西藏报春花属(报春花科)一新变种

凤翔报春①新变种Ｐ．ｓｉｎｏｐｌａｎｔａｇｉｎｅａＢａｌｆ．ｆ．ｖａｒ．ｆｅｎｇｘｉａｎｇｉａｎａＷ．Ｌ．Ｚｈｅｎｇ，ｖａｒ．ｎｏｖ．Ａｖａｒ．ｓｉｎｏｐｌａｎｔａｇｉｎｅａｒｅｃｉｄｉｔｆｏｌｉｓｍａｊｏｒｉｂｕｓ，１２～１９ｃｍｌｏｎｇｉｓ，１?..     

大花珍珠菜一新变种

短雄大花珍珠菜新变种图１ＬｙｓｉｍａｃｈｉａｖｉｏｌａｓｃｅｎｓＦｒａｎｃｈ．ｖａｒ．ｂｒｅｖｉｓ－ｔａｍｉｎａＹ．Ｙ．Ｑｉａｎ,ｖａｒ．ｎｏｖ．Ａｖａｒ．ｖｉｏｌａｓｃｅｎｔｉｄｉｆｅｒｔｃａｕｌｅｓｕｐｅｒｎｅｒａｍｉ ｆｉｃａｎｔｉ,ｆｏｌｉｓ...     

西藏毛茛科新分类群

１色季拉毛茛新变种ＲａｎｕｎｃｕｌｕｓｈｉｒｔｅｌｕｓＲｏｙｌｅｖａｒ．ｓｉｇｙｉｌａｉｃｕｓＷ．Ｌ．Ｃｈｅｎｇ,ｖａｒ．ｎｏｖ．Ａｖａｒ．ｈｉｒｔｅｌｏｄｉｆｅｒｔｆｏｌｉｓｂａｓａｌｉｂｕｓｍｉｎｏｒｉｂｕｓ,ｌａｍｉｎｉｓｃ．２．５ｃｍｄｉａｍ...     

离壁壳属一新变种

采自衡山南岳的白粉菌一种新变种,即寄生在壳斗移多脉青冈（Ｑｕｅｒｉｃｕｓ ｍｕｌｔｉｎｅｒｖｉｓ Ｃｈｅｎｇ）上的赖氏离壁壳南岳变种（Ｃｙｓｔｏｔｈｅｃａ ｗｒｉｇｈｔｉｉ Ｂｅｒｋ ＆ Ｃｕｒｔ ｖａｒ．ｎａｎｙｕｅｎｓｉｓｐ Ｊ．Ｌ．Ｚｈｏｕ）。新变种有汉文和拉丁文描述以及建立新变种的讨论。     

赤松一新变种

本文发表赤松一新变种即彰武松Ｐｉｎｕｓ ｄｅｎｓｔｆｌｏｒａ Ｓｉｅｂ．ｅｔ Ｚｕｃｃ．ｖａｒ．ｚｈａｎｇｗｕｅｎｓｉｓ Ｚｈａｎｇ,Ｌｉ ｅｔ Ｙｕａｎ ｖａｒ。ｎｏｖ。     

西藏钝果寄生属（桑寄生科）二新变种

盐井钝果寄生新变种Ｔａｘｉｌｕｓｄｅｌａｖａｙｉ（ＶａｎＴｉｅｇｈ．）ＤａｎｓｅｒｖａｒｙａｎｊｉｎｇｅｎｓｉｓＷ．Ｌ．Ｃｈｅｎｇ,ｖａｒｎｏｖ．Ａｖａｒ．ｄｅｌａｖａｙｏｄｉｆｅｒｔｐｅｄｉｃｅｌｏｂｒｅｖｉ（１５～２ｍｍｌｏｎｇｏ）,ｌｏｂｏ...     

河南山黧豆属和杭子梢属订正

归并了山黧豆属１种和杭子梢属１变种。即将河南香豌豆Ｌａｔｈｙｒｕｓ ｈｅｎａｎｅｎｓｉｓ Ｓ．Ｙ．Ｗａｎｇ作为安徽山黧豆Ｌ．ａｎｈｕｉｅｎｓｉｓ Ｙ．Ｊ．Ｚｈｕ ｅｔ Ｒ．Ｘ．Ｍｅｎｇ的新异名;白花杭子梢Ｃａｍｐｙｌｏｔｒｏｐｉｓ ｍａｃｒｏｃａｒｐａ（Ｂｇｅ．） Ｒｅｈｄ．ｖａｒ．ａｌｂａ Ｓ．Ｙ．Ｗａｎｇ作为杭子梢原变种Ｃ．ｍａｃｒｏｃａｒｐａ （Ｂｇｅ．）Ｒｅｅｈｄ．ｖａｒ．ｍａｃｒｏｃａｒｐａ的新异名。     

安徽省沽油科一新变种

本文报导了安徽省沽油科一新变种：毛省沽油ＳｔａｐｈｙｌｅａｂｕｍａｌｄａＤＣ．ｖａｒ．ｐｕｂｅｓｃｅｎｓＮ．ＬｉｅｔＹ．Ｈ．Ｈｅ,ｖａｒ．ｎｏｖ．     

甘肃高原毛茛－新变种

甘肃产高原毛茛－新变种,兴隆山毛茛Ｒａｎｕｍｃｕｌｕｓｔａｎｇｕｔｉｃｕｓ（Ｍａｘｉｍ．）Ｏｖｃｚ．ｖａｒ．ｘｉｎｇｌｏｎｇｓｈａｎｉｃｕｓＺ．Ｘ．ＰｅｎｇｅｔＹ．Ｊ．ＺｈａｎｇＶａｒ．ｎｏｗ．     

山东植物两新变种

本文发表了山东产植物２种变种,即长行华北锈线菊（Ｓｐｙｒａｅａ ｆｒｉｔｓｃｈｉａｎａ ｖａｒ．ｖｉｌｏｓａ）和多脉鼠李（Ｒｈａｍｎｕｓ ｕｔｉｌｉｓ ｖａｒ．ｍｕｌｔｉｎｅｒｖｙｓ）。     

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