中国叶蜂属两新种(膜翅目,叶蜂科)

记述中国叶蜂科Tenthredinidae叶蜂属Tenthredo2新种,三斑槌腹叶蜂Tenthredo trixanthomacula Wei et Yan,sp.nov.和褐跗短角叶蜂Tenthredo rubitarsalitia W ei et Xu,sp.nov.。前者隶属于槌腹种团T.formosana group,后者隶属于短角种团T.potanini group。新种模式标本保存于中南林业科技大学昆虫系统与进化生物学实验室昆虫模式标本室(CSCS)。     

中国叶蜂属(膜翅目,叶蜂科)三新种

记述采自中国河南、陕西、浙江的叶蜂科叶蜂亚科叶蜂属3新种:吕氏横斑叶蜂Tenthredo lunani Wei et Niu,sp.nov.,三斑槌腹叶蜂Tenthredo dolichomisca Wei et Niu,sp.nov.,黑腰白端叶蜂Tenthredo pararubiapicilina Wei et Niu,sp.nov.。新种模式标本保存于湖南长沙中南林业科技大学昆虫模式标本室。     

中国叶蜂属(膜翅目,叶蜂科)两新种

记述中国叶蜂科叶蜂属2新种:平突翠绿叶蜂Tenthredo flatotrunca Wei et Hu,sp.nov.和角斑长突叶蜂Tenthredo triangulimacula Wei et Hu,sp.nov..前者属于叶蜂属翠绿叶蜂种团Tenthredo trunca group,后者属于叶蜂属长突叶蜂种团Tenthredo triangulifera group.简要讨论了翠绿叶蜂种团和长突叶蜂种团的特征与种类分布状况.提供了长突叶蜂种团分种检索表.新种模式标本保存于湖南长沙中南林业科技大学昆虫模式标本室.     

中国叶蜂属(膜翅目,叶蜂科)二新种

记述中国叶蜂科叶蜂属Tenthredo subflava种团2新种:宽齿平绿叶蜂T.latidentella Wei et Zhao,sp.nov.和双斑平绿叶蜂T.flatoscutellania Wei et Niu,sp.nov..编制了T.     

TWO NEW SPECIES OF TENTHREDO (HYMENOPTERA,TENTHREDINIDAE) FROM CHINA

记述中国叶蜂科Tenthredinidae叶蜂属Tenthredo2新种,三斑槌腹叶蜂Tenthredo trixanthomacula Wei et Yan,sp.nov.和褐跗短角叶蜂Tenthredo rubitarsalitia Wei et Xu,sp.nov..前者隶属于槌腹种团Tformosana group,后者隶属于短角种团T.potanini group.新种模式标本保存于中南林业科技大学昆虫系统与进化生物学实验室昆虫模式标本室(CSCS).     

中国叶蜂属(膜翅目,叶蜂科)OBSOLETA-MESOMELA种团二新种

记述采自中国境内叶蜂属obsoleta-mesomela种团2新种:粗纹窄突叶蜂Tenthredo paraobsoleta Wei et Liu,sp.nov.和粗纹低突叶蜂Tenthredo pseudomesomela Wei et Li,sp.nov..前者属于obsoleta亚种团,后者属于mesomela亚种团.新种模式标本保存于湖南长沙中南林业科技大学昆虫模式标本室.     

中国叶蜂属双带种团(膜翅目,叶蜂科)二新种和二新纪录种及一新异名

简要讨论了叶蜂科叶蜂属双带种团的分类状况、主要识别特征及其与近缘种团的区别.记述双带种团2新种:绿柄双带叶蜂Tenthredo pseudoformorsula Wei et Shang,sp.nov.和短顶双带叶蜂Tenthredo transversiverticina Wei et Shang,sp.nov..蓝光双带叶蜂 Tenthredo melanosternum Saini&Vasu,1999和角斑双带叶蜂Tenthredo segrega Konow,1908是中国新纪录种.建立1个新异名关系:Tenthredo eburata Konow,1900=Tenthredo rubrocaudata Takeuchi,1936,syn.nov..     

中国叶蜂属(膜翅目,叶蜂科)斑翅种团一新种

在叶蜂属内建立斑翅种团,简要讨论了该种团识别要点以及已知种类分布,编制了斑翅种团已知种分种检索表,记述中国叶蜂属斑翅种团1新种,横带斑翅叶蜂Tenthredo transversa Wei et Shang,sp.nov..     

中国三节叶蜂属三新种(膜翅目,三节叶蜂科)

记述中国三节叶蜂属3新种:显著斑钳三节叶蜂Arge distincta Wei et Zhang,sp.nov.,红胫斑钳三节叶蜂Arge rufotibiella Wei et Zhang,sp.nov.和细角斑钳三节叶蜂drge tenuicornis Wei et Zhang,sp.nov..3新种与Argemarginellia Wei,2002以及Arge basifusca Malaise,1947构成三节叶蜂属1新种团marginellia种团.编制了marginellia种团已知种类检索表.新种模式标本保存于中南林业科技大学昆虫模式标本室.     

海南叶蜂补充记录附记中国蔡氏叶蜂属一新种(膜翅目:叶蜂总科)

记述采自中国海南省的叶蜂7属8种,其中分附顺角叶蜂Tenthredo malimilova Wei,2004和台湾钩瓣叶蜂Macrophya formosana Rohwer,1916是海南省新记录,华氏狭背叶蜂Ametastegia huai Wei et Nie,2002的雌虫为首次描述。记述叶蜂科平背叶蜂亚科1新种——黑跗蔡氏叶蜂Caiina nigritarsis Wei,sp．nov．。     

Recent advances in the study of Kaposi's sarcoma-associated herpesvirus replication and pathogenesis

It has now been over twenty years since a novel herpesviral genome was identified in Kaposi's sarcoma biopsies. Since then, the cumulative research effort by molecular biologists, virologists, clinicians, and epidemiologists alike has led to the extensive characterization of this tumor virus, Kaposi's sarcoma-associated herpesvirus(KSHV; also known as human herpesvirus 8(HHV-8)), and its associated diseases. Here we review the current knowledge of KSHV biology and pathogenesis, with a particular emphasis on new and exciting advances in the field of epigenetics. We also discuss the development and practicality of various cell culture and animal model systems to study KSHV replication and pathogenesis.     

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.