Plant Physiol. Illumina
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Web of Science (15)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Nagata, T.
Right arrow Articles by Kikuchi, S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Nagata, T.
Right arrow Articles by Kikuchi, S.
Agricola
Right arrow Articles by Nagata, T.
Right arrow Articles by Kikuchi, S.

gamma -Radiation Induces Leaf Trichome Formation in Arabidopsis1

Toshifumi Nagata, Setsuko Todoriki, Toru Hayashi, Yuriko Shibata, Masaki Mori, Hiromi Kanegae, and Shoshi Kikuchi*

Japan Science and Technology Corporation, 2-1-2 Kannnon-dai, Tsukuba Ibaraki 305-8602, Japan (T.N.); National Food Research Institute, 2-1-2 Kannnon-dai, Tsukuba Ibaraki 305-8642, Japan (S.T., T.H.); University of Tsukuba, 1-1-1 Tennnou-dai, Tsukuba Ibaraki 305-8572, Japan (Y.S.); and National Institute of Agrobiological Resources, 2-1-2 Kannnon-dai, Tsukuba Ibaraki 305-8602, Japan (M.M., H.K., S.K.)

We observed induction of additional trichome formation on the adaxial surface of mature leaves of Arabidopsis after massive doses (1-3 kilograys) of gamma -radiation from cobalt-60. A typical increase in trichome number was observed in the seventh leaf when the full expansion of the fifth leaf was irradiated. Under normal growth conditions, trichome numbers on the adaxial surface of seventh leaf of the Arabidopsis ecotypes Columbia (Col) and Landsberg erecta (Ler) were 122.5 ± 22.7 and 57.5 ± 14.5, respectively. However, gamma -radiation induced additional trichome formation and the numbers rose to 207.9 ± 43.7 and 95.0 ± 27.1 in Col and Ler, respectively. In Col the shape of new trichomes was intact and their formation was spatially maintained at equal distances from other trichomes. In Ler trichome morphology was aberrant and the formation was relatively random. Treatment with antioxidants before gamma -irradiation suppressed the increase in trichome number, and treatment with methyl viologen and light induced small trichomes. These results suggest that gamma -radiation-induced trichome formation is mediated by active oxygen species generated by water radiolysis. gamma -Radiation-induced trichome formation was blocked in the trichome mutants ttg-1, gl1-1, and gl2-1. These results suggest that gamma -radiation-induced trichome formation is mediated by the normal trichome developmental pathway.

1   This study was supported by a grant from the Regional Links Research Program at Nagasaki of Japan Science and Technology Corporation. It was also partially funded by the Ministry of Agriculture, Forestry and Fisheries of Japan.
*   Corresponding author; e-mail skikuchi{at}abr.affrc.go.jp; fax 81-298-38-7007.

Plant Physiol. (1999) 120: 113-120
Copyright Clearance Center:   0032-0889/99/120//08
© 1999 American Society of Plant Physiologists




This article has been cited by other articles:


Home page
 DevelopmentHome page
Y. Yoshida, R. Sano, T. Wada, J. Takabayashi, and K. Okada
Jasmonic acid control of GLABRA3 links inducible defense and trichome patterning in Arabidopsis
Development, March 15, 2009; 136(6): 1039 - 1048.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
S. P. Rius, P. Casati, A. A. Iglesias, and D. F. Gomez-Casati
Characterization of Arabidopsis Lines Deficient in GAPC-1, a Cytosolic NAD-Dependent Glyceraldehyde-3-Phosphate Dehydrogenase
Plant Physiology, November 1, 2008; 148(3): 1655 - 1667.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
T. Nagata, S. Todoriki, and S. Kikuchi
Radial Expansion of Root Cells and Elongation of Root Hairs of Arabidopsis thaliana Induced by Massive Doses of Gamma Irradiation
Plant Cell Physiol., November 15, 2004; 45(11): 1557 - 1565.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 1999 by the American Society of Plant Biologists