Modulation of Carotenoid Accumulation in Transgenic Potato by Inducing Chromoplast Formation with Enhanced Sink Strength

  • Joyce Van Eck
  • Xiangjun Zhou
  • Shan Lu
  • Li Li
Part of the Methods in Molecular Biology book series (MIMB, volume 643)


An increasing interest in carotenoids as nutritional sources of provitamin A and health-promoting compounds has prompted a significant effort in metabolic engineering of carotenoid content and composition in food crops. The strategy commonly used in plants is to increase the biosynthetic capacity by altering the carotenogenic enzyme activities. The recent isolation of the Or gene from a cauliflower orange mutant has brought a new endeavor for carotenoid enhancement by increasing the sink strength to sequester and store the synthesized carotenoids. Potato as one of the major staple crops usually accumulates low levels of carotenoids. In this chapter, we describe a detailed protocol for metabolic engineering of carotenoids in potato plants with the Or gene and the analysis of the Or transformants.

Key words

Cauliflower Or gene carotenoids chromoplasts transgenic potato sink strength 



The authors are grateful to many colleagues for their contribution to this research. This work was supported by the Triad Foundation, the National Natural Science Foundation of China (No. 30771167), and the USDA National Research Initiative Grants.


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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Joyce Van Eck
    • 1
  • Xiangjun Zhou
    • 2
  • Shan Lu
    • 3
  • Li Li
    • 4
    • 5
  1. 1.Thompson Institute for Plant ResearchCornell UniversityIthacaUSA
  2. 2.US Department of Agriculture-Agricultural Research Service, Robert W. Holley Center for Agriculture and Health, Department of Plant Breeding and GeneticsCornell UniversityIthacaUSA
  3. 3.State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina
  4. 4.US Department of Agriculture-Agricultural Research Service, Robert W. Holley Center for Agriculture and HealthCornell UniversityIthacaUSA
  5. 5.Department of Plant Breeding and GeneticsCornell UniversityIthacaUSA

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