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Related Concept Videos

Alternative RNA Splicing02:18

Alternative RNA Splicing

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...
Alternative RNA Splicing02:18

Alternative RNA Splicing

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...
Defenses Against Pathogens and Herbivores02:26

Defenses Against Pathogens and Herbivores

Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.
RNA Splicing01:32

RNA Splicing

Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
RNA Splicing01:32

RNA Splicing

Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
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Cell Signaling in Plants

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...

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Bacterial Leaf Infiltration Assay for Fine Characterization of Plant Defense Responses using the Arabidopsis thaliana-Pseudomonas syringae Pathosystem
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Published on: October 1, 2015

Alternative splicing in plant defense.

W Gassmann1

  • 1Division of Plant Sciences, University of Missouri, Columbia, MO 65211-7310, USA. gassmannw@missouri.edu

Current Topics in Microbiology and Immunology
|July 18, 2008
PubMed
Summary
This summary is machine-generated.

Plant resistance (R) genes use alternative splicing to regulate R protein levels and function during pathogen defense. This dynamic process fine-tunes plant immunity and programmed cell death responses.

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Area of Science:

  • Plant immunity and molecular genetics
  • Plant-pathogen interactions
  • Molecular mechanisms of plant defense

Background:

  • Plant resistance proteins (R proteins) detect pathogen virulence factors, initiating plant immunity, often involving programmed host cell death.
  • R protein activation is tightly regulated due to potential detrimental effects on the plant.
  • Alternative splicing of resistance genes (R genes) is a known regulatory mechanism.

Purpose of the Study:

  • To discuss the role and regulation of alternative splicing in R genes.
  • To explore how alternative R gene transcripts influence defense activation and R protein expression.
  • To integrate alternative splicing into the current understanding of R protein-mediated plant defense.

Main Methods:

  • Review and discussion of existing literature on R gene alternative splicing.
  • Analysis of proposed mechanisms for regulating R gene alternative splicing.
  • Conceptual integration of alternative R gene transcripts into defense response models.

Main Results:

  • Alternative splicing can limit R protein expression or produce truncated R proteins that enhance defense.
  • Alternative splicing of R genes is a dynamic process during the plant defense response.
  • Specific mechanisms regulating R gene alternative splicing are proposed.

Conclusions:

  • Alternative splicing is a critical regulatory layer in plant immunity mediated by R proteins.
  • Understanding alternative R gene transcripts is essential for a comprehensive view of plant defense strategies.
  • Dynamic regulation via alternative splicing allows plants to fine-tune immune responses.