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SYBR green-activated sorting of Arabidopsis pollen nuclei based on different DNA/RNA content

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journal contribution
posted on 16.02.2015, 14:36 by V. Schoft, N. Chumak, J. Bindics, L. Slusarz, David Twell, C. Kohler
Germ cell epigenetics is a critical topic in plants and animals. The male gametophyte (pollen) of flowering plants is an attractive model in which to study genetic and epigenetic reprogramming during sexual reproduction, being composed of only two sperm cells contained within, its companion, vegetative cell. Here we describe a simple and efficient method to purify SYBR green stained sperm and vegetative cell nuclei of Arabidopsis thaliana pollen using fluorescence activated cell sorting (FACS) to analyze chromatin and RNA profiles. The method obviates generating transgenic lines expressing cell type-specific fluorescence reporters and facilitates functional genomic analysis of various mutant lines and accessions. We evaluate the purity and 2 quality of the sorted pollen nuclei and analyze the technique’s molecular basis. Our results show that both DNA and RNA contents contribute to SYBR green activated nucleus sorting and RNA content differences impact on the separation of sperm and vegetative cell nuclei. We demonstrate the power of the approach by sorting wild-type and polyploid mutant sperm and vegetative cell nuclei from mitotic and meiotic mutants, which is not feasible using cell typespecific transgenic reporters. Our approach should be applicable to pollen nuclei of crop plants and possibly to cell/nucleus types and cell cycle phases of different species containing substantially different amounts of DNA and/or RNA.

Funding

This work was supported by Austrian Science Fund (FWF) Grants P21389-B03 and P24918-B21 (to H.T.).

History

Citation

Plant Reproduction 2015

Author affiliation

/Organisation/COLLEGE OF MEDICINE, BIOLOGICAL SCIENCES AND PSYCHOLOGY/School of Biological Sciences/Department of Biology

Version

AM (Accepted Manuscript)

Published in

Plant Reproduction 2015

Publisher

Springer Verlag (Germany) for Springer Berlin Heidelberg

issn

2194-7953

eissn

2194-7961

Copyright date

1007

Available date

13/02/2016

Publisher version

http://link.springer.com/article/10.1007/s00497-015-0258-2

Editors

Weijers, D.

Language

en