Manganese toxicity in tomato plants: effects on cation uptake and distribution
| Autor: | M.L. van Beusichem, J. Le Bot, Ernest A. Kirkby |
|---|---|
| Přispěvatelé: | Station d'agronomie et de physiologie végétale, Institut National de la Recherche Agronomique (INRA), University of Leeds, Wageningen University and Research Centre (WUR) |
| Jazyk: | angličtina |
| Rok vydání: | 1990 |
| Předmět: |
0106 biological sciences
Physiology [SDV]Life Sciences [q-bio] Sub-department of Soil Quality 01 natural sciences Lycopersicon Dry weight Botany Life Science ComputingMilieux_MISCELLANEOUS biology Chemistry fungi food and beverages Xylem 04 agricultural and veterinary sciences biology.organism_classification Hydroponics Sectie Bodemkwaliteit Shoot 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Phytotoxicity Agronomy and Crop Science Solanaceae 010606 plant biology & botany Black spot |
| Zdroj: | Journal of Plant Nutrition Journal of Plant Nutrition, Taylor & Francis, 1990, 13 (5), pp.513-525 Journal of Plant Nutrition 13 (1990) Journal of Plant Nutrition, 13, 513-525 HAL |
| ISSN: | 0190-4167 1532-4087 |
| DOI: | 10.1080/01904169009364096 |
| Popis: | Two experiments are described in which tomato plants (Lycopersicon esculentum L. var Ailsa Craig) were grown in water culture supplied with 10–300 μM Mn. Toxicity symptoms associated with a yield reduction were observed only in treatments in excess of 50 μM Mn indicating that this species is relatively tolerant of high Mn supply. Dark brown/black spots appeared first in the cotyledons. Similar symptoms were observed in the leaves, progressively from the oldest leaf. Manganese concentration in the shoot tissues ranged from 286 to 4240 μg. g‐1 dry weight. The high Mn concentration values found in the shoot tissues of the toxic plants indicate that Mn was highly mobile in the xylem as confirmed by xylem sap analysis. The concentrations of both Ca and Mg were lower in the smaller Mn toxic plants. Not only was uptake of Ca and Mg retarded but so also was the distribution of Ca and Mg to the younger tissues as illustrated by measurements of Ca and Mg concentrations along a leaf age sequence. This is in... |
| Databáze: | OpenAIRE |
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