青海省阳蝇属四新种(双翅目,蝇科)

报告采自青海省蝇科阳蝇属Helina R—D．4新种,分别命名为高居阳蝇Helina alpigenus sp．nov．,尖尾阳蝇Helina apicicauda sp．nov．,二刺阳蝇Helina bispina sp．nov．和大毁阳蝇Helina largideleta sp．nov．。模式标本保存于中国科学院动物研究所。     

新疆阳蝇属四新种(双翅目:蝇科)

报告采自新疆蝇科阳蝇属Helina R.-D.4新种,即眼鬃阳蝇Helina ocellijuba sp.nov.,粘叶阳蝇Helina mallocerca sp.nov.,狭跗阳蝇Helina stenotarsis sp.nov.和板刺阳蝇Helina sterniteoacaena sp.nov.。模式标本保存于中国科学院动物研究所。     

中国四川省阳蝇属五新种(双翅目:蝇科)

报道采自中国四川省阳蝇属Helina R．-D．,1830 5新种：腹刺阳蝇Helina sternitoscola,sp.nov．;华西阳蝇Helina sinoccidentala,sp．nov．;亚蜜阳蝇Helina subfica,sp．nov．;双叉阳蝇Helina didicrocerca,sp．nov．：四川阳蝇Helina sichuanica,sp．nov．。前4种模式标本保存在中国科学院上海生命科学研究院植物生理生态研究所：最后1种保存于北京军事医学科学院微生物流行病研究所医学昆虫标本馆。     

四川省阳蝇属五新种（双翅目：蝇科）

记述采自中国四川西部山区阳蝇属Helina R.-D.,1980的5新种,分别命名为金阳蝇Helina aureolicolorata,sp.nov.;羽胫阳蝇Helina plumipostitibia,sp.nov.;茂汶阳蝇Helina maowenna,sp.nov.;雨阳蝇Helina hyeta,sp.nov.;类介阳蝇Helina mimintermedia,sp.nov.。模式标本存北京军事医学科学院微生物流行病研究所医学昆虫标本馆。     

中国四川阳蝇属二新种(双翅目:蝇科)

报道采自中国四川省阳蝇属Helina R．-D．,1830二新种：炽阳蝇Helina alea,sp．nov．;梨阳蝇Helina pyriforma,sp．nov．。模式标本存北京军事医学科学院微生物流行病研究所医学昆虫标本馆。     

中国阳蝇属国上新种（双翅目：蝇科）

报道采自黑龙江和甘两省的蝇科阳蝇属Helina R.-D.4新各上,分别命名为胡氏阳蝇Helina huae sp.nov.,小兴安阳蝇Heliona xiaoxinganna sp.nov.,舟曲阳蝇Helina zhouquensis sp.nov和圆板阳蝇Helina ampyxocerca sp.nov.。模式标本保存于沈阳师范大学昆虫研究所。     

中国四川阳蝇属五新种(双翅目:蝇科)

报告采自四川西部山区的蝇科阳蝇属HelinaR.-D.五新种,即：亚喜密阳蝇Helina subevecta sp.nov,阳阳蝇Helina solata sp.nov,用公山阳蝇Helina zhougongshanna sp.nov,康定阳蝇Helina kangdingen-sis sp.nov和赘脉阳蝇Helina appendicivena sp.nov。模式标本保存于中国军事医学科学院微生物流行病研究所医学昆虫标本馆。     

新疆阳蝇属Helina R.—D.二新种（双翅目：蝇科）

记述采自新疆蝇属Helina R.-D．2新种,托木尔阳蝇Helina tuomuerra,sp,nov。和新疆阳蝇Helina xinjiangensis,sp.nov.模式标本保存于中国科学院动物研究所。     

长白山阳蝇属三新种(双翅目:蝇科)

报道采自吉林省长白山蝇科阳蝇属Helina R.-D.3新种,即密胡阳蝇Helina densibarbata sp.nov。,吉林阳蝇Helina jilinensis sp.nov.和小毁阳蝇Helina minutideleta sp.nov.,模式标本保存于沈阳师范大学昆虫研究所。     

中国阳蝇属四新种(双翅目: 蝇科)

报道采自黑龙江和甘肃两省的蝇科阳蝇属Helina R. -D. 残轮?分别命名为胡氏阳蝇Helina huae sp. nov., 小兴安阳蝇Heliona xiaoxinganna sp. nov., 舟曲阳蝇Helina zhouquensis sp. nov. 和圆板阳蝇Helina ampyxocerca sp. nov..模式标本保存于沈阳师范大学昆虫研究所.     

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.