异细胞质信息八倍体小偃麦（Trititrigia 8x）的选育及其性状与细胞遗传

本实验用普通小麦“中国春”和八种异细胞质“中国春”（Ａｅｇｉｌｏｐｓ ｖａｖｉｌｏｖｉｉ）ＣＳ,（Ａｅ．ｊｕｖｅｎａｌｉｓ）ＣＳ,（Ａｅ．ｃｒａｓｓａ）ＣＳ,（Ａｅ．ｃｏｍｏｓａ）ＣＳ,（Ａｅ．ｕｎｉａｒｉｓｔａｔａ）ＣＳ,（Ａｅ．ｓｐｅｌｔｏｉｄｅｓ．Ｍ．）ＣＳ,（Ａｅ．ｋｏｔｓｃｈｙｉ）ＣＳ．（Ｔ．ｔｉｍｏｐｈｅｅｖｉ）ＣＳ分别与八倍体小偃麦（Ｔｒｉｔｉｔｒｉｇｉａ ８ｘ）“远中２”、“远中４     

异极藻科八个分类单位的分类学问题初探

利用光学显微镜和扫描电镜对东北异极藻科植物３属８个分类单位即：异极藻属２种２变种１变型：细异极藻箭头变处Ｇ．ｓａｂｔｉｌｅ ｖａｒ．ｓａｇｇｉｔａ（Ｓｃｈｕｍ．．）Ｃｌ．Ｋ．,缢缩异极藻头状变种意大利变型Ｇ．ｃｏｎｓｔｒｉｃｔｕｍ ｖａｒ．ｃａｐｉｔａｔｕｍ ｆ．ｉｔａｌｌｉｃａ Ｍａｙｅｒ．,柔弱异极藻Ｇ．ｔｅｎｅｌｌｕｍ Ｋｕｔｚ．,半孔异极藻Ｇ．ｓｅｍｉａｐｅｒｔｕｍ Ｇｒｕｎ．长异极藻延长     

细胞松驰素B促微丝解聚对DNA合成的作用

利用微丝（ｍｉｃｒｏｆｉｌａｍｅｎｔ,ＭＦ）解聚药物细胞松驰素Ｂ（ｃｙｔｏｃｈａｌａｓｉｎＢ,ＣＢ）处理Ｇ_０期小鼠Ｃ_３Ｈ_（１０）Ｔ_（１／２）成纤维细胞,对Ｇ_０至Ｓ期ＤＮＡ合成,胸腺嘧啶核苷激酶（ｔｈｙｍｉｄｉｎｅｋｉｎａｓｅ,ＴＫ）活性、ＴＫ基因表达、钙调素（ｃａｌｍｏｄｕｌｉｎ,ＣａＭ）水平和一些细胞周期早期基因的表达进行了观察,Ｇ_０期细胞经３ｍｇ／ＬＣＢ处理２ｈ,促ＭＦ解聚增强了血清对Ｓ期细胞ＴＫ活性、ＴＫ基因表达和ＤＮＡ合成的刺激作用,并促进细胞提前进入Ｓ期．血清刺激Ｇ_０期细胞进入晚Ｇ_１期和Ｓ期时,ＣａＭ水平明显升高,而ＣＢ预处理则使ＣａＭ含量进一步增加,特别是ＣＢ处理促使Ｓ期ＣａＭ增加向核内转移．ＣＢ处理明显增强血清对ｃ－ｊｕｎ、ｃ－ｆｏｓ和ｃ－ｍｙｃ基因表达的刺激作用,而ＰＫＣ抑制剂Ｈ_７则抑制ＣＢ处理对这些基因转录的刺激作用,说明ＣＢ使Ｇ_０期细胞ＭＦ解聚刺激ｃ－ｊｕｎ、ｃ－ｆｏｓ和ｃ－ｍｙｃ的转录活性与ＰＫＣ的作用有关．结果表明Ｇ_０至Ｓ期早期ＭＦ的重组可促进细胞进入Ｓ期,增强ＤＮＡ合成．     

利用植物他感作用灭螺效果的研究

通过调查有螺滩地林下植被的演变和乌柏（Ｓａｐｉｕｍｓｅｂｉｐｅｒｕｍ）、枫杨（Ｐｔｅｒｏｃａｒｙａｓｔｅｎｏｐｔｅｒａ）等滩地造林树种的灭螺效果发现,鸡矢藤（Ｐａｅｄｅｒｉａｓｃａｎｄｅｎｓ）、水芹（Ｏｅｎａｎｔｈｅｊａｖａｎｉｃａ）的个体数量与钉螺的数量呈正相关关系,Ｘ２分别为１２．８和１１．２（ａ＜０．０２）,而益母草（Ｌｅｏｎｕｒｕｓａｒｔｅｍｉｓｉａ）、问荆（Ｅｑｕｉｓｅｔｕｍａｒｖｅｎｓｅ）、酸模叶蓼（Ｒｕｍｅｘａｃｅｔｏｓａ）、打碗花（Ｃａｌｙｓｔｅｇｉａｈｅｄｅｒａｃｅａ）、紫云英（Ａｓｔｒａｇａｌｕｓｓｉｎｉｃｕｓ）等与钉螺的数量呈负相关关系（ａ＜０．０２）经过一个汛期,枫杨、乌柏叶片使钉螺死亡率从草滩对照的２％升至４３．３％和４４．１％     

延安市150例高粘综合症患者卡森粘度、卡森屈服值与其它指标相关性研究

本文对延安市１５０例男性高血粘滞综合证患者的卡森粘度（ＣａｓｓｏｎＶｉｓｃｏｓｉｔｙ,ＣＶ、ηｃ）、卡森屈服值（Ｃａｓｓｏｎｙｉｅｌｄｓｔｒｅｓｓ,ＣＹ,Ｔｃ）与另外十四项血流变指标的相关性进行了研究,３６例男健康人作对照,以初步观察ＣＶ、ＣＹ的内在规律与临床意义,结果表明病例组ＣＶ与ηａ（２３０Ｓ－１）、ＨＲＶ、ＴＫ、ＩＲ呈正相关（Ｐ＜０．０１或＜０．００５）;ＣＹ与ηａ（２３０Ｓ、４６Ｓ、５．７５ｎ）、ＭＲＶ、ＬＲＶ、ＡＩ呈正相关（Ｐ＜０．０１）与ＥＳＲ负相关;ＣＶ与ηａ（５．７５Ｓ）、ＭＲＶ、ＬＲＶ、ＡＩ、Ｆｉｂ,ＣＹ呈负相关（Ｐ＜０．０１）;对照组例数少,相关性差,待后观察。     

大鹏湾沙头角海域富营养化与赤潮发生的初步研究

报道南海大鹏湾沙头角海域由于工业废水和生活污水的大量流入,使该海域氮、磷和化学需氧量逐年升高,使其富营养化程度值达１．４９７～１１．７７３,因而近年来冬春季节赤潮发生频繁。主要的赤潮生物有夜光藻ＮｏｃｌｉｌｕｃａＳｃｔｕｔｌｌａｍｓ、裸甲藻Ｇｙｍｎｏｄｉｎｉｕｍｓｐ．,中肋骨条藻Ｓｋｅｌｅ－ｔｏｎｅｍａＣｏｓｔａｔｕｍ、海洋原甲藻Ｐｒｏｒｏｃｅｎｔｒｕｍｍｉｃａｎｓ、海链藻Ｔｈａｌｓｓｉｏｓｉｒａｓｐ．和角毛藻Ｃｈａｅｌｏｃｅｒａｓｓｐ．等。由于该海湾是半封闭性海域,因而赤潮发生的强度较大,其数量为２．７×１０￣６～８．４×１０￣４个／ｍ￣３,生物多样性指数为０．１４６～０．２５０．其毒性较大,危害沿岸渔业生产。     

辽宁省灾害区划初探

辽宁省灾害区划初探尹功成,梁文举（辽宁省农业区划研究所,沈阳１１００３１）（中国科学院沈阳应用生态研究所,１１００１５）ＡｎＡｐｐｒｏａｃｈｔｏＣａｌａｍｉｔｙＤｉｖｉｓｉｏｎｉｎｇｏｆＬｉａｏｎｉｎｇＰｒｏｖｉｎｃｅ￥．ＹｉｎＧｏｎｇｃｈｅｎｇ（ＬｉａｏｎｉｎｇＩｎｓｌｉｔｕｔｅｏｆＡｇｒｉ－ｃｕｌｔｕｒａｌＤｉｖｉｓｉｏｎｉｎｇ,Ｓｈｅｎｙａｎｇ１１００３１）,ＬｉａｎｇＷｅｎｊｕ（ＩｎｓｌｉｌｕｔｅｏｆＡｐｐｌｉｅｄＥｃｏｌｏｇｙ,ＡｃａｄｅｍｉａＳｉｎｉｃａ,Ｓｈｅｎｙａｎｇ１１００１５）．ＣｈｉｎｅｓｅＪｏｕｒｎａｌｏｆＥｃｏｌｏｇｙ,１９９３,１２（４）：６１－６５．ＮａｔｕｒａｌｃａｌａｍｉｔｉｅｓｏｃｃｕｒｗｈｅｎｖａｒｉＯｕｓｎａｔｕｒａｌｐｈｅｎｏｍｎａｅｎｄａｎｇｅｒｌｉｆｅ,ｍｉｎｄｓａｎｄｐｒｏｐｅｒｔｉｅｓ,ｂｕｔｓｏｍｅｐｏｔｅｎｔｉａｌｅｎｖｉｒｏｎｍｅｎｔａｌｄｉｓａｓｔｅｒｓｓｕｃｈａｓｒｎａｎ－ｍａｄｅａｎｄａｎｔｈｒｏｐｏｇｅｎｏｕｓｎａｔｕｒａｌｄｉｓａｓｔｅｒｓｄｅｖｅｌｏｐｓｌｏｗ－ｌｙａｎｄｐｒｏｆｏｕｎｄｌｙ,ｗｈｌｃｈａｒｅｕｎｏｂｖｉｏｕｓａｎｄｎｏｔｒ     

中国五加科Song木属一些分类群的订正

在全面修订五加科Ｓｏｎｇ木属的基础上,对中国木几个问题的种,即Ａ．ｃｈｉｍｅｎｓｉｓ Ｌ．,Ａ．ｄｅｃａ８ｉｓｎｅａｎａ Ｈａｎｃｅ,Ａ．ｅｌａｔａ（Ｍｉｑ．）Ｓｅｅｍ．,Ａ．ｓｔｉｐｕｌａｔａ Ｆｒａｎｃｈ．,Ａ．ｄａｓｙｐｈｙｌｌｏｉｄｅａ Ｊ．Ｗｅｎ,Ａ．ｔｈｏｍｓｏｎｉｉ Ｓｅｅｎ．ｅｘ Ｃｌａｒｋｅ．Ａ．ｖｉｅｔｎａｍｅｎｓｉｓ Ｈａ,Ａ．ｆｏｌｉｌｏｓａ（Ｗａｌｌ．）Ｓｅｅｍ．,Ａ．ａ     

福建中亚热带村级农业生态经济类型的成因与发展机制研究

福建中亚热带村级农业生态经济类型的成因与发展机制研究林文雄,吴志强,林群慧,郑世庆,王松良,梁义元（福建农学院,福州３５０００２）ＣｏｎｔｒｉｂｕｔｉｎｇＦａｃｔｏｒａｎｄＤｅｖｅｌｏｐｍｅｎｔＭｅｃｂａｎｉｓｍｏｆＲｕｒａｌＡｇｒｏ－ｅｃｏｌｏｍｉｃＴｙｐｅｓｉｎＭｉｄ－ｓｕｂｔｒｏｐｉｃａｌＲｅｇｉｏｎｏｆＦｕＪｉａｎＰｒｏｖｉｎｃｅ￥．ＬｉｎＷｅｎｘｉｏｎｇ;ＷｕＺｈｉｑｉａｎｇ;ＬｉｎＱｕｎｈｕｉ;ＺｈｅｎｇＳｈｉｑｉｎｇ;ＷａｎｇＳｏｎｇｌｉａｎｇ;ＬｉａｎｇＹｉｙｕａｎ（ＦｕｊｉａｎＡｇｒｉｃｕｌｔｕｒａｌＣｏｌｌｅｇｅ,Ｆｕｚｈｏｕ３５０００２）．ＣｈｉｎｅｓｅＪｏｕｒｎａｌｏｆＥｃｏｌｏｇｙ,１９９３,１２（２）：６６－６８．Ｕｓｉｎｇｓｙｓｔｅｍａｔｉｃａｎａｌｙｓｉｓｍｅｔｈｏｄｔｈｅａｕｔｈｏｒｓｓｔｕｄｉｅｄｔｈｅｓｔａｔｕｅｃｈａｒａｃｔｅｒｉｓｔｉｃｓａｎｄｔｈｅｉｒｖａｒｉａｔｉｏｎｐａｔ－ｔｅｒｎｓｏｆｒｕｒａｌａｇｒｏ－ｅｃｏｌｏｍｉｃｔｙｐｅｉｎｍｉｄ－ｓｕｂｔｒｏｐｉｃａｌｒｅｇｉｏｎｏｆＦｕｊｉａｎｐｒｏｖｉｎｃｅ．１１ｔａｐｅｓｏｆｓｙｓｔｅｍｓｔｒｕｃｔｕｒｅａｎ     

柞蚕林生物生产力和干物质转化研究

柞蚕林生物生产力和干物质转化研究温达志,杨思河（中国科学院华南植物研究所,广州５１０６５０）（中国科学院沈阳应用生态研究所,１１００１５）姜波（辽宁省蚕业科学研究所,凤城１１８１０１）ＢｉｏｐｒｏｄｕｃｔｉｖｉｔｙａｎｄＤｒｙＭａｔｔｅｒＴｒａｎｓｆｅｒｏｆＴｕｓｓａｈ－ＦｅｅｄｉｎｇＯａｋＦｏｒｅｓｔ￥ＷｅｎＤａｚｈｉ（ＳｏｕｔｈＣｈｉｎａＩｎｓｔｉ－ｔｕｔｅｏｆＢｏｔａｎｙ,ＡｃａｄｅｍｉａＳｉｎｉｃａ,Ｇｕａｎｇｚｈｏｕ５１０６５０）,ＹａｎｇＳｉｈｅ（ＩｎｓｔｉｔｕｔｅｏｆＡｐｐｌｉｅｄＥｃｏｌｏｇｙ,Ａ－ｃａｄｅｍｉａＳｉｎｉｃａ,Ｓｈｅｎｙａｎｇ１１００１５）,ＪｉａｎｇＢｏ（ＩｎｓｔｉｔｕｔｅｏｆＳｅｒｉｃｕｌｔｕｒａｌＳｃｉｅｎｃｅ,Ｆｅｎｇｃｈｅｎｇ,ＬｉａｏｎｉｎｇＰｒｏｖｉｎｃｅ１１３１００）．ＣｈｉｎｅｓｅＪｏｕｒｎａｌｏｆＥｃｏｌｏｇｙ,１９９３,１２（１）：５－１０．ＴｈｅｐｒｅｓｅｎｔｓｔｕｄｙｄｅａｌｓｗｉｔｈｔｈｅｂｉｏｐｒｏｄｕｃｔｉｖｉｔｙａｎｄｄｒｙｍａｔｔｅｒｔｒａｎｓｆｅｒｏｆＣｈｉｎｅｓｅＴｕｓｓａｈ－ｆｅｅｄｉｎｇｏａｋｆｏｒｅｓｔｉｎｈｉｌｌｙａｒｅａｏｆｅ     

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     

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.     

The structure, reproduction and taxonomy of Vidalia and Osmundaria (Rhodophyta, Rhodomelaceae)

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.     

New or rare chromosome counts in Artemisia L. (Asteraceae, Anthemideae) and related genera from Kazakhstan

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.     

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.     

肝癌中HBV和HCV基因和抗原的分布及意义

采用原位分子杂交方法检测HCV RNA及HBV X基因;采用免疫组织化学方法研究HCV核心抗原,非结构区C33c抗原及HBxAg在肝细胞肝癌中的定位及分布.结果表明(1)HCV RNA、HBV X基因在肝细胞肝癌组织检出率分别为40%(55/136)和82%(112/136).HCV RNA定位于癌细胞的胞浆内,阳性细胞呈散在、灶状及弥漫分布三种形式;HBV X基因在肝癌细胞中的分布呈胞浆型、核型及核浆型,阳性细胞也呈上述三种分布形式;(2)HCV C33c抗原、核心抗原在肝细胞肝癌中的阳性率为81%(133/164)及86%(141/164).C33c抗原定位于癌细胞及肝细胞的胞浆内;核心抗原既定位于癌细胞核中,又可定位于胞浆中.C33c抗原阳性细胞以灶状分布为主;而核心抗原阳性细