中国七纺蛛属2新种(蜘蛛目:节板蛛科)

记述采白湖北省的七纺蛛属2新种:岁田七纺蛛,新种 Ileptathela luotianensis sp. nov. 和咸宁七纺蛛,新种 Heptathela xianmngensis sp. nov.。     

中国七纺蛛属1新种（蜘蛛目：节板蛛科）

记述我国节板蛛科七纺蛛属1新种,命名为佘氏七纺蛛,新种Heptathela shei sp.nov.。     

中国七纺蛛属一新种及其变异型(蜘蛛目:节板蛛科)

记叙采自湖南省衡阳县gou嵝蜂的七纺蛛属一新种,gou嵝七纺蛛Heptathela goulouensis sp.nov.,及其变异型-雌蛛纳精器官的孪生现象。     

中国七纺蛛属一新种(蜘蛛目,节板蛛科)

记述了中国湖南省节板蛛科Liphistiidae七纺蛛属Heptathela1新种：莽山七纺蛛Heptathela mangshan sp．nov．。新种与Heptathela sinensis Bishop and Crosby,1932相似,但有如下区别：前者的引导器仅1齿,而后者的引导器具2个大齿和1个小齿;两者的反盾片都有齿,但后者在基部有2个分离的齿,前者没有;两者的插入器形状不同。新种以模式产地而命名。模式标本保存于湖南师范大学生命科学学院。     

中国南方隅蛛属和漏斗蛛属新种记述：蜘蛛目：漏斗蛛科

本文记述隅蛛属一新种和漏斗蛛属两新种:刺隅蛛,新种Tegenaria aculeata sp.nov.三角漏斗蛛,新种Agelena triangulata sp.nov.,小斑漏斗蛛,新种Agelena micropunetulata sp.nov.。     

中国蚁微蛛属2新种（蜘蛛目：皿蛛科：微蛛亚科）

记述采自我国江苏省栖霞山和浙江省西天目山蚁微蛛属2新种:胫突蚁微蛛,新种Solenysa pronlrudens sp.nov.和圆斑蚁微蛛, 新种Solenyas circUlaris sp.nov.     

我国南方八纺器蛛一新种：蜘蛛目：八纺蛛科

次坪八纺蛛,新种Liphistius cipingensis sp.nov.采自江西省井冈山次坪。正模♀保存于湖南师范大学生物系。     

中国花冠蛛属两新种(蜘蛛目:暗蛛科)

记述了花冠蛛属Coronilla 2新种,即莽山花冠蛛Coronilla mangshan sp.nov.和炎陵花冠蛛Coronilla yanling 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.     

中国隙蛛属1新种（蜘蛛目：暗蛛科）

记述我国暗蛛科隙蛛属1新种,即郴州隙蛛,新种Coelotes chenzhou sp.nov.。     

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