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Cellulase

纤维素酶

公司名称: SERVA Electrophoresis
产品编号: 16419
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Cytohistological Analyses of Mega-sporogenesis and Gametogenesis in Ovules of Limonium spp.
Author:
Date:
2016-11-05
[Abstract]  Limonium spp. are known to have sexual and apomixis (asexual reproduction through seeds) reproductive modes. Here, we present dissection protocol developed for ovules of Limonium spp. using differential interference contrast (DIC) microscopy. This protocol permits better handling of ovules and offers certain advantages over earlier techniques particularly in larger ovules. This method also enables observation of meiosis and embryo sac development in intact ovules, and the ready detection of events distinguishing sexual and apomictic development. [摘要]   Limonium 已知有性和无融合生殖(通过种子的无性繁殖)繁殖模式。在这里,我们提出解剖协议为胚珠的发芽。使用微分干涉对比(DIC)显微镜。该协议允许更好地处理胚珠,并提供优于早期技术,特别是在较大胚珠的某些优势。这种方法还能够观察到完整胚珠中的减数分裂和胚囊发育,以及容易检测到区别性和无序性发育的事件。

[背景] 发生在胚珠发育期间,有必要细胞学检查胚珠。这项研究可以涉及显微镜观察石蜡或树脂包埋,切片材料或清除的器官。在D'Amato(1940; 1949)的先驱作品中公开了对性和无融合生殖物种中胚珠和胚囊发育的第一次细胞学研究。在这些作品中,花使用Karpechenko的方法固定,包埋在石蜡中,切片并用Heidenhain的铁苏木精染色,其染色质和染色体在细胞核中染色。使用这些方法的花芽切片可导致由于单个细胞的部分破坏结构完整性而具有差质量的制备物。更容易的选择是清除福尔马林:乙酸:乙醇固定的器官并用纯的Mayer's hemalum染色(Wallis,1957; Stelly等人,1984)。这种技术需要少得多的时间和劳动,特别是对于通常在卵巢中形成小胚珠的物种,这是 Limonium ...

Protein Degradation Assays in Arabidopsis Protoplasts
Author:
Date:
2015-02-20
[Abstract]  Plant transformation and exogenous protein expression is essential for molecular biology and biotechnology. Current approaches of stable plant transformation might be problematic and very time-consuming. Because of this, transient expression in protoplasts has become valuable alternative, being less cost and time-effective at the same time. Excellent for eukaryotic proteins, representing a natural cell habitat, protoplast isolation is widely used in protein interaction visualization techniques, like BiFC (Bimolecular fluorescence complementation) and FRET (Förster resonance energy transfer). ... [摘要]  植物转化和外源蛋白质表达是分子生物学和生物技术的必要条件。 目前稳定植物转化的方法可能有问题且非常耗时。 因此,在原生质体中的瞬时表达已经成为有价值的替代方案,同时成本更低和时间有效。 优异的真核蛋白,代表天然细胞栖息地,原生质体分离广泛应用于蛋白质相互作用可视化技术,如BiFC(双分子荧光互补)和FRET(弗尔斯特共振能量转移)。 在本协议中,我们提出了在蛋白质降解测定中使用拟南芥原生质体,证明其作为蛋白质组学工具的高度通用性。

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