康平寿的组织培养与快速繁殖

1　植物名称　康平寿 (Haworthiacomptoniana)。2　材料类别　成年康平寿的春生花茎 (其中大部分花蕾已出现 ,但尚未开放 )。供试植株来源于日本カクタヌ专门家联盟。3　培养条件　 ( 1 )启动培养基 :MS + 6 BA 2mg·L- 1 (单位下同 ) +KT 1 +NAA 0 .2 ;( 2 )分化培养基 :MS + 6 BA 1 +KT 1 ;( 3)增殖培养基 :MS +6 BA 0 .5 +KT 0 .5 +NAA 0 .1 ;( 4 )复壮与生根培养基 :1 /2MS +NAA 0 .1。以上培养基均加入 3%蔗糖、0 .7%琼脂 ,pH 5 .8。培养温度为 ( 2 5± 2 )℃ ,光照 8h·d- 1 ,光照度为 2 0 0 0lx。4　生长与分化情况4.1…     

马蹄金的组织培养和植株再生

1　植物名称　马蹄金 (Dichondrarepens)。2　材料类别　下胚轴 (hypocotyl)、子叶 (cotyle don)、叶片 (leaf)和叶柄 (petiole)。3　培养条件　无菌苗培养基 :(1)MS。愈伤组织诱导培养基 :(2 )MS +2 ,4 D 1mg·L- 1(单位下同 ) +NAA 1+6 BA 0 .2 +KT 0 .2 ;(3)MS +2 ,4 D 1+6 BA 0 .2 ;(4 )MS +2 ,4 D 1+KT 0 .2 ;(5 )MS +NAA0 .5 +ZT 0 .2 ;(6 )MS +NAA 0 .5 +6 BA 0 .5 ;(7)MS +2 ,4 D 0 .2 +6 BA 0 .5 ;(8)MS +2 ,4 D 1+6 BA 0 .5 ;(9)MS +2 ,4 D 1+NAA 0 .5 +6 BA 0 .2 +KT 0 .2。愈伤组织分化培…     

杂种鸢尾的组织培养和植株再生

1　植物名称　杂种鸢尾 (Irishybrids)。2　材料类别　茎尖 (stemapex)。3　培养条件　基本培养基为MS培养基。 ( 1 )诱导愈伤组织培养基 :MS + 6 BA 1 .5mg·L- 1 (单位下同 ) +NAA 0 .1 ;( 2 )诱导分化培养基 :MS + 6 BA1 .0 +NAA 0 .5 ;( 3)丛芽增殖培养基 ) :MS + 6 BA1 .0 +KT 2 .0 +NAA 0 .1 ;( 4 )生根培养基 :MS +6 BA 0 .1 +NAA 0 .5。以上培养基均加 0 .7%琼脂、3%蔗糖 ,pH5 .8。培养温度为 ( 2 5± 1 )℃ ,光照度2 0 0 0lx ,光照 1 2h·d- 1 。4　生长与分化情况4.1　愈伤组织的诱导　取生长旺盛、无病虫害的幼小…     

地灵的组织培养及快速繁殖

1　植物名称　地灵 (Stachyssieboldii)。2　材料类别　根状茎。3　培养条件　起始培养基 :1 /2MS ,不添加任何激素。诱导愈伤组织培养基 :( 1 )MS + 6 BA 1 .2mg·L- 1 (单位下同 ) +NAA 0 .6;( 2 )MS + 6 BA 1 .8+NAA 0 .6;( 3)MS + 6 BA 2 .4+NAA 0 .6;( 4 )MS+ 6 BA 3+NAA 0 .2 ;( 5 )MS + 6 BA 2 +NAA 0 .1 ;( 6)MS + 6 BA 2 .5 +NAA 0 .1。诱芽培养基 :( 7)MS + 6 BA 2 +KT 0 .1 +NAA 0 .1。增殖培养基 :( 8)MS + 6 BA 2 +NAA 0 .2。诱导愈伤组织和芽的培养基均添加 4%蔗糖 ,增殖培养基添加 3%蔗糖 ,琼脂 0 …     

土人参茎尖培养和植株再生

1　植物名称　土人参 (Talinumpaniculatum)。2　材料类别　实生苗之茎尖 ,种子取自本校花圃。3　培养条件　种子萌发培养基 :( 1 ) 1 /2MS +0 .7%琼脂 + 2 %蔗糖。丛生芽诱导培养基 :( 2 )MS + 6 BA 0 .5mg·L- 1 (单位下同 ) ;( 3)MS +NAA0 .5 + 6 BA 2 .0 ;( 4 )MS +NAA 0 .5 +KT 2 .0 ;( 5 )MS+NAA 0 .5 + 6 BA 3.0。丛生芽增殖培养基 :( 6)MS + 6 BA 2 .0 ;( 7)MS +NAA 0 .0 5 + 6 BA 3.0。生根培养基 :( 8) 1 /2MS +NAA 2 .0。上述 ( 2 )～ ( 8)培养基均附加 30 g·L- 1 蔗糖、7g·L- 1 琼脂 ,pH 5 .8。培养室温…     

紫背天葵的组织培养和快速繁殖

1　植物名称　紫背天葵 (Gynurabicolor)。2　材料类别　具芽点的茎段。3　培养条件　基本培养基为MS。芽诱导培养基 :( 1 )MS + 6 BA 1 .5mg·L- 1 (单位下同 ) +NAA0 .1 ;( 2 )MS + 6 BA 2 +NAA 0 .1 +KT 1 ;( 3)MS+ 6 BA 1 .5 +NAA 0 .1 +GA 1。增殖培养基 :( 4 )MS + 6 BA 3+NAA 0 .1 +GA 1。生根培养基 :( 5 )1 /2MS +IBA 0 .5 ;( 6) 1 /2MS +NAA 0 .5 ;( 7)1 /2MS +IBA 0 .5 +NAA 0 .1。上述培养基均含蔗糖 30 g·L- 1 、0 .75 %琼脂 ,pH 5 .8。培养温度为2 3～2 7℃ ,光照度 1 2 0 0～ 1 40 0lx ,光照 1 4h…     

香叶天竺葵的组织培养和快速繁殖

1　植物名称　香叶天竺葵 (Pelargonium grave olens)。2　材料类别　无菌萌发的种子苗。3　培养条件　种子萌发培养基 :( 1 )MS。分化培养基 :( 2 )MS + 6 BA 0 .5mg·L- 1 (单位下同 ) ;( 3)MS + 6 BA 0 .5 +NAA 0 .1 ;( 4 )MS + 6 BA 1 .0 ;( 5 )MS + 6 BA 1 .0 +NAA 0 .1。壮苗培养基 :( 6)MS + 6 BA 0 .5 +GA 1 .0。生根培养基 :( 7)1 /2MS +IBA 1 .0 ;( 8) 1 /2MS +IBA 0 .5 +NAA0 .1 ;( 9) 1 /2MS +IBA 0 .2 5。以上除生根培养基外均加入蔗糖 30 g·L- 1 ,生根培养基加蔗糖 1 0 g·L- 1 ,琼脂 6g·L- 1 ,pH 5 …     

山椒的组织培养与快速繁殖

1　植物名称　山椒 (Zanthoxylyumpiperitum)。2　材料类别　带腋芽的嫩茎 (tenderstemwithbuds)。3　培养条件　诱导分化培养基 :( 1 )MS + 6 BA2 .0mg·L- 1 (单位下同 ) +NAA 0 .1。增殖培养基 :( 2 )MS + 6 BA 1 .0 +NAA 0 .1 +谷氨酰胺 ( glu tamine) 1 0 0 ;( 3)MS + 6 BA 0 .5 +NAA 0 .0 5 +IBA0 .0 5 +谷氨酰胺 1 0 0。壮苗培养基 :( 4 )MS。上述培养基均含 3%蔗糖 (canesugar)、0 .8%琼脂 (a gar) ,pH 5 .8。生根培养基 :( 5 ) 1 / 4MS(大量元素1 / 4) +IAAl.0 +KT 0 .0 1 ;( 6)l/ 4MS +IBA 2 .0。培养基 ( 5 )和…     

海州蒿组织培养和植株再生

1　植物名称　海州蒿 (Artemisiafauriei)。2　材料类别　茎尖。3　培养条件　愈伤组织诱导培养基 :(1)MS +6 BA1mg·L- 1(单位下同 ) +NAA 1;(2 )MS +6 BA 1+NAA 0 .5 ;(3)MS +6 BA 2 +NAA 0 .5。芽分化培养基 :(4 )MS +6 BA 1;(5 )MS +6 BA 2 ;(6 )MS +6 BA 5 +NAA 0 .1;(7)MS +6 BA 2 +NAA 0 .0 1。生根培养基 :(8) 1/2MS ;(9) 1/2MS +NAA 0 .1;(10 )MS。以上培养基中的蔗糖含量除生根培养基 (8)～(10 )为 2 0 g·L- 1外 ,其余均为 30 g·L- 1。pH 5 .8～6 .0。培养温度 (2 5± 1)℃ ,光照时间 14h·d- 1,…     

北海道黄杨树的组织培养

1　植物名称　北海道黄杨树 (Euonymusjaponicuscv.Zhuzi) [1 ] 。2　材料类别　成年植株带腋芽的茎段 (caulineseg ment)。3　培养条件　培养基有 :( 1 )MS +NAA 0 .2mg·L- 1 (单位下同 ) + 6 BA 2 .0 ;( 2 )MS +NAA 0 .1 + 6 BA 1 .0 ;( 3)MS +NAA 0 .0 5 + 6 BA 0 .5 ;( 4 )MS +NAA 0 .1 + 6 BA 0 .5 ;( 5 )MS +NAA 0 .1 + 6 BA 1 .0 ;( 6) 1 /2MS +NAA 0 .5 + 6 BA 0 .1。以上培养基含 3%蔗糖、0 .8%琼脂 ,pH 5 .8。培养温度为 ( 2 1±3)℃ ,光照度为 1 5 0 0lx ,光照时间为 1 2h·d- 1 。4　生长与分化情况4.1　无…     

Embryo and Endosperm Function and Failure inSolanumSpecies and Hybrids

Although the importance of the endosperm as a food store inmany angiosperm seeds is well known, its significance duringearly embryogenesis has been neglected. In many interspecifichybrids, and in some other situations, embryos do not developfully and abort. It has often been stated that this is causedby the endosperm failing to conduct sufficient nutrients tothe embryo, but seldom has it been suggested that the endospermactively controls most of the early stages of morphogenesisof the embryo. Information gleaned from a broad survey of theliterature, combined with additional evidence presented here,obtained fromSolanum incanumand interspecific hybrids, indicatethat the endosperm is dynamic and very active in regulatingearly embryo development. This requires highly integrated geneticcontrol of rapidly changing metabolism in the endosperm. Ininterspecific hybrids, lack of coordination may cause unbalancedproduction of growth regulating substances by the endospermand hence abortion of the embryo, or even unregulated productionof nucleases and proteases resulting firstly in autolysis ofthe endosperm and then digestion of the embryo. The endospermmay thus serve to detect inappropriate hybridization of speciesor ploidy levels and so prevent waste of resources by producingseeds that would result in sterile hybrids or unthrifty subsequentgenerations. This discriminatory function of the endosperm hasdiminished during evolution and domestication of the crop plantSolanummelongenaL.Copyright 1998 Annals of Botany Company Solanum, embryo morphogenesis, endosperm, hybrid, seed development.     

环腺苷酸应答元件结合蛋白与学习记忆

环腺苷酸(cAMP)应答元件结合蛋白(cAMP response element binding protein,CREB)是一种核转录因子,可与cAMP反应元件结合,调节基因转录,具有调节精子生成,昼夜节律,学习记忆等功能.近年来关于其在学习记忆中的作用成为医学研究热点.CREB是神经元内多条信息传递途径的汇聚点,参与长时记忆形成和突触可塑性.长时记忆(long-term memory)形成需依赖CREB介导的基因转录,干扰或抑制CREB活性可破坏长时记忆.长时程增强(long-term potentiation,LTP)是研究学习记忆的理想模型,在LTP诱导和维持过程中均可观察到CREB活性持续升高.但增龄过程中,海马CREB活性下降,影响学习记忆功能,与许多神经退行性疾病发生有关.     

HIFs and tumors--causes and consequences

For most organisms oxygen is essential fo life. When oxygen levels drop below those required to maintain the minimum physiological oxygen requirement of an organism or tissue it is termed hypoxia. To counter act possible deleterious effects of such a state, an immediate molecular response is initiated causing adaptation responses aimed at cell survival. This response is mediated by the hypoxia-inducible factor-1 (HIF-1), which is a heterodimer consisting of an alpha- and a beta-subunit. HIF-1 alpha protein is stabilized under hypoxic conditions and therefore confers selectivity to this response. Hypoxia is characteristic of tumors, mainly because of impaired blood supply resulting from abnormal growth. Over the past few years enormous progress has been made in the attempt to understand how the activation of the physiological response to hypoxia influences neoplastic growth. In this review some aspects of HIF-1 pathway activation in tumors and the consequences for pathophysiology and treatment of neoplasia are discussed.     

Pragmatic Women and Body Politics and Maternities and Modernities: Colonial and Postcolonial Experiences in Asia and the Pacific

Pragmatic Women and Body Politics. Margaret Lock and Patricia A. Kaufert. eds. Cambridge, UK: Cambridge University Press, 1998. xii +364 pp.
Maternities and Modernities: Colonial and Postcolonial Experiences in Asia and the Pacific. Kalpana Ram and Margaret Jolly. eds. Cambridge, UK: Cambridge University Press, 1998. xiv. 305 pp.