2005年《科技成果纵横》杂志主要目次索引

关注知识产权——科技经济竞争的制高点································································1∶4-35孵化器——创业者的摇篮··········································································2∶4-27自主创新——民族进步的灵魂·······························································…     

《洛阳大学学报》第18卷总目录

论程颐理学思想的传承···········································································……卢连章(l一1)论洛阳古代墓葬在我国古代墓葬中的地位···················································……董延寿(1一6)陆机入洛疑案新断········································································…     

阜阳师范学院学报(自然科学版)第17卷第1~4期(卷终)总目次

第1期非线性代数,阶梯算符与氢原子(英)·····································································……倪致祥(l)锰氧化物lao.55Ca0.‘SMno3输运性质的研究················································……陈勤潘亚林(4)一种分子量标准的引物定位合成·········,·····················································……崔…     

贵州大学学报(自然科学版)1991年总目录

求解色散方程的两类双步长指数型格式·······························································,···……张大凯(1.1)FEBrowder不动点定理及其在对策和经济中的应用················································……俞建(l7)求解对流扩散方程的两个半显差分格式·············································,···,,····,···········…     

《西北师范大学学报》第27卷总目次

·数学与计算机科学·价V一环的拟内射性刻划··························································,········“····”·”·”·”·”…刘仲奎(卜l)广义拟右交错Bc卜代数及其结构···········“·············~·············”·················一杨永保张小红(I·7)一类发展方程的整体解与周期解·“·····,··························”············…     

苏州大学学报(自然科学)第10卷(1994)总目录

第一期一类等紧空间·················································································……I:次Li己nard系统奇点的Hopf分支与五次Li曲arcl系统极限环的存在问题·····一关于粗范数的注记···················...·····················································……有非局部性项的非线性热方程正解的破碎率················…     

《西北师范大学学报》(自然科学版)第29卷总目次

·数学与计算机科学·F一纯子模······································································································……刘仲奎(1一l)连续遍历性与伪轨跟踪性质的一个注记································,······························……易建析(l·8)双星对泛优美的充要条件··························…     

《山东师大学报》(自然科学版)1990年 第5卷 总目次

第一期Banach空间积分一微分方程初值问题的解集············································……庄万(1)偶数阶连续分布变偏差泛函微分方程的振动性···········································……傅希林(5)Szufla引理的改进及应用·····································································……崔长军(12)自映射的弱可迁性·············…     

佛山大学学报1994年第12卷总目次

第l期珠江三角洲党的建设对毛泽东建党思想弱新发展··································,,············……旅志翔(l)关于毛泽东的反对锚吴烦间的分析与思考··...····················································……肖君和(11)长矛盾论》与中国革命的逻辑·····················································。··················……户青山(17)…     

南通工学院学报(自然科学版)2004年(第3卷)总目次

一类仿射非线性不确定系统的鲁棒H.控制····································……朱其新,陆国平,吴建国(1.1)局部域上分式积分算子的加权有界性··································································……张晓丽(1 .5)矩阵初等变换在初等数论中的应用······································,······························……陈碧琴(1.9)…     

香蕉内生真菌、放线菌类群分析

采用内生菌分离法对华南种植的健康香蕉根、叶内生真菌、内生放线菌进行分离研究表明：叶内部的内生真菌主要为盘长孢刺盘孢菌物Colletotrichum gloeosporioides占60.77％；而根内部曲霉Aspergillus spp. ，青霉Penicillium spp.，拟青霉Pacecilomyces spp.的分离频率较高，共占70．4％。在根、叶内生放线菌中灰红紫类群链霉菌分离频率最高，分别占65.2％与78．2％；在整个植株中玫瑰浅灰链霉菌Streptomyces roseogriseolus的分离频率最高(占57．7％)，叶中该种链霉菌占69.0％，根中占43．5％。对峙实验表明：内生真菌在体外对香蕉枯萎病的病原菌(尖孢镰刀菌香蕉专化型)不显示明显的拮抗作用而内生放线菌则显示明显的拮抗活性，玫瑰浅灰链霉菌中有42．5％的菌株显示拮抗作用，该种链霉菌在提高香蕉植株对香蕉枯萎病的抗性中的作用值得重视。     

RAPD analysis of genetic variability among Stylosanthes guianenesis accessions of resistant and susceptible to the stylo anthracnose

Stylosanthes guianenesis Sw. is an important tropical forage legume grown and utilized in the tropics and the subtropics of South China. Anthracnose, caused by Colletotrichum gloeosporioides (Penz.) Sacc., is a major constraint to the extensive use of Stylosanthes. Forty-five accessions of S. guianensis were assessed with RAPD for genetic diversity and for resistance to anthracnose. RAPD analysis was performed using twenty primers screened from 200 arbitrary oligonucleotides, and a 71.5% level of polymorphism was found. The dendrogram obtained with unweighted pair group method of averages (UPGMA) based on the RAPD data showed genetic similarity from 50% to 94% among all stylo accessions, and fourteen clusters were defined at 66.5% genetic similarity. Two strains of C. gloeosporioides from stylo in China were used for anthracnose resistance screening. All plant accessions showed variation in the reaction to two strains and the correlation of resistance had a value of 0.904. Multiple correspondence analysis displayed a random distribution of the resistance or susceptibility response with respect to the genetic diversity measured by RAPD analysis except one group. Mean distance was also calculated to determine the diversity within clusters. From our results, the RAPD analysis is an effective and efficient technique of providing quantitative estimates of genetic similarity among stylo accessions.     

胶孢炭疽菌RGS蛋白生物信息学分析

胶孢炭疽菌侵染众多植物引起的炭疽病,给各国农林业生产造成了巨大经济损失.RGS作为植物病原菌G蛋白信号转导过程中的重要调节因子,在众多生理生化过程中发挥着重要作用.本研究基于前期研究所获得的胶孢炭疽菌中所含有的12个RGS,通过保守结构域、理化性质、疏水性、细胞信号肽、跨膜区结构、亚细胞定位以及二级结构等生物信息学分析,明确上述RGS在保守结构域、理化性质、疏水性、信号肽、跨膜区域、二级结构等方面均具有较大的一致性特点;此外,通过对上述RGS进行遗传关系比较分析,发现不同菌株中的RGS彼此之间具有较近的亲缘关系.该研究为深入开展胶孢炭疽菌RGS功能研究打下坚实的理论基础.     

不同胶孢炭疽菌菌株比较

从我国6个省的38种植物上收集并鉴定43个胶孢炭疽菌(Colletorichum gloeosporiaides)菌株，比较和分析了它们的培养特征和生长适应性等性状。43个菌株的培养性状和不同培养条件(温度和pH)的生长适应性均存在着较大的差异。对43个菌株的分生孢子的长宽及43个菌株在不同条件下生长量进行单因素方差分析表明，菌株间的差异达到了极显水平。聚类分析把43个菌株分为距离相差不大的多个类群；各菌株的分．化与菌株的寄主种类和地理来源没有明显的相关性。因此菌昧的形态学特征不适合对林木胶孢炭疽菌进行种以下的类群划分。     

植物提取物对草莓根腐病病原真菌的抑制作用

利用4种葱属植物(大蒜、韭菜、洋葱、葱、)的水提物和8种常见中草药(丁香、大黄、黄连、连翘、生地、桔梗、生姜、花椒)的水煎剂对引起草莓根腐病的2种主要病原真菌进行了体外抑制实验.结果表明:大蒜和韭菜的水提物以及丁香和大黄的水煎剂在较高浓度下对立枯丝核菌和胶胞炭疽菌均有较强的抑制作用,在较低浓度下则无明显影响或有轻微的促进病菌生长的作用;连翘的水煎剂在多种浓度下均只对胶胞炭疽菌有极强的抑制作用,对立枯丝核菌无明显影响.     

链霉菌(Streptomyces sp103)发酵产物对4种病原真菌的抑菌活性

采用生长速率法测定了链霉菌Streptomyces sp103的发酵液及其菌丝体的乙醇提取物对小麦赤霉病病菌、苹果轮纹病菌、苹果炭疽病菌、油菜菌核病病菌4种病原真菌的抑菌活性.结果表明:发酵液对4种病原真菌的相对抑制率分别为100%,86.7%,82.9%和100%,而其菌丝体的乙醇提取物对3种病原真菌的相对抑制率均为100%.     

3株拮抗内生放线菌的鉴定及其抑菌活性初步研究

对分离自江西东乡野生稻根部的3株内生放线菌进行鉴定和抑菌活性研究,根据菌株的形态与培养特征、生理生化特性及16S rRNA基因序列系统发育分析,将菌株FRo1、FRo2和FRo3分别鉴定为委内瑞拉链霉菌、娄彻氏链霉菌和肉质链霉菌.采用管碟法和菌丝生长速率法分析菌株拮抗病原细菌与病原真菌的活性.结果表明:菌株FRo1发酵液对所有测试细菌均有抑制作用,显示较广谱抑细菌活性; 菌株FRo2显示出较强抑制金黄色葡萄球菌和7种病原真菌的活性,其中对金黄色葡萄球菌抑菌直径为22.33 mm,对小麦赤霉、水稻纹枯病菌、车前草核盘菌及胶胞炭疽菌的抑制率分别为70;、45;、58;和65;; 而菌株FRo3发酵液对金黄色葡萄球菌、枯草芽孢杆菌及伤寒杆菌表现出不同程度的抑制,除车前草核盘菌外对所测试的病原真菌均有抑制活性,但抑制率均低于50;,这些菌株抑菌效果良好,显示出较好的生防潜力.     

杉木炭疽菌遗传转化及附着胞发育过程的细胞核行为观察

【目的】建立高效的杉木炭疽菌遗传转化体系,并观察附着胞发育过程中的细胞核行为。【方法】通过菌丝体酶解的方法制备原生质体,PEG介导的原生质体转化法将含有伯莱霉素抗性的细胞核表达质粒NL1::GFP转入受体材料杉木炭疽菌SMCG1#C菌株,通过荧光显微镜跟踪观察附着胞发育过程中的孢子、芽管和附着胞等结构中的细胞核行为。【结果】获得了稳定表达NL1::GFP质粒的杉木炭疽菌阳性转化子; 杉木炭疽菌附着胞发育过程伴随着细胞的有丝分裂与细胞核的转移; 附着孢发育成熟后,孢子和芽管菌丝中的细胞核仍然保持完整。【结论】建立了高效的杉木炭疽菌遗传转化体系; 杉木炭疽菌与稻瘟病菌、希金斯炭疽菌的附着胞发育过程的细胞生物学特性显著不同。     

杉木炭疽菌遗传转化及附着孢发育过程的细胞核行为观察

[目的]建立高效的杉木炭疽菌遗传转化体系,并观察附着胞发育过程中的细胞核行为.[方法]通过菌丝体酶解的方法制备原生质体,PEG介导的原生质体转化法将含有伯莱霉素抗性的细胞核表达质粒NL1::GFP转入受体材料杉木炭疽菌SMCG1#C菌株,通过荧光显微镜跟踪观察附着胞发育过程中的孢子、芽管和附着胞等结构中的细胞核行为.[结果]获得了稳定表达NL1::GFP质粒的杉木炭疽菌阳性转化子;杉木炭疽菌附着胞发育过程伴随着细胞的有丝分裂与细胞核的转移;附着孢发育成熟后,孢子和芽管菌丝中的细胞核仍然保持完整.[结论]建立了高效的杉木炭疽菌遗传转化体系;杉木炭疽菌与稻瘟病菌、希金斯炭疽菌的附着胞发育过程的细胞生物学特性显著不同.     

氢化诺卜醛环状缩醛类化合物的合成及其抑菌活性

以氢化诺卜醇为原料,经氯铬酸吡啶（PCC）氧化合成氢化诺卜醛,再由氢化诺卜醛与乙二醇、1,2-丙二醇和1,3-丙二醇分别发生缩合反应,合成了氢化诺卜醛乙二醇缩醛（2a）、氢化诺卜醛1,2-丙二醇缩醛（2b）、氢化诺卜醛1,3-丙二醇缩醛（2c）,其结构经 FT-IR、EI-MS、1 H NMR、13 C NMR 确认,3种化合物均为新化合物.以枇杷炭疽病菌（Cdletotrichum gloeosporioides）、油茶炭疽病菌（ Colletotrichum gloeospori-oides）、辣椒疫病菌（Phytophthora capsici）、水稻纹枯病菌（hizocitonia solani）、水稻稻瘟病菌（Magnaporthe grisea）、莴苣菌核病菌（Sclerotinia sclerotiorum）为实验对象,开展抑菌活性测定,结果表明:在100 mg·L -1浓度下,3种化合物对6种病原菌均具有一定的抑菌活性,化合物2c 对辣椒疫病菌抑菌率达到100;,化合物2b 对水稻纹枯病菌抑菌率达到98.78;,化合物2a 和2c 对油茶炭疽病菌、2b 对莴苣菌核、2c 对水稻纹枯病菌的抑菌率均在80;以上.