese Academy of Sciences Changsha 410125 China China National Hybrid Rice R&D Center Hunan Hybrid Rice Research Center Changsha 410125 China

A plant expression vector harboring four antifungal genes was delivered into the embryogenic calli of ‘93.1’, an indica restorer line of Super Hybrid Rice, via modified biolistic particle bombardment. Southern blot analysis indicated that in the regenerated hygromycin-resistant plants, all the four anti-fungal genes, including RCH10, RAC2., β-Glu and B-RIP, were integrated into the genome of ‘93.1’, co-transmitted altogether with the marker gene hpt in a Mendelian pattern. Some transgenic R1 and R2.progenies, with all transgenes displaying a normal expression level in the Northern blot analysis, showed high resistance to Magnaporthe grisea when tested in the typical blast nurseries located in Yanxi and Sanya respectively. Furthermore, transgenic F1 plants, resulting from a cross of R2.homo-zygous lines with high resistance to rice blast with the non-transgenic male sterile line Peiai 64S, showed not only high resistance to M. grisea but also enhanced resistance to rice false smut (a disease caused by Ustilaginoidea virens) and rice kernel smut (another disease caused by Tilletia barclayana).

关键词： Super Hybrid Rice multi-gene transformation rice blast rice false smut rice kernel smut anti-fungi disease resistance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effect of D-allethrin on proteinase activity in the midgut of the spider Pardosa pseudoannulata detected by bulk acoustic wave impedance technique

引用

Progress in Natural Science:Materials International 2007年第12期17卷 1521-1526页

作者： Wang Zhi1, Fu Xiuqin2. Rao Liqun1 and Lu Xiangyang1(1. College of Bioscience & Biotechnology, Hunan agriculture University, changsha 41012., China 2. College of Life Science, Hunan Normal University, {2. 410081, China) College of Bioscience and Biotechnology Hunan Agriculture University Changsha 410128 China College of Life Science Hunan Normal University Changsha 410081 China

The piezoelectric bulk acoustic wave (BAW) impedance analysis method was employed to monitor in situ the proteinase-catalyzed hydrolyzation of casein and the effect of pesticide D-allethrin on the proteinase activity in the midgut of the spider Pardosa pseudoannulata, and the results obtained were verified by ultraviolet spectroscopy. The hydrolyzation was significantly increased in the presence of low-dose D-allethrin, whereas significantly inhibited in the presence of high-dose D-allethrin, and a correlation was found precisely between the enzyme activity reflected by the final frequency shift after the hydrolyzation and the concentration of D-allethrin, with a significant frequency response observed even at a 1.5×10-5 volume ratio of D-allethrin to distilled water. The present work may have presented a novel method feasible for study on the mechanism of excitability of spiders under low-dose D-allethrin pesticide and quick detection of proteinase activity.

关键词： Pardosa pseudoannulata D-allethrin proteinase activity ultraviolet spectroscopy piezoelectric bulk acoustic wave impedance method.

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Plant Phosphorus Uptake in a Soybean-Citrus Intercropping System in the Red Soil Hilly Region of South China

引用

Pedosphere 2009年第2期19卷 244-250页

作者： ZHOU Wei-Jun ZHANG Yang-Zhu WANG Kai-Rong LI He-Song HAO Yin-Ju LIU Xin College of Resources and Environment Hunan Agricultural University Changsha 410128 China institute of subtropical {2. Chinese Academy of Sciences Changsha 410125 China

A field microplot experiment was conducted in the red soil hilly region of South China to evaluate plant phosphorus (P)uptake under soybean and citrus monoculture and the soybean-citrus intercropping system using the 3.0} tracer technique.P fertilizer was applied at three depths(15,3.,and 55 cm).The experimental results showed that the planting pattern and 3.0} application depth significantly affected the characteristics of P uptake by soybean and *** the soybean-citrus intercropping system,considerable competition was observed when the 3.0} fertilizer was applied to the topsoil(15 cm);therefore,the 3.0} recovery rate declined by 41.5%and 14.7%for soybean and citrus,and 3.0} supplying amount of topsoil to soybean and citrus decreased by 3.6.8 and 148.1 mg plot-1,respectively,compared to those under the ***,3.0} recovery of soybean was promoted when 3.0} fertilizer was applied to the deeper soil layers (3. and 55 cm)under soybean-citrus *** the soybean monoculture,3.0} fertilizer could hardly be used by soybean when 3.0} fertilizer was applied at the 55 cm depth or below,with the recovery rate being less than 0.1%;it was up to 0.2.3.by soybean under *** higher P recovery of soybean under soybean-citrus intercropping when P was applied in the deeper soil layers was because part of the P nutrient that the citrus absorbed from the deeper soil layers could be released into the topsoil and then it could be used by the soybean.

关键词： citrus intercropping monoculture P uptake soybean

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：