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Cells differentiate from undifferentiated precursors in order to establish the tissues of vascular plants. The different cell types and stem cells are first specified in the early embryo. How cell type specification is instructed by transcriptional control on a genome-wide level is poorly understood. A major hurdle has been the technical challenge associated with obtaining cellular transcriptomes in this inaccessible tissue. Recently, we adapted a two-component genetic labeling system called INTACT to isolate nuclei and generate a microarray-based expression atlas of the cell types in the early Arabidopsis thaliana embryo. Here we present a step-by-step description of the adapted INTACT protocol, as well as the approach to generate transcriptomic profiles. This protocol has been adapted to account for using seeds with embryos of various developmental stages as a starting material, and the relatively few cell type-specific nuclei that can be isolated from embryos.
|Title of host publication||Plant Embryogenesis|
|Subtitle of host publication||Methods and Protocols|
|Place of Publication||New York|
|Publisher||Humana Press Inc.|
|Number of pages||10|
|Publication status||Published - 24 Jan 2020|
|Name||Methods in Molecular Biology|
- Cell type-specific
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