中国裸齿角石蛾属五新种(毛翅目,齿角石蛾科)

描述了裸齿角石蛾属Psilotreta kwantungensis种团的5新种,即弯钩裸齿角石蛾Psilotreta anfracta sp.nov.,直角裸齿角石蛾Psilotreta rectangula sp.nov.,具刺裸齿角石蛾Psilotreta spinata sp.nov.,细刺裸齿角石蛾Psilotreta tenuispina sp.nov.,以及缺肢裸齿角石蛾Psilotreta expers sp.nov.。模式标本保存于南京农业大学昆虫标本馆。     

中国裸齿角石蛾属三新种(毛翅目,齿角石蛾科)

描述了裸齿角石蛾属3新种:细尖裸齿角石蛾Psilotreta apiculata sp.nov.,叠肢裸齿角石蛾Psilotreta superposita sp.nov.和单刺裸齿角石蛾Psilotreta monacantha sp.nov.,并提供了中国及邻近地区该属种类的种组检索表.模式标本保存于南京农业大学昆虫标本馆.     

中国裸齿角石蛾属四新种(毛翅目,齿角石蛾科)

记述我国裸齿角石蛾属,广东裸齿角石蛾种组4新种,即粗裸齿角石蛾Psilotreta grossa sp.nov.,多刺裸齿角石蛾Psilotreta horrida sp.nov.,云南裸齿角石蛾Psilotreta yunnanensis sp.nov.,以及宽扁裸齿角石蛾Psilotreta applanata sp.nov..提供了广东裸齿角石蛾种组的鉴别特征及中国种雄成虫检索表.模式标本均保存于南京农业大学昆虫标本馆.     

中国裸齿角石蛾属三新种(毛翅目,齿角石蛾科)

描述了裸齿角石蛾属3新种,即脊状裸齿角石蛾Psilotreta vertebrata sp.nov.(广东)、方背裸齿角石蛾Psilotreta cuboides sp.nov.(云南)和凹入裸齿角石蛾Psilotreta excavata sp.nov.(江西)。模式标本保存于南京农业大学昆虫标本馆。     

中国江西裸齿角石蛾属二新种(毛翅目,齿角石蛾科)

描述了裸齿角石蛾属2新种,即背裂裸齿角石蛾Psilotreta dehiscentis sp.nov.和前伸裸齿角石蛾Psilotreta porrecta sp.nov..标本采集于江西,模式标本保存于南京农业大学昆虫标本馆.     

中国裸齿角石蛾属二新种及一新纪录种(毛翅目,齿角石蛾科)

描述了裸齿角石蛾属2新种,二叉裸齿角石蛾Psilotreta bicruris sp.nov.和小叶裸齿角石蛾Psilotreta paulula sp.nov.;及1新纪录种,加氏裸齿角石蛾Psilotreta jaroschi Malicky,1995。新种及新纪录种模式标本保存于南京农业大学昆虫标本馆。     

中国弓石蛾属两新种记述(毛翅目,纹石蛾科,弓石蛾亚科)

记述了弓石蛾属2新种,分别是采自云南的三突茎弓石蛾Arctopsyche triacanthophora sp.nov.及采自四川的黄氏弓石蛾Arctopsyche huangi sp.nov..模式标本保存于南京农业大学昆虫标本馆.     

中国伪突沼石蛾属五新种记述（毛翅目：沼石蛾科）

记述伪突沼石蛾属5新种：钩肢伪突沼石蛾Pseudostenophylax uncatus,sp.nov.,河北伪突沼石蛾P.hebeiensis,sp.nov.,青海伪突沼石蛾P.qinghaiensis,sp.nov.,侧凸伪突沼石蛾P.latiproceris和莫氏伪突沼石蛾P.morsei,sp.nov.。模式标本保存于南京农业大学昆虫标本室。     

中国缺叉多距石蛾属六新种(毛翅目,多距石蛾科)

记述了缺叉多距石蛾属6新种:即圆叶缺叉多距石蛾Polyplect ropusrotundifolius sp.nov.,三歧缺叉多距石蛾Polyplectropus trifurcatus sp.nov.,三角缺叉多距石蛾Polyplectropus trigonius sp.nov.,钩状缺叉多距石蛾Polyplectropusunci formis sp.nov.,指状缺叉多距石蛾Polyplectropus digitaliformis sp.nov.,具针缺叉多距石蛾Polyplectropus aciculatus sp.nov.。新种模式标本保存于南京农业大学昆虫标本馆。     

中国缺叉多距石蛾属六新种记述(毛翅目,多距石蛾科)

研究了中国毛翅目多距石蛾科缺叉多距石蛾属种类,并报道了其中亲缘关系较近的6新种,即端截缺叉多距石蛾Polyplectropus truncatufus sp.nov.,端突缺叉多距石蛾Polyplectropus convexus sp.nov.,斧端缺叉多距石蛾Polyplectropus dolabriformis sp.nov.,颚状缺叉多距石蛾Polyplectropus mandibuliformis sp.nov.,距枝缺叉多距石蛾Polyptectropus rectangulus sp.nov.,喙端缺叉多距石蛾Polyplectropus rostriformis sp.nov..新种模式标本保存在南京农业大学昆虫标本馆.     

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.