Phenotypic and genetic diversity in <Emphasis Type="Italic">Sinorhizobium meliloti</Emphasis> and <Emphasis Type="Italic">S. medicae</Emphasis> from drought and salt affected regions of Morocco |
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Authors: | Nadia Elboutahiri Imane Thami-Alami Sripada M Udupa |
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Institution: | 1.Institut National de la Recherche Agronomique (INRA),Centre Régional de la Recherche Agronomique de Rabat,Rabat,Morocco;2.ICARDA-INRA Cooperative Research Project,International Center for Agricultural Research in the Dry Areas (ICARDA),Rabat,Morocco |
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Abstract: | Background
Sinorhizobium meliloti and S. medicae are symbiotic nitrogen fixing bacteria in root nodules of forage legume alfalfa (Medicago sativa L.). In Morocco, alfalfa is usually grown in marginal soils of arid and semi-arid regions frequently affected by drought,
extremes of temperature and soil pH, soil salinity and heavy metals, which affect biological nitrogen fixing ability of rhizobia
and productivity of the host. This study examines phenotypic diversity for tolerance to the above stresses and genotypic diversity
at Repetitive Extragenic Pallindromic DNA regions of Sinorhizobium nodulating alfalfa, sampled from marginal soils of arid and semi-arid regions of Morocco. |
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