广西蚱科四新种记述(直翅目：蚱总科)

本文记述采自广西状族自治区大青山及大瑶山地区蚱科昆虫４新种,即龙州蚱Ｔｅｔｒｉｘｌｏｎｇｚｈｏｕｅｎｓｉｓ ｓｐ．ｎｏｖ．、广西拟台蚱Ｆｏｒｍｏｓａｔｅｔｔｉｘｏｉｄｅｓ ｇｕａｎｇｘｉｅｎｓｉｓ ｓｐ．ｎｏｖ．、黑胫真长背蚱Ｅｕｐａｒａｔｅｔｔｉｘ ｎｉｇｒｉｔｉｂｉｓ ｓｐ．ｎｏｖ．及长翅拟真长背蚱Ｅｕｐａｒａｔｅｔｔｉｘｏｉｄｅｓ ｌｏｎｇｉｐｅｎｎｉｓ ｓｐ．ｎｏｖ．。     

中国枝背蚱亚科的新属和新种（直翅目：蚱科）

本文报道采自四川和云南两省蚱科枝背蚱亚科２新属３新种,即蛾眉拟扁蚱Ｐｓｅｕｄｏｇｉｇｎｏｔｅｔｔｉｘ ｅｍｅｉｅｎｓｉｓ ｓｐ．ｎｏｖ．,拟后蚱属Ｐｓｅｕｄｅｐｉｔｅｔｔｉｘ ｇｅｎ．ｎｏｖ．,云南似后蚱Ｐ．ｙｕｎｎａｎｅｎｓｉｓ ｓｐ．ｎｏｖ．,云南蚱属Ｙｕｎｎａｎｔｅｔｔｉｘ ｇｅｎ．ｎｏｖ．,版纲云南蚱Ｙ．ｂａｎａｅｎｓｉｓ ｓｐ．ｎｏｖ．。     

我国蚱科一新属二新种记述（直翅目：蚱总科）

本文记述采自广西和吉林省蚱科一新属二新种,即拟真长背蚱属Ｅｕｐａｒａｔｅｔ－ｔｉｘｏｆｄｅｓｇｅｎ．ｎｏｖ．,广西拟真长背蚱Ｅｕｐａｒａｔｅｔｔｉｘｏｉｄｅｓｇｕａｎｇｘｉｅｎｓｉｓｓｐ．ｎｏｖ．及粗瓣蚱Ｔｅｔｒｉｘｇｒｏｓｓｏｖａｌｖｕｓｓｐ．ｎｏｖ．。     

广西短翼蚱科的新属和新种(直翅目:蚱总科)

记述采自广西大瑶山地区短翼蚱科一新属二新种,即拟科蚱属Ｃｏｔｙｓｏｉｄｅｓ Ｚｈｅｎｇ ｅｔ Ｊｉａｎｇ,ｇｅｎ．ｎｏｖ．广西拟科蚱Ｃｏｔｙｓｏｉｄｅｓ ｇｕａｎｇｘｉｅｎｓｉｓ Ｚｈｅｎｇ ｅｔ Ｊｉａｎｇ,ｓｐ．ｎｏｖ．及瑶山大磨蚱Ｍａｃｒｏｍｏｔｅｔｔｉｘ ｙａｏｓｈａｎｅｎｓｉｓ Ｚｈｅｎｇ ｅｔ Ｊｉａｎｇ,ｓｐ．ｎｏｖ．。模式标本保存于陕西师范大学动物研究所。     

广西地区蚱科三新种记述

本文记述采自广西壮族自治区蚱科３新种,即瘤米蚱Ｍｉｓｈｔｓｈｅｎｋｏｔｅｔｔｉｘ ｔｕｂｅｒｃｕｌａｔａ ｓｐ．ｎｏｖ．、拟喀蚱Ｔｅｔｒｉｘ ｃｅｐｅｒｏｉｄｅｓ ｓｐ．ｎｏｖ．及粗股蚱Ｔｅｔｒｉｘ ｇｒｏｓｓｉ ｆｍｅｕｒａ ｓｐ．ｎｏｖ。     

广西龙州地区蚱总科三新种记述（直翅目）

记述采自广西壮族自治区龙州地区蚱总得昆虫３新种,即黑胫拟后蚱Ｐｓｅｕｄｅ ｐｉｔｅｔｉｘ ｎｉｇｒｉｔｉｂｉｓ,ｓｐ．ｖｏｎ．、龙州羊角蚱Ｃｒｉｏｔｔｉｘ ｌｏｇｚｈｏｕｅｎｓｉｓ,ｓｐ．ｎｏｖ．及红背修背蚱Ｅｕｐａｒａｔｅｔｔｉｘ ｅｒｙｔｈｒｏｎｏｔｕｓ,ｓｐ．ｎｏｖ．。模式标本存陕西师范大学动物研究所。     

广西地区蚱科三新种记述(直翅目:蚱总科)

本文记述采自广西壮族自治区蚱科３新种,即瘤米蚱Ｍｉｓｈｔｓｈｅｎｋｏｔｅｔｉｘｔｕｂｅｒｃｕｌａｔａｓｐ．ｎｏｖ．、拟喀蚱Ｔｅｔｒｉｘｃｅｐｅｒｏｉｄｅｓｓｐ．ｎｏｖ．及粗股蚱Ｔｅｔｒｉｘｇｒｏｓｉｆｅｍｕｒａｓｐ．ｎｏｖ．。     

中国蚱科三新种记述（直翅目）

本文记述采自云南和四川省刺翼蚱亚科二新种,钝叶瘤蚱Ｔｈｏｒａｄｏｎｔａ ｏｂｔｕｓｉｌｏｂａｔａ ｓｐ．ｎｏｖ．,横刺瘤蚱Ｔｈｏｒａｄｏｎｔａ ｔｒａｓｓｐｉｃｕｌａ ｓｐ．ｎｏｖ．,及采自新疆蚱亚科一新种,新疆蚱Ｔｅｔｒｉｘ ｘｉｎｊｉａｎｇｅｎｓｉｓ ｓｐ．ｎｏｖ．。     

湖南省大磨蚱属一新种记述（直翅目∶蚱总科∶短翼蚱科）

本记述采自湖南省罗霄山西麓短翼蚱科一新种,即罗霄山大磨蚱Ｍａｃｒｏｍｏｔｅｔｔｉｘ ｌｕｏｘｉａｏｓｈａｎｅｎｓｉｓ ｓｐ．ｎｏｖ．,模式标本保存于陕西师范大学动物研究所。     

陕西省蚱科三新种记述（直翅目∶蚱总科）

记述采自陕西省佛坪自然保护区蚱科昆虫３新种,即二齿尖顶蚱Ｔｅｒｅｄｏｒｕｓ ｂｉｄｅｎｔａｔｕｓ ｓｐ．ｎ．、秦岭蚱Ｔｅｔｒｉｘ ｑｉｎｌｉｎｇｅｎｓｉｓ ｓｐ．ｎ．及波股蚱Ｔｅｔｒｉｘ ｕｎｄａｔｉｆｅｍｕｒａ ｓｐ．ｎ．。模式标本保存限陕西师范大学动物研究所标本室。     

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).