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Targeted Proteomics Approach for Precision Plant Breeding.

Aakash Chawade1, Erik Alexandersson2, Therese Bengtsson2

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This study introduces a new protein biomarker panel for potato breeding using targeted proteomics. This approach can predict important traits like disease resistance and yield, accelerating crop improvement.

Keywords:
MASPASS00692SRMSolanum tuberosumbreedingmarker assisted selectionpotatoproteomicssecretomeselected reaction monitoring

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Area of Science:

  • Proteomics
  • Plant Breeding
  • Mass Spectrometry

Background:

  • DNA markers are standard in plant breeding, but protein biomarkers offer untapped potential.
  • Selected reaction monitoring (SRM) enables precise, multiplexed protein quantitation.

Purpose of the Study:

  • To develop an SRM marker panel for potato (Solanum tuberosum) peptides.
  • To identify protein markers for Phytophthora infestans resistance and plant yield.
  • To demonstrate the utility of targeted proteomics in accelerated breeding.

Main Methods:

  • Developed an SRM assay panel for 104 potato peptides using statistical selection.
  • Employed random forest classification on leaf secretome samples.
  • Validated the marker panel on independent potato clones.

Main Results:

  • The SRM panel successfully predicted Phytophthora infestans resistance (leaves and tubers) and plant yield.
  • Two of the three evaluated traits lacked existing commercial DNA markers.
  • The panel showed applicability to novel potato clones, indicating robustness.

Conclusions:

  • Targeted proteomics using SRM is a viable strategy for identifying predictive markers for complex traits in potato.
  • This approach can accelerate breeding programs, especially for traits with no current DNA markers.
  • The developed workflow serves as a proof-of-concept for efficient, protein-based crop improvement.