Morphology and anatomy of root nodules of Retama monosperma (L.)Boiss
| Autor: | Delphine Capela, Ton Timmers, Nawel Selami, Meriem Kaid-Harche, Marie-Christine Auriac, Olivier Catrice |
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| Přispěvatelé: | Laboratoire des Productions, Valorisations Végétales et Microbiennes, Université des sciences et de la Technologie d'Oran Mohamed Boudiaf [Oran] (USTO MB), Unité mixte de recherche interactions plantes-microorganismes, Institut National de la Recherche Agronomique (INRA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), French Laboratory of Excellence project 'TULIP' [ANR-10-LABX-41, ANR-11-IDEX-0002-02] |
| Rok vydání: | 2014 |
| Předmět: |
0106 biological sciences
Root nodule [SDV]Life Sciences [q-bio] Soil Science Retama Plant Science 01 natural sciences Bradyrhizobium Rhizobia 03 medical and health sciences Botany medicine [SDV.BV]Life Sciences [q-bio]/Vegetal Biology 14. Life underwater 030304 developmental biology 0303 health sciences biology Retama monosperma Nodule (medicine) Anatomy 15. Life on land biology.organism_classification Nitrogen fixation Ultrastructure medicine.symptom 010606 plant biology & botany |
| Zdroj: | Plant and Soil Plant and Soil, Springer Verlag, 2014, 379 (1-2), pp.109-119. ⟨10.1007/s11104-014-2045-5⟩ |
| ISSN: | 1573-5036 0032-079X |
| DOI: | 10.1007/s11104-014-2045-5 |
| Popis: | In spite of the importance of Retama species for dune stabilization and re-vegetation and the contribution to the bio-fertilization of semi-arid and arid ecosystems, the symbiotic interaction of Retama species with rhizobia remains largely unstudied. In this paper, we aim to provide the first detailed study on nodule morphology and anatomy of Retama monosperma. We collected nodules from coastal areas nearby Oran (Algeria) and studied in detail their anatomy and ultrastructure by light and electron microscopy. First, we confirmed the likely identity of the microsymbiont as B. retamae and found that nodules of R. monosperma belong to the genistoid type of indeterminate nodules. Infection threads, typical for most nodules of legumes, are absent in nodules of R. monosperma and bacterial spread is associated with plant cell division. The nitrogen fixation zone is homogenous with only invaded cells and a network of non-invaded cells found in many nodules, is absent. Moreover, endoreduplication does not take place in bacteroids in nodules of R. monosperma. The features observed in this study are compared to the morphology and anatomy of nodules of other legumes and the possible consequences for nodule functioning and the mode of infection during the establishment of the interaction are discussed. |
| Databáze: | OpenAIRE |
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