Phototropism and gravitropism in lateral roots of arabidopsis
Gravitropism and, to a lesser extent, phototropism have been characterized in primary roots, but little is known about structural/functional aspects of these tropisms in lateral roots. Therefore, in this study, we report on tropistic responses in lateral roots of Arabidopsis thaliana. Lateral roots...
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| Veröffentlicht in: | Plant and cell physiology 2002-01, Vol.43 (1), p.35-43 |
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| container_title | Plant and cell physiology |
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| creator | Kiss, J.Z. (Miami Univ., Oxford (USA)) Miller, K.M Ogden, L.A Roth, K.K |
| description | Gravitropism and, to a lesser extent, phototropism have been characterized in primary roots, but little is known about structural/functional aspects of these tropisms in lateral roots. Therefore, in this study, we report on tropistic responses in lateral roots of Arabidopsis thaliana. Lateral roots initially are plagiogravitropic, but when they reach a length of approximately 10 mm, these roots grow downward and exhibit positive orthogravitropism. Light and electron microscopic studies demonstrate a correlation between positive gravitropism and development of columella cells with large, sedimented amyloplasts in wild-type |
| doi_str_mv | 10.1093/pcp/pcf017 |
| format | Article |
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| ispartof | Plant and cell physiology, 2002-01, Vol.43 (1), p.35-43 |
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| language | eng |
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| source | MEDLINE; Oxford University Press Journals All Titles (1996-Current); NASA Technical Reports Server; EZB-FREE-00999 freely available EZB journals |
| subjects | Abbreviation: WT Arabidopsis - genetics Arabidopsis - growth & development Arabidopsis - radiation effects ARABIDOPSIS THALIANA Gravitropism - physiology GRAVITY Key words: Amyloplast — Arabidopsis — Columella — Gravitropism — Lateral roots — Root phototropism Life Sciences (General) LIGHT Microscopy, Electron Mutation Phototropism - physiology Plant Roots - growth & development Plant Roots - radiation effects Plant Roots - ultrastructure ROOTS Space life sciences TROPISMS wild-type |
| title | Phototropism and gravitropism in lateral roots of arabidopsis |
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