中国叶刺瘿螨亚科一新属五新种记述(蜱螨亚纲：瘿螨科)

本文记述叶刺瘿螨亚科Phyllocoptinae一新属五新种,文内使用长度单位为μm,模式标本保存在南京农业大学植保系.     

中国林木瘿螨四新种记述(蜱螨亚纲：瘿螨总科)

本文记述瘿螨四个新种：纳瘿螨科Ｎａｌｅｐｅｌｉｄａｅ的五针松针羽瘿螨,瘿螨科Ｅｒｉｏｐｈｙｉ－ｄａｅ的黄连木刺瘿螨和楝五脊瘿螨,以及羽爪瘿螨科Ｄｉｐｔｉｌｏｍｉｏｐｉｄａｅ的复盆子蜡皮瘿螨。文内量度为μｍ。模式标本保存在南京农业大学植保系。１五针松针...     

中国叶刺瘿螨亚科三新种记述(蜱螨亚纲：瘿螨总科)

该文记述叶刺瘿螨亚科(Phyllocoptinae)三新种;绍兴刺瘿螨Aculus shaoxingensis sp. Nov.,苦豆子刺皮瘿螨Aculops alopecuroides sp.nov和垂柳刺皮瘿螨Aculops babylonicae sp.     

Influence of microgravity on ultrastructure and storage reserves in seeds of Brassica rapa L.

Successful plant reproduction under spaceflight conditions has been problematic in the past. During a 122 d opportunity on the Mir space station, full life cycles of Brassica rapa L. were completed in microgravity in a series of three experiments in the Svet greenhouse. Ultrastructural and cytochemical analyses of storage reserves in mature dry seeds produced in these experiments were compared with those of seeds produced during a high-fidelity ground control. Additional analyses were performed on developing Brassica embryos, 15 d post pollination, which were produced during a separate experiment on the Shuttle (STS-87). Seeds produced on Mir had less than 20% of the cotyledon cell number found in seeds harvested from the ground control. Cytochemical localization of storage reserves in mature cotyledons showed that starch was retained in the spaceflight material, whereas protein and lipid were the primary storage reserves in ground control seeds. Protein bodies in mature cotyledons produced in space were 44% smaller than those in the ground control seeds. Fifteen days after pollination, cotyledon cells from mature embryos formed in space had large numbers of starch grains, and protein bodies were absent, while in developing ground control seeds at the same stage, protein bodies had already formed and fewer starch grains were evident. These data suggest that both the late stage of seed development and maturation are changed in Brassica by growth in a microgravity environment. While gravity is not absolutely required for any step in the plant life cycle, seed quality in Brassica is compromised by development in microgravity.     

13C NMR在马利筋族植物C21甾类成分结构研究中的应用

本文介绍了＾１３ＣＮＭＲ在以列筋族植物Ｃ２１甾类成分甙元类型工基的确定、糖的种类、连接顺序的判断等方面的应用。     

应用三元递减法筛选特异性心脏生长相关基因

心脏是由胚胎干细胞特异性分化而来的 ,但其分化的分子生物学机制尚不十分了解 .为建立一种新的筛选特异性心脏相关基因的方法 ,克隆特异性心脏生长相关基因 .从胚胎心、成年心和去胎心的胚胎中提取 m RNA,建立胎心 /成年心和胎心 /胎身两个递减性 c DNA文库 ,通过 DNA芯片和微阵列杂交筛选和克隆 ,建立了三元递减克隆的新方法 .获得了一个全长为 1 0 0 6 bp可编码1 94个氨基酸的新的与心脏生长相关的基因 ,它是 LIM家族的新成员 ,可特异性在心肌细胞表达 ,并可促进心肌细胞的生长 .结果表明 ,三元递减筛选法可以应用于寻找新的组织特异性表达的基因 .并且获得了一个新的与心脏生长相关的新基因 ,它可能在心肌生长和心肌肥厚的发生中发挥重要作用