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采自四川西部的二个柄锈菌新种,即寄生在小檗属Berberis sp.上的岷山柄锈菌Puccinia minshanensis J.Y.Zhuang & S.X. Wei和寄生在大箭竹Sinarundinaria chungii(Keng)Keng f.上的箭竹生柄锈菌Puccinia sinarundinariicola J.Y.Zhuang & S.X. Wei。文中对新种进行了拉丁文描述并作了 相似文献
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湘中锡矿山邵东组和孟公坳组共产小孢子45属83种(含10个新种,3个新联合),可划分为4个孢子组合,即:Retisporalepidophyta-Apiculiretusisporafructicosa(LF)组合,Rugosporacf.flexuosa-Retisporalepidophyta(FL)组合,LophozonotriIetesexcisus-Retisporalepidophyta(EL)组合和Crassisporacf.kosankei-Lycosporadenticulata(KD)组合。根据孢子组合的特征,泥盆-石炭系界线置于EL与KD组合之间,即相当于孟公坳组中下部与上部之间。 相似文献
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湘中锡矿山邵东组和孟公坳组孢子组合——兼论泥盆—石炭系界线 总被引:9,自引:1,他引:8
湘中锡矿山邵东组和孟公坳组共产小孢子45属83种(含10个新种,3个新联合)可划分为4个孢子组合,即:Retsiporalepidophyta-Apiculiretusisporafructicosa(LF)组合,Rugosporacf.flexuosa-Retisporalepidophyta(FL)组合,Lophozonotriletesexcisus-Retisporalepidophyta 相似文献
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云南及邻近地区竹亚科增补 总被引:5,自引:1,他引:4
报道了云南竹亚科新记录2种,即冷箭竹和西藏香竹,归并了5个种名,它们是Chimonocalamus tortuosus Hsueh et Yi,Dendrocalamus factitus Yi,Chimonobambusa yunnnensis Hsueh et W.p.Zhang,Chimonobambusa nepourpurea Yi,Ferrocalamus rimosivaginus 相似文献
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对江西修水清水岩乡东岭剖面和乐平沿沟剖面的再研究表明,HindeodusparvusMorphotype1在东岭剖面首现于大冶组的最低层位,生物地层界线与岩石地层界线一致,仅比事件地层界线高5-6cm。沿沟剖面Hindeodusparvus带厚仅36cm,其首现与岩石地层界线也一致。张克信等提出的H.latidentatus→H.parvus→H.turgidus→I.isarcica的演化谱系需作进一步修正。依据华南的资料,本文第一作者提出新的演化谱系:H.latidentatus→H.parvus→I.staeschei→I.isarcica。H.turgidus并不在此演化系列中,它属Hindeodus的另一分枝。二叠三叠系界线层的牙形刺应区分出浮游相与浅水相。在浮游相,牙形刺序列为:(1)ClarkinachangxingensisC.deflecta带,(2)C.carinata带,(3)C.planata带。在浅水相,牙形刺序列为:(1)H.latidentatus带,(2)H.parvus带,(3)I.staeschei带,(4)I.isarcica带,(5)H.postparvus带 相似文献
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本拟定中国美登木属4新种1新等级,它们是:广南美登木M.guangnanensis H.Shao,蒙自美登木M.mengziensis H.Shao,易门 美登木M.yimenensis H.Shao,树状美登木M.arboreus H.Shao和疏刺刺茶M.variabilis(Hemsl.)C.Y.Cheng var.inermis(C.Y.Cheng et W.L.Sha)H.Shao。 相似文献
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枝孢属Cladosporium一新种:桔梗枝孢C.platycodonis Z.Y.Zhang et H.Zhang,sp.nov.二个新记录种是:菝葜枝孢C.smilacis(Schweinitz)Fries和枣枝孢C.蒲寂K新种附有拉丁文描述及形态图,模式标本保存于云南农业大学真菌标本室(MHYAU)。 相似文献
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Profiles of SARS-CoV-2 RNA and Antibodies in Inpatients with COVID-19 not Related with Clinical Manifestation: A Single Centre Study 下载免费PDF全文
Zhao Li Gao Ruqin Lu Roujian Wang Huijuan Deng Yao Niu Peihua Jiang Fachun Huang Baoying Liang Jiwei Jia Jing Zhang Feng Wang Wenling Wu Guizhen Tan Wenjie 《中国病毒学》2021,36(5):1088-1092
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RICHARD E. NORRIS 《Botanical journal of the Linnean Society. Linnean Society of London》1991,106(1):1-40
Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera. 相似文献
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JOAN VALUÈS MONTSERRAT TORRELL NÚRIA GARCIA JACAS 《Botanical journal of the Linnean Society. Linnean Society of London》2001,137(4):399-407
Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted. 相似文献
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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. 相似文献
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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 相似文献