拼接因子SR45在Arabidopsis thaliana的高光应激下负面调节氨酸积累
1Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
Life (Basel, Switzerland)
|June 28, 2023
概括
拼接调节器SR45在Arabidopsis中抑制了在高强度光下安托亚宁的积累. 失去SR45功能会增强安东素的产生和氧化应激耐受性.
科学领域:
- 植物分子生物学 植物分子生物学
- 植物生理学 植物生理学
- 基因调节 基因调节
背景情况:
- 高强度光线 (HL) 诱导抗生素积累,这对光保护和抗氧化至关重要.
- 氨酸生物合成的转录后调节,特别是通过RNA剪接,尚不清楚.
- 阿拉比多普西斯拼接调节器SR45参与应激反应.
研究的目的:
- 调查SR45及其异型在高强度光诱导的素积累中的作用.
- 阐明SR45异型在调节安托氨酸生物合成中的作用.
- 探索SR45介导的监管对植物应力耐受性的影响.
主要方法:
- 在轻度应力下分析SR45表达.
- 突变SR45和SR45异型过度表达线的表型特征.
- 识别了参与氨酸合成的SR45基因.
- 评估帕拉克瓦特诱导的氧化应激耐受性.
主要成果:
- SR45表达是由光应力诱导的,其促进体含有对光有反应的元素.
- 在HL下,sr45突变体表现出显著更高的安托西亚宁积累.
- SR45.1和SR45.2具有不同的功能;SR45.1逆转了素积累.
- sr45突变体和SR45.2过度表达系对氧化应激有增强的耐受性.
结论:
- 阿拉比多普西斯SR45在HL下作为抗生素积累的抑制剂作用.
- 通过SR45介导的拼接调节影响了安东素的产生和氧化应激耐受性.
- SR45是基因改造的潜在目标,旨在提高植物的抗压能力.
关键词:
阿拉比多普西斯 (Arabidopsis) 是一种植物.通过RNA拼接进行RNA拼接.这种SR蛋白质是SR蛋白质.在SR45中,它是SR45的.安托西安尼尼 (anthocyanin) 是一种环境压力环境压力轻度压力是一种轻度的压力.摄影抑制的作用是这样的:更多相关视频
10:29Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput
Published on: March 30, 2018
6.6K
10:10Investigating Tissue- and Organ-specific Phytochrome Responses using FACS-assisted Cell-type Specific Expression Profiling in Arabidopsis thaliana
Published on: May 29, 2010
15.9K
相关概念视频
Gene Regulation During Sporulation
41
Sporulation is a complex developmental process that allows certain Gram-positive bacteria, such as Bacillus subtilis and Clostridium species, to survive extreme environmental conditions. This process is tightly regulated by a series of signaling cascades and transcriptional controls, ensuring the formation of a highly resistant endospore.Sporulation is triggered by unfavorable conditions, such as nutrient depletion, and is governed by a phosphorelay system. One of the sensor kinases, such as...
41
Alternative RNA Splicing
21.5K
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
21.5K
Photoreceptors and Plant Responses to Light
20.5K
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.
20.5K
Cell Signaling in Plants
5.7K
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...
5.7K
The Antenna Complex
6.1K
Plants and other photosynthetic organisms comprise pigments capable of absorption of direct sunlight. These pigments are present in the reaction center - the main site of photochemical reactions as well as in the antenna complex. Under average light conditions, the rate at which reaction center pigments absorb light is far below the electron transport chain's capacity. As a result, the reaction center alone cannot provide enough energy to drive photosynthesis. The photosynthetic efficiency...
6.1K
Biological Clocks and Seasonal Responses
34.8K
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
34.8K
