查询词典 phylogenetic

The molecular phylogenetic trees indicated that Oedipodinae is a monophyletic group and this subfamily is a natural one, but Catantopinae and Acridinae are non-monophyletic. Oedipodnae is a relatively primitive group within the Acrididae, whereas the Oxyinae may have diverged later than Oedipodinae, but earlier than most other species of Acridide.

分子系统树表明：斑翅蝗亚科是一单系群，该亚科是一个合法的亚科，但斑腿蝗亚科和蝗亚科都不是单系群；斑翅蝗亚科在蝗科内是一个相对原始的类群，而稻蝗亚科比斑翅蝗亚科相对进化，比蝗科的其他亚科的种类相对原始。

Results Same conservative sites and key catalytic sites existed among SjLDH and LDHs from other species. Similarity of SjLDH compared to CsLDH, TvLDH and HsLDH was 75%, 17%, 58%-60% respectively. Phylogenetic analysis demonstrated that the evolution relation between SjLDH and DmLDH was closer than the relation between SjLDH and CeLDH, the relationship between SjLDH and HsLDH-B,-C was closer than HsLDH-A. Three trans-membrane regions were found, the region of 98aa-106aa in three hydrophilia regions located outside of membrane was inferred as the major antigen epitope. This antigen epitope had significant difference with LDHs from protozoon （ Pf ., Tg ., Tv .） and had 1-3 amino acid residue difference with MmLDH, HsLDH-A,-B,-C, and was the same with CsLDH. One of the key catalytic residues and substrate binding loop were located in this region. Tertiary structure demonstrated that 98aa-106aa was on the surface of the protein and formed a substrate binding loop, other two key catalytic sites were at the position near the loop.

结果 SjLDH与其他物种的同源序列含相同的保守位点及催化活性位点，与华支睾吸虫LDH同源性最高为75％，与阴道毛滴虫LDH同源性最低为17%，与人LDH（HsLDH-A，-B，-C）的同源性为58%~60％； SjLDH与果蝇的进化距离较秀丽隐杆线虫为近，3种人LDH中与HsLDH-B、-C的进化距离较HsLDH-A为近；该蛋白具有3个跨膜区域，3个高亲水性区域，主要的线性表位98aa~106aa位于膜外，与原虫LDH相同区域差异显著，而与其他LDH有1~3个氨基酸的差异，关键催化位点之一及底物丙酮酸结合区域位于该区域，蛋白质同源模建分析表明该区域位于蛋白表面形成环状结构，3个关键催化位点位于该区域或在其附近。

Although Pulsatilla can easily be distinguished from Anemone by the former having a long, plumose beak on the achenes formed by the persistent style, phylogenetic studies have shown that they are probably congeneric.

尽管Pulsatilla 能容易地通过其在瘦果上有宿存花柱形成的长的、羽状喙，与银莲花属区分，系统发育的研究显示它们可能是同属。

Molecular phylogenetic tree constructed by NJ method suggests that African wild dog is the earliest divergent. Wolf, dog, and simien fox which belong to genus Canis are combined into one branch which diverged earlier than raccoon dog, red fox and blue fox. Red fox is more related to blue fox than the other animals.

NJ法构建的分子系统树显示，非洲野犬最先从犬科动物中分化出来；犬属的狼、狗和西门豺等3种为系统树上独立的一支，且其分歧的时间较赤狐、蓝狐和貉早；赤狐和蓝狐具有较近的亲缘关系。

Sequence comparison and phylogenetic analysis of mtDNA 16S rRNA and COI gene fragments in four species of razor shell were made using PCR and direct sequencing. The four species are Solen grandis Dunker, Solen strictus Gould and Cultellus attenuatus Dunker, Sinonovacula constricta.

本实验对帘蛤目四种蛏类大竹蛏，长竹蛏和小刀蛏和缢蛏的线粒体16S rRNA和COI基因片段部分序列进行了比较并对其系统学进行了初步研究。

Five kinds of bacteria were isolated from disease Meretrix meretrix and culture water (two isolated from the M. meretrix, three from the culture water) in Lvsi harbor, Jiangsu province. The results of infection showed that strain WG1702 can cause disease with the mortality rate 100 percent and the same symptoms as original. It was cued that strain WG1702 was the pathogenic bacteria and caused the death in large scare, a preliminary research was done on the bacteria including morphological, physiological, biochemical characteristics, phylogenetic position and pathogenic. Strain WG1702 was a straight-rod gram negative bacterium, the physiological and biochemical indicators were lysine decarboxylase, ornithine decarboxylase, reduction of NO3- to NO2-, mannitose, oxidase and methylred reaction positive, arginine decarboxylase, arginine dihydrolase, salicin and voges-proskauer negative.

本文从江苏吕泗文蛤养殖区发病文蛤和养殖水体中分离到5株优势菌(病蛤中分离到3株优势菌，养殖水体中分离到2株优势菌)，人工感染实验结果显示，菌株WG1702能引起供试文蛤发病，死亡率为100%，且发病症状与原发病症状相同，提示该菌是引起文蛤大面积死亡的主要致病菌，对其形态、生理生化特征、分类地位及致病性进行了初步研究，菌株WG1702为革兰氏阴性菌，直杆状，生理生化指标为：赖氨酸脱羧酶、鸟氨酸脱羧酶、硝酸盐还原、甘露糖、氧化酶、甲基红阳性，精氨酸脱羧酶、精氨酸双水解酶、水杨素、V.P阴性。

In the second section, we describe two novel species that were isolated from the Chigu and Szutsao saltern. On the basis of phenotypic, phylogenetic and genetic analyses, these two strains were considered to represent a novel species of the genus Virgibacillus and Marinobacter, and were named Virgibacillus chiguensis and Marinobacter szutsaonensis according to Chigu and Szutsao saltern.

本研究亦从盐田分离出两株极端耐盐菌，经由型态、生理、生化及分子演化等多重分析比对，确认这两株菌株为新菌种，分别依其分离之盐田命名为七股菌与四草菌，并寄存於菌种保存研究中心。

The transitions at the third codon positions of the COI data set were found saturated, but they were retained for analysis, because they contain the majority of the phylogenetic information.

虽然 COI 基因数据中第3位点的转换替换已达饱和，但由于这些位点含有大量系统发育信息，因而在数据统计分析时并没有将这些位点删除。

We have identified 1452 GPCRs in the X.tropicalis genome.(2) Phylogenetic analyses classified these receptors into seven families, consisting of Glutamate,Rhodopsin,Adhesion,Frizzled,Secretin,Taste 2 and Vomeronasal 1.(3) X.tropicalis shares a more similar repertoire of GPCRs with mammals than it does with fish.

2严格的系统发生学分析将热带爪蟾G蛋白偶联受体分成了谷氨酸盐受体类，视紫红质类，粘着蛋白类，卷曲蛋白类，味觉2受体类，分泌素受体类和犁鼻骨1受体类这七个受体家族。

The molecular trees show the species is a basal group in Smilax phylogenetic tree, and is of a parallel origin with other groups: some species with single umbel and most species with raceme of umbels.

在分子树上，它是处于菝葜属内基部的一个类群，与其它类群(包括部分单伞花序的种及大部分圆锥花序的种)是平行起源的。

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。