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The Application of Flow Cytometry for Estimating Genome Size and Ploidy Level in Plants

  • Jaume Pellicer
  • Ilia J. Leitch
Protocol
Part of the Methods in Molecular Biology book series (MIMB, volume 1115)

Abstract

Over the years, the amount of DNA in a nucleus (genome size) has been estimated using a variety of methods, but increasingly, flow cytometry (FCM) has become the method of choice. The popularity of this technique lies in the ease of sample preparation and in the large number of particles (i.e., nuclei) that can be analyzed in a very short period of time. This chapter presents a step-by-step guide to estimating the nuclear DNA content of plant nuclei using FCM. Attempting to serve as a tool for daily laboratory practice, we list, in detail, the equipment required, specific reagents, and buffers needed, as well as the most frequently used protocols to carry out nuclei isolation. In addition, solutions to the most common problems that users may encounter when working with plant material and troubleshooting advice are provided. Finally, information about the correct terminology to use and the importance of obtaining chromosome counts to avoid cytological misinterpretations of the FCM data are discussed.

Key words

Chromosome number DAPI DNA ploidy level Genome size Flow cytometry Flow histogram C-value PI Plant nuclei isolation Relative fluorescence 

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Copyright information

© Springer New York 2014

Authors and Affiliations

  • Jaume Pellicer
    • 1
  • Ilia J. Leitch
    • 1
  1. 1.Jodrell LaboratoryRoyal Botanic GardensSurreyUK

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