中国瘿螨科四新种记述（蜱螨亚纲：瘿螨总科）

本文记述瘿科４新种：生瘿螨亚科Ｃｅｃｉｄｏｐｈｙｉｎａｅ的竹生瘿螨Ｃｅｃｉｄｏｐｈｙｅｓ ｂａｍｂｕｓａｅ,ｓｐ．ｎｏｖ。瘿螨亚科Ｅｒｏｐｈｙｉｎａｅ的龙眼瘿螨Ｅｒｉｏｐｈｙｅｓ ｄｉｍｏｃａｒ ｐｉ,ｓｐ．ｎｏｖ。鲁迅瘤瘿螨Ａｅｒｉａ ｌｕｘｕｎｉ,ｓｐ。ｎｏｖ。和竹刺子瘿螨Ａｃｕｌｏｄｅｓ ｂａｍｂｕｓａｅ,ｓｐ．ｎｏｖ。模式标本保存在南京农业大学植物保护系。     

叶棘瘿螨亚科三新种记述

本文记述的三个新种,即瓜馥木纺瘿螨Ｖｉｔｔａｃｕｓ ｆｉｓｓｉｓｔｉｇａｅ ｓｐ,ｎｏｖ。隆安刺瘿螨Ａｃｕｌｕｓ ｌｏｇａｎｅｎｓｉｓ ｓｐ,ｎｏｖ、大血藤刺瘿螨Ａｃｕｌｕｓ ｓａｒｇｅｎｔｏｄｏｘａｅ ｓｐ。ｎｏｖ,标本采自广西。     

中国叶刺瘿螨亚科四新种记述(蜱螨亚纲:瘿螨总科)

文内新种为樱花刺皮瘿螨Ａｃｕｌｏｐｓ ｙｉｎｇｈｕａｅ Ｋｕａｎｇ,ｓｐ．ｎｏｖ。,西宁刺皮瘿螨Ａｃｕｌｏｐｓ ｘｉｎｉｎｇｅｎｓｉｓ Ｋｕａｎｇ,ｓｐ．ｎｏｖ．,湟中刺瘿螨Ａｃｕｌｕｓ ｈｕａｎｇｚｈｏｎｇｅｎｓｉｓ Ｋｕａｎｇ,ｓｐ．ｎｏｖ．和白英叶刺瘿螨Ｐｈｙｌｌｏｃｏｐｔｅｓ ｓｏｌａｎｉ Ｋｕａｎｇ,ｓｐ．ｎｏｖ．。     

中国瘿螨科一新属五新种记述（蜱螨亚纲：瘿螨总科）

文内新属为帽瘿螨属Ｍｉｔｒａｔｕｓ Ｋｕａｎｇ,ｇｅｎ．ｎｏｖ．,新种是构帽瘿螨Ｍ．ｂｒｏｕｓｓｏｎｅｔｉａｅ Ｋｕａｎｇ,ｓｐ．ｎｏｖ．,张掖瘿螨Ｅｒｉｏｐｈｙｅｓ ｚｈａｎｇｙｅｅｎｓｉｓ Ｋｕａｎｇ ｅｔ Ｌｕｏ,ｓｐ．ｎｏｖ．,柳刺瘿螨Ａｃｕｌｕｓ ｓａｌｉｃｉｓ Ｋｕａｎｇ ｅｔ Ｌｕｏ,ｓｐ．ｎｏｖ．,拟醋栗花刺瘿螨Ａｎｔｈｏｃｏｐｔｅｓ ｐａｒａｒｉｂｉｓ Ｋｕａｎｇ,ｓｐ．ｎｏｖ．     

中国瘿螨科三新种记述(蜱螨亚纲:瘿螨总科)

记述瘿螨科Ｅｒｉｏｐｈｙｉｄａｅ３新种：瘿螨亚科Ｅｒｉｏｐｈｙｉｄａｅ的相瘤瘿螨Ａｃｅｒｉａ ｃｅｌｔｉｄｉｓ Ｚｈａｏ ｅｔ Ｋｕａｎｇ,ｓｐ．ｎｏｖ．;叶刺瘿螨亚科Ｐｈｙｌｌｏｃｏｐｔｉｎａｅ的无花果中瘿螨Ｓｉｎａｃｕｓ ｃａｒｉｃａｅＺｈａｏ ｅｔ Ｋｕａｎｇ,ｓｐ．ｎｏｖ．和柳顶冠瘿螨Ｔ ｅｇｏｌｏｐｈｕｓ ｓａｌｉｃｉｓ Ｋｕａｎｇ ｅｔ Ｚｈａｏ,ｓｐ．ｎｏｖ．。display structure     

广西瘤瘿螨属四新种记述：蜱螨亚纲：瘿螨科

４个新种是紫薇瘤瘿螨Ａｃｅｒｉａ ｌａｇｅｒｓｔｒｏｅｍｉａｅ Ｋｕａｎｇｅｔ Ｙａｎｇ,ｓｐ．ｎｏｖ．,路边青瘤瘿螨Ａｃｅｒｉａ ｇｅｉ Ｋｕａｎｇ ｅｔＬｕ,ｓｐ．ｎｏｖ．,广西瘤瘿螨Ａｃｅｒｉａ ｇｕａｎｘｉｅｎｓｅ ＫｕａｎｇｅｔＬｕ,ｓｐ．ｎｏｖ．和梧州瘤瘿螨Ａｃｅｒｉａ ｗｕｚｈｏｕｅｎｓｉｓ Ｋｕａｎｇｅｔ Ｙａｎｇ,ｓｐ．ｎｏｖ。     

羽爪瘿螨科三新种记述(蜱螨亚纲:瘿螨总科)

本文记述羽爪瘿螨科三新种：栗蜡皮瘿螨Ａｐｏｄｉｐｔａｃｕｓ ｃａｓｔａｎｅａｅ ｓｐ．ｎｏｖ．,梅双羽爪瘿螨Ｄｉｐｔａｃｕｓ ｍｕｍｅ ｓｐ．ｎｏｖ。,桑大嘴瘿螨Ｒｈｙｎｃａｐｈｙｔｏｐｔｕｓ ｍｏｒｉ ｓｐ．ｎｏｖ．,附有形态特征图。     

中国四瘿螨属二新种记述：蜱螨亚纲：瘿螨总科

本文记述了四瘿螨属Ｔｅｔｒａ２新种：即毛竹四瘿螨ＴｅｔｒａｐｈｙｌｌｏｓｔａｃｈｙｉｓＫｕａｎｇｅｔＺｈａｎｇｓｐ．ｎｏｖ和杨四瘿螨ＴｅｔｒａｐｏｐｕｌｉＫｕａｎｇｓｐ．ｎｏｖ。     

羽爪瘿螨科一新属三新种记述（蜱螨亚纲;真螨目）

记述了羽爪瘿螨科一新属,即新兰瘿螨属Ｎｅｏｌａｍｂｅｌｌａ ｇｅｎ。ｎｏｖ。三新种是女贞新兰瘿螨Ｎｅｏｌａｍｂｅｌｌａ ｌｉｇｕｓｔｒｉ ｓｐ．ｎｏｖ。,麻栎 蜡皮瘿螨Ａｐｏｄｉｐｔａｃｕｓ ａｃｕｔｉｓｓｉｍａｅ ｓｐ．ｎｏｖ。和榆畸刺瘿螨Ａｂａｃｏｐｔｅｓ ｕｌｍｉ ｓｐ．ｎｏｖ。对其形态进行了描述并与近缘种作了比较,模式标本保存在南京农业大学。     

中国针叶树瘿螨一新属三新种记述：（蜱螨亚纲：瘿螨总科）

文内新属为新为瘿螨属Ｎｅｏｅｐｉｔｒｉｍｅｒｕｓ Ｋｕａｎｇ ｅｔ Ｌｉ,ｇｅｎ．ｎｏｖ．,新种是侧柏新上瘿螨Ｎｅｏｅｐｉｔｒｉｍｅｒｕｓ ｐｌａｔｙｃｌａｄｉ Ｋｕａｎｇ ｅｔ Ｌｉ,ｓｐ．ｎｏｖ．、松上瘿螨Ｅｐｉｔｒｉｍｅｒｕｓ ｐｉｎｉ Ｋｕａｎｇ ｅｔ Ｌｉ,ｓｐ．ｎｏｖ．和金钱松博瘿螨Ｂｏｃｚｅｋｅｌｌａ ｐｓｅｕｄｏｌａｒｉｓ Ｋｕａｎｇ ｅｔ Ｓｈｅｎ,ｓｐ．ｎｏｖ．它们分别分布在北     

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.     

Entwicklungsgeschichte und Ultrastruktur von Pollenkitt und Exine bei nahe verwandten entomophilen und anemophilen Angiospermensippen derAlismataceae,Liliaceae, Juncaceae,Cyperaceae, Poaceae undAraceae

Some closely related members of the monocotyledonous familiesAlismataceae, Liliaceae, Juncaceae, Cyperaceae, Poaceae andAraceae with variable modes of pollination (insect- and wind-pollination) were studied in relation to the ultrastructure of pollenkitt and exine (amount, consistency and distribution of pollenkitt on the surface of pollen grains). The character syndromes of pollen cementing in entomophilous, anemophilous and intermediate (ambophilous or amphiphilous) monocotyledons are the same in principal as in dicotyledons. Comparing present with former results one can summarize: 1) The pollenkitt is always produced in the same manner by the anther tapetum in all angiosperm sub-classes. 2) The variable stickiness of entomophilous and anemophilous pollen always depends on the particular distribution and consistency of the pollenkitt, but not its amount on the pollen surface. 3) The mostly dry and powdery pollen of anemophilous plants always contains a variable amount of inactive pollenkitt in its exine cavities. 4) A step-by step change of the pollen cementing syndrome can be observed from entomophily towards anemophily. 5) From the omnipresence of pollenkitt in all wind-pollinated angiosperms studied one can conclude that the ancestors of anemophilous angiosperms probably have been zoophilous (i.e. entomophilous) throughout.

     

Identification and Characterization of the First Equine Parainfluenza Virus 5

正Dear Editor,Parainfluenza virus 5 (PIV5), known as canine parainfluenza virus in the veterinary field, is a negative-sense,nonsegmented, single-stranded RNA virus belonging to the Paramyxoviridae family (Chen 2018). The virus was first reported in primary monkey kidney cells in 1954 (Hsiung1972), then it has been frequently discovered in various