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Plant Cells and Tissues02:01

Plant Cells and Tissues

Plant tissues are collections of similar cells performing related functions. Different plant tissues will have their own specialized roles and can be combined with other tissues to form organs such as flowers, fruit, stem, and leaves. Two major types of plant tissue include meristematic and permanent tissue.Meristematic tissue, the primary growth tissue in plants, is capable of self-renewal and indefinite cell division. Every cell in the plant originates from a meristem. Meristematic tissue is...
Plant Tissue Culture02:57

Plant Tissue Culture

Plant tissue culture is widely used in both primary and applied science. Applications range from plant development studies to functional gene studies, crop improvement, commercial micropropagation, virus elimination, and conservation of rare species.
Plant Breeding and Biotechnology01:59

Plant Breeding and Biotechnology

Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
Transgenic Plants02:50

Transgenic Plants

Recombinant DNA technology called transgenesis is often used to add a foreign gene or remove a detrimental gene from an organism. Such genetically modified organisms are called transgenic organisms.
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...
Animal and Plant Cell Structure01:30

Animal and Plant Cell Structure

Animal and plant cells not only differ in their structure, function, and mode of nutrition but also in how they reproduce, specialize, and organize into complex structures.
Cell Division
Though both plant and animal cells divide by mitosis (for non-gametic cells) and meiosis (for gametic cells), they differ in the specifics of this process. Unlike animal cells, plant cells lack centrosomes — an organelle responsible for organizing the spindle fibers and segregating the chromosomes during cell...
Plant Tissues01:18

Plant Tissues

Plants are multicellular eukaryotes with tissue systems made of various cell types that carry out specific functions. Different tissues work together to perform a unique function and form an organ. Organs working together form organ systems. Vascular plants have two distinct organ systems: a shoot system and a root system. The shoot system consists of two portions: the vegetative (non-reproductive) parts of the plant, such as the leaves and the stems, and the reproductive parts of the plant,...

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関連する実験動画

Updated: Jul 12, 2026

Peptide-derived Method to Transport Genes and Proteins Across Cellular and Organellar Barriers in Plants
08:48

Peptide-derived Method to Transport Genes and Proteins Across Cellular and Organellar Barriers in Plants

Published on: December 16, 2016

植物再生のための分子フレームワーク

Jian Xu1, Hugo Hofhuis, Renze Heidstra

  • 1Department of Molecular Genetics, Utrecht University, Padualaan 8, 3584CH Utrecht, Netherlands.

Science (New York, N.Y.)
|January 21, 2006
PubMed
まとめ
この要約は機械生成です。

アラビドプシスの根の再生には,オクシンホルモンの再分配が含まれます. 重要な転写因子 (PLETHORA,SHORTROOT,SCARECROW) は,傷害後のオキシン輸送と細胞運命を回復するために不可欠です.

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A Method for Characterizing Embryogenesis in Arabidopsis
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A Method for Characterizing Embryogenesis in Arabidopsis

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An Efficient and Reproducible Method for Producing Composite Plants by Agrobacterium rhizogenes-Based Hairy Root Transformation
04:09

An Efficient and Reproducible Method for Producing Composite Plants by Agrobacterium rhizogenes-Based Hairy Root Transformation

Published on: June 30, 2023

関連する実験動画

Last Updated: Jul 12, 2026

Peptide-derived Method to Transport Genes and Proteins Across Cellular and Organellar Barriers in Plants
08:48

Peptide-derived Method to Transport Genes and Proteins Across Cellular and Organellar Barriers in Plants

Published on: December 16, 2016

A Method for Characterizing Embryogenesis in Arabidopsis
10:24

A Method for Characterizing Embryogenesis in Arabidopsis

Published on: August 4, 2017

An Efficient and Reproducible Method for Producing Composite Plants by Agrobacterium rhizogenes-Based Hairy Root Transformation
04:09

An Efficient and Reproducible Method for Producing Composite Plants by Agrobacterium rhizogenes-Based Hairy Root Transformation

Published on: June 30, 2023

科学分野:

  • 植物生物学 植物生物学
  • 発達生物学 発達生物学とは
  • 分子遺伝学 分子遺伝学

背景:

  • 臓器の再生は植物や一部の動物に共通しているが,分子メカニズムはほとんど不明のままである.
  • 植物再生の理解は,農業および生態学的アプリケーションに不可欠です.

研究 の 目的:

  • アラビドプシスの根の局所再生の基礎となる分子メカニズムを調査する.
  • 傷を負った後のオクシン輸送と細胞運命を回復する重要な要因を特定する.

主な方法:

  • アラビドプシスの根の先端をレーザーで傷つけ,オキシンの流れを阻害する.
  • 重要な転写因子 (PLETHORA, SHORTROOT, SCARECROW) の遺伝子発現とタンパク質の局所化の分析.
  • アクシン輸送のダイナミクスと傷付いた後のセルファート変化の評価.

主要な成果:

  • レーザー傷は,アラビドプシスの根の先にあるオキシンの流れを妨害し,細胞の運命を変化させます.
  • PLETHORA,SHORTROOT,およびSCARECROWの転写因子は再生のために必要である.
  • これらの要因は,PINオクシン流出タンパク質を調節し,再生する根の先でオクシン輸送を再確立します.

結論:

  • アラビドプシスの根の再生は,胚性幹細胞のパターニング要因を含むメカニズムを使用します.
  • 再生プロセスは,損傷後のオクシン分布の変化に反応し,安定させます.
  • この研究は,植物器官再生のための新しい分子経路を明らかにしています.