MOBILIZATION OF LABELLED ORGANIC SULFUR IN RHIZOSPHERE OF RAPE AND BARLEY AND IN NON-RHIZOSPHERE SOIL
| Autor: | P.C. Vong, Armand Guckert, Françoise Lasserre-Joulin |
|---|---|
| Přispěvatelé: | Laboratoire Agronomie et Environnement (LAE), Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL), ProdInra, Migration |
| Rok vydání: | 2002 |
| Předmět: |
[SDE] Environmental Sciences
0106 biological sciences Physiology [SDV]Life Sciences [q-bio] Ammonium nitrate chemistry.chemical_element Biomass Root system Secondary metabolite 01 natural sciences chemistry.chemical_compound Botany medicine COLZA ComputingMilieux_MISCELLANEOUS 2. Zero hunger Rhizosphere Soil organic matter Sowing 04 agricultural and veterinary sciences Sulfur [SDV] Life Sciences [q-bio] chemistry Agronomy [SDE]Environmental Sciences 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Agronomy and Crop Science 010606 plant biology & botany medicine.drug |
| Zdroj: | Journal of Plant Nutrition Journal of Plant Nutrition, Taylor & Francis, 2002, 25 (10), pp.2191-2204 |
| ISSN: | 1532-4087 0190-4167 |
| DOI: | 10.1081/pln-120014070 |
| Popis: | Rape is known to require more sulfur (S) than is necessary for the secondary metabolite synthesis. It is hypothesized that its coarse root system harbors more homogenous microbial biomass specific for sulfur immobilization/remobilization. In a growth chamber experiment, this work examined the ability of rape and barley to take up the labile 35S (including 35S–SO4 2− and 35S-organic extracted by hot water). For that, the endogenous compounds of soil organic matter were previously labeled with 35S–SO4 2− for three months prior to plant growth. The use of “rhizobag”, a polyamide bag, easily allows the separation of rhizosphere from non-rhizosphere soil. In order to simulate the high input agrosystems, the soil received just before sowing, a unique dose of 76.9 mg N kg−1 soil as ammonium nitrate and three levels of S (20.4, 30.8, and 61.5 mg kg−1 soil) as MgSO4. Despite the dilutions made by levels of additional S–SO4 2−, the results showed an increase in 35S uptake by rape in contrary to barley, whi... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|