Related Experiment Video
Updated: Aug 25, 2025
08:36
Development of Targeting Induced Local Lesions IN Genomes TILLING Populations in Small Grain Crops by Ethyl Methanesulfonate Mutagenesis
Published on: July 16, 2019
11.7K
The wheat clock strikes a balance across subgenomes to regulate gene expression
1Department of Plant and Microbial Biology, University of Minnesota, Saint Paul, Minnesota, United States of America.
Plos Biology
|October 14, 2022
Summary
Understanding polyploid crops like bread wheat is key to increasing yields. A new study reveals how the circadian clock influences agriculturally important traits in wheat.
Area of Science:
- Plant Science
- Genetics
- Molecular Biology
Background:
- Polyploidy, common in major crops such as bread wheat, presents challenges for increasing crop yields.
- The circadian clock, an internal biological timekeeper, regulates various physiological processes in plants.
Purpose of the Study:
- To investigate the role of the circadian clock in regulating agriculturally relevant traits in polyploid bread wheat.
- To provide a transcriptomic perspective on clock-mediated trait regulation in wheat.
Main Methods:
- Transcriptomic analysis of bread wheat.
- Investigating gene expression patterns related to the circadian clock and crop traits.
Main Results:
- The study identified specific genes and pathways influenced by the circadian clock that affect key agricultural traits in wheat.
- A transcriptomic map was generated, illustrating the clock's regulatory network in polyploid wheat.
Conclusions:
- The circadian clock plays a significant role in modulating agriculturally important traits in polyploid bread wheat.
- This research offers insights into leveraging the circadian clock for crop improvement strategies.
Related Concept Videos
02:33Combinatorial Gene Control
8.4K
Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
8.4K
01:17Gene Regulation During Sporulation
70
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...
70
01:23Regulation of Expression at Multiple Steps
979
The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
979
01:27Constitutive and Regulated Gene Expression
97
Gene expression in prokaryotes is governed by constitutive and regulated systems, allowing cells to balance the production of essential proteins with adaptive responses to environmental changes.Constitutive Gene ExpressionConstitutive, or housekeeping, genes are continuously expressed as they encode proteins vital for fundamental cellular processes. These include enzymes for glycolysis, ribosomal components for protein synthesis, and proteins involved in DNA replication. Their constant...
97
02:24Regulation of Expression Occurs at Multiple Steps
23.0K
Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
23.0K
01:33Pleiotropy
40.8K
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
40.8K