Involvement of cytokinins in adventitious and lateral root formation
スポンサーリンク
概要
- 論文の詳細を見る
The root systems of higher plant consist of primary, lateral, and adventitious roots. There is a current hypothesis, named 'root apical dominance', that root-derived suppressor negatively regulates the formation of adventitious and lateral roots. According to this hypothesis, we have studied the mechanisms involved in the regulation of adventitious and lateral root forma-tion. trans-zeatin riboside (ZR), one of cytokinin species, was identified in squash root xylem sap as a main suppressor of adventitious root formation in cucumber, suggesting that ZR transported from root via xylem sap acts as an endogenous suppressor of hypocotyl adventi-tious root formation in planta. Moreover, we isolated Arabidopsis mutant, wooden leg-3 (wol-3), for stimulated adventitious root formation in intact plants. Analyses of wol-3 mutant have revealed that cytokinin receptors are necessary for the primary and lateral root formation via the formation of auxin-transporting vascular tissues in the hypocotyl, but not for adventitious roots. In this review, we discuss the relationship between cytokinin and adventitious and lateral root formation.
- 根研究学会の論文
著者
-
Satoh Shinobu
Graduate School Of Life And Environmental Sci. Univ. Of Tsukuba
-
Kuroha Takeshi
Graduate School of Life and Environmental Sciences, University of Tsukuba.
関連論文
- Effects of the removal of cotyledons on endogenous gibberellin levels in hypocotyls of young cucumber and tomato seedlings
- EFFECTS OF ETHYLENE AND GIBBERELLIN ON TISSUE-REUNION PROCESS IN THE ARABIDOPSIS CUT FLOWERING STEM
- EFFECT OF INORGANIC ELEMENTS ON THE TISSUE-REUNION PROCESS IN THE CUT CUCUMBER HYPOCOTYLS
- Benzyladenine arrests cell cycle progression in G1 phase in tobacco BY-2 cells preceding induction of cell death
- Involvement of a tobacco leucine-rich repeat-extensin in cell morphogenesis
- Expression and functions of myo-inositol monophosphatase family genes in seed development of Arabidopsis
- Abscisic acid-inducible 25 kDa xylem sap protein abundant in winter poplar
- Seasonal fluctuation of organic and inorganic components in xylem sap of Populus nigra
- Ectopic expression of the leucine-rich repeat-domain of cell wall extensin gene NpLRX1 disturbs morphogenesis of leaf cells by its association with cell membranes in tobacco
- Effects of shoot-applied gibberellin/gibberellin-biosynthesis inhibitors on root growth and expression of gibberellin biosynthesis genes in Arabidopsis thaliana
- Ectopic expression of the leucine-rich repeat-domain of cell wall extensin gene NpLRX1 disturbs morphogenesis of leaf cells by its association with cell membranes in tobacco
- Effect of silicon deficiency on secondary cell wall synthesis in rice leaf
- Involvement of cytokinins in adventitious and lateral root formation