四川省西部鱼类寄生粘孢子虫——1.粘体虫属六新种(粘孢子纲:双壳目)

本文报导四川省西部鱼类寄生粘孢子虫粘体虫属六新种,即异型粘体虫,新种Myxosoma disparis sp.nov.,四川粘体虫,新种Myxosoma sichuanensis sp.nov.,光唇粘体虫,新种Myxosoma acrossochilusi sp.nov.鳅粘体虫,新种Myxosoma nemachilusi sp.nov.斜囊粘体虫,新种Myxosoma obliqua sp.nov.,雅安粘体虫,新种Myxosoma yaanensis sp.nov.。     

中国南部的白蚁新种

本文记述了在中国南部发现的下列二十一个新种。其中有*号者是作者参加中苏合作云南生物考察队时所采集到的部分材料。 木白蚁科Kalotermitidae 1. 铲头堆砂白蚁Cryptotermes declivis新种 2. 黑额叶白蚁Lobitermes nigrifrons 新种 3. 金平树白蚁Glyptotermes chinpingensis新种 鼻白蚁科Rhinotermitidae 4. 宽唇异白蚁 Heterotermes latilabrum 新种 5. 长头散白蚁Reticulitermes longicephalus新种 6. 太长鼻白蚁Schedorhinotermes magnus 新种 白蚁科Termitidae 7. 等齿笨白蚁 Eurytermes isodentatus新种 8. 自翅原歪白蚁Procapritermes albipennis新种 9. 隆额歪白蚁 Capritermes pseudolaetus新种 10. 小歪白蚁Capritermes minutus新种 11. 云南土白蚁 Odontotermes(O.)yunnanensis 新种 12. 细颚土白蚁Odontotermes(O.)angustignathus新种 13. 小头蛮白蚁Microtermes dimorphus新种 14. 栗色象白蚁 Nasutitermes fulvus新种 15. 角头象白蚁 Nasutitermes deltocephalus 新种 16. 直鼻象白蚁 Nasutitermes orthonasus新种 17. 翘鼻象白蚁 Nasutitermes erectinasus 新种 18. 大鼻象白蚁 Nasutitermes grandinasus 新种 19. 圆头象白蚁 Nasutitermes communis新种 20. 丘额象白蚁 Nasutitermes sinuosus新种 21. 黄色象白蚁 Nasutitermes parafulvus 新种     

四川毛茛科二新种——乌头属一新种和唐松草属一新种

该文描述了自四川西部发现的毛茛科二新种,包括四川乌头属一新种,即泸定乌头(Aconitum ludingense W.T.Wang),此新种隶属于乌头属乌头亚属,以及四川唐松草属一新种,即狭药唐松草(Thalictrum stenantherum W.T.Wang),给出了此新种与其近缘种六脉萼唐松草之间的形态区别.     

中国南方肖蛸科蜘蛛的研究（蛛形纲：蜘蛛目）

本文记述我国云南省、湖南省、广西省产的肖蛸科蜘蛛,共6新种,其中银鳞蛛属5新种,肖蛸属1新种。文内对各新种均作了详细描述,并绘制有外雌器和触肢器等结构图。全部模式标太保存在湖南师范学院生物系。种名为:三角银鳞蛛,新种Leucauge trigonosa sp.nov.纽银鳞蛛,新种Leucauge lygisma sp.nov.瘤银鳞蛛,新种Leucouge tuberculata sp.nov.楔银鳞蛛,新种Leucauge sphenoida sp.nov.筒银鳞蛛,新种Leucauge cylindrata sp.nov.钩形肖蛸,新种Tetragnatha aduncata sp.nov.     

我国南方巨蟹蛛属六新种（蜘蛛目：巨蟹蛛科）

本文记述了湖南省、广西壮族自治区、云南省和江西省产的巨蟹蛛属蜘蛛六新种,并绘制有外雌器和触肢器结构图。模式标本保存在湖南省生物研究所。种名:铃形巨蟹蛛新种Hete-ropoda campanacea sp.nov.;鳞片巨蟹蛛,新种Heteropoda squamaceasp.nov.;庐山巨蟹蛛,新种Heteropoda lushanensissp.nov.;细刺巨蟹蛛,新种Heteropoda spiculatasp.nov.;城步巨蟹蛛,新种Heteropoda chengbuensis sp.nov.;锯齿巨蟹蛛,新种Heteropoda serratasp.nov.     

贵州省棘蝇属三新种记述（双翅目：蝇科）

本文记述采自贵州地区的棘蝇属Phaonia 3新种:变色棘蝇,新种Ph.varicolor sp.nov.宽阔水棘蝇,新种Ph.kuankuoshuiensis sp. nov.及曲叶棘蝇,新种Ph.curvicercalis sp.nov.。文中绘有各新种雄尾器特征图。     

湖南省暗蛛科2新种(蛛形纲:蜘蛛目)

记述采自湖南省的暗蛛科2新种,命名为南岳隙蛛,新种Coelotes nanyuensis sp. nov. 和建辉化冠蛛,新种Cornilla jianfen sp. nov.。     

中国隙蛛属四新种和一新纪录种记述(蜘蛛目:漏斗蛛科)

本文报道朱传典采自四川省和吉林省的隙蛛属(Coelotes)蜘蛛四新种和一新纪录种:三重隙蛛,新种C.trifasaiatussp.nov.;杯状隙蛛,新种C.tryblionatussp.nov.;龙骨隙蛛,新种C.tropidosatussp.nov.;螺形隙蛛,新种C.gyriniformissp.nov.和游荡隙蛛C.erraticusNishikawa,1983。     

四川鱼类寄生吸虫Ⅱ.尾孔科、孔肠科和鳞肉科一新属四新种(吸虫纲:复殖目)

本文描述了采自四川鱼类肠道的复殖吸虫一新属四新种,它们是:1.(鱼兆)尾孔吸虫,新种Urotrema glyptothoraci sp.nov.,2.裂腹鱼斜孔吸虫,新种Plagioporus(Plagioporus)schizothoraci sp.nov.,3.异巢斜孔吸虫,新种Plagioporus(Plagioporus)allovaris sp.nov.,4.类宫殖属,新属Hysterogonoidet gen.nov.及模式种——双囊类宫殖吸虫,新种Hysterogonoldes disaccus sp.nov.。这些新属新种分别隶于尾孔科Urotrematidae、孔肠科Opecoelidae和鳞肉科Lepocreadiidae。     

广东哺乳类及两栖类寄生吸虫四新种的记述（吸虫纲：蹲茎科,蛙蠕科）

作者在广东省梅县市发现四个吸虫新种:1.鼠丽色吸虫,新种Reesella ratta sp. nov., 2.后囊蛙蠕吸虫,新种Batrachotrema optstosacca sp. nov., 3.梅县后平睾吸虫,新种Opisthioparorchis meixianensis sp. nov., 4.大卵后平睾吸虫,新种Opisthioparorchis megaloonos sp. nov.,它们分别归隶于蹲茎科Cathaemasiidae及蛙蠕科Bstrachotrematidae。模式标本保存于中山医科大学寄生虫学研究所。     

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.