Medicago sativa-rhizobia symbiosis under water deficit: Physiological, antioxidant and nutritional responses in nodules and leaves
| Autor: | Mohamed Farissi, Abdelaziz Bouizgaren, Mohammed Mouradi, Cherki Ghoulam, Ahmed Qaddoury |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
biology Physiology fungi Drought tolerance food and beverages 04 agricultural and veterinary sciences biology.organism_classification 01 natural sciences Rhizobia Superoxide dismutase Symbiosis Catalase Botany 040103 agronomy & agriculture biology.protein Nitrogen fixation 0401 agriculture forestry and fisheries Medicago sativa Agronomy and Crop Science Plant nutrition 010606 plant biology & botany |
| Zdroj: | Journal of Plant Nutrition. 41:384-395 |
| ISSN: | 1532-4087 0190-4167 |
| Popis: | Biological nitrogen fixation has positive effects in the enhancement of soil nutrition and plants growth, especially under difficult conditions. The study assesses the effect of drought (40% field capacity) on growth, physiological and biochemical parameters of six symbioses involving two Moroccan alfalfa populations Adis-Tata (Ad) and Riche (Rc) and Moapa (Mo) variety and ArfRh2 (Rh2) and AufRh8 (Rh8) rhizobia isolated from Arfoud and Aufous, respectively. Results showed that drought decreased plants growth and nodulation. Physiologically, as response to stress, the nodules membrane stability was negatively affected. Biochemically, activities of peroxidase (POX), catalase (CAT), superoxide dismutase (SOD) and acid phosphatase (APase) increased in leaves and nodules. Ad-Rh2, Rc-Rh2 and Ad-Rh8 have been qualified as more drought tolerant. They showed high antioxidant activities and as consequence less membrane damages especially in their nodules. The increase in nodules health and antioxidant defen... |
| Databáze: | OpenAIRE |
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