Influence of arbuscular mycorrhizal colonisation on cadmium induced Medicago truncatula root isoflavonoid accumulation
| Autor: | Dominique Morandi, Samira Aschi-Smit, Achref Aloui, Diederik van Tuinen, Zeina Daher, Eliane Dumas-Gaudot |
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| Přispěvatelé: | Agroécologie [Dijon], Institut National de la Recherche Agronomique (INRA)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Université of Tunis |
| Rok vydání: | 2012 |
| Předmět: |
Rhizophagus irregularis
Coumestrol Pterocarpans Physiology [SDV]Life Sciences [q-bio] chemistry.chemical_element mycorrhiza Down-Regulation Environmental pollution Plant Science Plant Roots chemistry.chemical_compound Soil Isoflavonoid Glucosides Gene Expression Regulation Plant Mycorrhizae Botany Medicago truncatula Genetics Medicarpin Biomass Mycorrhiza heavy metals Glomeromycota Symbiosis Glomus Plant Proteins Cadmium biology fungi food and beverages biology.organism_classification isoflavonoids Isoflavones Alcohol Oxidoreductases chemistry [SDE]Environmental Sciences leguminous plants Plant Shoots |
| Zdroj: | Plant Physiology and Biochemistry Plant Physiology and Biochemistry, Elsevier, 2012, 60, pp.233-239. ⟨10.1016/j.plaphy.2012.08.014⟩ |
| ISSN: | 1873-2690 0981-9428 |
| DOI: | 10.1016/j.plaphy.2012.08.014⟩ |
| Popis: | Cadmium is a serious environmental pollution threats to the planet. Its accumulation in plants affects many cellular functions, resulting in growth and development inhibition, whose mechanisms are not fully understood. However, some fungi forming arbuscular mycorrhizal symbiosis with the majority of plant species have the capacity to buffer the deleterious effect of this heavy metal. In the present work we investigated the capacity of Rhizophagus irregularis (syn. Glomus irregularis) to alleviate cadmium stress in Medicago truncatula. In spite of a reduction in all mycorrhizal parameters, plants colonized for 21 days by R. irregularis and treated by 2 mg kg(-1) cadmium displayed less growth inhibition in comparison to plants grown without cadmium. Cadmium strongly increased the accumulation of some isoflavonoids and their derivates: formononetin, malonylononin, medicarpin 3-O-beta-(6'-malonylglucoside), medicarpin and coumestrol. Interestingly, in plants colonized by R. irregularis we noticed a strong reduction of the cadmium-induced accumulation of root isoflavonoids, a part for medicarpin and coumestrol. Moreover, transcripts of chalcone reductase, a protein that we reported previously as being down-regulated in R. irregularis-colonized M. truncatula roots, revealed a similar expression pattern with a strong increase in response to cadmium and a reduced expression in cadmium-treated mycorrhizal roots |
| Databáze: | OpenAIRE |
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