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Gelrite

GELRITE TM

Company: Duchefa Biochemie
Catalog#: G1101
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Protocol to Test the Effect of Sorbitol in vitro on Hybrid Larch (Larix x eurolepis Henry) Emblings
Author:
Date:
2018-07-20
[Abstract]  This protocol presents a method to test the effect of sorbitol in vitro on hybrid larch plants derived from somatic embryogenesis. We have tested four different media variants, one control variant without sorbitol and three variants of decreasing water potential corresponding to sorbitol concentrations in the culture medium of 4%, 10%, and 20%. We cultured two hybrid larch clones on these media during 35 days and assessed their vitality and weight growth after this time. [摘要]  该方案提供了一种测试山梨醇体外对体细胞胚胎发生的杂交落叶松植物的影响的方法。 我们测试了四种不同的培养基变体,一种不含山梨糖醇的对照变体和三种降低水势的变体,对应于培养基中山梨糖醇浓度为4%,10%和20%。 我们在35天内在这些培养基上培养了两个杂交落叶松克隆,并在此之后评估它们的活力和体重增长。

【背景】林木育种可受益于允许在其发育的早期阶段对植物系进行高通量筛选的方法。这些方法有助于界定后期在田间测试的基因型的数量,这是在林木物种需要相当大的空间的情况下的问题。一种可能性是在体外测试幼苗,该过程具有促进均匀和良好控制的实验条件的额外优点。对生物和非生物胁迫因子的耐受性的方面可以例如在体外进行筛选。其中,干旱压力在改善计划中受到特别关注。模拟缺水的常用方法是在根部支持培养基中添加渗透压,从而降低水的可用性。渗透压剂可以是离子型NaCl或非离子型甘露醇,山梨糖醇或PEG(聚乙二醇)(Singh和Singh,2015)。我们已经开发出一种方案,该方案允许测试山梨糖醇在体外对来自体细胞胚胎发生的杂交落叶松嵌入的影响。

Tracking Lipid Transfer by Fatty Acid Isotopolog Profiling from Host Plants to Arbuscular Mycorrhiza Fungi
Author:
Date:
2018-04-05
[Abstract]  Lipid transfer from host plants to arbuscular mycorrhiza fungi was hypothesized for several years because sequenced arbuscular mycorrhiza fungal genomes lack genes encoding cytosolic fatty acid synthase (Wewer et al., 2014; Rich et al., 2017). It was finally shown by two independent experimental approaches (Jiang et al., 2017; Keymer et al., 2017; Luginbuehl et al., 2017). One approach used a technique called isotopolog profiling (Keymer et al., 2017). Isotopologs are molecules, which differ only in their isotopic composition. For isotopolog profiling an organism is fed with a heavy isotope labelled precursor metabolite. Subsequently, the labelled isotopolog composition of metabolic products is analysed via mass spectrometry. The ... [摘要]  因为测序的丛枝菌根真菌基因组缺乏编码胞质脂肪酸合酶的基因(Wewer等人,2014; Rich等人,2014),因此假定脂质从宿主植物转移到丛枝菌根真菌数年。 / em>,2017)。最终通过两种独立的实验方法(Jiang等人,2017; Keymer等人,2017; Luginbuehl等人, ), 2017年)。一种方法使用称为同位素体谱分析的技术(Keymer等人,2017)。同位素体是分子,它们的同位素组成不同。对于同位素生物学分析,生物体被喂以重同位素标记的前体代谢物。随后,通过质谱分析代谢产物的标记同位素组成。检测到的目标代谢物的同位素体模式产生关于代谢途径和通量的信息(Ahmed et al。,2014)。以下协议描述了一个实验装置,该装置能够在由丛枝菌根真菌及其相关真菌胞外菌丝体定植的植物根中分离出脂肪酸的单独同位素分布图,以阐明两种共生生物之间的通量。我们预测,如果两种相互作用的生物体可以物理分离,则该策略还可以用于研究其他生物体之间的代谢物通量。

【背景】丛枝菌根真菌是生物营养生物。因此,它们不能独立栽培,而是依靠与寄主植物的相互作用来维持生命并完成它们的生命周期。这一特征使得研究两种共生生物,特别是单独的真菌具有挑战性。

为了培养,处理和收获与宿主根分开的真菌,开发了2室培养皿系统,并将其用于以前工作中的标记研究(Bécard和Fortin,1988; ...

Infection Assay of Cyst Nematodes on Arabidopsis Roots
Author:
Date:
2015-09-20
[Abstract]  Plant parasitic nematodes are devastating pests on many crops. Juveniles (J2) of cyst nematodes invade the roots to induce a syncytium. This feeding site is their only source of nutrients. Male nematodes leave the roots after the fourth molt to mate with females. The females stay attached to their syncytia throughout their life and produce hundreds of eggs, which are contained in their bodies. When the females die their bodies form the cysts, which protect the eggs. Cysts can survive for many years in the soil until favorable conditions induce hatching of the juveniles.

The beet cyst nematode Heterodera schachtii is a pathogen of sugar beet (Beta vulgaris) but can also complete its life cycle on Arabidopsis roots growing on agar plates under ...
[摘要]  植物寄生线虫是许多作物上的毁灭性害虫。 孢囊线虫的幼虫(J2)侵入根以诱导合胞体。 这个饲养场是他们唯一的营养来源。 雄性线虫在第四蜕皮后离开根以与雌性交配。 雌性在其整个生命期间保持附着于其合胞体,并产生数百个鸡蛋,其包含在它们的身体中。 当女性死于他们的身体形成囊肿,保护卵。 囊肿可以在土壤中存活多年,直到有利条件诱导幼鱼孵化。
甜菜孢囊线虫 Heterodera schachtii 是甜菜的病原体( vulgaris ),但也可以在拟南芥 根在无菌条件下在琼脂平板上生长。 我们在这里介绍的H的股票文化的协议。 schachtii)和在琼脂平板上的感染测定。

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