中国彩蛾蜡蝉属分类研究(半翅目,蛾蜡蝉科)

综述了彩蛾蜡蝉属Cerynia St(a)l的分类研究历史,研究中国彩蛾蜡蝉属种类.记述中国彩蛾蜡蝉属4种,包括1新种--指突彩蛾蜡蝉C.digitula sp.nov..提供了分种检索表.新种模式标本保存在西北农林科技大学昆虫博物馆.     

中国颜袖蜡蝉属一新种（半翅目：袖蜡蝉科）

综述了颜袖蜡蝉属Vivaha Distant,1906的分类研究历史,提供了分种检索表。记述中国颜袖蜡蝉属1新种——洁颜袖蜡蝉Vivaha rectificata,sp.nov.,模式标本保存在西北农林科技大学昆虫博物馆。     

蒙瓢蜡蝉属Mongliana Distant的分类研究（同翅目：蜡蝉总科：瓢蜡蝉科）

综述蒙瓢蜡属的分类研究历史，记述中国蒙瓢蜡蝉属Mongliana Distant 7种，其中包括5新种：柔尖蒙飘蜡蝉Mongoliana lanceolata,sp.nov.,三角蒙飘蜡蝉Mongoliana triangularis,sp.nov，锯缘蒙瓢蜡蝉Mongoliana serrata,sp.nov.,褐斑蒙瓢蜡蝉Mongoliana naevia,sp.nov.和曲纹蒙瓢蜡蝉Mongoliana sinuata,sp.nov.绘制了雄性外生殖器及前翅主要特征图，并列有分种检索表。新种模式标本均保存在西北农林科技大学昆虫博物馆。     

加藤蝉属二新种：同翅目：蝉科

本文记述加藤蝉属２新种：太白加藤蝉Ｋａｔｏａ ｔａｉｂａｉｅｎｓｉｓ与寡刺加藤蝉Ｋ．。模式标本存于西北农业大学昆虫博物馆与神经农学院植物保护系。     

痕叶蝉属一新种（同翅目：叶蝉科：隐脉叶蝉亚科）

记述痕叶蝉属Mohunia Distant 1新种——双斑痕叶蝉M.biguttata,sp．nov．。模式标本保存在贵州大学昆虫研究所。     

刺茎叶蝉属四新种（同翅目：离脉叶蝉科）

本文记述刺茎叶蝉属4新种:横迹刺茎叶蝉Taharana trackana sp.nov.,红带刺茎叶蝉Taharana ruficincta sp.nov.,白斑刺茎叶蝉Taharana albopunctata sp.nov.,横带刺茎叶蝉Taharana fasciana sp.nov.。文中对每一新种的形态和雄性外生殖器构造特征进行了详细的描述,并附主要特征图。     

中国雅角蝉属一新种：同翅目：角蝉科

中国雅角蝉属一新种（同翅目：角蝉科）袁锋,范骁凌（西北农业大学昆虫研究所陕西省杨陵区７１２１００）本文记述了采自云南勐腊、勐养雅角蝉属ＣｅｎｔｒｏｃｈａｒｅｓＳｔｌ１新种。模式标本保存于西北农业大学昆虫博物馆。花翅雅角蝉Ｃｅｎｔｒｏｃｈａｒｅｓｐｏｒ...     

脊额瓢蜡蝉属分类研究（同翅目：蜡蝉总科：瓢蜡蝉科）

综述了脊额瓢蜡蝉属的分类研究历史,记述中国脊额瓢蜡蝉属Gergithoides Schumacher 4个种,其中2个新种：Gergithoides undulatus Wang et CHe,sp.nov.和Gergithoides gibbosus Chou et Wang,sp.nov.,绘制了雄性外生殖器及外部形态主要特征图,并列有种的检索表。新种模式标本均保存在西北农林科技大学昆虫博物馆。     

中国新记录属——尼小叶蝉属Nikkotettix分类 （同翅目：叶蝉科：小叶蝉亚科）

报道中国小叶蝉亚科绿小叶蝉族1新记录属－－尼小叶蝉属Nikkotettix Matsumura,1931，记述2新种：尖突尼小叶蝉N.cuspidata和太白尼小叶蝉N.taibaiensis,spp.nov.,及2个中国新记录种：埃里尼小叶蝉N.erythrinae Dworakowska，伽氏尼小叶蝉N.galloisi Matsumura n.recs.,编制了分种检索表，绘制了新种的鉴别特征图，所有标本均保存在西北农林科技大学昆虫博物馆（NWSUAF）。     

中国小叶蝉属栎小叶蝉种团及三新种记述（半翅目：叶蝉科：小叶蝉亚科）

对中国小叶蝉属栎小叶蝉种团研究进行了追溯。记述栎小叶蝉种团3新种:周氏小叶蝉T.choui sp.nov.,大理小叶蝉T.daliensis sp.nov.,三斑小叶蝉T.trimaculata sp.nov.及1中国新记录种:栎小叶蝉T.quercus(Fabricius,1777),并提供中国栎小叶蝉种团雄虫检索表。模式标本及观察标本存放于西北农林科技大学昆虫博物馆。     

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.     

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     

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.     

鸡传染性法氏囊病病毒研究进展

传染性法氏囊病(Infection bursal disease, IBD)是由鸡传染性法氏囊病毒(Infectious bursal disease virus, IBDV)引起的鸡和火鸡的一种高度接触性传染病,给世界各国的禽养殖业带来了巨大损失.自IBDV发现至今新的变异株不断出现,分子结构的改变导致病毒致病力的改变及宿主对疫苗应答的改变,使得传统的疫苗已不能控制其流行,因此各国学者对其基因组结构和功能进行了广泛深入的研究,并积极研制新型有效的疫苗以达到防治的目的.     

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.     

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).