Hormones act downstream of TTG and GL2 to promote root hair outgrowth during epidermis development in the Arabidopsis root - PubMed (original) (raw)

Hormones act downstream of TTG and GL2 to promote root hair outgrowth during epidermis development in the Arabidopsis root

J D Masucci et al. Plant Cell. 1996 Sep.

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.

PubMed Disclaimer

Similar articles

• Auxin and ethylene promote root hair elongation in Arabidopsis.
  Pitts RJ, Cernac A, Estelle M. Pitts RJ, et al. Plant J. 1998 Dec;16(5):553-60. doi: 10.1046/j.1365-313x.1998.00321.x. Plant J. 1998. PMID: 10036773
• Genetic regulation of root hair development in Arabidopsis thaliana: a network model.
  Mendoza L, Alvarez-Buylla ER. Mendoza L, et al. J Theor Biol. 2000 Jun 7;204(3):311-26. doi: 10.1006/jtbi.2000.2014. J Theor Biol. 2000. PMID: 10816357
• Auxin and ethylene response interactions during Arabidopsis root hair development dissected by auxin influx modulators.
  Rahman A, Hosokawa S, Oono Y, Amakawa T, Goto N, Tsurumi S. Rahman A, et al. Plant Physiol. 2002 Dec;130(4):1908-17. doi: 10.1104/pp.010546. Plant Physiol. 2002. PMID: 12481073 Free PMC article.
• Cell fate in plants. Lessons from the Arabidopsis root.
  Dolan L, Linstead P, Kidner C, Boudonck K, Cao XF, Berger F. Dolan L, et al. Symp Soc Exp Biol. 1998;51:11-7. Symp Soc Exp Biol. 1998. PMID: 10645418 Review.
• Pathways for epidermal cell differentiation via the homeobox gene GLABRA2: update on the roles of the classic regulator.
  Lin Q, Aoyama T. Lin Q, et al. J Integr Plant Biol. 2012 Oct;54(10):729-37. doi: 10.1111/j.1744-7909.2012.01159.x. J Integr Plant Biol. 2012. PMID: 22943441 Review.

Cited by

• A biostimulant yeast, Hanseniaspora opuntiae, modifies Arabidopsis thaliana root architecture and improves the plant defense response against Botrytis cinerea.
  Maruri-López I, Romero-Contreras YJ, Napsucialy-Mendivil S, González-Pérez E, Aviles-Baltazar NY, Chávez-Martínez AI, Flores-Cuevas EJ, Schwan-Estrada KRF, Dubrovsky JG, Jiménez-Bremont JF, Serrano M. Maruri-López I, et al. Planta. 2024 Jan 31;259(3):53. doi: 10.1007/s00425-023-04326-6. Planta. 2024. PMID: 38294549 Free PMC article.
• Overexpression of AHL proteins enhances root hair production by altering the transcription of RHD6-downstream genes.
  Zeng Q, Song L, Xia M, Zheng Z, Chen Z, Che X, Liu D. Zeng Q, et al. Plant Direct. 2023 Aug 2;7(8):e517. doi: 10.1002/pld3.517. eCollection 2023 Aug. Plant Direct. 2023. PMID: 37577137 Free PMC article.
• Jasmonate-regulated root growth inhibition and root hair elongation.
  Han X, Kui M, He K, Yang M, Du J, Jiang Y, Hu Y. Han X, et al. J Exp Bot. 2023 Feb 13;74(4):1176-1185. doi: 10.1093/jxb/erac441. J Exp Bot. 2023. PMID: 36346644 Free PMC article. Review.
• Regulation of Phytohormones on the Growth and Development of Plant Root Hair.
  Li M, Zhu Y, Li S, Zhang W, Yin C, Lin Y. Li M, et al. Front Plant Sci. 2022 Mar 24;13:865302. doi: 10.3389/fpls.2022.865302. eCollection 2022. Front Plant Sci. 2022. PMID: 35401627 Free PMC article. Review.
• Comparative Transcriptome Analysis of Hard and Tender Fruit Spines of Cucumber to Identify Genes Involved in the Morphological Development of Fruit Spines.
  Lv D, Wang G, Zhang Q, Yu Y, Qin PC, Pang JA, Sun JX, Zhang KY, He HL, Cai R, Pan JS. Lv D, et al. Front Plant Sci. 2022 Mar 15;13:797433. doi: 10.3389/fpls.2022.797433. eCollection 2022. Front Plant Sci. 2022. PMID: 35371132 Free PMC article.

References

1. 1. Genes Dev. 1994 Jun 15;8(12):1388-99 - PubMed
2. 1. Plant Physiol. 1992 Sep;100(1):216-8 - PubMed
3. 1. Plant J. 1995 Oct;8(4):561-9 - PubMed
4. 1. J Gen Microbiol. 1985 Jun;131(6):1467-80 - PubMed
5. 1. Development. 1993 Sep;119(1):71-84 - PubMed

Publication types

MeSH terms

Substances

LinkOut - more resources

• Full Text Sources

  • PubMed Central
  • Silverchair Information Systems

• Other Literature Sources

  • The Lens - Patent Citations

• Molecular Biology Databases

  • The Arabidopsis Information Resource

• Research Materials

  • NCI CPTC Antibody Characterization Program