Skip to main content
NCBI home page
Plant Physiology logoLink to Plant Physiology
. 1997 Nov;115(3):981–990. doi: 10.1104/pp.115.3.981

The COW1 locus of arabidopsis acts after RHD2, and in parallel with RHD3 and TIP1, to determine the shape, rate of elongation, and number of root hairs produced from each site of hair formation.

C S Grierson 1, K Roberts 1, K A Feldmann 1, L Dolan 1
PMCID: PMC158561  PMID: 9390433

Abstract

Two recessive mutant alleles at CAN OF WORMS1 (COW1), a new locus involved in root hair morphogenesis, have been identified in Arabidopsis thaliana L. Heynh. Root hairs on Cow1- mutants are short and wide and occasionally formed as pairs at a single site of hair formation. The COW1 locus maps to chromosome 4. Root hairs on Cow1- plants form in the usual positions, suggesting that the phenotype is not the result of abnormal positional signals. Root hairs on Cow1- roots begin hair formation normally, forming a small bulge, or root hair initiation site, of normal size and shape and in the usual position on the hair-forming cell. However, when Cow1- root hairs start to elongate by tip growth, abnormalities in the shape and elongation rate of the hairs become apparent. Genetic evidence from double-mutant analysis of cow1-1 and other loci involved in root hair development supports our conclusion that COW1 is required during root hair elongation.

Full Text

The Full Text of this article is available as a PDF (2.5 MB).

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Adler P. N. The genetic control of tissue polarity in Drosophila. Bioessays. 1992 Nov;14(11):735–741. doi: 10.1002/bies.950141103. [DOI] [PubMed] [Google Scholar]
  2. Cernac A., Lincoln C., Lammer D., Estelle M. The SAR1 gene of Arabidopsis acts downstream of the AXR1 gene in auxin response. Development. 1997 Apr;124(8):1583–1591. doi: 10.1242/dev.124.8.1583. [DOI] [PubMed] [Google Scholar]
  3. Di Cristina M., Sessa G., Dolan L., Linstead P., Baima S., Ruberti I., Morelli G. The Arabidopsis Athb-10 (GLABRA2) is an HD-Zip protein required for regulation of root hair development. Plant J. 1996 Sep;10(3):393–402. doi: 10.1046/j.1365-313x.1996.10030393.x. [DOI] [PubMed] [Google Scholar]
  4. Dolan L., Janmaat K., Willemsen V., Linstead P., Poethig S., Roberts K., Scheres B. Cellular organisation of the Arabidopsis thaliana root. Development. 1993 Sep;119(1):71–84. doi: 10.1242/dev.119.1.71. [DOI] [PubMed] [Google Scholar]
  5. Feldmann K. A., Marks M. D., Christianson M. L., Quatrano R. S. A Dwarf Mutant of Arabidopsis Generated by T-DNA Insertion Mutagenesis. Science. 1989 Mar 10;243(4896):1351–1354. doi: 10.1126/science.243.4896.1351. [DOI] [PubMed] [Google Scholar]
  6. Galway M. E., Heckman J. W., Jr, Schiefelbein J. W. Growth and ultrastructure of Arabidopsis root hairs: the rhd3 mutation alters vacuole enlargement and tip growth. Planta. 1997;201(2):209–218. doi: 10.1007/BF01007706. [DOI] [PubMed] [Google Scholar]
  7. Galway M. E., Masucci J. D., Lloyd A. M., Walbot V., Davis R. W., Schiefelbein J. W. The TTG gene is required to specify epidermal cell fate and cell patterning in the Arabidopsis root. Dev Biol. 1994 Dec;166(2):740–754. doi: 10.1006/dbio.1994.1352. [DOI] [PubMed] [Google Scholar]
  8. Hülskamp M., Misŕa S., Jürgens G. Genetic dissection of trichome cell development in Arabidopsis. Cell. 1994 Feb 11;76(3):555–566. doi: 10.1016/0092-8674(94)90118-x. [DOI] [PubMed] [Google Scholar]
  9. Kohno T., Shimmen T. Accelerated sliding of pollen tube organelles along Characeae actin bundles regulated by Ca2+. J Cell Biol. 1988 May;106(5):1539–1543. doi: 10.1083/jcb.106.5.1539. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Konieczny A., Ausubel F. M. A procedure for mapping Arabidopsis mutations using co-dominant ecotype-specific PCR-based markers. Plant J. 1993 Aug;4(2):403–410. doi: 10.1046/j.1365-313x.1993.04020403.x. [DOI] [PubMed] [Google Scholar]
  11. Kron S. J., Gow N. A. Budding yeast morphogenesis: signalling, cytoskeleton and cell cycle. Curr Opin Cell Biol. 1995 Dec;7(6):845–855. doi: 10.1016/0955-0674(95)80069-7. [DOI] [PubMed] [Google Scholar]
  12. Lander E. S., Green P., Abrahamson J., Barlow A., Daly M. J., Lincoln S. E., Newberg L. A., Newburg L. MAPMAKER: an interactive computer package for constructing primary genetic linkage maps of experimental and natural populations. Genomics. 1987 Oct;1(2):174–181. doi: 10.1016/0888-7543(87)90010-3. [DOI] [PubMed] [Google Scholar]
  13. Leyser H. M., Pickett F. B., Dharmasiri S., Estelle M. Mutations in the AXR3 gene of Arabidopsis result in altered auxin response including ectopic expression from the SAUR-AC1 promoter. Plant J. 1996 Sep;10(3):403–413. doi: 10.1046/j.1365-313x.1996.10030403.x. [DOI] [PubMed] [Google Scholar]
  14. Masucci J. D., Schiefelbein J. W. Hormones act downstream of TTG and GL2 to promote root hair outgrowth during epidermis development in the Arabidopsis root. Plant Cell. 1996 Sep;8(9):1505–1517. doi: 10.1105/tpc.8.9.1505. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Schiefelbein J. W., Somerville C. Genetic Control of Root Hair Development in Arabidopsis thaliana. Plant Cell. 1990 Mar;2(3):235–243. doi: 10.1105/tpc.2.3.235. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Schiefelbein J., Galway M., Masucci J., Ford S. Pollen tube and root-hair tip growth is disrupted in a mutant of Arabidopsis thaliana. Plant Physiol. 1993 Nov;103(3):979–985. doi: 10.1104/pp.103.3.979. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Schnall J. A., Quatrano R. S. Abscisic Acid Elicits the Water-Stress Response in Root Hairs of Arabidopsis thaliana. Plant Physiol. 1992 Sep;100(1):216–218. doi: 10.1104/pp.100.1.216. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. Wilson A. K., Pickett F. B., Turner J. C., Estelle M. A dominant mutation in Arabidopsis confers resistance to auxin, ethylene and abscisic acid. Mol Gen Genet. 1990 Jul;222(2-3):377–383. doi: 10.1007/BF00633843. [DOI] [PubMed] [Google Scholar]
  19. Wong L. L., Adler P. N. Tissue polarity genes of Drosophila regulate the subcellular location for prehair initiation in pupal wing cells. J Cell Biol. 1993 Oct;123(1):209–221. doi: 10.1083/jcb.123.1.209. [DOI] [PMC free article] [PubMed] [Google Scholar]

Articles from Plant Physiology are provided here courtesy of Oxford University Press

RESOURCES