相关实验视频

Updated: Jun 27, 2025

High Resolution Quantification of Crystalline Cellulose Accumulation in Arabidopsis Roots to Monitor Tissue-specific Cell Wall Modifications

High Resolution Quantification of Crystalline Cellulose Accumulation in Arabidopsis Roots to Monitor Tissue-specific Cell Wall Modifications

Published on: May 10, 2016

戈尔吉局部化的APYRASE 1对Arabidopsis生长至关重要,因为它会影响缺乏症下细胞壁的完整性

Ziwei Zhang^1,2, Jinliang Yao^1,2, Zhexuan Jiang^1,2

¹National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China.

Physiologia plantarum

|April 30, 2024

概括

一种新的戈尔吉局部化酶AtAPY1对于维持植物细胞壁的完整性和在缺乏的情况下的生长至关重要. 它的缺失会破坏细胞分裂和多糖合成,影响根部的发育.

科学领域:

植物生物学植物生物学
分子生物学分子生物学
生物化学生物化学

背景情况:

核酸三酸二基酶 (NTPDases/APYRASEs) 调节了细胞外核酸水平.
戈尔吉局部化的NTPDases对于糖化至关重要,但研究不足.
对于植物细胞壁结构和功能至关重要.

研究的目的:

鉴定和描述一种新的戈尔吉局部化的NTPDase,它参与植物对缺乏的反应.
研究AtAPY1在细胞壁完整性和低条件下的植物生长中的作用.

主要方法:

对AtAPY1.1的基因鉴定和表征.
在缺乏下对AtAPY1表达模式的分析.
使用AtAPY1-GFP融合蛋白进行亚细胞局部化研究.
生物化学测试以确定AtAPY1的酶活性.
在不同水平下对AtAPY1功能丧失突变体的表型分析.
细胞壁组成分析 (pectin,RG-II,纤维素).

主要成果:

在限制下,Golgi局部化的NTPDaseAtAPY1对于植物生长和细胞壁完整性至关重要.
失去AtAPY1功能导致根细胞延长和分裂受损,导致根胀和根毛在低应力下增加.
缺乏症显著诱导AtAPY1表达在根干和中.
在AtAPY1中,优选化UDP和GDP,可能会影响NDP-糖运输和细胞壁多糖化合物合成.
突变者表现出增加的pectin,减少的酸二度化RG-II和减少的纤维素含量,表明细胞壁组成的改变.

结论:

通过调节细胞壁完整性,AtAPY1在调节植物对低可用性的反应方面发挥了新而至关重要的作用.
破坏AtAPY1功能会影响核酸糖代谢的恒常性,这对于细胞壁多糖化合物合成至关重要.
这些发现凸显了Golgi局部化的NTPDases在植物发育和适应营养压力的重要性.

更多相关视频

Translating Ribosome Affinity Purification TRAP to Investigate Arabidopsis thaliana Root Development at a Cell Type-Specific Scale

Translating Ribosome Affinity Purification TRAP to Investigate Arabidopsis thaliana Root Development at a Cell Type-Specific Scale

Published on: May 14, 2020

A Strategy to Validate the Role of Callose-mediated Plasmodesmal Gating in the Tropic Response

A Strategy to Validate the Role of Callose-mediated Plasmodesmal Gating in the Tropic Response

Published on: April 17, 2016

相关概念视频

Role of Microtubules in Cell Wall Deposition

Role of Microtubules in Cell Wall Deposition

Microtubules are small hollow tubes in eukaryotic cells. The cell wall microtubules are polymerized dimers of two globular proteins, α-tubulin and β-tubulin, two globular proteins. With a diameter of about 25 nm, microtubules are the widest components of the cytoskeleton. They help the cell resist compression and provide a track along which vesicles move through the cell or pull replicated chromosomes to opposite ends of a dividing cell. Microtubules go through quick cycles of...

Cell Signaling in Plants

Cell Signaling in Plants

Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...

Plant Cell Wall

Plant Cell Wall

The plant cell wall gives plant cells shape, support, and protection. As a cell matures, its cell wall specializes according to the cell type. For example, the parenchyma cells of leaves possess only a thin, primary cell wall.