• The root epidermis of most angiosperms comprises hair (H) cells and nonhair (N) cells. H cells are shorter than N cells in grasses (Poaceae). • The aim of this study was to determine the developmental basis for differences in H and N cell size in the grasses Brachypodium distachyon and Oryza sativa. • We show that cytokinesis in the last cell division in each epidermal file is asymmetric in B. distachyon. The smaller daughter cell becomes an H cell and the larger cell forms an N cell. By co...Expand abstract
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Root hair development involves asymmetric cell division in Brachypodium distachyon and symmetric division in Oryza sativa.
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