相关实验视频

Updated: May 27, 2025

Imaging and Analysis for Quantifying Maize (Zea mays) Abiotic Stress Phenotypes

Imaging and Analysis for Quantifying Maize (Zea mays) Abiotic Stress Phenotypes

Published on: March 28, 2025

过度表达的酸过氧化酶2 (APX2) 基因改善了玉米的干旱耐受性

Bai Gao¹, Yiran Wang², Jing Qu³

¹College of Agriculture, Jilin Agricultural University, Changchun, 130118 China.

Molecular breeding : new strategies in plant improvement

|February 18, 2025

概括

在玉米中增强APX2基因通过减少活性氧物种 (ROS) 来提高抗干旱能力. 这项研究为开发耐旱玉米品种和了解植物压力机制提供了新的途径.

科学领域:

植物科学植物科学
遗传学遗传学是一个
生物化学生物化学

背景情况:

玉米是全球重要的粮食作物,因气候变化导致干旱频率增加而受到威胁.
反应性氧物种 (ROS) 在干旱压力下积聚,影响植物生长.
亚酸盐过氧化酶 (APX) 是清除ROS和保持植物健康的关键.

研究的目的:

研究ZmAPX2基因在提高玉米耐旱性方面的作用.
开发基因改造的玉米,提高对干旱条件的抵抗力.

主要方法:

与APX相关的基因被放大,通过表达分析识别了ZmAPX2.
植物表达载体 (pCAMBIA3301-ZmAPX2-Bar和pCXB053-ZmAPX2-Bar) 被构建并转化为玉米杂交系H120.
干旱耐受性被评估使用T2世代植物的表型,生理,生化和农学特征.

主要成果:

在转型玉米系中证实了ZmAPX2基因的过度表达.
在干旱压力下,ZmAPX2增强的玉米表现出更好的表型特征和生理指数.
在增强APX2基因表达的玉米系中观察到减少ROS含量.

结论:

增加APX2基因表达显著提高了玉米的抗旱能力.
这项研究为开发新型耐旱玉米生殖质提供了基础.
了解APX2的作用,可以了解植物非生物应激抵抗机制.

关键词:

在APX基因中,APX基因干旱造成的压力是干旱.玉米玉米玉米是一种过度表达和淘汰植物.生理和生化指标生理和生化指标

更多相关视频

Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput

Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput

Published on: March 30, 2018

Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.

Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.

Published on: February 15, 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.

Responses to Drought and Flooding

Responses to Drought and Flooding

Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.

Light Acquisition

Light Acquisition

In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.

Plant Breeding and Biotechnology

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.