栗透翅蛾的初步观察

栗透翅蛾Aegeria molybdoceps Hampson属鳞翅目透翅蛾科,又称赤腰透翅蛾。在沂蒙山区普遍发生,是板栗树上的一大重要害虫。 一、形态特征 成虫 形似黄蜂,体长15—21毫米,翅展37—42毫米。翅透明,翅脉及缘毛褐色。触角两端尖细,基半部桔黄色,端半部赤褐色,顶端具一毛束。头部、中胸背板及腹部一、四、五节皆具桔黄色带(雄蛾第四、五节色暗),第二、三     

单环透翅蛾生物学的初步研究

天津市某些园林中西府海棠Malus spectabilis Borkh.var.riversii Nash.的枝干遭受一种透翅蛾幼虫严重危害。鉴定为单环透翅蛾Synathedon unocingulata Bartel.自我国主要苹果产地辽宁旅大、锦州,河北昌黎等苹果园索取的当地危害苹果树干,称为“苹果透翅娥Conopia hector Butler”的标本,并非苹果透翅蛾,而是单环透翅蛾。这说明单环透翅蛾危害苹果树,是一种比较重要的经济害虫。     

杨大透翅蛾习性观察及防治试验

杨大透翅蛾(Aegeria apiformis Cl.)属鳞翅目、透翅蛾科。是陕西省榆林地区危害杨树极为严重的一种蛀干害虫。为了掌握其发生规律,迅速解决防治问题,近年来我们调查了它的危害情况,定位观察了生活习性,并进行了防治试验。现将初步研究结果报告于下。     

醋栗透翅蛾的发生及其防治

<正> 醋栗透翅蛾Synanthedon tipuliformis(Clerck)属鳞翅目透翅蛾科,是目前黑龙江省黑穗醋栗的重要新害虫。其幼虫为害新梢和多年生枝条。一般老栽培区重于新栽培区,枝条受害率达20～50％。1986年作者对其发生及防治进行了较为系统的研究,现将结果整理于下。     

瓜蒌透翅蛾的初步研究

<正> 瓜蒌透翅蛾俗称粗腿透翅蛾Melittia bom-byliformis Cramer属鳞翅目、透翅蛾科。是药用植物瓜篓Trichosanthes kirilowii Maxim.和双边瓜萎T.uniflora Hao的重要害虫。为此,从1978年9月开始,我们对其生活史及其发生规律进行了系统观察,现简要介绍如下: 一、形态特征 成虫 体长雌20—22毫米,雄18—20毫米,翅展雌38毫米,雄36毫米。头部暗褐色,混杂有黄毛,复眼的前缘有黄白色毛,触角球杆形,末端有钩,并具有一毛束,口喙发达。后足生有丛毛这是此种显著的特点。翅透明、翅脉、翅缘、前翅的横脉附近及翅顶部黑色,并翅面散     

葡萄透翅蛾的危害及防治

葡萄透翅蛾的危害及防治严根远（河南省信阳县东双河综合高中４６４１３６）危害葡萄的昆虫有葡萄透翅蛾、葡萄羽绒、葡萄天蛾、葡萄斑蛾、葡萄叶螟、葡萄十星叶甲、烟蓟马等数十种。其中,以葡萄透翅蛾的幼虫对葡萄的生长发育、开花结果等生理危害最严重,防治最难。我校...     

隐翅祝蛾属的订正(鳞翅目:祝蛾科)(英)

隐翅祝蛾属Opacoptera是由Gozmány1978年建立的一个单型属。他当时仅根据采自中国云南的唯一的正模标本♂记述属征,无雌性外生殖器特征。本文对该属的属征进行补充和修正,记述了1新亚属,黄隐翅祝蛾亚属Fulvitalia,及1新种,川隐翅祝蛾O. (O. )ecblasta。并再次记述了模式种,隐翅祝蛾O. (O. )callirrhabda的前翅花纹及雌性外生殖器特征。文中有本属已知全部3种的分种检索表及雌雄外生殖器解剖图。模式标本保存在中国科学院动物研究所。     

中国弧翅卷蛾属研究及新种记述(鳞翅目:卷蛾科)

弧翅卷蛾属(Croesia H?bner,1758)是卷蛾科(Tortricidae),卷蛾族(Tortricini)中的一个较小的属。全世界已知27种,其中除分布在北美3种,欧洲1种外,其余23种都分布在亚洲。它们当中有9种在我国有分布记录。 根据作者收集到的国内标本加以整理,鉴定出已知9种中的6种,另外发现5个新种(长度单位为毫米),总计我国弧翅卷蛾属种类已达14种。它们是:     

葡萄透翅蛾研究初报

<正> 葡萄透翅蛾Parathrene regalis Butler亦称葡萄透羽蛾,主要为害各种葡萄,偶尔为害蛇葡萄Ampelopsis brevipedunculata(Maxim.)Tra-utv.。近年来,随着葡萄种植量的增加及感虫品     

中国波翅青尺蛾属分类研究(鳞翅目:尺蛾科:尺蛾亚科)

波翅青尺蛾属Thalera世界共记录6种和5亚种。中国已知3种和3亚种,本文记述5种和3亚种,其中包括采自四川巴塘1新种淡波翅青尺蛾Thalera simpliria sp.nov.和1新纪录种。文中给出了中国波翅青尺蛾属分种检索表和新种的成虫及外生殖器图。淡波翅青尺蛾,新种Thalera simpliria sp.nov.(图2,3,6,7）新种与Th.lacerataria Graeser,1889相似,但有以下不同：新种前翅外缘在M1与M3之间的缺刻极浅;前后翅外线较圆滑：♂外生殖器抱器瓣基部的三角形骨化片细尖,囊形突较细,钩形突较短粗;♀外生殖器后阴片有一方形弱骨化区域。     

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.