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FisherbrandTM Petri Dishes Specialty

Fisherbrand TM培养皿专业

Company: Thermo Fisher Scientific
Catalog#: FB0875711A
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Assessing Long-distance Transport from Photosynthetic Source Leaves to Heterotrophic Sink Organs with [14C]CO2
Author:
Date:
2017-12-20
[Abstract]  Phloem loading and transport of photoassimilate from photoautotrophic source leaves to heterotrophic sink organs are essential physiological processes that help the disparate organs of a plant function as a single, unified organism. We present three protocols we routinely use in combination with each other to assess (1) the relative rates of sucrose (Suc) loading into the phloem vascular system of mature leaves (Yadav et al., 2017a), (2) the relative rates of carbon loading and transport through the phloem (Yadav et al., 2017b), and (3) the relative rates of carbon unloading into heterotrophic sink organs, specifically roots, after long-distance transport (this protocol). We propose that conducting all three protocols on experimental and control plants provides a ... [摘要]  来自光合自养源的光合同化物的韧皮部装载和运输到异养宿主器官是必不可少的生理过程,其帮助植物的不同器官作为单一的统一生物体起作用。我们提出了三种方案,我们经常使用它们相互结合来评估(1)蔗糖(Suc)加载到成熟叶片的韧皮部血管系统中的相对比率(Yadav等人,2017a), (2)通过韧皮部的碳载量和运输的相对速率(Yadav等人,2017b),和(3)碳长期释放到异养池器官特别是根中的相对速率距离传输(这个协议)。我们建议,在实验和对照植物上进行所有三种方案提供了全植物碳分配的可靠比较,并且将与单独进行的单一方案相关联的歧义降至最低(Dasgupta等人,2014; Khadilkar 。,2016)。在该方案中,在源叶片和韧皮部装载和运输14 C标签到异养宿主器官中,[14 C] CO 2 2被光致同化,尤其是根,通过闪烁计数进行量化。使用该协议,我们证明在拟南芥的伴侣细胞中蔗糖转运蛋白和液泡质子泵激焦磷酸酶的过表达增强了14 C标记光合同化物向宿主器官的转运(Dasgupta <等人,2014; Khadilkar等人,2016)。这种方法可以适用于量化其他植物物种的长途运输。

【背景】通过从自养源器官到异养池的韧皮部的长途运输是植物生长和产量的基础。根据其在植物中的作用和位置及其在该地区的主要功能,韧皮部网络通常分为收集韧皮部,运输韧皮部和释放韧皮部(Ayre,2011)。收集韧皮部是糖和其他化合物装入韧皮部以准备运输的地方。在已建立的植物中,收集韧皮部是发生韧皮部负载的成熟,光自养叶子的小脉。我们的第一个伴侣协议(Yadav ...

Preparation of Synaptosomes from the Motor Cortex of Motor Skill Trained Mice
Author:
Date:
2015-02-20
[Abstract]  Learning and memory are thought to occur due to changes in synaptic strength. Strengthening of synapses due to Long Term Potentiation mechanisms are mediated by increases in synaptic α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) levels. Here we describe a protocol to isolate and quantify synaptic AMPAR subunit GluA1 levels from the motor cortex of mice which have undergone motor skill training. [摘要]  认为学习和记忆由于突触强度的变化而发生。 由于长期增强机制引起的突触的加强由突触型α-氨基-3-羟基-5-甲基-4-异恶唑丙酸受体(AMPAR)水平的增加介导。 在这里,我们描述了一个方法来分离和量化来自运动技能训练的小鼠的运动皮质的突触AMPAR亚基GluA1水平。

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