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Related Experiment Videos

Ultrastructural Changes in Potato Tuber Pith Cells during Brown Center Development.

R W Van Denburgh1, L K Hiller, D C Koller

  • 1Department of Horticulture and Landscape Architecture, Washington State University, Pullman, Washington 99164-6414.

Plant Physiology
|May 1, 1986
PubMed
Summary

Cool temperatures damage potato tuber cells over time. Extended cool conditions (18°C days/10°C nights) cause cell damage, starch hydrolysis, and brown center development in

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Area of Science:

  • Plant Science
  • Cell Biology
  • Agricultural Science

Background:

  • Potato (Solanum tuberosum L.) is a globally significant crop.
  • Understanding cellular responses to environmental stress is crucial for crop yield and quality.

Purpose of the Study:

  • To investigate the cellular effects of cool temperature stress on 'Russet Burbank' potato tuber pith.
  • To determine the duration of cool temperature exposure required to induce visible damage and cellular alterations.

Main Methods:

  • Electron microscopy was used to examine tuber pith tissue.
  • Potato plants were subjected to controlled cool (18°C days/10°C nights) and warm (23°C days/18°C nights) growing conditions.

Main Results:

  • No visible damage was observed after 2 days of cool treatment.

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  • Significant cell damage, including cytoplasmic vesiculation and destruction of amyloplast and tonoplast membranes, occurred after 8 days.
  • Visible brown center development and extensive cellular disruption were evident after 16 days of cool treatment.

    • Conclusions:

    • Prolonged cool temperatures induce progressive cellular damage in potato tubers.
    • The observed cellular changes, including starch hydrolysis and membrane degradation, disrupt normal tuber function.
    • Cool temperature stress significantly impacts potato tuber quality and integrity.