中国斑粉蝶属分类研究（鳞翅目：粉蝶科）

系统地整理了中国斑粉蝶属DeliasHübner,1819的全部种类,共11种31亚种,包括3个中国 新记录亚种：倍林斑粉蝶指名亚种D. berinda berinda Moore、洒青斑粉蝶不丹亚种D.Sanaca bhutya Talbot和侧条斑粉蝶帕瓦亚种D. lativitta parva Talbot。提出将D.Lativitta tai Yoshino作为侧条斑粉蝶云南亚种D. lativitta yunnana Talbot的同物 异名,D. patrua guiyangensis Zhou et Zhang作为Delias berinda adelma Mitis的同物异名。阐述了各亚种的主要识别特征及其地理分布,分析了区系成分,并提供了分 种检索表及全部种类的雄外生殖器和大部分种类的雌性外生殖器特征图。附有3新记录亚种和国 内未见标本记载的2种的成虫彩色照片     

中国灰姑娘绢粉蝶一新亚种(鳞翅目,粉蝶科)

记述中国灰姑娘绢粉蝶Aporia potanini Alphéraky 1新亚种,灰姑娘绢粉蝶白色亚种Aporia potanini huanghaoi ssp.nov..模式标本分别保存于北京自然博物馆昆虫标本室、中国科学院动物研究所昆虫标本馆和中国农业大学昆虫标本室.     

中国迁粉蝶属(鳞翅目,粉蝶科)基于NDⅠ和COⅠ基因部分序列的系统发育关系

测定了中国迁粉蝶属3种4亚种以及迁粉蝶指名亚种5个生态型的线粒体COⅠ基因和NDⅠ基因部分序列,以灵奇尖粉蝶为外群,分别采用最大简约法、最大似然法和贝叶斯法构建分子系统树,探讨了中国迁粉蝶属3种4亚种间的系统发育关系,并首次明确了迁粉蝶指名亚种5个生态型的亲缘关系。结果显示在测得的COⅠ基因661bp序列和NDⅠ基因472bp序列中,有变异位点227个,简约位点119个,A+T含量(75.5%)明显偏高。迁粉蝶属4亚种分子系统关系为:(镉黄迁粉蝶指名亚种+((梨花迁粉蝶指名亚种+梨花迁粉蝶海南亚种)+迁粉蝶指名亚种)),迁粉蝶指名亚种5个生态型分子系统关系为:(无纹型+((有纹型+红角型)+(银斑型+血斑型)))。     

中国园粉蝶属Cepora Billberg分类研究(鳞翅目:粉蝶科)

首次基于雌、雄性外生殖器对中国园粉蝶属Cepora Billberg进行系统分类研究,提供了外生殖器结构图、成虫照片和前、后翅脉序图,编制了分种及分亚种检索表:同时通过解剖吴氏园粉蝶C wui Chou & zhang正模的外生殖器,结合形态特征提出其为栗斑粉蝶Delias levicki的新异名,明确了其分类地位,且...     

中国迁粉蝶属分类研究（鳞翅目：粉蝶科）

首次基于外生殖器构造特征对中国迁粉蝶属Catopsilia,Hüubner进行了系统研究,包括3种4个亚种,绘制了外生殖器特征图,编制了分种检索表;同时对其地理分布进行了初步分析,优势分布地卡要集巾在西南区、华中区和华南区;所有研究标本均保存丁两北农林科技人学昆虫博物馆.     

基于COI和EF-1α基因的绢粉蝶属和妹粉蝶属系统发育关系分析

【目的】由于绢粉蝶属Aporia和妹粉蝶属Mesapia的分类地位尚存在争议,本研究基于COI和EF-1α基因探讨它们的系统发育关系。【方法】对采自中国的19个种(含绢粉蝶属13个种,妹粉蝶属1种以及用作外群的另外3个属的5个种)的COI和EF-1α基因部分序列进行了测定和分析;依据这2个基因的联合序列采用最大似然法(maximum likelihood,ML)和贝叶斯法(Bayesian inference,BI)构建了这些种的系统发育树。【结果】序列分析结果显示,测得的COI序列长度为657 bp,EF-1α序列长度为642 bp,联合后获得的序列总长为1 299 bp,其中变异位点439个,简约信息位点249个;序列A+T的含量明显高于C+G的含量。系统发生分析结果显示,除外群外,其余种类形成单系群(BV=100,PP=1.00),且分成两大支,一支为(奥倍绢粉蝶A.oberthuri+锯纹绢粉A.goutellei)+(丫纹绢粉蝶A.delavayi+(完善绢粉蝶A.agathon+(马丁绢粉蝶A.martineti+(大翅绢粉蝶A.largeteaui+巨翅绢粉蝶A.gigantea)))),另一支为普通绢粉蝶A.genestieri+(中亚绢粉蝶A.leucodice+((绢粉蝶A.crataegi+灰翅绢粉蝶A.potanini)+(妹粉蝶M.peloria+(暗色绢粉蝶A.bieti+小檗绢粉蝶A.hippia))))。【结论】本研究结果支持妹粉蝶属应为绢粉蝶属的异名,且绢粉蝶属内不再划分亚属和种组。     

基于线粒体CO Ⅰ和Cyt b基因的粉蝶亚科及黄粉蝶亚科(粉蝶科)部分类群的分子系统发生

测定了粉蝶科的粉蝶亚科和黄粉蝶亚科14属共24种线粒体COⅠ和Cyt b基因部分序列,并从GenBank中下载了2种粉蝶的同源序列,以眼蝶科的2个物种为外类群,运用NJ法、贝叶斯法分别重建了分子系统树,探讨了它们的系统发生关系。基因序列分析结果表明,经比对和处理后的序列总长度为1111bp,其中变异位点478个,简约位点382个,碱基T、C、A、G平均含量为39.9%、16.9%、30.9%、12.3%,A＋T含量和C＋G含量分别为70.8%和29.2%。分子系统树显示：黄粉蝶亚科不是单系群,但其中迁粉蝶属和豆粉蝶属在不同的分析方法中均聚合在一起。粉蝶亚科形成一个独立的支系,其中,襟粉蝶族为并系群;粉蝶族的粉蝶属、飞龙粉蝶属和云粉蝶属具有较近的亲缘关系。     

中国菜粉蝶群(Pieris napi-broniae)的分类(鳞翅目:粉蝶科)

本文根据雄性粉蝶香鳞的形态特征,对粉蝶类群的种和亚种进行了修订,并用图标明其分布地区,也提出待研究的生物学及生态学的问题。     

迁粉蝶雌性生殖系统结构研究

解剖和描述了迁粉蝶Catopsilia pomona(Fabricius)的雌性生殖系统结构。结果表明:迁粉蝶外生殖器包括交配囊及其附属结构、导精管、后表皮突和肛突;内生殖器包括1对卵巢、2根侧输卵管、1根中输卵管、受精囊、附腺、外生殖腔及产卵孔。卵巢左右对称,每个卵巢由4根多滋式卵巢管组成。同时提出卵巢发育分级指标,为害虫预测和防治提供指导性意见。     

报喜斑粉蝶的生物学初步观察

报喜斑粉蝶是国产粉蝶中最美丽的蝶种之一,具有很高的科研和经济价值.2008年5月～2009年7月在广西南宁良凤江国家森林公园内,报喜斑粉蝶在自然条件下每年发生6代,卵期约7～8天,幼虫期约18～20天,蛹期约6～8天.     

A Unique Protease Cleavage Site Predicted in the Spike Protein of the Novel Pneumonia Coronavirus (2019-nCoV) Potentially Related to Viral Transmissibility

正Dear Editor,In December 2019, a novel human coronavirus caused an epidemic of severe pneumonia(Coronavirus Disease 2019,COVID-19) in Wuhan, Hubei, China(Wu et al. 2020; Zhu et al. 2020). So far, this virus has spread to all areas of China and even to other countries. The epidemic has caused 67,102 confirmed infections with 1526 fatal cases     

Curcuminoids as inhibitors of thioredoxin reductase: A receptor based pharmacophore study with distance mapping of the active site

Curcumin is the yellow pigment of turmeric that interacts irreversibly forming an adduct with thioredoxin reductase (TrxR), an enzyme responsible for redox control of cell and defence against oxidative stress. Docking at both the active sites of TrxR was performed to compare the potency of three naturally occurring curcuminoids, namely curcumin, demethoxy curcumin and bis-demethoxy curcumin. Results show that active sites of TrxR occur at the junction of E and F chains. Volume and area of both cavities is predicted. It has been concluded by distance mapping of the most active conformations that Se atom of catalytic residue SeCYS498, is at a distance of 3.56 from C13 of demethoxy curcumin at the E chain active site, whereas C13 carbon atom forms adduct with Se atom of SeCys 498. We report that at least one methoxy group in curcuminoids is necessary for interation with catalytic residues of thioredoxin. Pharmacophore of both active sites of the TrxR receptor for curcumin and demethoxy curcumin molecules has been drawn and proposed for design and synthesis of most probable potent antiproliferative synthetic drugs.     

The structure, reproduction and taxonomy of Vidalia and Osmundaria (Rhodophyta, Rhodomelaceae)

Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera.     

New or rare chromosome counts in Artemisia L. (Asteraceae, Anthemideae) and related genera from Kazakhstan

Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted.     

Comparative morphology of the carpel in the Liliaceae: Hewardieae, Petrosavieae, and Tricyrteae

The young pistils in the melanthioid tribes, Hewardieae, Petrosavieae and Tricyrteae, are uniformly tricarpellate and syncarpous. They lack raphide idioblasts. All are multiovulate, with bitegmic ovules. The Petrosavieae are marked by the presence of septal glands and incomplete syncarpy. Tepals and stamens adhere to the ovary in the Hewardieae and the Petrosavieae but not in the Tricyrteae. Two vascular bundles occur in the stamens of the Hewartlieae and Tricyrtis latifolia. Ventral bundles in the upper part of the ovary of the Hewardieae are continuous with compound septal bundles and placental bundles in the lower part. Putative ventral bundles occur in the alternate position in the Tricyrteae and putative placental bundles in the opposite. position in the Petrosavieae. The dichtomously branched stigma in each carpel of the Tricyrteae is supplied by a bifurcated dorsal bundle.     

肝癌中HBV和HCV基因和抗原的分布及意义

采用原位分子杂交方法检测HCV RNA及HBV X基因;采用免疫组织化学方法研究HCV核心抗原,非结构区C33c抗原及HBxAg在肝细胞肝癌中的定位及分布.结果表明(1)HCV RNA、HBV X基因在肝细胞肝癌组织检出率分别为40%(55/136)和82%(112/136).HCV RNA定位于癌细胞的胞浆内,阳性细胞呈散在、灶状及弥漫分布三种形式;HBV X基因在肝癌细胞中的分布呈胞浆型、核型及核浆型,阳性细胞也呈上述三种分布形式;(2)HCV C33c抗原、核心抗原在肝细胞肝癌中的阳性率为81%(133/164)及86%(141/164).C33c抗原定位于癌细胞及肝细胞的胞浆内;核心抗原既定位于癌细胞核中,又可定位于胞浆中.C33c抗原阳性细胞以灶状分布为主;而核心抗原阳性细