无齿角蝉属四新种记述(同翅目:角蝉科)

本文记述无齿角蝉属ＮｏｎｄｅｎｔｉｃｅｎｔｒｕｓＹｕａｎｅｔＣｈｏｕ４新种,即：秦岭无齿角蝉Ｎ．ｑｉｎｌｉｎｇｅｎｓｉｓ,ｓｐ．ｎｏｖ．,长角无齿角蝉Ｎ．ｌｏｎｇｉｃｏｒｎｉｓ,ｓｐ．ｎｏｖ．,金黄无齿角蝉Ｎ．ａｕｒｅｕｓ,ｓｐ．ｎｏｖ．,和亮斑无齿角蝉Ｎ．ｆｕｌｇｉｐｕｎｃｔａｔｕｓ,ｓｐ．ｎｏｖ．。模式标本保存于西北农业大学昆虫博物馆。     

山东危害槐树的三刺角蝉属一新种：同翅目：角蝉科：露盾角蝉亚科

本文记述在山东省危害槐树ＳｏｐｈｏｒａｊａｐｏｍｉｃａＬｉｎｎａｅｕｓ的三刺角蝉属Ｔｒｉｃｅｎｔｒｕｓ１新种；槐树三刺角蝉Ｔｒｉｃｅｎｔｒｕｓｓｏｐｈｏｒａｅｓｓｐｎｏｖ，其寄主除槐树外，还有龙爪槐Ｓ．ｊａｐｏｎｉｃａｆ．ｐｅｎｄｕｌａＬｏｎｄ．刺槐ＲｏｂｒｉｎｉａｐｓｅｕｄｏａｃａｃｉａＬｉｎｎ，紫穗槐ＡｍｏｒｐｈａｆｒｕｔｉｃｏｓａＬｉｎｎ，模式标本保存于西北农业大学昆虫博物馆。     

三刺角蝉族Tricentrini系统学研究I.三刺角蝉属Tricenlrus中国八新种(同翅目: 角蝉科: 露盾角蝉亚科)

本文讨论了三刺角蝉族ＴｒｉｃｅｎｔｒｉｎｉＡｈｍａｄｅｔＹａｓｍｅｅｎ,１９７４特征及所辖４个属的关系,认为秃角蝉属ＣｅｎｔｒｏｔｏｓｃｅｌｕｓＦｒｎｋｈｏｕｓｅｒ,１９１４为其中一独立属。记述了三刺角蝉属Ｔｒｉｃｅｎｔｒｕｓ中国８个新种：胡颓子三刺角蝉Ｔ．ｅｌａｅａｇｎｉ,茶树三刺角蝉Ｔ．ｃａｍｅｌｉａｅ,马桑三刺角蝉Ｔ．ｃｏｒｉａｒｉａｅ,驼背三刺角蝉Ｔ．ｄｏｒｓｏｃａｍｅｌｏｉｄｅｕｓ,肖融瓣三刺角蝉Ｔ．ｃｏｌｉｇａｔｏｃｌｙｐｅｉｄｅｓ,油茶三刺角蝉Ｔ．ｃａｍｅｌｏｌｅｆｅｒ,半透翅三刺角蝉Ｔ．ｓｅｍｉｐｅｌｕｃｉｄｕｓ,以及铁刀木三刺角蝉Ｔ．ｃａｅｓａｌｐｉｎｉａｅ。它们的共同特征是：额唇基的中、侧瓣融合;雌性第９腹节背板的后上角管状。模式标本均保存于西北农业大学昆虫博物馆     

中国雅角蝉属一新种：同翅目：角蝉科

中国雅角蝉属一新种（同翅目：角蝉科）袁锋,范骁凌（西北农业大学昆虫研究所陕西省杨陵区７１２１００）本文记述了采自云南勐腊、勐养雅角蝉属ＣｅｎｔｒｏｃｈａｒｅｓＳｔｌ１新种。模式标本保存于西北农业大学昆虫博物馆。花翅雅角蝉Ｃｅｎｔｒｏｃｈａｒｅｓｐｏｒ...     

尖三刺角蝉的核型与性二型现象：同翅目：角蝉科

尖三刺角蝉Ｔｈｉｃｅｎｔｒｕｓａｃｕｔｉｃｏｒｎｉｓ的雌雄均只有１０条染色体,性别决定为ＸＹ型,是角蝉科已知最为独特的核型特征,该种具有明显的性二型现象,由于雄性不具有上肩角,极易被误认为是秃角蝉属ＣｅｎｔｒｏｔｏｓｃｅｌｌｕｓＦｕｎｋｈｏｕｓｅｒ的种类。本文根据染色体特征,首次确定了该种的雄性,并对其形态特征进行了描述。     

二刺角蝉属分类地位的讨论及中国种类的记述（同翅目：角蝉科）

二刺角蝉属ＨｅｍｉｃｅｎｔｕｒｓＭｅｌｉｃｈａｒ的分类地位历来有很大的争议,不同的作者往往把该属放在不同的亚科甚至不同的科中。该属全世界已知５种,均分布于东洋区,我国已记载有二种,即：Ｈ．ｃｏｒｎｕｔｕｓＦｕｎｋｈ．和Ｈ．ａｔｅｎｕａｔｕｓＦｕｎｋｈ．。作者研究了保存于西北农业大学昆虫博物馆的二刺角蝉属标本５０余件,鉴定出６种,其中有５新种：宽二刺角蝉Ｈ．ｌａｔｕｓ,褐二刺角蝉Ｈ．ｂｒｕｎｎｅｕｓ,细二刺角蝉Ｈ．ｔｅｎｕｉｓ,短二刺角蝉Ｈ．ｂｒｅｖｉｓ,斜二刺角蝉Ｈ．ｏｂｌｉｑｕｕｓ。并基于详细的形态学、细胞学、幼期形态特征的研究,进一步论证了该属的分类地位,认为应放到角蝉科Ｍｅｍｂｒａｃｉｄａｅ露盾角蝉亚科Ｃｅｎｔｒｏｔｉｎａｅ弧角蝉族Ｌｅｐｔｏｃｅｎｔｒｉｎｉ．。     

三刺角蝉族Tricentrini系统学研究Ⅰ.：三刺角蝉属Tricenlurs中国…

本文讨论了三角蝉族ＴｒｉｃｅｎｔｒｉｎｉＡｈｍａｄｅｔＹａｓｍｅｅｎ,１９７４特征及所辖４个属的关系,认为秃角蝉属ＣｅｎｔｒｏｔｏｓｃｌｕｓＦｒｎｋｈｏｕｓｅｒ,１９１４为其中一独立属。模式标本均保存于西北农业大学昆虫博物馆。     

二刺角蝉属分类地位的讨论及中国种类的记述：同翅目：蝉科科

二刺角蝉属ＨｅｍｉｃｅｎｔｒｕｓＭｅｌｉｃｈａｒ的分类地位历来有很大的争议,不同的作者往往把该属放在不同的亚科甚至不同的科中。该属全世界已知５种,均分布于东洋区,我国已记载有二种即：Ｈ．ｃｏｒｎｕｔｕｓＦｕｎｋｈ．和Ｈ．ａｔｅｎｕａｔｕｓＦｕｎｋｈ．。作者研究了保存于西北农业大学昆虫博物馆的二刺角蝉属标本５０余件,鉴定出６种,其中有５新种：宽二刺角蝉Ｈ．ｌａｔｕｓ,褐二刺角蝉Ｈ．ｂｒｕｎｎｅｕｓ,     

中国角蝉科耳角蝉属一新种(半翅目:角蝉科)

本文记述了中国角蝉科耳角蝉属1新种——未来耳角蝉Maurya dreamonia,sp．nov．模式标本保存于四川大学生命科学学院动物标本馆。 未来耳角蝉Maurya dreamonia Zeng,新种 体中型,体长6．5mm,褐色,肩角间宽2．5mm,上肩角间宽3．2mm。近似于脊顶耳角蝉M．verticicarinalis Yuan,1988和瘤耳角蝉Mparadoxa（Lethierry,1876）,新种最显著特征在于上肩角发达,无弯曲,直伸向外上方：后突起中部更为拱起。与脊顶耳角蝉相比,新种前翅翅脉还具有小瘤结颗粒。 正模：♀,四川卧龙自然保护区（1980m）,2004-Ⅶ-06,曾昱采。     

横脊叶蝉亚科四新种：同翅目：叶蝉科

本文记述采自河南省伏牛铁横脊叶蝉４新种;双突横脊叶蝉Ｅｖａｃａｎｔｈｕｓ ｐｒｏｃｅｒｕｓ Ｃａｉ ｅｔ Ｓｈｅｎ．长突横脊叶蝉Ｅ．ｌｏｎｇｕｓ Ｃａｉ ｅｔ Ｓｈｅｎ,白斑横脊叶蝉Ｅ．ａｌｂｏｍａｃｕｌａｔｕｓ Ｃａｉ ｅｔ Ｓｈｅｎ和双斑角突叶蝉Ｔａｐｅｒｕｓ ｂｉｍａｃｕｌａｔｕｓ Ｃａｉ ｅｔ Ｓｈｅｎ,模式标本保存在安徽农业大学。     

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).