甘肃陇东农业害虫主要寄生性天敌昆虫

本文报道了甘肃陇东农业害虫主要寄生性天敌昆虫.通过饲养玉米螟Ostrinia furnacalis Guenee.胡麻短纹卷蛾Falseuncaria kaszabi Razowski.桃小食心虫Carposina niponensis Walsingham.梨星毛虫Illiberispruni Dxar.梨大食心虫Nephopteryxpirivorella Matsumura.苹果巢蛾Hyponomeuts malinella Zeller.苹果球蚧Rhodococcus sariuoni Borchs.等9种农业害虫,观察记录了大螟瘦姬蜂Eriborus terebrans(Gravenhorst).派姬蜂Paraperthous sp.金小蜂Eupteromalus sp.多胚跳小蜂Copidosoma sp.无脊大腿小蜂Brachymeria excarinata Gahan.绒茧蜂Apanteles sp.日本黄茧蜂Meteorus japonicus Ashmead.折肛短须寄蝇Linnaemya scutellaris(Malloch).卷蛾寄蝇Blondelia spp.选择盆地寄蝇Bessa selecta fugax Rondani.黄眶离缘姬蜂Trathala flavo-orbitadis Cameron.梨大长尾瘤姬蜂Gregopimpla sp.苹果巢蛾跳小蜂Ageniaspis fuscicollis(Dalman).蓝绿跳小蜂Blastothrix spl.等23种寄生性天敌昆虫.黑光灯诱集,发现地蚕大铗姬蜂Eutanyacrapicta Schrank.细颚姬蜂Enicospilus sp.瘦姬蜂Ophion sp.距茧蜂Homolobussp.等6种寄生性天敌昆虫.计29种寄生性天敌昆虫,隶属姬蜂科Ichneumonidae.茧蜂科Braconidae.小蜂科Chalcididae.金小蜂科Pteromalidae.跳小蜂科Encyrtidae.寄蝇科Larvaevovidae.等9科.其中苹果巢蛾跳小蜂为国内首次记录.     

枣镰翅小卷蛾的一种寄生蜂——突尼斯埃姬蜂

本文简要记述了枣镰翅小卷蛾Ancylis sativa Liu的1种寄生蜂--突尼斯埃姬蜂Itoplectis tunetarta(Schmiedeknecht)成虫的形态特征、寄主以及分布.     

寄生高山毛顶蛾的姬蜂科(膜翅目)中国一新纪录种

报道采自青海寄生高山毛顶蛾Eriocrania semipurpurella alpina Xu,1990(寄主新纪录)的姬蜂科中国1新纪录种:基镰尾姬蜂Grypocentrus basalis Ruthe,1855,对其形态特征进行了重新描述并配有特征图.     

中国寄生叶蜂类的卷唇姬蜂

报道我国寄生叶蜂类的卷唇姬蜂属AptesisF?rster,1850的3种,其中含寄生玫瑰三节叶蜂ArgepaganaPanzer的中国1新记录:白基卷唇姬蜂Aptesisalbibasalis(Uchida,1930)。编制了卷唇姬蜂属中国已知种检索表。     

樟子松球果象甲曲姬蜂的生物学特性观察

<正> 1974年在呼伦贝尔盟红花尔基林区首次发现樟子松球果象甲Pissodes validirostris Gyll.(以下简称象甲)的天敌——樟子松球果象甲曲姬蜂Scambus sp.(以下简称曲姬蜂),国内尚无记载。1975—1978年,对曲姬蜂的生物学特性及其应用进行了调查研究,现将情况初报如下:     

中国钝唇姬蜂属三新种(膜翅目:姬蜂科)及二寄主新纪录(英文)

本文报道钝唇姬蜂属三新种乌钝唇姬蜂Eriborusfurvus,sp.nov.,沈阳钝唇姬蜂Eriborusshenyangensis,sp.nov.,柄钝唇姬蜂Eriborusstipitatus,sp.nov.和大螟瘦姬蜂E．terebrans（Gravenhorst）的二寄主新纪录,白杨透翅蛾ParanthrenetabaniformisRott.和青杨天牛SaperdapopulneaL．     

云南梢小卷蛾属二新种 (鳞翅目:卷蛾科)

专门为害松树嫩梢的钻蛀性害虫梢小卷蛾属Rhyacionia Hb.在我国已知有四种,它们是:夏梢小卷蛾R.duplana(Hb.),松梢小卷蛾R.pinicolana(Dbld.),马尾松梢小卷蛾R.dativa Hein.和云南松梢小卷蛾R.insulariana Liu。1982年在全国森林病虫普查时,在云南会泽和云南宜良发现梢小卷蛾二新种。现分述如下;长梢小卷蛾Rhyacionia dolichotubula,新种(图2、5)     

中国尾小卷蛾亚族三新种(鳞翅目:卷蛾科)

尾小卷蛾亚族Sorolophae属于卷蛾科、新小卷蛾族Olethreutini。这一亚族包括3个属:圆斑小卷蛾属Eudemopsis,圆点小卷蛾属Eudemis和尾小卷蛾属Sorolopha。作者曾对其中圆斑小卷蛾属在中国的8种进行了研究。现在又对其他两属进行了研究,发现圆点小卷蛾属有3种,其中有一新种;尾小卷蛾属有5种,其中有二新种,它们是: 1.栋圆点小卷蛾Eudemis porphyrana Hübner:黑龙江伊春、四川卧龙、江西井     

拟顶小卷蛾属分类研究

本文系统研究了拟顶小卷蛾属Pseudacroclita Oku,共记述4种,除已知种拟顶小卷蛾P. hapalaspis (Meyrick)外,还有2个新种（突拟顶小卷蛾P. projecta sp. nov.和钩拟顶小卷蛾P. micrancistra sp. nov.）及1中国新记录种［黄斑拟顶小卷蛾P. luteispecula (Kuznetsov)］。提供了4个种的成虫照片和外生殖器特征图,给出了该属已知种的分种检索表。新种的模式标本保存在南开大学生物系。     

中国兜姬蜂属分类研究(膜翅目,姬蜂科)

报道兜姬蜂属Dolichomitus Smith 1新种:嵩兜姬蜂Dolichomitus songxianicus Sheng,sp.nov.及中国2新纪录种:头兜姬蜂D.cephalotes(Holmgren)、卡西兜姬蜂D.khasianus Gupta et Tikar.编制了中国已知的14种2亚种检索表.     

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).     

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.