Characterization of root-nodulating bacteria on Retama raetam in arid Tunisian soils  

作　　者：Mosbah Mahdhi Angèle Nzoué Philippe de Lajudie Mohamed Mars 

机构地区：[1]Laboratory of Plant Biotechnology Applied to Crop Improvement, Faculty of Sciences of Gabès, Erriadh City Zrig 6072, Gabès, Tunisia [2]Laboratory of Tropical and Mediterranean Symbioses, IRD/INRA/CIRAD/UM2/AGRO-M (UMR 113), Montpellier F34398, France

出　　处：《Progress in Natural Science:Materials International》2008年第1期43-49,共7页自然科学进展·国际材料（英文版）

摘　　要：The aim of this study is to investigate the diversity of Retama raetam root-nodule bacteria isolated from arid regions of Tunisia. Twelve isolates, chosen as representative for different 16S rRNA gene patterns, were characterized by 16S rRNA gene sequencing and phenotypic analysis. Isolates were assigned to Sinorhizobium, Rhizobium and Agrobacterium. Symbiotic properties of Sinorhizobium and Rhizobium isolates showed a large diversity in their capacity to infect their host plant and fix atmospheric nitrogen. Strain RK 22 identified as Rhizobium was the most effective isolate.The aim of this study is to investigate the diversity of Retama raetam root-nodule bacteria isolated from arid regions of Tunisia. Twelve isolates, chosen as representative for difierent 16S rRNA gene patterns, were characterized by 16S rRNA gene sequencing and phenotypic analysis. Isolates were assigned to Sinorhizobium, Rhizobium and Agrobacterium. Symbiotic properties of Sinorhizobium and Rhizobium isolates showed a large diversity in their capacity to infect their host plant and fix atmospheric nitrogen. Strain RK 22 identified as Rhizobium was the most effective isolate.

关 键 词：Retama raetam RHIZOBIA 16S rRNA gene sequence Tunisia 

分 类 号：S154.3[农业科学—土壤学]