Abstract
Four gram-negative, aerobic, motile, non-spore, forming rods with a wide pH and temperature range for growth (pH 7.0–11.0, optimum pH 8.0; 20–45°C, optimum 28°C) strains were isolated from root nodules of Sphaerophysa salsula and characterized by means of a polyphasic approach. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the four strains formed a new lineage related to the genus Rhizobium and the sequence similarities between the isolate and the most related type strain Rhizobium giardinii was 96.5%. These strains also formed a distinctive group from the reference strains for defined Rhizobium species based on housekeeping gene sequences (atpD and recA), BOX-PCR fingerprinting, phenotypic features and symbiotic properties. The representative strain CCNWGS0238T has DNA-DNA relatedness of less than 33.4% with the most closely related species R. giardinii. It is therefore proposed as a new species, Rhizobium sphaerophysae sp. nov., with isolate CCNWGS0238T (=ACCC17498T = HAMBI3074T) as the type strain.





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Barcellos FG, Menna P, Batista JSS, Hungria M (2007) Evidence of horizontal transfer of symbiotic genes from a Bradyrhizobium japonicum inoculant strain to indigenous Sinorhizobium (Ensifer) fredii and Bradyrhizobium elkanii in a Brazilian savannah soil. Appl Environ Microbiol 73:2635–2643
Berge O, Lodhi A, Brandelet G, Santaella C, Roncato MA, Christen R, HeulinT AchouakW (2009) Rhizobium alamii sp. nov., an exopolysaccharide-producing species isolated from legume and non-legume rhizospheres. Int J Syst Evol Microbiol 59:367–372
Broothaerts W, Mitchell HJ, Weir B, Kaines S, Smith LMA, Yang W, Mayer JE, Roa-Rodríguez C, Jefferson RA (2005) Gene transfer to plants by diverse species of bacteria. Nature 433:629–633
De Ley J, Cattoir H, Reynaerts A (1970) The quantitative measurement of DNA hybridization from renaturation rates. Eur J Biochem 12:133–142
Dong XZ, Cai MY (2001) Determinative manual for routine bacteriology. Scientific Press, Beijing
Elliott GN, Chen WM, Bontemps C, Chou JH, Young JPW, Sprent JI, James EK (2007) Nodulation of Cyclopia spp. (Leguminosae, Papilionoideae) by Burkholderia tuberum. Ann. Bot. 100:1403–1411
Galtier N, Gouy M, Gautier C (1996) SEAVIEW and PHYLO_WIN: two graphic tools for sequence alignment and molecular phylogeny. Comput Appl Biosci 12:543–548
Gao JL, Sun JG, Li Y, Wang ET, Chen WX (1994) Numerical taxonomy and DNA relatedness of tropical rhizobia isolated from Hainan province, China. Int J Syst Bacteriol 44:151–158
Gaunt MW, Turner SL, Rigottier-Gois L, Lloyd-Macgilp SA, Young JPW (2001) Phylogenies of atpD and recA support the small subunit rRNA-based classification of rhizobia. Int J Syst Evol Microbiol 51:2037–2048
Gogarten JP, Townsend JP (2005) Horizontal gene transfer, genome innovation and evolution. Nat Rev Microbiol 3:679–687
Graham PH, Sadowsky MJ, Keyser HH, Barnet YM, Bradley RS, Cooper JE, De Ley DJ, DW JarvisB, Roslycky EB (1991) Proposed minimal standards for the description of new genera and species of root- and stem-nodulating bacteria. Int J Syst Bacteriol 41:582–587
Gu CT, Wang ET, Tian CF, Han TX, Chen WF, Sui XH, Chen WX (2008) Rhizobium miluonense sp. nov., a symbiotic bacterium isolated from Lespedeza root nodules. Int J Syst Evol Microbiol 58:1364–1368
Han TX, Wang ET, Wu LJ, Chen WF, Gu JG, Gu CT, Tian CF, Chen WX (2008) Rhizobium multihospitium sp. nov., isolated from multiple legume species native of Xinjiang, China. Int J Syst Evol Microbiol 58:1693–1699
Hou BC, Wang ET, Li Y, Jr-Jia RZ, Chen WF, Gao Y, Dong RJ, Chen WX (2009) Rhizobium tibeticum sp. nov., a symbiotic bacterium isolated from Trigonella archiducis-nicolai (irj.) Vassilcz. Int J Syst Evol Microbiol 59:3051–3057
Jordan DC (1984) Family III. Rhizobiaceae Conn 1938, 321 AL. Bergey’s Manual Syst Bacteriol 1:234–235
Kaschuk G, Hungria M, Andrade DS, Campo RJ (2006) Genetic diversity of rhizobia associated with common bean (Phaseolus vulgaris L.) grown under no-tillage and conventional systems in Southern Brazil. Appl Soil Ecol 32:210–220
Kwon SW, Park JY, Kim JS, Kang JW, Cho YH, Lim CK, Parker MA, Lee GB (2005) Phylogenetic analysis of the genera Bradyrhizobium, Mesorhizobium, Rhizobium and Sinorhizobium on the basis of 16S rRNA gene and internally transcribed spacer region sequences. Int J Syst Evol Microbiol 55:263–270
Laguerre G, Nour SM, Macheret V, Sanjuan J, Drouin P, Amarger N (2001) Classification of rhizobia based on nodC and nifH gene analysis reveals a close phylogenetic relationship among Phaseolus vulgaris symbionts. Microbiology 147:981–993
Lin DX, Chen WF, Wang FQ, Hu D, Wang ET, Sui XH, Chen WX (2009) Rhizobium mesosinicum sp. nov., isolated from root nodules of three different legumes. Int J Syst Evol Microbiol 59:1919–1923
Lu YL, Chen WF, Han LL, Wang ET, Chen WX (2009) Rhizobium alkalisoli sp. nov., isolated from Caragana intermedia growing in saline-alkaline soils in the north of China. Int J Syst Evol Microbiol 59:3006–3011
Marmur J (1961) A procedure for the isolation of DNA from microorganisms. J Mol Biol 3:208–218
Marmur J, Doty P (1962) Determination of the base composition of 171 deoxyribonucleic acid from its thermal denaturation temperature. J Mol Biol 5:109–118
Menna P, Pereira AA, Bangel EV, Hungria M (2009) Rep-PCR of tropical rhizobia for strain fingerprinting, biodiversity appraisal and as a taxonomic and phylogenetic tool. Symbiosis 48:120–130
Nandasena KG, O’Hara GW, Tiwari R, Howieson P, John G (2006) Rapid in situ evolution of nodulating strains for biserrula pelecinus L. through lateral transfer of a symbiosis island from the original mesorhizobial inoculant. Appl Environ Microbiol 72:7365–7367
Peng GX, Yuan QH, Li HX, Zhang W, Tan ZY (2008) Rhizobium oryzae sp. nov., isolated from the wild rice Oryza alta. Int J Syst Evol Microbiol 58:2158–2163
Ren DW, Chen WF, Sui XH, Wang ET, Chen WX (2010a) Rhizobium vignae sp. nov., a symbiotic bacterium isolated from multiple legume species grown in China. Int J Syst Evol Microbiol. doi:10.1099/ijs.0.023143-0
Ren DW, Wang ET, Chen WF, Sui XH, Zhang XX, Liu HC, Chen WX (2010b) Rhizobium herbae sp. nov. and Rhizobium giardinii-related bacteria, minor microsymbionts of various wild legumes in China. Int J Syst Evol Microbiol. doi:10.1099/ijs.0.024943-0
Sneath PHA, Sokal RB (1973) Numerical taxonomy. The principles and practice of numerical classification. W. H. Freeman and Co, San Francisco
Terefework Z, Kaijalainen S, Lindström K (2001) AFLP fingerprinting as a tool to study the genetic diversity of Rhizobium galegae. J Biotechnol 91:169–180
Tian CF, Young JPW, Wang ET, Tamimi SM, Chen WX (2010) Population mixing of Rhizobium leguminosarum bv. viciae nodulating Vicia faba: the role of recombination and lateral gene transfer. FEMS Microbiol Ecol 73:563–576
Turner SL, Young JPW (2000) The glutamine synthetases of rhizobia: phylogenetics and evolutionary implications. Mol Biol Evol 17:309–319
Xu L, Xu JJ, Liu QL, Xie RM, Wei GH (2009) Genetic diversity in rhizobia isolated from Sphaerophysa salsula in several regions of northwestern China. Biodiversity Science 17:69–75
Young JM, Kuykendall LD, Martinez-Romero E, Kerr A, Sawada H et al (2001) A revision of Rhizobium Frank 1889, with an emended description of the genus, and the inclusion of all species of Agrobacterium Conn 1942 and Allorhizobium undicola de Lajudie et al. 1998 as new combinations: Rhizobium radiobacter, R. rhizogenes, R. rubi, R. undicola and R. vitis. Int J Syst Evol Microbiol 51:89–103
Zhang GX, Ren SZ, Xu MY, Zeng GQ, Luo HD, Chen JL, Tan ZY, Sun GP (2010a) Rhizobium borbori sp. nov., an aniline-degrading bacterium isolated from activated sludge. Int J Syst Evol Microbiol. doi:10.1099/ijs.0.022228-0
Zhang RJ, Hou BC, Wang ET, Li YJ, Zhang XX, Chen WX (2010b) Rhizobium tubonense sp. nov., a symbiotic bacterium isolated from root nodules of Oxytropis glabra grown in Tibet, China. Int J Syst Evol Microbiol. doi:10.1099/ijs.0.020156-0
Acknowledgments
This work was supported by projects from the 973 Project of China (2010CB126502), National Science Foundation of China (30970003, 30900215 and 30630054), International Science & Technology Cooperation Program of China (2010DFA91930). We are grateful to Dr. Kristina Lindström and Prof. Ruibo Jiang for deposition of the strain in the culture collections.
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Xu, L., Shi, J.F., Zhao, P. et al. Rhizobium sphaerophysae sp. nov., a novel species isolated from root nodules of Sphaerophysa salsula in China. Antonie van Leeuwenhoek 99, 845–854 (2011). https://doi.org/10.1007/s10482-011-9559-0
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DOI: https://doi.org/10.1007/s10482-011-9559-0


