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Effects of Citral on Aspergillus flavus Spores by Quasi-elastic Light Scattering and Multiplex Microanalysis Techniques

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Acta Biochimica et Biophysica Sinica 2004年第4期36卷 277-283页

作者： Man LUO1,2, Li-Ke JIANG2, Yao-Xiong HUANG3, Ming XIAO4, Bo LI4, and Guo-Lin ZOU1* 1college of life sciences, Wuhan university, Wuhan 430072, china 2college of life sciences, anhui agricultural university, hefei 230036, china 3 Institute of Biomedical Engineering, Ji’nan university, Guangzhou 510632, china 4Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, the Institute of Biodiversity Science, Fudan university, Shanghai 200433, china college of life sciences Wuhan UniversityWuhan 430072 China college of life sciences Anhui Agricultural UniversityHefei 230036 China Institute of Biomedical Engineering Ji'nan UniversityGuangzhou 510632 China Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering the Institute of Biodiversity Science Fudan UniversityShanghai 200433 China

Citral refined from Litsea cubeba oil has been found to have a strong influence on fungi, especially Aspergillus flavus. Multiplex microanalysis and quasi-elastic light scattering techniques were applied to study the effects of citral on Aspergillus flavus spores from the levels of membrane, organelle and intracellular macromolecule. It was found that citral injured the wall and the membrane of A. flavus spore, resulting in decrease of its elasticity. After entering the cell, citral not only influenced the genetic expression of mitochondrion reduplication and its morphology, but also changed the aggregation of protein-like macromolecules. As a result, cells, organelles and macromolecules lost their normal structures and functions, eventually leading to the loss of germination ability of A. flavus spores. Since Litsea cubeba oil as food additive and antifungal agent is safe and less poisonous, it is important to elucidate the inhibitory mechanisms of Litsea cubeba oil on the germination ability of A. flavus spore.

关键词： citral Aspergillus flavus spore multiplex microanalysis techniques quasi-elastic light scattering technique

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Spatio-temporal variations of the bacterioplankton community composition in Chaohu Lake, china

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Progress in Natural Science:Materials International 2008年第9期18卷 1115-1122页

作者： Chaoling Wei a,, Sumin Bao b, Xinyan Zhu c, Xiangming Huangd a School of Environmental and Resource sciences, anhui agricultural university, 130 West Changjiang Road, hefei 230036, china b School of life sciences, anhui agricultural university, hefei 230036, china c School of Forestry and Landscape Architecture, anhui agricultural university, hefei 230036, china d Chaohu Environmental Protection Monitoring Center, Chaohu 238000, china School of Environmental and Resource sciences Anhui Agricultural University 130 West Changjiang Road Hefei 230036 China School of life sciences Anhui Agricultural University Hefei 230036 China School of Forestry and Landscape Architecture Anhui Agricultural University Hefei 230036 China Chaohu Environmental Protection Monitoring Center Chaohu 238000 China

Despite considerable attention paid to Chaohu Lake in china, the dynamics of bacterioplankton community composition (BCC) on spatial and seasonal scales are poorly *** this study, water samples were collected from autumn 2006 to summer 2007 at five positions in Chaohu Lake with difierent trophic *** of these samples was determined by both the PCR amplification of the 16S rDNA gene and the denaturing gradient gel electrophoresis (DGGE).The abundance and diversity of bacterioplankton communities at difierent sampling positions showed similar seasonal *** BCCs in the samples varied substantially, and the pattern of changes indicated that the seasonal difierence might have a significant impact on the BCC’s structure in the *** correspondence anal-ysis (CCA) on the DGGE patterns and physicochemical parameters indicated that the temperature and the levels of 5-d biochemical O2 demand (BOD5), NH3-N, CODMn, total nitrogen, total phosphorous, and dissolved oxygen significantly infiuenced the BCC, and four of the seven variables were related to the level of *** results indicate that eutrophic status and season are the most infiu-ential factors in determining BCC in Chaohu Lake.

关键词： Chaohu Lake Bacterioplankton community composition Spatial and seasonal dynamics

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ON　THE　UPPER　ESTIMATES　OF　FUNDAMENTAL　SOLUTIONS　OF　PARABOLIC　EQUATIONS　ON　RIEMANNIAN　MANIFOLDS

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Chinese Annals of Mathematics,Series B 1995年第1期16卷 119-130页

作者： LI JIAYU SHAO XIN (Departmellt of Mathematics, anhui university, hefei 230039, china.Basic Department, anhui agricultural college, hefei 230036, china.) anhui UNIV DEPT MATHHEFEI 230039PEOPLES R CHINA anhui AGR COLL DEPT BASICHEFEI 230036PEOPLES R CHINA

The authors first derive the gradient estimates and Harnack inequalties for positive solutions of the equation on(x, t)An(x, t) + b(x, t)' ac(￣, t) + h(x, t)u(x, t) ￣ m ￣ 0on complete Riemannian manifolds, and then derive the upper bounds of any positive L2fundamental solution of the equation when h(x, t) and b(x, t) are independent of t.

关键词： Parabolic equation Gradient estimate Harnack inequality Fundamentalsolution Riemannian manifolds.

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Characteristics of N Mineralization in Urban Soils of hefei,East china

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Pedosphere 2010年第2期20卷 236-244页

作者： ZHANG Kai,XU Xiao-Niu and WANG Qin School of Forestry and Landscape Architecture,anhui agricultural university,hefei 230036 (china) School of Forestry and Landscape Architecture Anhui Agricultural University Hefei 230036 (China)

Nitrogen cycling has been poorly characterized in urban *** in-situ buried bag incubation technique was used to quantify net rates of N mineralization and nitrification in soils of two urban sites,a street greening belt and a university campus,and a suburban site,a forest park,in hefei,East *** average concentration of extractable NO 3 in the surface soil (0-10 cm) was significantly higher at the urban sites than the suburban park site,whereas extractable NH + 4 concentration was significantly higher at the suburban park site than the urban *** forest park soil had greater potential N mineralization (148.1 μg N cm 3) than the soils from the campus (138.3 μg N cm 3) and street (99.8 μg N cm 3).The net mineralization rates varied between 1.63 and 2.69 μg N cm 3 d 1 and net nitrification rates between 0.82 and 1.02 μg N cm 3 d 1 at the suburban forest park site,but the rates varied from 1.27 to 2.41 μg N cm 3 d 1 and from 1.07 to 1.49 μg N cm 3 d 1,respectively,at the urban campus *** net mineralization and nitrification rates were lower during dry *** from regression analysis indicated that net N mineralization was significantly and positively correlated with soil moisture and soil C/N ratio,and was negatively correlated with soil *** nitrification was,however,significantly and negatively correlated with soil moisture and soil C/N ratio,and was positively correlated with soil *** relative nitrification was 0.763,indicating the dominance of nitrate cycling relative to ammonium cycling at the urban *** urban soils had the great potential for N losses compared to the suburban soils.

关键词： nitrification nitrogen cycling soil properties

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Differentially Expression of Tual,a Tubulin-encoding Gene,during Flowering of Tea Plant Camellia sinensis (L.) *** Using cDNA Amplified Fragment Length Polymorphism Technique

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Acta Biochimica et Biophysica Sinica 2006年第9期38卷 653-662页

作者： Wan-Ping FANG~(1,2) Chang-Jun JIANG~1* Mei YU~1 Ai-Hua YE~1 Zhao-Xia WANG~(1,3) 1 Key Laboratory of Tea Biochemistry and Biotechnology,Ministry of Agriculture,anhui agricultural university,hefei 230036,china 2 college Of Horticulture,Nanjing Agriculture university,Nanjing 210095,china 3 Auhui Institute of Education,hefei 230036,china Key Laboratory of Tea Biochemistry and Biotechnology Ministry of Agriculture Anhui Agricultural UniversityHefei 230036 China college Of Horticulture Nanjing Agriculture UniversityNanjing 210095 China Auhui Institute of Educationhefei 230036 China

The complementary DNA （cDNA） amplified fragment length polymorphism technique wasused to isolate transcript-derived fragments corresponding to genes involved in the flowering of tea *** sequence analysis of an approximately 300 bp differential fragment amplified by primer combi-nation E11M11revealed 80%-84% similarity to the corresponding part of an α-tubulin gene of other *** complete cDNA sequence of this α-tubulin was cloned by the rapid amplification of cDNA ends technique;its full length is 1537 bp and contains an open reading frame of 450 amino acid residues with two N-glycosylation sites and four protein kinase C phosphorylation *** deduced amino acid sequences didshow significant homology to the α-tubulin from other plants that has been reported to be a pollen-specificprotein and could be correlated with plant cytoplasm-nucleus-interacted male *** named this completecDNA *** nucleotide and amino acid sequence data of Tual have been recorded in the GenBanksequence database with the accession *** Tual gene was cloned into the pET-32aexpression system and expressed in Escherichia coli BL21trxB（DE3）.The molecular weight of expressedprotein was deduced to be approximately 49 *** blot analysis was used to identify the temporalexpression of Tual in tea *** studies of the effect of Tual protein on pollen tube growth indicatedthe Tual solution obviously promoted the growth of tea pollen tube.

关键词： cDNA-AFLP Camellia sinensis flower bud α-tubulin Western blot pollen

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Study on transmittance spectra of ITO thin films by ellipsometric method

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Science china(Technological sciences) 2010年第7期53卷 1893-1896页

作者： SUN ZhaoQi1, CAO ChunBin123, CAI Qi1 & SONG XuePing1 1 School of Physics and Material Science, anhui university, hefei 230039, china 2 School of sciences, anhui agricultural university, hefei 230036, china 3 Key Laboratory of Opto-electronic Information Acquisition and Manipulation, Ministry of Education, hefei 230036, china School of Physics and Material Science Anhui University Hefei China School of sciences Anhui Agricultural University Hefei China Key Laboratory of Opto-electronic Information Acquisition and Manipulation Ministry of Education Hefei China

ITO films with thicknesses (134+8) nm, grown on glass substrates by sputtering method, were post-annealed at the temperatures of 100, 200, 300 and 400°C for 1 h, respectively. The as-deposited ITO film was amorphous, but crystallized with annealing at elevated temperatures, as demonstrated by X-ray diffraction. The transmittance spectra of all samples were obtained and subsequently simulated by means of spectroscopic ellipsometry. The optical constants n and k of the films were extracted. With the annealing temperature increasing, the optical constants n and k of the films firstly decreased then increased in the whole investigated wavelength range. The optical band gaps of all films were evaluated and they varied between 3.74 and 3.93 eV.

关键词： ITO films optical constants transmittance spectra spectroscopic ellipsometry analysis

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Studies on Poplar Parthenogenesis Induced by Laser

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Chinese Journal of Lasers 1995年第1期B4卷 91-95页

作者： CHEN Zhengu YU Wansu XU Chenglin LIU Xiaogan (Laser Laboratory,Biotechnoloyg Centre,anhui agricultural university, hefei 230036,china) anhui agricultural Univ Hefei China

ＳｔｕｄｉｅｓｏｎＰｏｐｌａｒＰａｒｔｈｅｎｏｇｅｎｅｓｉｓＩｎｄｕｃｅｄｂｙＬａｓｅｒＳｔｕｄｉｅｓｏｎＰｏｐｌａｒＰａｒｔｈｅｎｏｇｅｎｅｓｉｓＩｎｄｕｃｅｄｂｙＬａｓｅｒ￥ＣＨＥＮＺｈｅｎｇｕ；ＹＵＷａｎｓｕ；... 详细信息

ＳｔｕｄｉｅｓｏｎＰｏｐｌａｒＰａｒｔｈｅｎｏｇｅｎｅｓｉｓＩｎｄｕｃｅｄｂｙＬａｓｅｒＳｔｕｄｉｅｓｏｎＰｏｐｌａｒＰａｒｔｈｅｎｏｇｅｎｅｓｉｓＩｎｄｕｃｅｄｂｙＬａｓｅｒ￥ＣＨＥＮＺｈｅｎｇｕ；ＹＵＷａｎｓｕ；ＸＵＣｈｅｎｇｌｉｎ；ＬＩＵＸｉａ...

关键词： poplar ovary callus rate differetiation rate aberration frequence

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Bioaccumulation of hexachlorobenzene in Eisenia foetida at dierent aging stages

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Journal of Environmental sciences 2009年第7期21卷 948-953页

作者： GAO Hongjian School of Resources and Environmental Science, anhui agricultural university, hefei 230036, china.

The impacts of contact time on the extractability, the availability of bexachlorobenzene （HCB） in different soils （paddy soil, red soil, and fluvo-aquic soil） and bioaccumulation in earthworm Eisenia foetida were investigated under controlled conditions in laboratory. Results indicated that the aging rate of HCB displaying a biphasic character in different soils： a rapid aging in the first 60 d followed by a slow aging in the next 120 d incubation time. Moreover, most of extractable HCB （about 90%） decline occurred in the first 60 d after HCB was spiked into the soils. The aging rate of HCB in the paddy soil was higher than that in the fluvo-aquic soil or the red soil. The amount of HCB accumulated in the earthworms and its accumulative ability, expressed as a bioaccumulation factor （BAF）, declined as the aging time increased from 1 to 180 d. Although the extractable HCB decreased with increasing residence time in soil, much of HCB could still be accumulated by earthworms （457.6-984.3 ng/g） through bioaccumulation, which poses a potential risk to soil ecological safety.

关键词： HCB soil extractability bioavailability earthworm

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Phylogenetic placement of Cynomorium in Rosales inferred from sequences of the inverted repeat region of the chloroplast genome

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Journal of Systematics and Evolution 2009年第4期47卷 297-304页

作者： ~(1,2)Zhi-Hong ZHANG ~3Chun-Qi LI ~2Jianhua LI~* 1(School of life sciences,Sun Yat-sen university,Guangzhou 510275,china) 2(Arnold Arboretum of Harvard university,Cambridge,MA 02138,USA) 3(college of life sciences,Henan agricultural university,Zhengzhou 450002,china) (School of life sciences Sun Yat-sen University Guangzhou 510275 China) (Arnold Arboretum of Harvard university Cambridge MA 02138 USA) (college of life sciences Henan Agricultural University Zhengzhou 450002 China)

Cynomorium is a herbaceous holoparasite that has been placed in Santalales,Saxifragales,Myrtales, or *** inverted repeat(IR)region of the chloroplast genome region is slow evolving and,unlike mitochondrial genes,the chloroplast genome experiences few horizontal gene transfers between the host and parasite. Thus,in the present study,we used sequences of the IR region to test the phylogenetic placements of Cynomorium. Phylogenetic analyses of the chloroplast IR sequences generated largely congruent ordinal relationships with those from previous studies of angiosperm phylogeny based on single or multiple *** was closely related to Caryophyllales and *** formed a clade where Peridiscus was sister to the remainder of the order, whereas Paeonia was sister to the woody clade of *** is not closely related to Santalales, Saxifragales,Myrtales,or Sapindales;instead,it is included in Rosales and sister to *** various placements of the holoparasite on the basis of different regions of the mitochondrial genome may indicate the heterogeneous nature of the genome in the ***,it is unlikely that the placement of Cynomorium in Rosales is the result of chloroplast gene transfer because Cynomorium does not parasitize on rosaceous plants and there is no chloroplast gene transfer between Cynomorium and Nitraria,a confirmed host of Cynomorium and a member of Sapindales.

关键词： Bayesian analyses chloroplast inverted repeat Cynomorium holoparasite maximum likelihood parsimony Rosales.

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Microstructure and optical properties of nano Ag-ITO films

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Science china(Technological sciences) 2010年第5期53卷 1266-1270页

作者： XIAO Lei1,3,CAO ChunBin2,3,SONG XuePing1,3,MENG FanMing1,3 & SUN ZhaoQi1,3 1 School of Physics and Material Science,anhui university,hefei 230039,china 2 School of sciences,anhui agricultural university,hefei 230036,china 3 Key Laboratory of Opto-Electronic Information Acquisition and Manipulation,Ministry of Education,hefei 230039,china School of Physics and Material Science Anhui University Hefei China Key Laboratory of Opto-Electronic Information Acquisition and Manipulation Ministry of Education Hefei China School of sciences Anhui Agricultural University Hefei China

Nano Ag-ITO films with Ag volume fraction of 0.3%-1.0% were prepared by radio-frequency magnetron co-sputtering and analyzed by X-ray diffraction,scanning electron microscopy and ultraviolet-visible *** analysis shows that the films are composed of polycrystalline ITO matrix embedded with Ag nanoparticles with a mean size of 60-100 *** spectra of Ag-ITO films indicate that the visible light transmissivity of the films decreases with increasing the Ag *** transmissivity of the annealed films is higher than that of the as-deposited *** volume 0.3% Ag-ITO films have the highest light *** annealed films exhibit lower light absorptance than as-deposited films.A surface plasmon resonance(SPR) peak of volume 0.3% Ag-ITO films is located around 510 *** with the annealed ITO film,the annealed volume 0.3% Ag-ITO film shows 10% higher reflectivity,while its transmittance is almost the same as that of the annealed ITO film,indicating its potential application in new-type transflective displays.

关键词： nanoparticle films microstructure optical properties transflective displays

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