Effects of the inoculation of cyanobacteria on the microstructure and the structural stability of a tropical soil
| العنوان: | Effects of the inoculation of cyanobacteria on the microstructure and the structural stability of a tropical soil |
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| المؤلفون: | Yves Le Bissonnais, L. P. D’Acqui, Marcus Annerman, Oumarou Malam Issa, Christian Défarge, Béatrice Marin, Sophie Nordenberg, Odile Duval, Ary Bruand |
| المساهمون: | Groupe d'Étude sur les Géomatériaux et Environnements Naturels, Anthropiques et Archéologiques - EA 3795 (GEGENAA), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences de la Terre d'Orléans (ISTO), Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Unité de Science du Sol, Institut National de la Recherche Agronomique (INRA), Istituto per lo Studio degli Ecosistemi ISE-CNR, Istituto per lo Studio degli Ecosistemi, This work formed part of CYANOSOILS project funded by European Union, contract no. ICA4-CT-2001-10058, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Maison des Sciences Humaines de Champagne-Ardenne (MSH-URCA), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA), Laboratoire d'étude des Interactions Sol - Agrosystème - Hydrosystème (UMR LISAH), Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Maison des Sciences Humaines de Champagne-Ardenne (MSH-URCA) |
| المصدر: | Plant and Soil Plant and Soil, Springer Verlag, 2007, 290, pp.1-2, 209-219. ⟨10.1007/s11104-006-9153-9⟩ Plant and Soil, Springer Verlag, 2007, 290 (1-2), pp.1-2, 209-219. ⟨10.1007/s11104-006-9153-9⟩ Plant and Soil, 2007, 290 (1-2), pp.1-2, 209-219. ⟨10.1007/s11104-006-9153-9⟩ Plant and soil 290 (2007): 209–219. doi:10.1007/s11104-006-9153-9 info:cnr-pdr/source/autori:Issa Oumarou Malam; Christian Défarge; Yves Le Bissonnais; Béatrice Marin; Odile Duval; Ary Bruand; D'Acqui Luigi Paolo; Sofie Nordenberg; Marcus Annerman/titolo:Effects of the inoculation of cyanobacteria on the microstructure and the structural stability of a tropical soil/doi:10.1007%2Fs11104-006-9153-9/rivista:Plant and soil (Print)/anno:2007/pagina_da:209/pagina_a:219/intervallo_pagine:209–219/volume:290 |
| بيانات النشر: | HAL CCSD, 2007. |
| سنة النشر: | 2007 |
| مصطلحات موضوعية: | Cyanobacteria, Nostoc, Microorganism, Soil Science, Plant Science, 010501 environmental sciences, Photosynthesis, Organo-mineral aggregates, 01 natural sciences, Cryo-SEM, Structural stability, Inoculation, Botany, [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment, Incubation, 0105 earth and related environmental sciences, 2. Zero hunger, biology, Humidity, 04 agricultural and veterinary sciences, 15. Life on land, biology.organism_classification, 6. Clean water, Horticulture, Soil water, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries |
| الوصف: | Cyanobacteria are widespread photosynthetic microorganisms among which some are able to fix atmospheric nitrogen. We investigated the impact of indigenous cyanobacteria strains (Nostoc) inoculation on physical characteristics of poorly aggregated soils from Guquka (Eastern Cape, South Africa). The soil aggregates (3–5 mm) were arranged into a layer of 10–20 mm thick, and sprayed with cyanobacteria solution. Subsequently the inoculated and un-inoculated samples were incubated (30°C, 80% humidity, continuous illumination at 100 μmol m−2 s−1). Their micromorphological characteristics and aggregate stability were investigated, after 1, 2, 3, 4 and 6 weeks of incubation, by using high resolution Cryo-SEM and aggregate breakdown tests. Micromorphological investigations revealed that the surface of un-inoculated samples remained uncovered, while the inoculated samples were partially covered by cyanobacteria material after one week of incubation. A dense superficial network of cyanobacterial filaments and extracellular polymer secretions (EPS) covered their surface after 4 and 6 weeks of incubation. Organo-mineral aggregates comprising cyanobacterial filaments and EPS were observed after 6 weeks of incubation. The results of aggregate breakdown tests showed no significant difference between un-inoculated samples after 1, 2, 3, 4 or 6 weeks, while they revealed improvement of aggregate stability for inoculated samples. The improvement of aggregate stability appeared in a short while following inoculation and increased gradually with time and cyanobacteria growth. The increase in aggregate stability is likely related to the changes induced in micromorphological characteristics by cyanobacterial filaments and EPS. It reflects the effect of coating, enmeshment, binding and gluing of aggregates and isolated mineral particles by cyanobacteria material. Our study presents new data demonstrating the improvement of soil physical quality in a few weeks after cyanobacteria inoculation. The interaction of the inocula and other biotic components is worthy of study before field application of cyanobacteria. |
| اللغة: | English |
| تدمد: | 0032-079X 1573-5036 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0470312af84c864e543f9a0bdbee67a7Test https://hal-insu.archives-ouvertes.fr/hal-00120328/documentTest |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....0470312af84c864e543f9a0bdbee67a7 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 0032079X 15735036 |
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