相关实验视频

Updated: Jul 14, 2025

Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade

Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade

Published on: August 14, 2019

黄醇会影响Arabidopsis thaliana中相互关联的葡萄糖酸盐和肉素生物合成途径

Jogindra Naik¹, Shivi Tyagi¹, Ruchika Rajput¹

¹National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India.

Journal of experimental botany

|October 9, 2023

概括

黄醇调节植物基因表达,影响应激耐受性和发育. 这项研究揭示了黄醇如何影响植物信号通路,影响防御化合物和氨基酸合成.

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:

黄醇是关键的植物生物分子,参与了应激耐受和发育.
它们在全球基因表达和信号通路中的确切作用在很大程度上仍未被描述.

研究的目的:

为了研究flavonols调节植物信号通路的分子机制.
探索黄醇对基因表达和代谢物概况的影响.

主要方法:

野生类型和缺乏黄素的阿拉比多普西斯突变体 (fls1) 的比较转录组概况 (RNA-seq).
有或没有外源性黄醇补充剂 (kaempferol, quercetin, rutin) 的苗木的向代谢物概况.
对透明的testa7突变体进行分析,以澄清特定的黄醇作用.

主要成果:

黄醇在与卡马莱克辛和酸葡萄糖酸盐生物合成相关的途径中显著改变了基因表达.
黄醇通过转录因子介导的基因上调调节负调节了卡马莱克辛,但通过转录因子介导的基因上调调节促进了阿里法性葡萄糖酸盐.
上游氨基酸生物合成基因 (甲氨酸,氨酸) 受黄醇水平的影响;氨酸对葡萄糖酸盐生物合成产生显著影响.

结论:

黄醇干扰植物信号通路,影响防御化合物合成和氨基酸代谢.
这项研究阐明了植物中黄醇的特定分子标和生物活性.
了解黄醇介导信号提供了植物应激反应和发展的见解.

关键词:

阿拉比多普西斯塔利亚纳 (Arabidopsis thaliana) 是一种植物.黄醇合成酶的使用方法透明头部 7 透明头部 7 卡马莱克辛 (Camalexin) 是一种药物.黄醇 (Flavonols) 是一种类型的黄.葡萄糖酸盐是什么葡萄糖酸盐代谢产物的代谢产物有活性氧物种的反应性氧物种.

更多相关视频

A Straightforward Method for Glucosinolate Extraction and Analysis with High-pressure Liquid Chromatography HPLC

A Straightforward Method for Glucosinolate Extraction and Analysis with High-pressure Liquid Chromatography HPLC

Published on: March 15, 2017

Pattern-Triggered Oxidative Burst and Seedling Growth Inhibition Assays in Arabidopsis thaliana

Pattern-Triggered Oxidative Burst and Seedling Growth Inhibition Assays in Arabidopsis thaliana

Published on: May 21, 2019

相关概念视频

Adaptations that Reduce Water Loss

Adaptations that Reduce Water Loss

Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.

C4 Pathway and CAM

C4 Pathway and CAM

Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...

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...