查询词典 Arabidopsis

Research in Arabidopsis showed overexpression of A, B and E class genes caused the formation of petaloid leaves, suggested a general mechanism that might be found in other petaloid structures in plants.

有趣的是，Pelaz在2001年证明，阿拉伯芥中的A、B及E 群的基因过量表现可以造成叶子瓣化的现象，提供了一个植物类花瓣形成的可能调控机制。

The recent advances in the studies of phototropism are reviewed in this paper:more and more evidences support Bruinsma-Hasagawa hypothesis that tissues within the plant are affected by the Pfr gradient and express growth redistribution; Fluence-response studies of phototropism indicate that fPIPP and TDP are general types of multiple response types of phototropism; several photoreceptors involving phototropism have been characterized; four genetic loci affecting phototropism have been identified by mutants of Arabidopsis thaliana .

本文综述近年来植物向光反应研究方面的进展：（1）植物内部组织感受Pfr梯度引起生长再分布，越来越多的证据支持Bruinsma-Hasagawa假说；（2）光强-反应曲线的研究表明，向光反应存在多种反应类型，其中第一次正向光弯曲和第二次正向光弯曲最为普遍；（3）已鉴定了几种参与向光反应的光受体；（4）通过拟南芥突变体的研究确定了影响向光反应的4个基因。

Protease treatment of the plasma membranes could abolish the binding but NaIO_4 and glycosidase could not, indicating that nsLTP144 bound to plasma membranes protein without carbohydrate moiety. Using the homobifunctional cross-linking regent bissuberate (BS~3) and rice plasma membranes incubated with ~(125)I-Trx-nsLTP144, we identified, after SDS-polyacrylamide gel electrophoresis and autoradiography, a putative protein receptor on the rice plasma membranes with the molecular mass around 60 kDa. NsLTP144 can not trigger extracelluar alkalization in arabidopsis, but can abolish the extracellular alkalization effect of phytopathogen elicitor cryptogein, suggesting that cryptogein and nsLTP144 may bind to the same membrane protein. In vitro pull-down assay showed that nsLTP144 interacted with OsCaM1, a possible extracellular calmodulin, implying that nsLTP144 and OsCaM1 could function in the same signal transduction pathway. These results shed light on revealing the roles of nsLTP in vivo and make it promising to finally characterize the plasma membranes receptor of nsLTP.

发现~(125)I-Trx-nsLTP144、~(125)I-Trx-nsLTP110与水稻细胞质膜均具有特异性结合，而且结合是饱和性的、可被竞争的，符合配体-受体结合的典型特征，同时用于对照实验的蛋白质~(125)I-Thioredoxin没有此特性，表明水稻细胞质膜上存在nsLTP的受体；利用可氧化糖基的NaIO_4和水解糖基的N\'-糖苷酶F处理水稻细胞质膜，再进行结合实验，结合活性几乎不受影响；而利用胰蛋白酶处理细胞膜则使得结合能力几乎完全丧失，表明其受体为没有经过糖基化修饰的蛋白质；利用交联剂BS~3交联配体一受体后，再进行SDS-PAGE分离和放射自显影，结果显示水稻细胞质膜上的nsLTP受体中有一个60kDa的蛋白质可以与nsLTP144发生特异性的结合，可能是其受体；细胞外碱化实验表明，nsLTP144不能促使拟南芥原生质体细胞培养液的细胞外碱化反应，却能猝灭来自植物病原菌的激发子Cryptogein刺激拟南芥原生质体产生的细胞外碱化反应，表明nsLTP和Cryptogein结合细胞膜上相同的位点，保护了植物细胞免受Cryptogein导致的细胞程序性死亡，并诱导系统获得性抗性的产生；体外Pull-down实验表明，nsLTP144和水稻的OsCaM1具有相互作用，暗示了nsLTP144和OsCaM1可能同在一个信号通路上起作用。

Consequently RNA interference was observed is eukaryotic organisms including fungi, Arabidopsis,C. elegans, trypanosomes, hydra, planaria, Drosophila, zabrafish, and mouse.

到目前为止在真菌、拟南芥、线虫、锥虫、水螅、涡虫、果蝇、斑马鱼、小鼠等真核生物中都发现存在这一基因沉默机制。

These results help to elucidate the pleiotropic functions of ASK1 in Arabidopsis developmental processes and also demonstrate the importance and necessity of studying protein levels with respect to gene functions.

对于分离出来的候选蛋白将有助于我们进一步认识和了解拟南芥发育过程中ASK1基因所起的作用，以及从蛋白质水平研究ASK1功能的重要性。

Two patterns of Arabidopsis pollen tube oscillatory growth were detected by using this device.

观察发现，体外生长的拟南芥花粉管存在两种振荡生长方式。

In this study, we isolated the 1058 bp promoter region of the rhamnose synthase gene AtRHM1 from Arabidopsis genome by PCR, and created a series of deletions of AtRHM1 promoter ranging from -931 bp to +127 bp.

本实验从拟南芥基因组中分离了鼠李糖合成酶基因AtRHM1 1058 bp的启动子序列并对启动子5￠端进行了不同长度的缺失。

Exogenous UDP-rhamnose, not free rhamnose, produced a similar effect when it was included in MS media for Arabidopsis culture.

MS培养基中添加UDP-鼠李糖能够回复突变体uer1-1的表型，而鼠李糖则不能。

For elicitation, 20 ml of 5-d-old Arabidopsis cell cultures were transferred to a 100 ml beaker and agitated on a rotating platform at 180 rpm.

为启发， 20毫升5日龄拟南芥细胞培养液被转移到一个100毫升的烧杯和搅拌在旋转平台在180 rpm 。

Until now, the research about phytochelatins synthase genes only focuses on two heavy metal sensitive plant: Arabidopsis thaliana and Triticum aestivum.

迄今为止，关于植物络合素合酶基因的研究主要集中在两种非重金属的植物中：拟南芥与小麦。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐