Translocation and metabolism of phosphate following absorption by the ascocarps of Tuber melanosporum and T. aestivum
| Autor: | D. Barry, B. Jaillard, Siobhan Staunton, G. Callot |
|---|---|
| Přispěvatelé: | Station de recherches sur les symbiotes des racines, Institut National de la Recherche Agronomique (INRA), Unité de Science du Sol |
| Jazyk: | angličtina |
| Rok vydání: | 1995 |
| Předmět: |
Peridium
Hypha Plant Science Biology 030308 mycology & parasitology 03 medical and health sciences chemistry.chemical_compound Tuber aestivum Paraphyses Botany Genetics Incubation Ecology Evolution Behavior and Systematics ComputingMilieux_MISCELLANEOUS [SDV.MP.MYC]Life Sciences [q-bio]/Microbiology and Parasitology/Mycology 0303 health sciences fungi 04 agricultural and veterinary sciences biology.organism_classification Phosphate Ascocarp chemistry Biochemistry Tuber melanosporum 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Biotechnology |
| Zdroj: | Mycological Research Mycological Research, Elsevier, 1995, 99 (2), pp.167-172 |
| ISSN: | 0953-7562 1469-8102 |
| Popis: | The capacity of the tufts of hyphae which sprout from the scales of the peridium of the ascocarps of Tuber aestivum and Tuber melanosporum to absorb phosphate has been confirmed using labelled phosphate. The detailed distribution of the tracer was determined from autoradiographs and these and the corresponding photographs were studied using image analysis. The aim of this investigation was to identify the conduction pathways of absorbed [32P]phosphate; these were found to be the fertile veins of the gleba, and in particular the sterile hyphae adjacent to the paraphyses. Some of the compound was metabolised rapidly by the ascocarp. These results provide additional evidence that the ascocarp may become nutritionally autonomous at some stage in its development. In addition, the role of the tufts of hyphae in the physiology of the ascocarp suggests a link between its mode of growth and its external form. The distribution of absorbed phosphate was heterogeneous even after a 24 h incubation period. The similarity of the distribution profiles of the isotope across fertile veins, both with and without incubation, suggests that translocation continues throughout the incubation period, and that metabolised phosphate may be remobilised. |
| Databáze: | OpenAIRE |
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