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Related Concept Videos

Transcription01:10

Transcription

158.8K
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...
158.8K
Gene Regulation During Sporulation01:17

Gene Regulation During Sporulation

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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...
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Polytene Chromosomes02:04

Polytene Chromosomes

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Plant Hormones01:56

Plant Hormones

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Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.
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Plant Hormones01:56

Plant Hormones

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Transcriptome changes in Polygonum multiflorum Thunb. roots induced by methyl jasmonate.

Hong-chang Liu1, Wei Wu1, Kai Hou1

  • 1College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China.

Journal of Zhejiang University. Science. B
|December 8, 2015
PubMed
Summary

Methyl jasmonate (MeJA) treatment significantly altered gene expression in Polygonum multiflorum roots, revealing key pathways for medicinal compound biosynthesis. This study provides a foundation for understanding MeJA

Keywords:
Differentially expressed genesMethyl jasmonatePolygonum multiflorum Thunb.Transcriptome change

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Area of Science:

  • Plant Science
  • Molecular Biology
  • Genomics

Background:

  • Transcriptome profiling is crucial for understanding plant stress responses.
  • Methyl jasmonate (MeJA) is a known plant signaling molecule, but its effect on Polygonum multiflorum (a medicinal plant) transcriptomes is uncharacterized.
  • Polygonum multiflorum possesses significant medicinal value.

Purpose of the Study:

  • To investigate the MeJA-induced transcriptome response in Polygonum multiflorum roots.
  • To identify differentially expressed genes (DEGs) and enriched metabolic pathways affected by MeJA.
  • To lay the groundwork for future research on functional genes related to medicinal components.

Main Methods:

  • Transcriptome profiling of P. multiflorum seedlings.
  • Root irrigation treatment with 0.25 mmol/L MeJA.
  • Differential gene expression analysis and pathway enrichment analysis.

Main Results:

  • MeJA treatment induced 18,677 differentially expressed genes (DEGs) in P. multiflorum roots (4,535 up-regulated, 14,142 down-regulated).
  • DEGs were associated with 125 metabolic pathways, including primary and secondary metabolism.
  • Enriched pathways with pharmacological relevance include arachidonic acid metabolism, linoleic acid metabolism, and stilbenoid biosynthesis.

Conclusions:

  • MeJA significantly impacts the transcriptome of Polygonum multiflorum roots.
  • The study identified key metabolic pathways involved in the biosynthesis of pharmacologically active compounds.
  • These findings provide a foundation for future functional genomics studies in P. multiflorum.