Correlations between polyamine ratios and growth patterns in seedling roots
The levels of putrescine, cadaverine, spermidine and spermine were determined in seedling roots of pea, tomato, millet and corn, as well as in corn coleoptiles and pea internodes. In all roots, putrescine content increased as elongation progressed, and the putrescine/spermine ratio closely parallel...
| Veröffentlicht in: | Plant growth regulation. - 1985. - 3(1985) vom: 15., Seite 353-63 |
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| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
1985
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| Zugriff auf das übergeordnete Werk: | Plant growth regulation |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. NASA Discipline Number 40-10 NASA Discipline Plant Biology NASA Program Space Biology Non-NASA Center Polyamines Spermine 2FZ7Y3VOQX mehr... |
| Zusammenfassung: | The levels of putrescine, cadaverine, spermidine and spermine were determined in seedling roots of pea, tomato, millet and corn, as well as in corn coleoptiles and pea internodes. In all roots, putrescine content increased as elongation progressed, and the putrescine/spermine ratio closely paralleled the sigmoid growth curve up until the time of lateral root initiation. Spermidine and spermine were most abundant near the apices and declined progressively with increasing age of the cells. In the zone of differentiation of root hairs in pea roots, putrescine rose progressively with increasing age, while cadaverine declined. In both pea internodes and corn coleoptiles, the putrescine/spermidine ratio rises with increasing age and elongation. Thus, a block in the conversion of the diamine putrescine to the triamine spermidine may be an important step in the change from cell division to cell elongation |
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| Beschreibung: | Date Completed 10.10.1997 Date Revised 09.01.2024 published: Print Citation Status MEDLINE |
| ISSN: | 0167-6903 |