Hormones act downstream of TTG and GL2 to promote root hair outgrowth during epidermis development in the Arabidopsis root. (original) (raw)
Journal Article
,
Department of Biology, University of Michigan, Ann Arbor 48109-1048, USA.
Search for other works by this author on:
Department of Biology, University of Michigan, Ann Arbor 48109-1048, USA.
Search for other works by this author on:
Published:
01 September 1996
Cite
J D Masucci, J W Schiefelbein, Hormones act downstream of TTG and GL2 to promote root hair outgrowth during epidermis development in the Arabidopsis root., The Plant Cell, Volume 8, Issue 9, September 1996, Pages 1505–1517, https://doi.org/10.1105/tpc.8.9.1505
Close
Navbar Search Filter Mobile Enter search term Search
Abstract
The Arabidopsis root produces a position-dependent pattern of hair-bearing and hairless cell types during epidermis development. Five loci (TRANSPARENT TESTA GLABRA [TTG], GLABRA2 [GL2], ROOT HAIR DEFECTIVE6 [RHD6], CONSTITUTIVE TRIPLE RESPONSE1 [CTR1], and AUXIN RESISTANT2 [AXR2]) and the plant hormones ethylene and auxin have been reported to affect the production of root hair and hairless cells in the Arabidopsis root. In this study, genetic, molecular, and physiological tests were employed to define the roles of these loci and hormones. Epistasis tests and reporter gene studies indicated that the hairless cell-promoting genes TTG and GL2 are likely to act early to negatively regulate the ethylene and auxin pathways. Studies of the developmental timing of the hormone effects indicated that ethylene and auxin pathways promote root hair outgrowth after cell-type differentiation has been initiated. The genetic analysis of ethylene-and auxin-related mutations showed that root hair formation is influenced by a network of hormone pathways, including a partially redundant ethylene signaling pathway. A model is proposed in which the patterning of root epidermal cells in Arabidopsis is regulated by the cell position-dependent action of the TTG/GL2 pathway, and the ethylene and auxin hormone pathways act to promote root hair outgrowth at a relatively late stage of differentiation.
This content is only available as a PDF.
© 1996 by American Society of Plant Biologists
This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open\_access/funder\_policies/chorus/standard\_publication\_model)
Citations
Views
Altmetric
Metrics
Total Views 462
0 Pageviews
462 PDF Downloads
Since 2/1/2021
Month: | Total Views: |
---|---|
February 2021 | 2 |
March 2021 | 11 |
April 2021 | 4 |
May 2021 | 6 |
June 2021 | 10 |
July 2021 | 9 |
August 2021 | 6 |
September 2021 | 10 |
October 2021 | 17 |
November 2021 | 10 |
December 2021 | 8 |
January 2022 | 11 |
February 2022 | 15 |
March 2022 | 15 |
April 2022 | 15 |
May 2022 | 18 |
June 2022 | 6 |
July 2022 | 18 |
August 2022 | 3 |
September 2022 | 18 |
October 2022 | 14 |
November 2022 | 10 |
December 2022 | 17 |
January 2023 | 9 |
February 2023 | 10 |
March 2023 | 13 |
April 2023 | 10 |
May 2023 | 9 |
June 2023 | 10 |
August 2023 | 5 |
September 2023 | 9 |
October 2023 | 12 |
November 2023 | 13 |
December 2023 | 8 |
January 2024 | 8 |
February 2024 | 11 |
March 2024 | 16 |
April 2024 | 22 |
May 2024 | 10 |
June 2024 | 8 |
July 2024 | 3 |
August 2024 | 7 |
September 2024 | 5 |
October 2024 | 11 |
Citations
270 Web of Science
×
Email alerts
Citing articles via
More from Oxford Academic