Nucleic acid binding activity of pns6 encoded by genome segment 6 of rice ragged stunt oryzavirus

Rice ragged stunt disease, caused by rice ragged stuntoryzavirus (RRSV), was first discovered in 1976–1977 inIndonesia and Philippines [1]. Subsequently the diseasewas found in most rice-growing countries in south-easternand far-eastern Asia [2] and may inflict heavy loss on thecrop. RRSV is the type species of the genus Oryzavirus in thefamily Reoviridae. The virus particle is icosahedral witha diameter of about 65–70 nm and the genome consistsof 10 double stranded RNA (dsRNA) segm…     

HIV/AIDS in Asia： The Shape of Epidemics and Their Molecular Epidemiology

The Asia-Pacific region is a home to 60% of the population in the world and to approximately one quarter of people with HIV/AIDS. Close to a million of people has been infected and a half million people died of AIDS annually in Asia,becoming the second largest epicenter of global AIDS epidemic. Molecular epidemiology has been useful tool to track a course of HIV spread. In-depth knowledge from the studies on molecular epidemiology elucidates the dynamics of HIV spread and the interrelationship of epidemics in the different regions in Asia.     

陆地棉新型核雄性不育系21A的初步研究

利用辐射诱变和回交育种成功培育出21A雄性不育系,经遗传分析和等位性测验发现,该不育性受1对隐性基因控制,它与国内发现的msc1、msc2、msc3、msc74个陆地棉隐性不育基因彼此是非等位基因;采用NCⅡ遗传交配设计,用21A不育系作母本,5个常规棉品种作父本,配制杂交组合,对10个组合的F1产量和品质性状的竞争优势和配合力进行分析,结果表明,该不育系杂种优势明显,一般配合力高,易于筛选优良的杂交组合,在生产优质杂交种方面具有很大的利用价值。     

PNAS发表我科学家最新研究成果

由中国科学院昆明植物研究所植物化学与西部植物资源持续利用国家重点实验室、微生物研究所植物基因组学国家重点实验、中国疾病预防控制中心病毒病预防控研究所和云南省农业科学院生物技术研究所联合研究,首次发现双裂孕烷甾体glaucogenin C及其苷类化合物有选择性地抑制-正链RNA病毒,     

哺乳动物毛色形成机制与影响因素

哺乳动物拥有丰富多彩的毛色,对于多种多样的动物毛色,影响其形成的可能原因较多,遗传物质与环境的相互作用不可忽视。本文针对调控黑色素细胞形成及褐黑色素、真黑色素合成的相关基因,分析了哺乳动物毛色形成的可能机制,并对研究不同毛色动物的同种动物遗传差异的方法进行了讨论。