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Chinese Journal of Structural Chemistry 2007年第2期26卷 143-148页

作者： tong yi-ping Department of Chemistry Hanshan Normal University Chaozhou 521041 China

The title compound has been synthesized and characterized crystallographicaUy. It is a co-crystal consisting of two different neutral zinc（H） complexes with Hbpbm （Hbpbm = 4- bromo-2-（benzimidazol-2-yl）phenol） and Hnpbm （Hnpbm = 2-（1-butylbenzimidazol-2-yl）phenol）. One is a monomeric mixed-ligand complex of [Zn（bpbm）（npbm）] 1 and the other a dimer of [Zn2（npbm）4] 2 with their ratio of 2：1. Thus the overall formula for the title compound is 21.2. Adjacent 1 and 2 are connected to each other by intermolecular hydrogen bonding interactions in the lattice. The crystal data： monoclinic, space group P21/c, a = 15.0141（12）, b = 20.9941（17）, c = 18.4686（15） A, β = 97.445（2）°, V = 5772.4（8） A^3, Mr= 2429.68, Z = 2, Dc = 1.398 g/cm^3,μ = 1.579 -1 mm , F（000） = 2504, R = 0.0637 and wR = 0.1771 for 6464 observed reflections （I 〉 2σ（I））. The geometrical structure for 1 has also been theoretically optimized and compared with the experimental one.

关键词： zinc complex co-crystal structure 4-bromo-2-(1-butylbenzimidazol-2-yl)phenol 2-(1-butylbenzimidazol-2-yl)phenol

Transgenic approaches for improving use efficiency of nitrogen, phosphorus and potassium in crops

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Journal of Integrative Agriculture 2017年第12期16卷 2657-2673页

作者： TENG Wan HE Xue tong yi-ping State Key Laboratory for Plant Cell and Chromosome Engineering/Institute of Genetics and Developmental Sciences ChineseAcademy of Sciences Beijing 100101 P.R.China

The success of the Green Revolution largely relies on fertilizers, and a new Green Revolution is very much needed to use fertilizers more economically and efficiently, as well as with more environmental responsibility. The use efficiency of nitrogen, phosphorus, and potassium is controlled by complex gene networks that co-ordinate uptake, re-distribution, assimilation, and storage of these nutrients. Great progress has been made in breeding nutrient-efficient crops by molecularly engineering root traits desirable for efficient acquisition of nutrients from soil, transporters for uptake, redistribution and homeostasis of nutrients, and enzymes for efficient assimilation. Regulatory and transcription factors modulating these processes are also valuable in breeding crops with improved nutrient use efficiency and yield performance.

关键词： nutrient use efficiency nitrogen phosphorus potassium transgenic approach crop

Characterization of Quantitative Trait Loci for Grain Minerals in Hexaploid Wheat (Triticum aestivum L.)

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Journal of Integrative Agriculture 2013年第9期12卷 1512-1521页

作者： SHI Rong-li tong yi-ping JING Rui-lian ZHANG Fu-suo ZOU Chun-qin Center for Resources Environment and Food Security/Department of Plant NutritionChina Agricultural University State Key Laboratory of Plant Cell and Chromosome Engineering Ministry of Science and Technology/Institute of Genetics and Developmental BiologyChinese Academy of Sciences Institute of Crop Science Chinese Academy of Agricultural Sciences

Wheat is an important source of essential minerals for human body. Breeding wheat with high grain mineral concentration thus benefits human health. The objective of present study was to identify quantitative trait loci （QTLs） controlling grain mineral concentration and to evaluate the relation between nitrogen （N） and other essential minerals in winter wheat. Wheat grains were harvested from field experiment which conducted in China and analyzed for this purpose. Forty-three QTLs controlling grain mineral concentration and nitrogen-related traits were detected by using a double haploid （DH） population derived from winter wheat varieties Hanxuan 10 and Lumai 14. Chromosomes 4D and 5A might be very important in controlling mineral status in wheat grains. Significant positive correlations were found between grain nitrogen concentration （GNC） and nutrients Fe, Mn, Cu, Mg concentrations （FeGC, MnGC, CuGC, MgGC）. Flag leafN concentration at anthesis （FLNC） significantly and positively correlated with GNC, FeGC, MnGC, and CuGC. The study extended our knowledge on minerals in wheat grains and suggested which interactions between minerals should be considered in future breeding program.

关键词： grain minerals nitrogen QTLs winter wheat

Wheat PROTON GRADIENT REGULATION 5 is Involved in Tolerance to Photoinhibition

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Journal of Integrative Agriculture 2014年第6期13卷 1206-1215页

作者： WANG Yuan-ge HE Xue MA Wen-ying ZHAO Xue-qiang LI Bin tong yi-ping The State Key Laboratory for Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology Chinese Academy of Sciences

Wheat （Triticum aestivum L.） often experiences photoinhibition due to strong light during the grain filling stage. As such, increasing the tolerance of wheat to photoinhibition is very desirable in breeding efforts focused on increasing grain yields. Previous reports have suggested that PROTON GRADIENT REGULATION 5 （PGR5） plays a central role in the generation of a proton gradient across the thylakoid membrane （ApH） and in acclimation to high light intensity conditions. Three PGR5 homoeologues were isolated from wheat, and mapped onto chromosomes 7A, 7B and 7D, respectively. The TaPGR5s shared highly similar genomic sequences and gene structures. The transcripts of TaPGR5s were found to be abundantly expressed in the flag leaves, and were transiently up-regulated by treatment with high light. High light treatment inhibited the net photosynthetic rate （Pn） and the maximal quantum yield ofphotosystem II （Fv/Fm）. Further, these inhibitions were more evident in the leaves with reduced expression of TaPGR5s achieved using virus-induced gene silencing methods. Moreover, reducing TaPGR5 expression impaired the induction of non-photochemical quenching （NPQ）, which caused more severe cell membrane damage and lipid peroxidation in high light. Additionally, we observed that TaPGR5s transcripts were more abundantly expressed in the wheat genotypes with higher ms-delayed light emission （ms-DLE）, a value reflecting transthylakoid ApH. These results suggested that TaPGR5s play important roles in the tolerance of wheat to photoinhibition.

关键词： wheat TaPGR5 high light stress photoinhibition photosynthesis

YAG∶Ce^(3+)荧光粉的高温固相合成及发光研究

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光谱学与光谱分析 2013年第11期33卷 2930-2934页

作者：童义平陈腾惠州学院化学工程系广东惠州516007

采用高温固相法合成YAG∶Ce3+发光材料。用正交试验法设计实验,确定Ce3+掺杂量、焙烧温度、焙烧时间的最佳条件。研究结果发现:(1)荧光粉发光强度的影响因素排列顺序是:焙烧温度>焙烧时间>Ce离子掺杂量。其中焙烧温度的影响最为关键,其... 详细信息

采用高温固相法合成YAG∶Ce3+发光材料。用正交试验法设计实验,确定Ce3+掺杂量、焙烧温度、焙烧时间的最佳条件。研究结果发现:(1)荧光粉发光强度的影响因素排列顺序是:焙烧温度>焙烧时间>Ce离子掺杂量。其中焙烧温度的影响最为关键,其次是焙烧时间的影响,而Ce离子掺杂量的影响较小。(2)用高温固相法制备YAG∶Ce3+荧光粉的最佳工艺参数为:焙烧温度1 600℃,Ce离子掺杂量0.10mol,焙烧时间4h,即A5B5C3组合。依此条件,合成的荧光粉发光最好。另一个最优组合是:焙烧温度1 600℃,Ce离子掺杂量0.08mol,焙烧时间4h,即A5B4C3组合。依此条件,合成的荧光粉发光也很好,但稍弱于A5B5C3组合。对合成YAG∶Ce3+发光材料的激发(343和467nm)、发射(529nm)光谱的峰形变化及跃迁性质进行了深入分析及指认。

关键词：高温固相合成法烧结荧光粉 YAG Ce^3+

CaAl_(12)O_(19):xMn^(4+)红色荧光粉的合成及发光研究

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光谱学与光谱分析 2014年第12期34卷 3210-3213页

作者：童义平严嘉燕惠州学院化学工程系广东惠州516007

用高温固相法合成了CaAl12O19∶xMn4+(x=0.0~0.001 84mol)红色荧光粉,研究了反应温度及Mn4+掺杂量对荧光强度的影响,通过正交设计优化的最佳合成条件是1 500℃,掺杂量x=0.014 7mol。荧光粉发射深红色光,其激发位于470nm处,而发射主峰位... 详细信息

用高温固相法合成了CaAl12O19∶xMn4+(x=0.0~0.001 84mol)红色荧光粉,研究了反应温度及Mn4+掺杂量对荧光强度的影响,通过正交设计优化的最佳合成条件是1 500℃,掺杂量x=0.014 7mol。荧光粉发射深红色光,其激发位于470nm处,而发射主峰位于656nm,其两侧的肩峰(643,666nm)为声子副带发射。光物理过程分析表明,470nm的激发为配体场的4 A2→4 T2的跃迁(d→d带),而656nm的发射属于2 E→4 A2的跃迁。由于470nm激发峰与市场LED蓝光芯片的460nm发射十分匹配,而且又是发射LED芯片缺少的红光,因此CaAl12O19∶xMn4+荧光粉十分适合用于LED光源。

关键词：高温固相法掺锰(Ⅳ)铝酸钙荧光粉正交设计 Tanabe-Sugano图

Hitchhiking Effect Mapping: A New Approach for Discovering Agronomic Important Genes

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Agricultural Sciences in China 2007年第3期6卷 255-264页

作者： ZHANG Xue-yong tong yi-ping YOU Guang-xia HAO Chen-yang GE Hong-mei WANG Lan-fen LI Bin DONG Yu-shen LI Zhen-sheng Institute of Crop Sciences Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Germplasm ＆ Biotechnology Ministry of Agriculture/National Facility for Crop Gene Resources and Genetic Improvement Beijing 100081 P.R.China State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 P.R.China

Besides the natural selection, the crops cultivated today have experienced two episodes of strong artificial selection, domestic and modern breeding. Domestication led to giant genetic structure differentiation between cultivars and their wild species, while modern breeding made further genetic structure differentiation between the modern varieties and the landraces. In a population, diversity of the loci under strong selection is significantly lower than that of other loci. At the same time, diversity in the genomic regions flanking these selected loci also declines in the process of selection. This phenomenon is called hitchhiking effects or selection sweep in genetics. Genomic regions with selection sweep （haplotype block） could be detected after draft genome scanning （genome typing） with molecular markers in a number of released varieties or natural populations. Marker/trait association analysis in these regions would detect the loci （or QTLs） even the favored alleles （genes） in breeding or natural adaptation. Fine scanning of these genomic regions would help to determine the sizes of haplotype blocks and to discover the key genes, thereby providing very valuable information for isolation of the key genes and molecular design of new varieties. Establishment of high density genetic linkage maps in the major crops and availability of high throughput genotyping platform make it possible to discover agronomic important genes through marker/trait association analysis. On the basis of available publications, we give a brief introduction of the hitchhiking effect mapping approach in this paper using plant height, 1 000-grain weight, and phosphorus-deficiency tolerance as examples in wheat.

关键词： domestication & breeding hitchhiking effects marker/trait association analysis gene discovery

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燃烧法合成掺锰高铝酸钙红色荧光粉的研究

光谱学与光谱分析 2016年第10期36卷 3211-3214页

作者：冯颖童义平黎文伟惠州学院化学工程系广东惠州516007

以脲素为燃烧剂,采用燃烧法在较低引发温度下快速合成了CaAl12O19∶xMn4+发光粉体。采用正交分析法考查了煅烧温度、Mn4+掺杂量、燃烧剂用量和煅烧时间等合成条件对荧光粉发光强度的影响。实验结果表明:煅烧温度1 200℃,Mn4+掺杂量2%,... 详细信息

以脲素为燃烧剂,采用燃烧法在较低引发温度下快速合成了CaAl12O19∶xMn4+发光粉体。采用正交分析法考查了煅烧温度、Mn4+掺杂量、燃烧剂用量和煅烧时间等合成条件对荧光粉发光强度的影响。实验结果表明:煅烧温度1 200℃,Mn4+掺杂量2%,燃烧剂/CaAl12O19摩尔比为50∶1,煅烧时间5h为最佳合成工艺,制得的荧光粉的发射强度为95.8。该荧光粉由于Mn4+的2 E—4 A2跃迁,在643和656nm呈现强红色发光,其中656nm为最大发射峰;在470nm处的最大激发峰是属于Mn4+配位场的4 A2—4 T2跃迁,470nm激发峰可以与LED芯片的465nm发射相匹配。

关键词：燃烧法 CaAl12O19 正交分析法白光LED

微波辅助溶胶凝胶法合成Gd_(0.4)(MoO_4)_3:1.6Eu^(3+)红色荧光粉及其发光性能的研究

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人工晶体学报 2016年第4期45卷 1024-1028页

作者：冯颖童义平文思惠州学院化学工程系惠州516007

本文以柠檬酸为络合剂,采用微波辅助溶胶凝胶法制备了微米粒径的Gd_(0.4)(MoO_4)_3:1.6Eu^(3+)红色荧光粉;采用X射线粉末衍射仪、扫描电子显微镜和荧光光谱仪等对样品进行了分析和表征,讨论了荧光粉的合成方法对其表面形貌和发光性能的... 详细信息

本文以柠檬酸为络合剂,采用微波辅助溶胶凝胶法制备了微米粒径的Gd_(0.4)(MoO_4)_3:1.6Eu^(3+)红色荧光粉;采用X射线粉末衍射仪、扫描电子显微镜和荧光光谱仪等对样品进行了分析和表征,讨论了荧光粉的合成方法对其表面形貌和发光性能的影响。最终将该样品与InGaN芯片结合制成发光二极管。实验结果表明:采用该法合成的具有类白钨矿结构的Gd_(0.4)(MoO_4)_3:1.6Eu^(3+)红色荧光粉为1~2μm的类球状小颗粒,且颗粒均匀,具有较窄的粒度分布,有利于LED芯片涂覆。荧光光谱显示该产品在395 nm具有强吸收峰,可与近紫外InGaN芯片相匹配,是一种可用于近紫外芯片激发的白光LED红色荧光粉。与InGaN芯片结合制成的发光二极管在617 nm处发射出可被肉眼观测的强红光。

关键词：微波辅助溶胶凝胶法红色荧光粉白光LED

概率神经网络和FTIR光谱用于食道癌的辅助分析

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化学研究与应用 2006年第5期18卷 498-501页

作者：童义平林燕文韩山师范学院化学系广东潮州521041 韩山师范学院生物系广东潮州521041

利用正常与相应癌化食道组织的主要FTIR特征峰vas,CH3、vs,CH2、σCH2、vaspo4^-、vc-o、vs,po2^-及vs,磷酸化蛋白作为概率神经网络的输入向量，对网络的主要参数（网络径向基函数分布spread（0～5））、输入向量和网络表现（mean accur... 详细信息

利用正常与相应癌化食道组织的主要FTIR特征峰vas,CH3、vs,CH2、σCH2、vaspo4^-、vc-o、vs,po2^-及vs,磷酸化蛋白作为概率神经网络的输入向量，对网络的主要参数（网络径向基函数分布spread（0～5））、输入向量和网络表现（mean accurate rate of recognition）之间的关系进行了研究。主要结论如下：i）无论输入向量是哪种特征频率的组合，其平均识别正确率都高于71．40％；ii）当输入向量为特征频率vs,po2、vs磷酸化蛋白或vs-0、va,po2、vs,磷酸化蛋白时，网络表现较佳，平均识别正确率较好。当spread介于1．4－2．3时，两者均达到网络具有的最高平均识别正确率（85．71％）；iii）大多数情况下。网络的平均识别正确率与spread之间呈现二个高峰的特征，即spread介于0．1～0．3和1．5，5．0之间时，网络均具有较高的平均识别正确率。研究表明，以傅里叶变换红外光谱的主要特征峰为概率神经网络的输入向量，用于食道组织样品的癌化识别分析是完全可能的，其平均识别正确率可达85．71％。

关键词：概率神经网络傅里叶变换红外光谱食道癌平均识别正确率