转录组分析揭示了农田大米的质量改善机制
Feiyan Xue1, Lele Ning1, Zhuangzhuang Qiang1
1School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, China.
Foods (Basel, Switzerland)
|August 28, 2025
概括
米的发芽和谷物质量比主要的米更好. 这是由于增强了抗氧化酶活性和特定基因表达,从而提高了大米的质量.
科学领域:
- 农业科学
- 植物生理学
- 分子生物学
背景情况:
- 与传统主要米种植相比, 米种植有可能提高产量和谷物质量.
- 对于优化种植方式至关重要.
研究的目的:
- 为了比较拉通和主要大米的发芽,和抗氧化酶活动.
- 阐明基因机制,特别是基因表达模式,从而提高米的质量.
主要方法:
- 对发芽潜力,发芽率,状粒度和度进行比较分析.
- 抗氧化酶活动的测定,包括超氧化解酶 (SOD) 和酶 (CAT).
- 转录组分析以识别不同表达的基因与主要大米.
主要成果:
- 米的发芽潜力和发芽速度显著提高,并且的发芽率降低.
- 在米中观察到SOD和CAT的活性升高.
- 在米中发现了qLTG3-1,OsLOX2,OsSAMDC2,OsSAMDC4,GAD3,过氧化酶基因和OsNCED3等基因的上调表达.
结论:
- 与主要大米相比,米具有更好的发芽和谷物质量特征.
- 增强的发芽与参与发芽和应激耐受性的高调基因有关.
- 较低的度与高温耐受性,氧化应激反应和激素调节相关的高调基因有关.
更多相关视频
09:43Author Spotlight: Streamlining Rice Breeding with CRISPR/Cas for Obtaining Optimal Phenotypic and Agronomic Traits
Published on: January 3, 2025
2.6K
05:22Transverse Sectioning of Mature Rice Oryza sativa L. Kernels for Scanning Electron Microscopy Imaging Using Pipette Tips as Immobilization Support
Published on: January 25, 2022
3.8K
相关概念视频
02:24Ribosome Profiling
3.6K
Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
3.6K
02:07Improving Translational Accuracy
2.7K
2.7K
01:56Riboswitches
8.5K
Riboswitches are non-coding mRNA domains that regulate the transcription and translation of downstream genes without the help of proteins. Riboswitches bind directly to a metabolite and can form unique stem-loop or hairpin structures in response to the amount of the metabolite present. They have two distinct regions – a metabolite-binding aptamer and an expression platform.
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
8.5K
01:23Transcriptional Regulation: Riboswitches
113
Riboswitches are RNA elements that regulate gene expression by altering their secondary structures in response to specific effector molecules. These elements, located in the leader regions of certain mRNAs, act as transcriptional regulators by toggling between alternative conformations to control downstream gene expression. Riboswitch-mediated regulation is a precise mechanism for modulating biosynthetic pathways, as exemplified by the riboflavin biosynthesis pathway in Bacillus...
113
02:22Regulated mRNA Transport
2.9K
2.9K
02:51mRNA Stability and Gene Expression
5.7K
The structure and stability of mRNA molecules regulates gene expression, as mRNAs are a key step in the pathway from gene to protein. In eukaryotes, the half-life of mRNA varies from a few minutes up to several days. mRNA stability is essential in growth and development. The absence of the proteins regulating its stability, such as tristetraprolin in mice, can cause systemic issues, including bone marrow overgrowth, inflammation, and autoimmunity.
Cis-acting Elements involved in mRNA stability
Cis-acting Elements involved in mRNA stability
5.7K