相关实验视频

Updated: Jul 26, 2025

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

OsOLP1通过调节ABA生物合成和素积累来促进大米的干旱耐受性

Jianpei Yan¹, Vincent Ninkuu¹, Zhenchao Fu¹

¹State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.

Frontiers in plant science

|June 16, 2023

概括

一种新型蛋白质,OsOLP1,通过增加素和ABA水平,调节口腔关闭,并促进素合成,提高了大米的干旱耐受性. 这一发现为改善作物弹性提供了新的见解.

科学领域:

植物生物学植物生物学
分子遗传学分子遗传学
农业科学农业科学

背景情况:

米是重要的主食作物,由于干旱压力而面临重大产量损失.
众所周知,奥斯莫丁类蛋白质可以赋予植物对各种压力的抵抗力.
在大米干旱耐受性中,奥斯莫丁类蛋白质的特定作用需要进一步阐明.

研究的目的:

为了识别和表征中一种新型的类似于奥斯莫丁的蛋白质,该蛋白质与干旱耐受性有关.
为了研究OsOLP1赋予大米抗旱能力的分子机制.
评估OsOLP1在提高作物弹性方面的潜力.

主要方法:

鉴定了一种由干旱和NaCl压力诱导的新型奥斯莫丁样蛋白,OsOLP1.
使用CRISPR/Cas9基因编辑来创建OsOLP1淘汰赛线.
生成的转基因大米系表达过度的OsOLP1.1.
评估的生理参数包括叶子中的水含量,存活率,口腔关闭,素含量,ABA积累和素合成.

主要成果:

过度表达OsOLP1显著提高干旱耐受性,保持高叶子水含量和生存率.
过度表达OsOLP1导致了96%的口腔关闭,素增加了2.5倍,ABA增加了1.5倍,素合成增加了50%.
与野生类型相比,OsOLP1淘汰线表现出降低的ABA,降低的红素和减少的干旱耐受性.

结论:

OsOLP1在调节大米干旱耐受性方面发挥着至关重要的作用.
通过OsOLP1介导的抗干旱性与ABA积累,口腔调节,素和素合成有关.
OsOLP1代表了开发抗旱米品种的有希望的目标.

关键词:

在 OsOLP1 系统中.阿布西斯酸是什么?阿布西斯酸是什么耐旱耐受性耐旱耐受性红色的线性蛋白质 (lignin) 是一种米米饭米饭米饭米饭.

更多相关视频

Lignin Down-regulation of Zea mays via dsRNAi and Klason Lignin Analysis

Lignin Down-regulation of Zea mays via dsRNAi and Klason Lignin Analysis

Published on: July 23, 2014

Investigating Interactions Between Histone Modifying Enzymes and Transcription Factors in vivo by Fluorescence Resonance Energy Transfer

Investigating Interactions Between Histone Modifying Enzymes and Transcription Factors in vivo by Fluorescence Resonance Energy Transfer

Published on: October 14, 2022

相关概念视频

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.

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 Salt Stress

Responses to Salt Stress

Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.

Regulation of Transpiration by Stomata

Regulation of Transpiration by Stomata

During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.

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...