中国叉齿细蜂属网腰细蜂种团二新种记述(膜翅目:细蜂科)

记录我国叉齿细蜂属Exallonyx叉齿细蜂亚属Exallonyx网腰细蜂种团dictyotus-group2新种:采自陕西和浙江的黑唇叉齿细蜂Exallonyxnigrolabius,sp.nov.和采自贵州的短脊叉齿细蜂Exallonyxbrevicarinus,sp.nov.。模式标本保存于浙江大学寄生蜂标本室。     

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...     

中国中沟细蜂属种类记述(膜翅目:细蜂科)

记述中国中沟细蜂属 Parthenocodrus Pschorn-Walcher 5种,其中包括4新种:梵净山中沟细蜂P.fanjingshanensis He et Xu,sp.nov.、褐足中沟细蜂P.fu scipes He et xu,sp.nov.、鼓鞭中沟细蜂P.tumidiflagellum He et ...     

中国中沟细蜂属一新种记述(膜翅目,细蜂科)

记录我国中沟细蜂属Parthenocodrus 1新种:康定中沟细蜂P.kangdingensis sp. nov.(四川).描述了其形态特征并与近似种做了比较.模式标本存浙江大学寄生蜂标本室.     

中国脊额细蜂属分类研究(膜翅目,细蜂科)(英文)

记述了我国脊额细蜂属6种,其中2新种:卜氏脊额细蜂P.buisp.nov.和黑胫脊额细蜂P.nigritibialis sp.nov.;2新纪录种:冠脊额细蜂P.cristatus Townes et Townes和点柄脊额细蜂P.punctibasis Townes et Townes;新种和新纪录种均附有详细特征图,并编制了我国脊额细蜂属分种检索表。模式标本保存于浙江大学膜翅目寄生蜂标本馆(ZJUH)。     

中国锤角细蜂亚科一新记录属及一新种记述（膜翅目：锤角细蜂科）

首次记述锤角细蜂亚科Diapriinae 1中国新记录属--长痣锤角细蜂属Entojmacis Foerster,1856,并记述该属1新种:巾华长痣锤角细蜂 Entomacissinensis,sp,nov..模式标本保存于华南农业大学昆虫标本室.     

中国柄脉细蜂属一新种记述(膜翅目:细蜂科)

首次报道柄脉细蜂属Mischoserphus在我国发现,并记述2种,其中1新种：中华柄脉细蜂Mischoserphus sinensis,sp．nov．和1中国新记录种：佐村柄脉细蜂Mischoserphus samurai(Pschorn-Walcher)。描述了其形态特征并与近似种做了比较。模式标本保存于浙江大学寄生蜂标本室。     

细蜂亚科一新属一新种(膜翅目:细蜂科)

本文记述在我国河南省伏牛山发现的细蜂科Proctotrupidae细蜂亚科Proctotrupinae 1新属新种:中华强脊细蜂Carinaserphus sinensis gen. et sp. nov.。描述了其形态特征并与近似属做了比较。模式标本存浙江大学寄生蜂标本室。     

窄腹细蜂属二新种(膜翅目:窄腹细蜂科)

报遭窄腹细蜂属Ropronia Provancher 2 新种：梵净山窄腹细蜂R．fanjingshanensis He et Chen．sp．nov．和双斑窄腹细蜂R．bimaculata He et Chen,sp．nov。均采自贵州省。描述了形态特征并与近似种做了比较。模式标本保存于杭州浙江大学植物保护系寄生蜂标本室。     

锤角细蜂亚科中国一新纪录属及一新种记述（膜翅目：锤角细蜂科）

记述锤角细蜂科中国及东洋区1新纪录属:扁锤角细蜂属Pentapria Kieffer,1905,并描述采自云南的1新种:中华扁锤角细蜂Pentapria sinica sp.nov.。提供了形态描述、特征图以及新种与分布于古北区相似种类的鉴别检索表。模式标本保存于华南农业大学膜翅目标本室(SCAU)。     

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.     

Perinatal Vertical Transmission of Chikungunya Virus in Ruili,a Town on the Border between China and Myanmar

正Dear Editor,Chikungunya virus (CHIKV), an arbovirus in the family of Togaviridae, genus Alphavirus, is transmitted by the A.aegyptii or A. albopictus mosquito, and causes disease in humans characterized by fever, rash, and arthralgia (Silva and Dermody 2017; Suhrbier 2019). It was first reported in 1953 in Tanzania, and caused only a few outbreaks and sporadic cases in Africa and Asia in last century. However, in the epidemic in 2004, CHIKV acquired mutations that conferred enhanced transmission by the A. albopictus mosquito(Schuffenecker et al. 2006). Since then, it has successively caused outbreaks in Africa, the Indian Ocean, South East Asia, the South America, and Europe (Zeller et al. 2016).     

Development of a Novel Reverse Transcription Loop-Mediated Isothermal Amplification Method for Rapid Detection of SARS-CoV-2

In conclusion, the novel visual RT-LAMP assay is a simple, rapid, and sensitive approach for detection of SARS-CoV-2, and it is ready for application in primary care and community hospitals or health care centers, and even patients' own houses in response to the current SARS-CoV-2 epidemic because the assay does not require sophisticated equipment and skilled personnel. Furthermore, it is also ready to be used in fields for screening samples from wild animals and environments to facilitate the identification of potential intermediate hosts that mediate the cross-species transmission of SARS-CoV-2 from bats to humans.