root hair deformation

[Claire Grierson]

Dear Baio,

There are at least seventeen genetic loci involved in root-hair development of
which seven are published. I am currently writing up the others. Known genes
affect the number and location of initiation events, the size of initiation
sites, and the shape of root hairs formed during tip growth.

The existing literature includes:

Schiefelbein JW, Somerville C (1990) Genetic control of root hair development
in Arabidopsis thaliana. Plant Cell 2: 235-243

Schiefelbein J, Galway M, Masucci J, Ford S (1993) Pollen-tube and root-hair
tip growth is disrupted in a mutant of Arabidopsis thaliana. Plant Physiol
103: 979-985

Masucci JD, Schiefelbein JW (1994)The rhd6 mutation of Arabidopsis thaliana
alters root-hair initiation through an auxin-associated and
ethylene-associated process. Plant Physiol 106: 1335-1346

Grierson CS, Roberts K, Feldmann KA & Dolan L (1997) 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. Plant Physiology 115:981-990

 Ryan E, Grierson CS, Cavell A, Steer M & Dolan L (1998) TIP1 is required for
both tip growth and non-tip growth in Arabidopsis. New Phytologist 138:49-58

Also various abstracts:
Grierson CS, Parker J, Cavell A, Maseres-Ghiloni L, Freedman M, Roberts K, and
Dolan L (1998) Genetics of root-hair development in Arabidopsis thaliana.
Journal of Experimental Botany 49(S):20
Grierson CS, Parker J, Roberts K & Dolan L (1997) Genetics of root hair
development in Arabidopsis thaliana. Journal of Experimental Botany 48(S):66

And from the annual Arabidopsis conferences on the www at:
http://genome-www.stanford.edu/Arabidopsis/madison98/absquery.html
http://genome-www.stanford.edu/Arabidopsis/madison97/AT-at97absquery.html

You can also check out my lab's web site at:
http://www.lars.bbsrc.ac.uk/cellbiol/devbio/cow1.html

Hope this helps.

Claire
--------------------------------
Claire.Grierson at bbsrc.ac.uk
IACR-Long Ashton Research Station
Long Ashton
Bristol
BS41 9AF
UK
Tel: +44 (0)1275 549417
Fax: +44 (0)1275 394281