河北大学博物馆馆藏蝗总科的新属和新种(直翅目)

在整理河北大学博物馆馆藏的蝗总科标本中,发现1新属4新种,它们为斑腿蝗科Catantopidae的广西龙川蝗Longchuanacris guangxiensis sp.nov.,斑翅蝗科Oedipodidae的拟短腿蝗属Parahilethera gen.nov.,西藏拟短腿蝗Parahilethera xizangensis sp.nov.及淡黑纹束颈蝗Sphingonotus caerulistriatus sp.nov.,网翅蝗科Arcypteridae的拟中宽雏蝗Chorthippus parapricarius sp.nov..模式标本保存于河北大学博物馆.     

中国蝗虫三新种及雪山雏蝗雄性记述(直翅目,网翅蝗科)

记述中国滇西北地区网翅蝗科3新种,即长翅缺背蝗Anaptygus longipennis sp.nov.、老君山牧草蝗Omocestus laojunshanensis sp.nov.、马耳山牧草蝗Omocestus maershanensis sp.nov.,另描述了雪山雏蝗Chorthippus xueshanensis Zheng et Mao的雄性.所有标本保存于大理学院生命科学与化学系.     

中国切翅蝗属两新种(直翅目: 蝗总科: 斑腿蝗科)

记述了采自台湾和云南的斑腿蝗科Catantopidae切翅蝗属Coptacra stal2新种,即台湾切翅蝗C.aiwanensis sp.nov.和云南切翅蝗C.yunnanensis sp.nov.。新种模式标本保存于河北大学博物馆。     

新疆斑翅蝗科一新属及二新种记述(直翅目,蝗总科)

记述采自新疆斑翅蝗科昆虫1新属2新种,即拟长距蝗属Longipternisoides gen.nov.、平缘拟长距蝗Longipternisoides glabimarginis sp.nov.及拟黑翅痂蝗Bryodema nigropteroides 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.     

新疆斑翘蝗科三新种（直翅目，蝗总科）

记述分布在新疆地区斑翅蝗科Ocdipodidae3新种,即蓝胫胫刺蝗Compsorhipis cyanitibia sp.nov,黑肛束颈蝗Sphingonotus peliepiproct sp.nov。及托里束颈蝗Sphingonotus toliensis sp.nov,模式标本保存于陕西师范大学动物研究所标本室。     

青海省牧草蝗属二新种(直翅目:网翅蝗科)

记述采自青海省网翅蝗科牧草蝗属2新种,即平安牧草蝗Omocestus pinanensis sp.nov。及青海湖牧草蝗Omocestus qinghaihuensis sp.nov。模式标本保存于陕西师范大学动物研究所。     

新疆束颈蝗属二新种记述(直翅目,斑翅蝗科)

记述采自新疆维吾尔自治区乌鲁木齐地区的斑翅蝗科Oedipodidae 2新种,即乌鲁木齐束颈蝗Sphingonotuswulumuqiensis sp.nov.和雅玛里克山束颈蝗Sphingonotus yamalikeshanensis 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.     

滇、桂蝗虫新属和新种(直翅目,蝗总科)

记述采自云南西双版纳地区及广西河池地区蝗总科昆虫1新属、3新种及1新亚种,即云南板胸蝗Spathosternum prasiniferum yunnanense ssp.nov.,黑股切翅蝗Coptacra nigrifemura sp nov.,脊背蝗属Tectiacris gen.nov.,斑腿脊背蝗Tectiacris maculifemura sp.nov.及勐腊束颈蝗Sphingonotus menglaensis 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.     

陕西束颈蝗属二新种记述(直翅目,斑翅蝗科)

记述采自陕西柞水的斑翅蝗科Qedipodidae束颈属蝗属Sphingonotus Fieber 2新种,即直纹束颈蝗Sphingonotus striatus sp.nov.和张氏束颈蝗Sphingonotus zhangi 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.     

湖南蝗虫二新种 (直翅目：斑腿蝗科)

 记述斑腿蝗科 Catantopidae 卵翅蝗属Caryanda Stal ,1878一新种雪峰山卵翅蝗C.xuefengshanensis sp.nov. 和蹦蝗属Sinopodisma C hang,1940 一新种大围山蹦蝗S.daweishana sp.nov.。前者标本采自湖南省黄桑自然保 护区（绥宁县）;后者标本采自湖南省大围山国家森林公园(浏阳市)。     

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.