南海北部近海水螅虫总纲四新种和二新纪录研究(刺胞动物门,自育水母纲,水螅水母纲)

记述了南海北部近海水螅虫总纲4新种和2新纪录,即自育水母纲的顶胃穴水母岛Sminthea apicigastrica Xu,Huang et Du,sp.nov.,水螅水母纲的距拟双手水母Codonorchis calcariformis Xu,Huang et Guo,sp.nov.,南海多管水母Aequorea nanhainensis Xu,Huang et Du,sp.nov.,四手多管水母Aequorea tetranema Xu,Huang et Du,sp.nov.,深水拟单手水母Paragotoea bathybia Kramp,1942和母螅镰螅水母Zanclea medusopolypata Boero,Bouillon et Gravili,2000.并讨论了新种与近缘种的区别,模式标本保存在中国水产科学研究院南海水产研究所.     

云南省西南部蚱科的新种(直翅目)

记述云南省西南部蚱科7新种,即云南夏蚱Xiaitettix yunnanensis Zheng et Mao,sp.nov.、粗角版纳蚱Bannatettix oedicerus Zheng et Xu,sp.nov.、断隆蚱Tetrix interrupta Zheng et Xu,sp.nov.、五老山台蚱Formosatettix wulaoshanensis Zheng et Xu,sp.nov.、宽顶突眼蚱Ergatettix lativertex Zheng et Xu,sp.nov.、孟连悠背蚱Euparatettix menglianensis Zheng et Xu,sp.nov.及白斑悠背蚱Euparatettix albomaculatus Zheng et Xu,sp.nov.。模式标本保存于陕西师范大学动物研究所昆虫标本室。     

台湾海峡及其邻近海区单肢水母属的研究(丝螅水母目,高手水母科)

记述了台湾海峡及其邻近海区高手水母科Bougainvillidae Lutken,1850单肢水母属Nubiella Bouillon,1980 6新种和1新组合,即棍棒单肢水母Nubiella claviformis Xu,Huang et Lin,sp.nov.,间腺单肢水母N.intergona Xu,Huang et Lin,sp.nov.,大胃单肢水母N.macrogastera Xu,Huang et Lin,sp.nov.,大腺单肢水母N. macrogona Xu,Huang et Guo,sp.nov.,口刺单肢水母N. oralospinela Xu,Huang et Guo,sp.nov.,乳突单肢水母N. papilaris Xu,Huang et Guo,sp.nov.和阿尔单肢水母N.alvarinoae(Segura,1980)comb.nov.,并讨论了它们与近缘种的区别,同时将单肢水母属已知种作个检索表.模式标本保存在厦门大学海洋学系.     

大嘴瘿螨亚科一新属四新种二新亚种记述（蜱螨亚纲：大嘴瘿螨科）

新属为四脊瘿螨属Quadriporca Kuang et Chen,gen.nov.。四个新种是杧果四脊瘿螨Quadriporca mangiferae Kuang et Chen,sp.nov.,柘多弯瘿螨Peralox cudraniae Kuang et Hong,sp.nov.,珍珠梅鼻植羽瘿螨Rhinophytoptus sorbariae Kuang et Hong,sp.nov.,朴大嘴瘿螨Rhyncaphyioptus celtis Kuang et Hong,sp.nov.。新亚种有重庆榆大嘴瘿螨Rhynoaphytoptus ulmi Chongqingensis Kuang et Hong,ssp.nov,和湖北大嘴瘿螨Rhyncaphytoptus lushanensis Hupehensis Kuang et Hong,ssp.nov。     

台湾海峡及其邻近海区珍妮水母属的研究(丝螅水母目,面具水母科)

记述了台湾海峡及其邻近海区面具水母科Pandeidae Haeckel,1870珍妮水母属faniopsis Bouillon,1980 5新种,即顶斑珍妮水母faniopsis apicispottis Xu,Huang et Lin,Sp.nov.、短距珍妮水母f.brevispura Xu,Huang et Guo,sp.nov.、大球珍妮水母f.macrobulbosa Xu,Huang et Guo,sp.nov.、南沙珍妮水母f.nanshaensis Xu,Huang et Lin,sp.nov.和蹄形珍妮水母f.unguliformis Xu,Huang et Lin,sp.nov.;并讨论了它们与近缘种的区别,同时将珍妮水母属已知种作个检索表.模式标本保存在厦门大学海洋学系.     

广头叶蝉属六新种记述(半翅目,叶蝉科,广头叶蝉亚科)

记述广头叶蝉属Macropsis Lewis(半翅目,叶蝉科,广头叶蝉亚科)6新种,即褐背广头叶蝉M.castaneusLi et Liang,sp.nov.、细突广头叶蝉M.gracilis Li et Liang,sp.nov.、峨嵋广头叶蝉M.emeiensis Li et Liang,sp.nov.、王氏广头叶蝉M.wangi Li et Xu,sp.nov.、阜康广头叶蝉M.fukangensis Li et Xu,sp.nov.和凹瓣广头叶蝉M.concavus Li et Xu,sp.nov..模式标本保存在中国科学院动物研究所.     

安徽烟田4种蜘蛛记述

记述安徽凤阳和宣州烟田中蜘蛛4种:1.头突艾蛛Cyclosa cephalodina Songet Liu,sp.nov.;2.皖高亮腹蛛Hypsosinga wanica Song,Qian et Gao,sp.nov.;3.卷片花蟹蛛Xysticus crispabilis Song et Gao,sp.nov.;4.棒跃蛛Sitticus clavator Schenkel,1936。     

中国短细蜂属种类记述(膜翅目:细蜂科)

记述中国短细蜂属Brachyserphus Hellén 5种,其中包括4新种:周氏短细蜂Brachyserphus choui He et Xu,sp.nov.、天目山短细蜂Brachyserphus tianmushanensis He et Xu,sp.nov.、贵州短细蜂Brachyserphus guizho...     

中国南海棒状水母科一新属二新种和一新纪录种记述(头螅水母目,筒螅水母亚目)

记述了采自南海的棒状水母科Corymorphidae Allman,18721新属,肋突水母属Costa Huang,Xu et Lin,gen.nov.,2新种,即南海肋突水母Costa nanhaiensis Huang,Xu et Lin,sp.nov.,间腺梅尔水母Mayeri intergona Huang,Xu et Guo,sp.nov.和1新纪录种,幼芽真囊水母Euphysora gemmifera Bouillon,1978。详细描述其形态特征,并绘图与本属其它种进行比较,模式标本保存于国家海洋局第三海洋研究所。     

齿爪盲蝽属新种及新名记述(半翅目,盲蝽科,齿爪盲蝽亚科)

记述了齿爪盲蝽属2新种及1新名.新种为:平背齿爪盲蝽Deraeocoris planus Xu et Ma,sp.nov.,淡足齿爪盲蝽Deraeocoris luteolus Xu et Liu,sp.nov..以新名Deraeocoris magnioculatus代替Deraeocoris oculatus Ma et Liu2002.模式标本保存于南开大学昆虫学研究所.     

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.     

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.     

Enterovirus 71 3C proteolytically processes the histone H3 N-terminal tail during infection

Highlights
1. The N-terminal tail of histone H3 is specifically cleaved during EV71 infection.
2. Viral protease 3C is identified as a protease responsible for proteolytically processing the N-terminal H3 tail.
3. Our finding reveals a new epigenetic regulatory mechanism for Enterovirus 71 in virus-host interactions.     

Detection of EBV and HHV6 in the Brain Tissue of Patients with Rasmussen’s Encephalitis

Rasmussen’s encephalitis (RE) is a rare pediatric neurological disorder, and the exact etiology is not clear. Viral infection may be involved in the pathogenesis of RE, but conflicting results have reported. In this study, we evaluated the expression of both Epstein-Barr virus (EBV) and human herpes virus (HHV) 6 antigens in brain sections from 30 patients with RE and 16 control individuals by immunohistochemistry. In the RE group, EBV and HHV6 antigens were detected in 56.7% (17/30) and 50% (15/30) of individuals, respectively. In contrast, no detectable EBV and HHV6 antigen expression was found in brain tissues of the control group. The co-expression of EBV and HHV6 was detected in 20.0% (6/30) of individuals. In particular, a 4-year-old boy had a typical clinical course, including a medical history of viral encephalitis, intractable epilepsy, and hemispheric atrophy. The co-expression of EBV and HHV6 was detected in neurons and astrocytes in the brain tissue, accompanied by a high frequency of CD8⁺ T cells. Our results suggest that EBV and HHV6 infection and the activation of CD8⁺ T cells are involved in the pathogenesis of RE.