Diversity of Sinorhizobium meliloti from the Central Asian Alfalfa Gene Center.
نویسندگان
چکیده
Sinorhizobium meliloti was isolated from nodules and soil from western Tajikistan, a center of diversity of the host plants (Medicago, Melilotus, and Trigonella species). There was evidence of recombination, but significant disequilibrium, between and within the chromosome and megaplasmids. The most frequent alleles matched those in the published genome sequence.
منابع مشابه
پراکنش گونه‌های سینوریزوبیومی Sinorhizobium meliloti و S. medicae همزیست با یونجه در مناطق غربی ایران
To characterize the geographical distribution of medicago-nodulating rhizobia in western regions of Iran, 950 Sinorhizobium isolates were trapped from a combination of two local alfalfa populations (Hamedani, Nikshahri) together with a foreign cultivar ( Kodi) and soil samples from eight sites across Kurdestan, Kermanshah, Eastern Azarbayjan and Lorestan provinces. Also, a total of 45 isolates ...
متن کاملپراکنش گونه‌های سینوریزوبیومی Sinorhizobium meliloti و S. medicae همزیست با یونجه در مناطق غربی ایران
To characterize the geographical distribution of medicago-nodulating rhizobia in western regions of Iran, 950 Sinorhizobium isolates were trapped from a combination of two local alfalfa populations (Hamedani, Nikshahri) together with a foreign cultivar ( Kodi) and soil samples from eight sites across Kurdestan, Kermanshah, Eastern Azarbayjan and Lorestan provinces. Also, a total of 45 isolates ...
متن کاملتأثیر شوری بر برخی شاخص‌های رشد و پروتئین کل یونجه تلقیح شده با جدایه‌های باکتری Sinorhizobium meliloti در شرایط گلخانه
This greenhouse experiment was carried out to evaluate the effects of salinity and bacterial inoculation on some growth indices and total protein content of alfalfa (Medicago sativa) using a factorial completely randomized design with three replications. The effect of three salinity levels (0, 6 and 12 dS/m) induced by a mixture of NaCl, CaCl2 and MgCl2 salts on growth indices and protein conte...
متن کاملA highly conserved protein of unknown function is required by Sinorhizobium meliloti for symbiosis and environmental stress protection.
We report here the first characterization of the Sinorhizobium meliloti open reading frame SMc01113. The SMc01113 protein is a member of a highly conserved protein family, universal among bacteria. We demonstrate that the SMc01113 gene is absolutely required for S. meliloti symbiosis with alfalfa and also for the protection of the bacterium from a wide range of environmental stresses.
متن کاملThe LuxR homolog ExpR, in combination with the Sin quorum sensing system, plays a central role in Sinorhizobium meliloti gene expression.
Quorum sensing, a population density-dependent mechanism for bacterial communication and gene regulation, plays a crucial role in the symbiosis between alfalfa and its symbiont Sinorhizobium meliloti. The Sin system, one of three quorum sensing systems present in S. meliloti, controls the production of the symbiotically active exopolysaccharide EPS II. Based on DNA microarray data, the Sin syst...
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ورودعنوان ژورنال:
- Applied and environmental microbiology
دوره 68 9 شماره
صفحات -
تاریخ انتشار 2002