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Detection of Alternative Splicing During Epithelial-Mesenchymal Transition
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Perspective on Alternative Splicing and Proteome Complexity in Plants.

Saurabh Chaudhary1, Ibtissam Jabre1, Anireddy S N Reddy2

  • 1School of Human and Life Sciences, Canterbury Christ Church University, Canterbury, CT1 1QU, UK; These authors contributed equally to this work.

Trends in Plant Science
|March 11, 2019
PubMed
Summary

Alternative splicing (AS) in plants generates diverse proteins, potentially reducing metabolic costs under stress. This process may also create stress memory for future responses.

Keywords:
IDPsalternative splicingprotein diversitystress memorytranslational coincidence

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Area of Science:

  • Plant molecular biology
  • Genomics
  • Biochemistry

Background:

  • Alternative splicing (AS) increases proteome diversity from a single gene.
  • The role and metabolic implications of AS in plants, especially under stress, are not fully understood.
  • Plants face energy limitations during stress, making high protein synthesis counterintuitive.

Purpose of the Study:

  • To investigate the contribution of AS to proteome complexity in plants.
  • To explore the hypothesis that plants use AS to buffer against stress-induced transcriptome changes and reduce metabolic costs.
  • To examine how AS influences protein structure and function under stress and its potential role in stress memory.

Main Methods:

  • Analysis of alternative splicing patterns in plant transcriptomes under various stress conditions.
  • Bioinformatic approaches to predict protein structures and functions arising from AS variants.
  • Investigating the link between chromatin states and AS regulation in response to stress.

Main Results:

  • AS is widespread in plants and significantly increases under stress.
  • AS variants may lead to proteins with fewer disordered domains, enhancing substrate specificity and regulatory capacity.
  • Evidence suggests AS contributes to metabolic efficiency by reducing the translation of non-essential transcripts under stress.
  • Chromatin state-dependent AS is proposed as a mechanism for establishing stress memory.

Conclusions:

  • Alternative splicing in plants serves dual roles: increasing proteomic diversity and optimizing metabolic efficiency under stress.
  • AS-mediated changes in protein domains are crucial for maintaining function and regulatory control during stress.
  • Chromatin-mediated AS provides a mechanism for plants to remember and reproducibly respond to environmental stress.