Differential Accumulation and Degradation of Anthocyanins in Red Norland Periderm is Dependent on Soil Type and Tuber Storage Duration

Mikel R. Roe, Justin L. Carlson, Theresa M. McManimon, Adrian D. Hegeman, Cindy B.S. Tong

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

To determine how soil type, 2,4-dichlorophenoxyacetic acid (2,4-D) treatment, and storage affects color and anthocyanin accumulation of Red Norland potatoes, tubers were grown in sand or peat, with or without 2,4-D treatment, and measured at vine kill, harvest or after storage. Tubers grown in sand were less red and accumulated fewer anthocyanins than tubers grown in peat. 2,4-D treatment increased redness regardless of soil type. Redness loss varied greatly among tubers with storage. Tubers that lost color with storage had a two-fold reduction in anthocyanins, and a two-fold increase in benzoic and cinnamic acids compared to harvest, indicating chemical degradation of anthocyanidins via B-ring cleavage and autoxidation. Sand-grown potatoes did not exhibit greater cinnamic acids compared to peat-grown potatoes, suggesting that their color differences were due more to differences in biosynthesis than degradation during skin set. To improve Red Norland tuber color, research should focus on increasing biosynthesis of anthocyanins.

Original languageEnglish (US)
Pages (from-to)696-705
Number of pages10
JournalAmerican Journal of Potato Research
Volume91
Issue number6
DOIs
StatePublished - Jun 1 2014

Bibliographical note

Funding Information:
Acknowledgments The authors thank Nik Prenevost for greenhouse assistance, Carl Rosen for scientific discussion, and the Minnesota Experiment Station and University of Minnesota Undergraduate Research Opportunities Program for funding. ADH and MRR also thank the U.S. National Science Foundation, Plant Genome Program, grant IOS-0923960 for support.

Publisher Copyright:
© 2014 The Potato Association of America.

Keywords

  • Chroma
  • Hue Angle
  • Lightness
  • Red Coloration
  • Storage

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