Arbuscular mycorrhizal colonization and nodulation improve flooding tolerance in Pterocarpus officinalis Jacq. seedlings

Autor: Félix Muller, S. M. de Faria, Bernard Dreyfus, S. Nd. Sylla, Y. Prin, Sabrina Renciot, Amadou Moustapha Bâ, Christian Plenchette, Jean-Marc Bouvet, Laétitia Fougnies
Přispěvatelé: Université des Antilles (UA), Acteurs, Ressources et Territoires dans le Développement (UMR ART-Dev), Centre National de la Recherche Scientifique (CNRS)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université de Montpellier (UM)-Université de Perpignan Via Domitia (UPVD)-Université Paul-Valéry - Montpellier 3 (UPVM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Biologie et Gestion des Adventices (BGA), Université de Bourgogne (UB)-Institut National de la Recherche Agronomique (INRA)-Etablissement National d'Enseignement Supérieur Agronomique de Dijon (ENESAD), Laboratoire des symbioses tropicales et méditerranéennes (UMR LSTM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université Montpellier 1 (UM1)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université de Montpellier (UM)-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), Ecologie des forêts de Guyane (ECOFOG), Ecole Nationale du Génie Rural, des Eaux et des Forêts (ENGREF)-Institut National de la Recherche Agronomique (INRA)-Université des Antilles et de la Guyane (UAG)-Centre National de la Recherche Scientifique (CNRS), Institut Sénégalais de Recherches Agricoles [Dakar] (ISRA)
Jazyk: angličtina
Rok vydání: 2007
Předmět:
0106 biological sciences
Root nodule
Tige
Acclimatization
GLOMUS INTRARADICES
F62 - Physiologie végétale - Croissance et développement
Plant Science
Root system
nodosité racinaire
01 natural sciences
Mycorhizé à vésicule et arbuscule
mycorrhizal adventitious roots
MYCORRHIZAL ADVENTITIUOS ROOTS
Disasters
Mycorrhizae
Bradyrhizobium
Mycorrhiza
[SDV.MP.MYC]Life Sciences [q-bio]/Microbiology and Parasitology/Mycology
Mycorhizé
Inondation
food and beverages
General Medicine
Arbuscular mycorrhiza
Tolérance
Glomus intraradices
Fixation de l'azote
Pterocarpus
Racine adventive
Symbiose
Biology
010603 evolutionary biology
STEM NODULES
Aerenchyma
Symbiosis
Nitrogen Fixation
Botany
Genetics
Molecular Biology
Ecology
Evolution
Behavior and Systematics
arbuscular mycorrhizas
BRADYRHIZOBIUM
Lateral root
fungi
P34 - Biologie du sol
stem nodules
15. Life on land
biology.organism_classification
Lenticel
F61 - Physiologie végétale - Nutrition
Seedlings
H50 - Troubles divers des plantes
ARBUSCULAR MYCORRHIZAS
010606 plant biology & botany
Zdroj: Mycorrhiza
Mycorrhiza, Springer Verlag, 2007, 17 (3), pp.159-166. ⟨10.1007/s00572-006-0085-2⟩
ISSN: 0940-6360
1432-1890
DOI: 10.1007/s00572-006-0085-2⟩
Popis: International audience; Pterocarpus officinalis (Jacq.) seedlings inoculated with the arbuscular mycorrhizal fungus, Glomus intraradices, and the strain of Bradyrhizobium sp. (UAG 11A) were grown under stem-flooded or nonflooded conditions for 13 weeks after 4 weeks of nonflooded pretreatment under greenhouse conditions. Flooding of P. officinalis seedlings induced several morphological and physiological adaptive mechanisms, including formation of hypertrophied lenticels and aerenchyma tissue and production of adventitious roots on submerged portions of the stem. Flooding also resulted in an increase in collar diameter and leaf, stem, root, and total dry weights, regardless of inoculation. Under flooding, arbuscular mycorrhizas were well developed on root systems and adventitious roots compared with inoculated root systems under nonflooding condition. Arbuscular mycorrhizas made noteworthy contributions to the flood tolerance of P. officinalis seedlings by improving plant growth and P acquisition in leaves. We report in this study the novel occurrence of nodules connected vascularly to the stem and nodule and arbuscular mycorrhizas on adventitious roots of P. officinalis seedlings. Root nodules appeared more efficient fixing N2 than stem nodules were. Beneficial effect of nodulation in terms of total dry weight and N acquisition in leaves was particularly noted in seedlings growing under flooding conditions. There was no additive effect of arbuscular mycorrhizas and nodulation on plant growth and nutrition in either flooding treatment. The results suggest that the development of adventitious roots, aerenchyma tissue, and hypertrophied lenticels may play a major role in flooded tolerance of P. officinalis symbiosis by increasing oxygen diffusion to the submerged part of the stem and root zone, and therefore contribute to plant growth and nutrition.
Databáze: OpenAIRE
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