中国小头蓟马属二新种：缨翅目：蓟马科

西方记述了中国小头蓟马属Ｍｉｃｒｏｅｐｈａｌｏｔｈｒｉｐｓ２新种－中华小头蓟马Ｍ．ｃｈｉｎｅｎｓｉｓｓｐ．ｎｏｖ。     

指蓟马属一新种及一新记录种：缨翅目：蓟马科

本文记述中国周氏指蓟马Ｃｈｉｒｏｔｈｒｉｐｓｓｐ．ｃｈｏｕｉ，ｎｏｖ．和１新记录种：喇嘛指蓟马Ｃｈｉｒｏｔｈｒｉｐｓｒａｍａｋｒｉｓｈｎａｉ。标本均保存在西北农业大学昆虫博物馆。     

中国剪管蓟马属种类及一新种记述：缨翅目：管蓟马科

本文记述了剪管蓟马属Ｐｓａｌｉｄｏｔｈｒｉｐｓ中国的６种,其中有中国新记录１种：爪哇剪管藓马：Ｐ．ａｍｅｎｓＰｒｉｅｓｎｅｒ和１新种：车八岭剪管藓马Ｐ．ｃｈｅｂａｌｉｎｇｉｃｕｓｓｐ．ｎｏｖ。模式标本存 南农业大学昆虫标本室。     

蓟马亚科一新种记述及中国新纪录种类（缨翅目：蓟马科）

本文记述蓟马亚科１新种：络石异色蓟马Ｔｒｉｃｈｒｏｍｏｔｈｒｉｐｓ ｔｒａｃｈｅｌｏｓｐｅｒｍｉ和１２种中国分布新纪录。新式标本及新纪录标本保存在华南农业大学昆虫标本室。     

外来人侵害虫——西花蓟马在山东省不同地区主要花卉上的分布

【背景】外来入侵害虫西花蓟马于2003年首次在北京郊区被发现,并逐渐扩散蔓延,目前已在我国局部地区暴发成灾。【方法】于2008～2009年通过定点调查的方法对山东省115个地区258个样点的主要花卉上的蓟马种类进行了分析。【结果】山东省主要花卉上发生的蓟马有11种,包括花蓟马、黄胸蓟马、黄蓟马、西花蓟马、棕榈蓟马、烟蓟马、禾花蓟马、横纹蓟马、腹小头蓟马、黑白纹蓟马、油加律带蓟马等,其优势种为花蓟马。外来入侵害虫西花蓟马在山东省18个地区的花卉上被发现。其中,荣成市区发生最重,占蓟马采集总量的51．86％;德州市区和青岛市区发生次之,分别占蓟马采集总量的34．21％和33．88％;其他地区西花蓟马发生量占采集总量的1．39％～18．75％。【结论与意义】西花蓟马已在山东省定殖并广泛分布,相关部门应做好西花蓟马的预防与控制工作。     

中国齿蓟马属－新种记述（缨翅目：蓟马科）

中国齿蓟马属－新种记述（缨翅目：蓟马科）冯纪年,赵小蓉（西北农业大学昆虫研究所,陕西省杨陵区７１２１００）关键词缨翅目,蓟马科,齿蓟马属,新种,分类学,中国齿蓟马属ＯｄｏｎｔｏｔｈｒｉｐｓＳｅｒｖｉｌｌｅ１９１９全世界曾记录２５种,我国有分布记录的仅...     

温度对西花蓟马(Frankliniella occidentalis)生长发育和存活率的影响

在15、20、25℃和30℃,RH75％的条件下,分析了温度与西花蓟马发育速率的关系,并测定了西花蓟马的发育起点温度、有效积温和存活率。结果表明：在15～30℃范围内,西花蓟马各虫期的发育速率随温度的升高而加快;用直接最优法对发育起点温度和有效积温进行估算,求得西花蓟马的卵、若虫、预蛹和伪蛹及世代发育起点温度分别为5．70、7．04、4．49、6．84℃和6．23℃;世代的有效积温为219．73d·℃。西花蓟马的世代存活率在25℃时最高,为40．12％;30℃时西花蓟马的存活率最低,为17．80％。     

应用实验种群生命表评价巴氏新小绥螨对西花蓟马的控制能力

以西花蓟马Frankliniella occidentalis（Pergande）（Thysanoptera,Thripidae）一龄若虫为猎物组建巴氏新小绥螨Neoseiulus barkeri（Hughes）（Acari：Phytoseiidae）实验种群生命表,获得净生殖力Ro=27．37,世代平均历期T=22．17天,内禀增长率rm=0．15,周限增长率λ=1．16,种群倍增所需时间t=4．64天等参数。将获得参数值与西花蓟马的相关参数值进行比较,巴氏新小绥螨瞬间增长率大于西花蓟马的瞬间增长率（0．14）,雌成螨日取食7～12头西花蓟马一龄若虫,表明巴氏新小绥螨可以作为控制西花蓟马种群数量的有效天敌。     

中国梳蓟马属一新种记述（缨翅目：蓟马科）

记述中国蓟马亚科1新种：太白山梳蓟马Ctenothrips taibaishanensis,sp．nov．,模式标本保存在西北农林科技大学昆虫博物馆。     

中国率管蓟马属一新种记述(缨翅目:管蓟马科)

记述中国率管蓟马属1新种——海南率管蓟马Litotetothrips hainanensis,sp．nov．。模式标本保存于西北农林科技大学昆虫博物馆(NWSUAF)。     

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.