相关实验视频

Updated: Jun 6, 2025

Inducing Hairy Roots by Agrobacterium rhizogenes-Mediated Transformation in Tartary Buckwheat Fagopyrum tataricum

Inducing Hairy Roots by Agrobacterium rhizogenes-Mediated Transformation in Tartary Buckwheat Fagopyrum tataricum

Published on: March 11, 2020

紫外B辐射刺激黄类生物合成和麦芽中的抗氧化系统

Xin Tian¹, Meixia Hu¹, Jia Yang²

¹College of Food Science and Engerning, Yangzhou University, Yangzhou 210095, China.

Foods (Basel, Switzerland)

|November 27, 2024

概括

紫外线B (UV-B) 辐射可以促进黄化合物合成和麦芽的抗氧化能力. 这种非生物压力增强了关键的酶和基因表达,改善了芽健康,尽管有些损伤.

科学领域:

植物科学植物科学
生物化学生物化学
农业农业农业农业

背景情况:

诸如紫外线-B (UV-B) 辐射等非生物应激可以影响植物中的二次代谢物合成和抗氧化剂系统.
了解植物对UV-B的反应对于优化作物种植和提高营养价值至关重要.

研究的目的:

为了研究紫外线辐射对黄类生物合成和麦芽中的抗氧化剂系统的影响.
为了阐明UV-B诱导的麦芽变化的潜在分子机制.

主要方法:

麦芽被暴露在UV-B辐射中.
测量了黄酸含量,酶活性 (氨氨酸氨基酶,4 - 酸-CoA结合酶,4 - 酸-4-氧化酶,酸-4-氧化酶,酸盐合成酶,酸酶,过氧化酶,超氧化物脱酶),基因表达水平和抗氧化活性 (ABTS,DPPH,FRAP).
评估了细胞膜损伤指标 (过氧化,甲) 和生长.

主要成果:

紫外线B处理显著增加了黄酸含量,特别是在3天大的芽中.
参与黄类生物合成的关键酶和基因显示活性和表达增加.
尽管UV-B引起了一些细胞膜损伤和抑制生长,但它增强了抗氧化酶活动和基因表达,提高了基因清除能力.
叶绿素a和b含量也在UV-B辐射下增加.

结论:

紫外线-B辐射是麦芽种植的有益压力因素,导致黄酸积累增加.
紫外线B处理的芽中增强的抗氧化剂系统有助于减轻压力引起的损伤.
紫外线治疗提供了一种有前途的策略,可以改善麦芽的营养和抗氧化特性.

关键词:

功能性食品是一种功能性食品.基因表达的基因表达方式发芽发芽发芽是一个过程.烯基的代谢过程

更多相关视频

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

Inactivation of Pathogens via Visible-Light Photolysis of Riboflavin-5′-Phosphate

Inactivation of Pathogens via Visible-Light Photolysis of Riboflavin-5′-Phosphate

Published on: April 6, 2022

相关概念视频

Mutations

Mutations

Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...

Photoreceptors and Plant Responses to Light

Photoreceptors and Plant Responses to Light

Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.

Responses to Heat and Cold Stress

Responses to Heat and Cold Stress

Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.