@article{kiefer_arabidopsis_2015,
	title = {Arabidopsis {AIP1}-2 restricted by {WER}-mediated patterning modulates planar polarity},
	volume = {142},
	issn = {1477-9129 (Electronic) 0950-1991 (Linking)},
	url = {https://www.ncbi.nlm.nih.gov/pubmed/25428588},
	doi = {10.1242/dev.111013},
	abstract = {The coordination of cell polarity within the plane of the tissue layer (planar polarity) is crucial for the development of diverse multicellular organisms. Small Rac/Rho-family GTPases and the actin cytoskeleton contribute to planar polarity formation at sites of polarity establishment in animals and plants. Yet, upstream pathways coordinating planar polarity differ strikingly between kingdoms. In the root of Arabidopsis thaliana, a concentration gradient of the phytohormone auxin coordinates polar recruitment of Rho-of-plant (ROP) to sites of polar epidermal hair initiation. However, little is known about cytoskeletal components and interactions that contribute to this planar polarity or about their relation to the patterning machinery. Here, we show that ACTIN7 (ACT7) represents a main actin isoform required for planar polarity of root hair positioning, interacting with the negative modulator ACTIN-INTERACTING PROTEIN1-2 (AIP1-2). ACT7, AIP1-2 and their genetic interaction are required for coordinated planar polarity of ROP downstream of ethylene signalling. Strikingly, AIP1-2 displays hair cell file-enriched expression, restricted by WEREWOLF (WER)-dependent patterning and modified by ethylene and auxin action. Hence, our findings reveal AIP1-2, expressed under control of the WER-dependent patterning machinery and the ethylene signalling pathway, as a modulator of actin-mediated planar polarity.},
	number = {1},
	urldate = {2021-06-07},
	journal = {Development},
	author = {Kiefer, C. S. and Claes, A. R. and Nzayisenga, J. C. and Pietra, S. and Stanislas, T. and Huser, A. and Ikeda, Y. and Grebe, M.},
	month = jan,
	year = {2015},
	note = {Edition: 2014/11/28},
	keywords = {*Body Patterning, *Cell Polarity, Actin, Actins/metabolism, Aip1, Arabidopsis, Arabidopsis Proteins/*metabolism, Arabidopsis/*cytology/*embryology, Carrier Proteins/*metabolism, DNA-Binding Proteins/*metabolism, Epistasis, Genetic, Ethylenes/metabolism, Patterning, Planar polarity, Plant Roots/metabolism, Protein Binding, Saccharomyces cerevisiae/metabolism, Signal Transduction, Werewolf},
	pages = {151--61},
}

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Yet, upstream pathways coordinating planar polarity differ strikingly between kingdoms. In the root of Arabidopsis thaliana, a concentration gradient of the phytohormone auxin coordinates polar recruitment of Rho-of-plant (ROP) to sites of polar epidermal hair initiation. However, little is known about cytoskeletal components and interactions that contribute to this planar polarity or about their relation to the patterning machinery. Here, we show that ACTIN7 (ACT7) represents a main actin isoform required for planar polarity of root hair positioning, interacting with the negative modulator ACTIN-INTERACTING PROTEIN1-2 (AIP1-2). ACT7, AIP1-2 and their genetic interaction are required for coordinated planar polarity of ROP downstream of ethylene signalling. Strikingly, AIP1-2 displays hair cell file-enriched expression, restricted by WEREWOLF (WER)-dependent patterning and modified by ethylene and auxin action. Hence, our findings reveal AIP1-2, expressed under control of the WER-dependent patterning machinery and the ethylene signalling pathway, as a modulator of actin-mediated planar polarity.","number":"1","urldate":"2021-06-07","journal":"Development","author":[{"propositions":[],"lastnames":["Kiefer"],"firstnames":["C.","S."],"suffixes":[]},{"propositions":[],"lastnames":["Claes"],"firstnames":["A.","R."],"suffixes":[]},{"propositions":[],"lastnames":["Nzayisenga"],"firstnames":["J.","C."],"suffixes":[]},{"propositions":[],"lastnames":["Pietra"],"firstnames":["S."],"suffixes":[]},{"propositions":[],"lastnames":["Stanislas"],"firstnames":["T."],"suffixes":[]},{"propositions":[],"lastnames":["Huser"],"firstnames":["A."],"suffixes":[]},{"propositions":[],"lastnames":["Ikeda"],"firstnames":["Y."],"suffixes":[]},{"propositions":[],"lastnames":["Grebe"],"firstnames":["M."],"suffixes":[]}],"month":"January","year":"2015","note":"Edition: 2014/11/28","keywords":"*Body Patterning, *Cell Polarity, Actin, Actins/metabolism, Aip1, Arabidopsis, Arabidopsis Proteins/*metabolism, Arabidopsis/*cytology/*embryology, Carrier Proteins/*metabolism, DNA-Binding Proteins/*metabolism, Epistasis, Genetic, Ethylenes/metabolism, Patterning, Planar polarity, Plant Roots/metabolism, Protein Binding, Saccharomyces cerevisiae/metabolism, Signal Transduction, Werewolf","pages":"151–61","bibtex":"@article{kiefer_arabidopsis_2015,\n\ttitle = {Arabidopsis {AIP1}-2 restricted by {WER}-mediated patterning modulates planar polarity},\n\tvolume = {142},\n\tissn = {1477-9129 (Electronic) 0950-1991 (Linking)},\n\turl = {https://www.ncbi.nlm.nih.gov/pubmed/25428588},\n\tdoi = {10.1242/dev.111013},\n\tabstract = {The coordination of cell polarity within the plane of the tissue layer (planar polarity) is crucial for the development of diverse multicellular organisms. Small Rac/Rho-family GTPases and the actin cytoskeleton contribute to planar polarity formation at sites of polarity establishment in animals and plants. Yet, upstream pathways coordinating planar polarity differ strikingly between kingdoms. In the root of Arabidopsis thaliana, a concentration gradient of the phytohormone auxin coordinates polar recruitment of Rho-of-plant (ROP) to sites of polar epidermal hair initiation. However, little is known about cytoskeletal components and interactions that contribute to this planar polarity or about their relation to the patterning machinery. Here, we show that ACTIN7 (ACT7) represents a main actin isoform required for planar polarity of root hair positioning, interacting with the negative modulator ACTIN-INTERACTING PROTEIN1-2 (AIP1-2). ACT7, AIP1-2 and their genetic interaction are required for coordinated planar polarity of ROP downstream of ethylene signalling. Strikingly, AIP1-2 displays hair cell file-enriched expression, restricted by WEREWOLF (WER)-dependent patterning and modified by ethylene and auxin action. Hence, our findings reveal AIP1-2, expressed under control of the WER-dependent patterning machinery and the ethylene signalling pathway, as a modulator of actin-mediated planar polarity.},\n\tnumber = {1},\n\turldate = {2021-06-07},\n\tjournal = {Development},\n\tauthor = {Kiefer, C. S. and Claes, A. R. and Nzayisenga, J. 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