中国台蚱属三新种：（直翅目：蚱科）

本文记述采自云南、广西及西藏地区蚱科三新种,即云南台蚱Formosatettix yunnanensis sp.nov.,短背台蚱Formosatettix brachynotus sp.nov.和短角台蚱Formosatettix brevicornus sp.nov.。     

云南省蚱总科四新种记述(直翅目)

记述采自云南省瑞丽和东川地区蚱总科4新种,即瑞丽羊角蚱Criotettix ruiliensis,sp.nov.,凹缘台蚱Formosatettix curvimarginus,sp.nov.,东川台蚱Formosatettix dongchuanensis,sp.nov.及缺翅悠背蚱Euparatettix apterus.sp.nov..模式标本保存于陕西师范大学动物研究所及西南林学院云南省森林灾害预警与控制重点实验室标本室.     

滇西横断山地区台蚱属三新种(直翅目,蚱科)

记述云南省西部横断山地区台蚱属3新种,即香格里拉台蚱Formosatettix xianggelila sp.nov.,凹缘台蚱Formosatettix camurimargina sp.nov.及无量山台蚱Formosatettix wuliangshanensia sp.nov..此外还记载因异物同名而改名的拟双背蚱属Paramphinotus.模式标本保存于西南林学院昆虫标本室.     

广西台蚱属（Formosatettix Tinkham）二新种记述（直翅目：蚱科）

本文记述采自广西地区台蚱屑二新种,即大瑶山台蚱Formosatettix dayaoshanensis,sp.nov.及元宝山台蚱Formosatettix yuanbaoshanensis,so.nov.     

中国蚱科两新种记述（直翅目：蚱总科）

记述蚱科Tetrigidae 2新种,即黑背尖顶蚱Teredorus benotus ,sp.nov．及天目山台蚱Formosatettix tianmushanensis,sp.nov。模式标本保存于南开大学生物系昆虫标本室。     

滇西北玉龙雪山地区蚱总科昆虫及四新种(直翅目)

记述2005~2006年在云南省玉龙雪山地区调查的蚱总科昆虫3科8属19种,其中包括4新种,即短翅蚱Tetrix brevipennis,sp.nov.、白斑台蚱Formosatettix albomaculata,sp.nov.、雪山台蚱Formosatettix xueshanensis,sp.nov.及丽江悠背蚱Euparatettix lijiangensis,sp.nov.。模式标本保存于西南林学院标本馆昆虫标本室及陕西师范大学动物研究所。     

广东省蚱总科二新种记述(直翅目)

记述采自广东省北部南岭山区蚱总科2新种,即短翼蚱科的齿股玛蚱Mazarredia serrifemura,sp.nov.及蚱科的南岭台蚱Formosatettix ngnlingensis,sp.nov..模式标本保存于陕西师范大学动物研究所.     

吉林省松花湖库区台蚱属一新种(直翅目,蚱总科)

记述采自吉林省吉林市松花湖库区的蚱总科台蚱属1新种：长角台蚱Formosatettix longicornia sp.nov．。     

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。     

中国长白山地区台蚱属一新种记述(直翅目,蚱总科)

记述了采自吉林省长白山地区台蚱属1新种,即长白山台蚱Formosatettix changbaishanensis sp．nov．。新种与广东台蚱Formosatettix senlinensis Liang,1991相似,与其做了比较。模式标本保存在东北师范大学生命科学学院标本中心。     

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).