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Changes in Inositol Phosphates in Low Phytic Acid Field Pea (Pisum sativumL.) Lines during Germination and in Response to Fertilization

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American Journal of Plant Sciences 2013年第2期4卷 251-256页

作者： Dil Thavarajah Pushparajah Thavarajah Darshika Amarakoon Abby Fenlason Casey R. Johnson Phil Knutson Thomas D. Warkentin Crop Development Centre University of Saskatchewan Saskatoon Canada School of Food Systems North Dakota State University Fargo USA

Inositol phosphates are the main form of phosphorous (P) storage in legume seeds. Mutants low in inositol hexaphosphate (IP6), also known as phytic acid (PA), have been developed to increase iron (Fe) bioavailability and reduce P waste to the environment. The objectives of this study were to determine 1) inositol-P form changes during germination, and 2) the effect of P fertilizer application on seed PA, total P, and Fe concentration of three field pea (Pisum sativum L.) cultivars and two low-PA lines grown under greenhouse conditions. Low-PA field pea lines clearly had lower PA (1.3 - 1.4 mg·g-1) than cultivars (3.1 - 3.7 mg·g-1). Phytic acid concentration in both cultivars and low-PA lines decreased during germination, but tended to increase seven days after germination. Levels of inositol-3-phosphate-phosphate (IP3-P;0.6 mg·g-1) and inorganic P (1.8 - 2.0 mg·g-1) were higher in low-PA lines than in the field pea cultivars. Reduction of PA in low-PA line seeds may reduce seed Fe and total P concentrations, as levels in the low-PA lines (37 - 42 mg·kg-1 Fe;4003 - 4473 mg·kg-1 total P) were typically less than in field pea cultivars (37 - 55 mg·kg-1 Fe;3208 - 4985 mg·kg-1 total P) at different P fertilizer rates. Overall, IP3 is the major form of P present in low-PA field pea lines during germination;however IP6 is the major form of P present in field pea cultivars. Therefore, low-PA field pea lines could be a potential solution to increase Fe bioavailability, feed P utilization, and reduce P waste to the environment.

关键词： Phytic Acid Inositol-3-Phosphate Low Phytic Acid Mutants Field Peas iron Phosphorus

Environmental mechanism of magnetic susceptibility changes of lacustrine sediments from Lake Hulun, China

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Science China Earth Sciences 2000年第5期43卷 534-540页

作者：胡守云王苏民 Erwin Appel 吉磊 Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing 210008 China Institut fur Geologie und Palaontologie Universitat Tubingen Tubingen 72076 Germany

The changes of magnetic susceptibility (κ) are correlated with those of corresponding sedimentological, geochemical, mineralogical and biological results, which verifies that κ can be taken as one of the environmental proxies. However, usually the exact origin of magnetic signal is poorly understood, and is difficult to relate with the environmental evolution. Magnetic properties of material derived from the catchment and sedimentary environment may affect the accumulation, preservation, or authigenesis and diagenesis of magnetic minerals. In the Lake Hulun region in Inner Mongolia, it is found that muddy sediments, deposited during high water level period (corresponding to humid climate), have comparatively high κ values. In contrast, the sandy sediments, deposited during low water level period (corresponding to arid climate), have low κ values. Detailed rock magnetic investigation confirms that detrital magnetite derived from volcanic rocks in the catchment exists in both muddy and sandy

关键词： lacustrine sediment magnetic susceptibility environmental magnetism ferrimagnetic iron sulphide Lake Hulun.

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Mortality and morbidity due to the failure to treat mild anemia unrelated to cancer in elderly Americans—Review of the literature and case presentation

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Advances in Aging Research 2013年第4期2卷 154-159页

作者： Allen D. Allen Medical Research Division New Terra Enterprises Los Angeles

Even mild iron deficiency anemia, as defined by the World Health Organization, is associated with increased mortality and significant morbidity in elderly individuals who are cancer free. Yet, anemia in the elderly is often dismissed as a benign sign of aging. This problem is exacerbated by the fact that elderly individuals often suffer from gastrointestinal complaints that preclude treatment with iron supplements by mouth. The FDA has approved two brands of injectable iron for treating such patients. Nonetheless, a major American health maintenance organization refuses to treat elderly patients with injectable iron, even when it is indicated, unless their anemia is associated with cancer. This may well reflect a public health crisis afflicting many elderly residents of the United States.

关键词： Elderly Geriatric iron Deficiency Anemia Morbidity and Mortality Injectable iron US Public Health American Health Maintenance Organizations

Vaccination against urinary tract infections caused by E. coli

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Advances in Bioscience and Biotechnology 2013年第3期4卷 487-492页

作者： Hartwig Wilhelm Bauer Hira Shams Ricarda Michaela Bauer Urological Clinic Maximilian Urological Clinic LM Universitiy München München Germany

Uropathogenic Escherichia coli (UPEC) causes uncomplicated urinary tract infection (UTI) depicts a prevalent and potentially uncompromising infectious disease. In this analysis, we explained the functions of an immunoproteomics concept to vaccine development that has been successfully employed to recognize vaccine targets in other pathogenic bacteria. Pyelonephritis strains E. coli CFT073 are used for outer membrane isolation mimics urinary tract environment in which iron limitation, osmotic stress, human urine, and exposure to uroepithelial cells are included. During experiments of UTI, the antigens that induce the humoral immune response is to identified, two-dimensional gel electrophoresis are employed for the isolation of outer membrane protein and probed using pooled antisera from 20 CBA/J mice chronically infected with E. coli CFT073. 23 total outer membrane antigens, in which a unique iron compound receptor is included, are reacted with antisera and were identified by mass spectrometry. These antigens comprises of proteins with known functions in UPEC pathogenesis such as, ChuA, iron, IreA, Iha, IutA, and FliC. These all information and data elaborate that these factors are associated with virulence during UTI are directed by antibody response. We also represents that the genes encoding ChuA, iron, hypothetical protein c2482, and IutA are significantly more prevalent among UPEC strains than among fecal-commensal E. coli isolates. Therefore we concluded that, the outer membrane antigens are identified in this study are conserved, could be reflective part for the UTI vaccine generated to induce protective immunity against UPEC infections.

关键词： Pyelonephritis Outer Membrane Antigen iron Compound Receptors

The Role of Replacing CdO by Fe2O3on the Fast Neutron Removal Cross Sections in Cd-Boro Phosphate Glass Shield

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World Journal of Condensed Matter Physics 2013年第1期3卷 62-66页

作者： Hanaa A. Sallam Heba A. Saudy Physics Department Faculty of Science Al-Azhar University Girls Branch Cairo Egypt

This work deals with the application of [MERCSF-N] computer program in calculating the macroscopic effective removal cross-section of fast neutrons, ΣR (cm-1), for two different boro phosphate glass systems: (0.5 - x) CdO-x Fe2O3-0.4 P2O5-0.1 B2O3 and (0.5 - x) B2O3-x Fe2O3-0.1 CdO-0.4 P2O5 (with 0.05 ≤ x ≤ 0.5 by mole), to realize from the role of iron in the attenuation process and hence the usefulness of the glass containing iron as neutrons shielding material. The effect of replacing cadmium and boron oxides by iron oxide has been analyzed which proved that iron is more efficient than cadmium in attenuating and removing fast neutrons and that the presence of small amounts of B2O3 at least 0.1 mole fraction, with iron is needed to aid improving the removal cross-section of iron phosphate glasses. Experimental IR results are developed and used to trace the structural change and confirm the role of iron in the removal cross section.

关键词： iron Phosphate Glasses Fast Neutron Removal Cross-Section

MICROFOSSIL OF EOAPHANOTHECE FROM THE XUANLONG-TYPE iron ORE-DEPOSIT IN NORTHWESTERN HEBEI

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Scientia Geologica Sinica 1997年第3期 142-146页

作者： Hou Kui and Zhu Jingquan Institute of Geology, Chinese Academy of Sciences, Beijing 100029

ＭＩＣＲＯＦＯＳＳＩＬＯＦＥＯＡＰＨＡＮＯＴＨＥＣＥＦＲＯＭＴＨＥＸＵＡＮＬＯＮＧＴＹＰＥＩＲＯＮＯＲＥＤＥＰＯＳＩＴＩＮＮＯＲＴＨＷＥＳＴＥＲＮＨＥＢＥＩＨｏｕＫｕｉａｎｄＺｈｕＪｉｎｇｑｕａｎＩｎｓｔｉｔｕｔ... 详细信息

ＭＩＣＲＯＦＯＳＳＩＬＯＦＥＯＡＰＨＡＮＯＴＨＥＣＥＦＲＯＭＴＨＥＸＵＡＮＬＯＮＧＴＹＰＥＩＲＯＮＯＲＥＤＥＰＯＳＩＴＩＮＮＯＲＴＨＷＥＳＴＥＲＮＨＥＢＥＩＨｏｕＫｕｉａｎｄＺｈｕＪｉｎｇｑｕａｎＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ，Ｃｈｉｎｅｓ...

关键词： ORE-DEPOSIT iron NORTHWESTERN XUANLONG-TYPE EOAPHANOTHECE FROM

Protein and lipid characterization of wheat roots plasma membrane damaged by Fe and H2O2using ATR-FTIR method

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Journal of Biophysical Chemistry 2013年第1期4卷 28-35页

作者： Xin Zhao Xiaoju Yang Yong Shi Guoxiong Chen Xinrong Li Key Laboratory of Stress Physiology and Ecology China Shapotou Desert Research Station Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou China

In plant cells the plasma membrane is a highly elaborated structure that functions as the point of exchange with adjoining cells, cell walls and the external environment. In this study, we investigated the structure and function characteristic of wheat root plasma membrane (PM) as affected by H2O2 and Fe by using fluorescence spectroscopic and attenuated total reflectance infrared (ATR-IR) techniques. The results showed that these oxidant damaged induced an obviously reduced membrane fluidity were observed in the roots PM treated with the 200 μM H2O2, FeSO4, and FeCl3. Computer-aided software analyses of the FTIR spectrum indicated that the content of the α-helices decreased and β-sheet increased in the secondary structures of proteins after exposure to the oxidants of 200 μM H2O2, FeSO4, and FeCl3. The number of P=O and C=C bonds area declined rapidly in the lipids of the membrane under the oxidants stress. These structural alterations might explain the reason of the roots PM instability under most of the abiotic stress.

关键词： Plasma Membrane Fourier Transforms Infrared (FTIR) Attenuated Total Reflectance (ATR) H2O2 iron

SURFACE　SPECIES　OVER　Zro2　SUPPORTED　Ru－Fe　BIMETALLIC　CATALYSTS　IN　CO　HYDROGENATION

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Chinese Journal of Catalysis 1995年第5期 341-342页

作者： Xu, Hui-zhen Guo, Zhong-ru (Department of Chemical Engrineering, Zhejiang University Of Technology, Hangzhou 310014)Wang, Hai-you and Lin, Zhong-yu(Stale Key Laboratory for Physical Chemistry of the Solid Surface,Xiamen University, Xianten 361005)

ＳＵＲＦＡＣＥ　ＳＰＥＣＩＥＳ　ＯＶＥＲ　ＺｒｏＳＵＰＰＯＲＴＥＤ　Ｒｕ－Ｆｅ　ＢＩＭＥＴＡＬＬＩＣ　ＣＡＴＡＬＹＳＴＳ　ＩＮ　ＣＯ　ＨＹＤＲＯＧＥＮＡＴＩＯＮＳＵＲＦＡＣＥＳＰＥＣＩＥＳＯＶＥＲＺｒｏＳＵＰＰＯＲＴ... 详细信息

ＳＵＲＦＡＣＥ　ＳＰＥＣＩＥＳ　ＯＶＥＲ　ＺｒｏＳＵＰＰＯＲＴＥＤ　Ｒｕ－Ｆｅ　ＢＩＭＥＴＡＬＬＩＣ　ＣＡＴＡＬＹＳＴＳ　ＩＮ　ＣＯ　ＨＹＤＲＯＧＥＮＡＴＩＯＮＳＵＲＦＡＣＥＳＰＥＣＩＥＳＯＶＥＲＺｒｏＳＵＰＰＯＲＴＥＤＲｕ－ＦｅＢＩＭＥＴＡ...

关键词： zirconia ruthenium iron bimetallic catalyst surface species carbon monoxide hydrogenation

Synthesis and structure of a novel MoFe_4S_4 cubane-like cluster (Me_3PhCH_2N)_2[MoFe_4S_4(SC_6H_(11))_7]

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Science China Chemistry 1998年第3期41卷 301-308页

作者：陈昌能邓玉恒洪茂椿温庭斌张纯喜刘秋田卢嘉锡陈小明康北笙周忠远麦松威 State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou China Department of Chemistry Zhongshan University Guangzhou China Department of Chemistry The Chinese University of Hong Kong Shatin New Territories Hong Kong China

A novel (Me 3PhCH 2N) 2[MoFe 4S 4(SC 6H 11 ) 7] cubane like cluster was obtained from a reaction system including (NH 4) 2MoS 4, FeCl 2 and NaSC 6H 11 in methanol, and characterized by X ray crystallography. The title compound crystallizes in triclinic space group P 1 with a =1.523 1(3), b =1.610 5(3), c =1.838 3(4) nm, α =77.18 (3)°, β =75.17(3)°, γ =64.60 (3)°, and Z =2. Also included in this paper are the discussions on the variation of the reaction products obtained from the participation of cyclohexylthiolate and on the changes of the structural features of the products.

关键词： molybdenum iron sulfur cluster single cubane cluster crystal structure iron cluster.

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