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Ethylene is a positive regulator of root hair development in Arabidopsis thaliana
Author(s) -
Tanimoto Mimi,
Roberts Keith,
Dolan Liam
Publication year - 1995
Publication title -
the plant journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.058
H-Index - 269
eISSN - 1365-313X
pISSN - 0960-7412
DOI - 10.1046/j.1365-313x.1995.8060943.x
Subject(s) - arabidopsis thaliana , ethylene , arabidopsis , epidermis (zoology) , regulator , root hair , microbiology and biotechnology , biology , botany , chemistry , biochemistry , anatomy , mutant , gene , catalysis
Summary Evidence is provided that ethylene is a positive regulator of hair cell development in the root epidermis of Arabidopsis thaliana . Treatment of seedlings with increasing concentrations of the ethylene precursor, 1‐aminocyclopropane‐1‐carboxylic acid (ACC) results in progressively more root hair cells developing in positions normally occupied by non‐hair cells. Consistent with these findings are observations that treatments that block either ethylene synthesis or its perception reduce the number of root hairs. A model is proposed in which either ethylene or ACC is a signal involved in specifying the pattern of cell differentiation in the Arabidopsis root epidermis.