查询词典 phylogenetic

Nosema antheraeae ; Ribosomal RNA gene ; ITS ; Organization ; Phylogenetic analysis

柞蚕微孢子；核糖体基因；转录间隔区；排列顺序；系统分析

In recent years, as methods of the molecular phylogeny widely used in the studies of systematics and phylogeny of Nymphalidae, the basic phylogenetic patterns of them have been clarified. However, up to the present, these studies, especially about the taxa distributed in China is rather scarce.

近年来，由于分子生物学在蛱蝶科系统分类中的广泛应用，蛱蝶科各主要类群间系统发生关系的格局逐步清晰，但国内蛱蝶科的分子系统学研究还十分匮乏。

In addition to the roles in ontogenic physiology, researches on the area of miRNA phylogenetic conservation and diversity suggested that miRNAs play important roles in animal evolution through driving phenotypic variations in development.

然而，除了在个体发生过程中的重要功能外，越来越多的研究表明，miRNA在系统发生中也扮演着关键的角色。

Combined with phylogenetic reconstruction of the plant groups, and studies on ornithophily in these taxa, it is possible to elucidate the emergence and evolution of the bird-flower coevolution in the Old World.

结合植物类群的系统发育研究以及对其鸟类传粉现象的认识，可以系统地了解鸟类传粉在旧世界温带地区的起源与演化，以及鸟一花协同进化的过程。

Combined with phylogenetic reconstruction of the plant groups, and studies on ornithophily in these taxa, it is possible to elucidate the emergence and evolution of the bird-flower coevolution in the Old World.

结合植物类群的系统发育研究以及对其鸟类传粉现象的认识，可以系统地了解鸟类传粉在旧世界温带地区的起源与演化，以及鸟-花协同进化的过程。

Results indicate that the number of bacteria grown in media LB, CSEA and WSA was 14.84×10^7, 10.27×10^7 and 6.91×10^7 CFU per gram dry soil, respectively, after 192 h of incubation. The diversity index of soil bacteria was the highest in WSA, while the lowest in LB. Certain similarity was discovered in bacteria community between the three media, i. e. the Jaccard index was 57.69% between LB and CSEA, 53.13% between LB and WSA and 66.67% between CSEA and WSA. Phylogenetic analysis suggests that the dominant bacterial groups in the soil belong to β-Proteobacteria,γ-Proteobacteria and Actinobacteria. The sequence of 16S rDNA of some OTUs was found to have high homology with Burkholderiaceae bacterium, Rhodococcus and Mycobacterium, so it is presumed that the cells of these bacteria can secrete Resuscitation-Promoting Factors, which may effectively improve culturability of soil microorganisms.

结果表明，LB、CSEA、WSA培养基192h后每g干土获得的细菌数量分别为14.84×10^7、10.27×10^7和6.91×10^7CFU，但微生物多样性指数以WSA为最高，LB多样性指数最低；三种培养基培养的细菌菌群有一定的相似性，LB和CSEA培养基间的Jaccard指数为57.69%，LB和WSA培养基之间为53.13%，而CSEA和WSA培养基的相似性指数达66.67%；16SrDNA测序结果表明，所获得的土壤细菌优势种群在分类方面主要属于γ-和β-变形杆菌以及放线菌亚门，其中某些OTUs中的16SrDNA序列与Burkholderiaceae bacterium、Rhodococcus和Mycobacterium属具有较高的同源性，推测其细胞能够分泌复苏促进因子，有效地提高土壤细菌的可培养性。

This paper deals with the classification,distribution and the phylogenetic relationships among the species of the genus Phrynocephalus in Tibet Plateau with the paleogeographic changes in cenozoic.

长期以来，对西藏地区沙蜥(Phrynocephalus：Agamidae)的研究主要是种的分类和地理分布及生态习性方面，如Blyth(1863)、Boulenger(1885)、Zugmayer(1909)、Bedriaga(1907-1909)、赵肯堂(1979，1992)、黄永昭(1979)、原洪(1986)、胡淑琴等(1987)、赵尔宓等(1993)、王跃招等(1993)等。

We compared three competing hypotheses which maintained that euprimates originated in Africa, the India subcontinent, or East Asia. Combined the recent achievements on the mammalian fauna exchanges during early Eocene between Europe and Africa, Europe and Asia, and Asia and India subcontinent, the paleogeographic models of around Turgai Strait, the new dating results of the collision between Indian subcontinent and Asia, and the phylogenetic analysis of euprimate, we suggested that the Asian-origin hypothesis of euprimates are more reliable.

全面对比了真灵长类动物亚洲起源说、非洲起源说和印度次大陆起源说，结合前人有关欧洲与非洲之间、欧洲与亚洲之间、亚洲与印度次大陆之间早始新世时的动物群交流的研究，以及有关图尔盖海峡古地理、印度板块与欧亚板块碰撞时间的研究成果，在真灵长类动物分支系统分析的基础上，提出真灵长类动物亚洲起源说是目前获得支持证据最多的假说。

This study provided some new evidences for the phylogenetic relationships of Rhopalocera butterflies and its subgroup Papilioninae through the primary and secondary structure analyses of 16S rRNA gene sequence, aiming at setting up a more scientific and reasonable systematics category for the butterflies, especially for those distributed in our country.

本研究通过对凤蝶亚科以及蝶类各主要类群的16S rRNA基因序列的一级和二级结构的系统学分析，旨在为蝶类的系统分类和系统演化研究提供一些分子佐证，为进一步建立一个更为科学的自然分类系统提供部分相关基础资料。

In this study, reliable phylogenetic relationships of eight species in Pectinidae were inferred from the structure alignment, but not from sequence alignment, even with the aid of structural information.

本研究的结果显示，可靠的系统发生关系可以从完整的二级结构比对中推断得出，但不能从序列比对中推断得出。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。