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Related Concept Videos

Transcription01:10

Transcription

146.6K
Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
146.6K
Cell Specific Gene Expression01:58

Cell Specific Gene Expression

13.4K
Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
13.4K
Riboswitches01:56

Riboswitches

8.0K
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...
8.0K

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Updated: Jun 3, 2025

Phosphoproteomic Strategy for Profiling Osmotic Stress Signaling in Arabidopsis
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Comparative transcriptomics pinpoints conserved and specific transcriptional responses to phosphorus limitation.

Pooja Pant1,2, Hui Duan2, Nick Krom1

  • 1Noble Research Institute, Ardmore, OK 73401, USA.

Journal of Experimental Botany
|January 9, 2025
PubMed
Summary

Translating plant gene knowledge across species is key for crop improvement. This study identifies conserved phosphorus (P) starvation responses, aiding the development of P-efficient crops.

Keywords:
Comparative transcriptomicsRNA sequencinggene expressionmodel plant speciesphosphorus limitationtranslational researchunannotated genes

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Area of Science:

  • Plant Biology
  • Genomics
  • Agricultural Science

Background:

  • Translating knowledge from model plants like Arabidopsis to crops is crucial for agricultural advancement.
  • Identifying functional gene homologs (orthologs) across species is challenging but vital for crop improvement.
  • Dwindling fertilizer resources and environmental stresses necessitate the development of more efficient crops.

Purpose of the Study:

  • To compare phosphorus (P) starvation responses across diverse plant species.
  • To identify conserved and species-specific transcriptional regulations under P limitation.
  • To provide a resource for developing P-efficient crops through functional genomics.

Main Methods:

  • Large-scale RNA sequencing (RNA-Seq) transcriptomics of Arabidopsis, Medicago, Brachypodium, and Setaria.
  • Comparative analysis of gene expression under P-sufficient and P-limited conditions.
  • Experimental verification of P-limitation marker genes in Prunus using RT-qPCR.

Main Results:

  • Approximately 80% of Arabidopsis P-limitation-induced genes have homologs in other species, but only 50% retain the P-limitation response.
  • Hallmark genes of the P-starvation response are conserved across all four studied species.
  • The study identified novel, unannotated, conserved, and species-specific regulatory mechanisms for P-starvation.

Conclusions:

  • Comparative transcriptomics effectively identifies functional orthologs and expressologs in crop species.
  • This research provides a valuable resource for understanding and improving P-use efficiency in crops.
  • The findings support the translation of plant biological knowledge to enhance agricultural sustainability.