- HASHEM, F. H., SALEH, S. A., VAN BERKUM, P. and VOLL, M. 1997. Survival of
Bradyrhizobium sp.(Arachis) on fungicide-treated peanut seed in relation to plant growth and yield. World J. Biotech. Microbiol. 13:335-340.
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JARVIS, B. D. W., VAN BERKUM, P., CHEN, W. X., NOUR, S. M., FERNANDEZ, M. P.,
CLEYET-MAREL, J. C. and M. GILLIS. 1997. Transfer of Rhizobium loti, Rhizobium huakuii, Rhizobium ciceri, Rhizobium mediterraneum, and Rhizobium tianshanense to Mesorhizobium gen. nov. Int. J. Syst. Bacteriol. 47:895-898.
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O'NEILL, N. R., VAN BERKUM, P., LIN, J-J., KUO, J., UDE, G. N., KENWORTHY, W.
and SAUNDERS, J. A. 1997. Application of Amplified Restriction Fragment Length
Polymorphism (AFLP) for the genetic characterization of Colletotrichum
pathogens of alfalfa. Phytopath. 87:745-750.
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IBEKWE, A. M., ANGLE, J. S., CHANEY, R. L. and VAN BERKUM, P. 1997.
Enumeration and N2 fixation potential of Rhizobium leguminosarum biovar
trifolii grown in soil with varying pH values and heavy metal concentrations.
Ag. Ecosys. Environ. 61:103-111.
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BUTTERY, B. R., PARK, S. T. and VAN BERKUM, P. 1997. Effects of cultivar and
strain of Rhizobium on growth, bean yield, and nitrogen content of Common Bean (Phaseolus vulgaris L.). Can. J. Plant Sciences 77:347-351.
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BARRERA, L. L., TRUJILLO, M. E., GOODFELLOW, M., GARCIA, F. J., DAVILA, G.,
VAN BERKUM, P. and E. MARTINEZ-ROMERO. 1997. Genetic diversity of
bradyrhizobia nodulating Lupinus spp. Int. J. Syst. Bacteriol.47:1086-1091.
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IBEKWE, A. M., ANGLE, J. S., CHANEY, R. L., and VAN BERKUM, P. 1998. Zinc and
Cadmium effects on rhizobia and white clover using chelator-buffered nutrient
solution. Soil Sci. Soc. Am. J. 62:204-211.
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LAGUERRE, G., VAN BERKUM, P., AMARGER, N. and PREVOST, D. 1997. Genetic
diversity of rhizobial symbionts isolated from legume species within the genera
Astragalus, Oxytropis, and Onobrychis. Appl. Environ. Microbiol. 63:4748-4758.
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VAN BERKUM, P., BEYENE, D., BAO, G., CAMPBELL, A. T. and EARDLY, B. D. 1998.
Rhizobium mongolense sp. nov., is one of three rhizobial genotypes identified which nodulate and form nitrogen-fixing symbioses with Medicago ruthenica [(L.)Ledebour]. Int. J. Syst. Bacteriol.Int. J. Syst. Bacteriol. 48:13-22.
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WANG, E. T. , VAN BERKUM , P., BEYENE, D., SUI, X. H., CHEN, W. X. and
MART NEZ-ROMERO, E. 1998. Rhizobium huautlense sp. nov., a symbiont of
Sesbania herbacae which has a close phylogenetic relationship with Rhizobium galegae. Int. J. Syst. Bacteriol. 48:687-699.
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TULLY, R. E., VAN BERKUM, P., LOVINS, K. W. and KEISTER, D. L. 1998.
Identification and Sequencing of a Cytochrome P-450 Gene Cluster from
Bradyrhizobium japonicum. Biochim. Biophys. Acta 1398:243-255.
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SANORIA, C.L., YADAV, J., AND VAN BERKUM, P. 1998. Feasibility of French bean
inoculation with exotic rhizobial strains. Ind. J. Agric. Chem. 31:33-
40.
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KOTOB, S. I., McLAUGHLIN, S. M., VAN BERKUM, P. and M. FASAL. 1999.
Characterization of two Perkesis spp. From the softshell clam, Mya arenaria using the small subunit ribosomal RNA gene. J. Eukaryot. Microbiol. 46:439-444.
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SATO, M. L., GARCIA-BLASQUEZ, C. and VAN BERKUM, P. 1999. Verification of
strain identity in Brazilian soybean inoculants by using the Polymerase Chain
Reaction. World J. Biotech. Microbiol. 15:387-391.
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VAN BERKUM, P., RUIHUA, F., CAMPBELL, T. A. and EARDLY, B. D. 1999. Some
issues of relevance in the taxonomy of rhizobia. pp. 267-269. In: Highlights
of Nitrogen Fixation Research. E. Martinez-Romero and G. Hernandez (eds.).
Kluwer Academic/Plenum Publishers, New York.
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WANG, E. T., VAN BERKUM, P., SUI, X. H., BEYENE, D., CHEN, W. X. and
MARTINEZ-ROMERO, E. 1999. Diversity of rhizobia associating with Amorpha
fruticosa isolated from Chinese soils and description of Mesorhizobium
amorphae sp. nov. Int J. Syst. Bacteriol. 49:51-65.
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KEISTER, D., TULLEY, R. E. and VAN BERKUM, P. 1999. A cytochrome P450 cluster
in the Rhizobiaceae. J. Gen. Appl. Microbiol. 45:301-303.
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VAN BERKUM, P. and FUHRMANN, J. J. 2000. Evolutionary relationships among the
soybean bradyrhizobia reconstructed from 16S rRNA and Internally Transcribed
Spacer sequence divergence. Int. J. Syst. Evol. Microbiol. 50:2165-
2172.
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CAMARA, P. S., O'NEILL, N. R., VAN BERKUM, P. B., PALM, M. E. and P. H.
DERNOEDEN. 2000. Ophiosphaerella agrostis sp. nov. and its relationship to
other species of Ophiosphaerella. Mycologia. 92:317-325.
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ROBINSON, K. O., BEYENE , D., VAN BERKUM, P., KNIGHT-MASON, R. and BHARDWAJ,
H. L. 2000. Variability in plant-microbe interaction between Lupinus lines and Bradyrhizobium strains. Plant Science 159:257-264.
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FARR, D. F., O'NEILL, N. O. and VAN BERKUM, P. 2000. Morphological and
molecular studies on Dendryphion penicillatum and Pleospora papaveracea, pathogens of Papaver somniferum. Mycologia 92:145-153.
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VAN BERKUM, P., FUHRMANN, J. J. and EARDLY, B. D. 2000. Phylogeny of rhizobia.
In: Pedrosa, F. O, Hungria, M., Yates, G. and Newton, W. E. (Eds.), Nitrogen
Fixation: From Molecules to Crop Productivity, pp. 165-169. Kluwer Academic
Publishers, Dordrecht.
-
VELAZQUEZ, E., MARTINEZ-ROMERO, E., RODRIGUEZ-NAVARRO, D., TRUJILLO, M., DAZA,
A., MATEOS, P. F., MARTINEZ-MOLINA, E., and VAN BERKUM, P. 2001.
Characterization of rhizobial isolates of Phaseolus vulgaris by staircase
electrophoresis of low molecular weight RNA. Appl. Environ. Microbiol.
67:1008-1010.
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VAN BERKUM, P. and FUHRMANN, J.J. 2001. Characterization of soybean
bradyrhizobia for which serogoup affinities have not been identified. Can. J.
Microbiol. 47:519-525.
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RHODES, M, KATOR, H., KOTOB, S. I., VAN BERKUM, P., KAATTARI, I., VOGELBEIN,
W., FLOYD, M., BUTLER, R., QUINN, F., and OTTINGER. 2001. A unique
Mycobacterium sp. resembling Mycobacterium marinum and Mycobacterium ulcerans isolated from striped bass (Morone saxatilis). Emerging Infectious Diseases 7:896-899.
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CAMARA, M. P., PALM, M. E., VAN BERKUM, P., and STEWART, E. 2001. Systematics
of Paraphaeosphaeria: A molecular and morphological approach. Mycological
Research 105:41-56.
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VAN BERKUM, P., REHNER, S. and EARDLY, B. D. 2002. How well does 16S rRNA gene
phylogeny represent evolutionary relationships among the rhizobia. In:
Nitrogen Fixation: Global Perspectives, Finan, T. M., O'Brian, M. R., Layzell,
D. B., Vessey, J. K. and Newton, W. E. (Eds.), pp. 71-74. CAB International,
New York.
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VAN BERKUM, P. and EARDLY, B. D. 2002. The aquatic budding bacterium
Blastobacter denitrificans is a nitrogen-fixing symbiont of Aeschynomene
indica. In: Nitrogen Fixation: Global Perspectives, Finan, T. M., O'Brian, M.
R., Layzell, D. B., Vessey, J. K. and Newton, W. E. (Eds.), pp. 520. CAB
International, New York.
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BAO, J. R., FRAVEL, D. R., O'NEILL, N. R., LAZAROVITS, G. and VAN BERKUM, P.
2002. Genetic analysis of pathogenic and nonpathogenic Fusarium oxysporum
from tomato plants. Can J. Bot. 80:271-279.
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VAN BERKUM, P. and EARDLY, B. D. 2002. The aquatic budding bacterium
Blastobacter denitrificans is a nitrogen-fixing symbiont of Aeschynomene
indica. Appl. Environ. Microbiol. 68:1132-1136.
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COUSIN, C., GRANT, J., DIXON, F., BEYENE, D. and VAN BERKUM, P. 2002.
Influence of Biosolids compost on the bradyrhizobial genotypes recovered from
cowpea and soybean nodules. Arch. Microbiol. 178: 161-164.
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TURANO, F. J., PANTA, G. R., ALLARD, M. W. and VAN BERKUM, P. 2002. The
putative glutamate receptors from plants are related to two subfamilies of
animal neurotransmitter receptors via distinct evolutionary mechanisms. Mol.
Biol. Evol. 18:1417-1420.
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CAMARA, M. P. S., O'NEILL, N. R., and VAN BERKUM, P. 2002. Phylogeny of
Stemphylium based on ITS and glyceraldehyde-3-phosphate sequences. Mycologia 94:660-672.
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PARKER, M. A., LAFAY, B., BURDON, J. J. and VAN BERKUM, P. 2002. Conflicting
phylogeographic patterns in rRNA and nifD indicate regionally restricted gene transfer in Bradyrhizobium. Microbiology 148:2557-2565.
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WANG, E., ROGEL, A., SUR, X. H., CHEN, W. X., MARTINEZ-ROMERO, E. and VAN
BERKUM, P. 2002. Mesorhizobium amorphae, a rhizobial species that nodulates
Amorpha fruticosa, is native to American soils. Arch. Microbiol. 178:301-305.
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FARRAND, S. K., VAN BERKUM, P., and OGER, P. 2003. Agrobacterium is a definable genus of the Family Rhizobiaceae. Int. J. Syst. Evol. Microbiol. (in press).
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VAN BERKUM, P., TEREFEWORK, Z., PAULIN, L., SUOMALAININ, S., LINDSTROM, K. and
EARDLY, B. D. 2003. Discordant phylogenies with the rrn loci of rhizobia. J. Bacteriol. 185:2988-2998.
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ABOU-SHANAB, R. A., ANGLE, J. S., DELORME, T. A., CHANEY, R. L., VAN BERKUM, P., MOAWAD, H., GHANEM, K., GHOZLAN, H. A. 2003. Rhizobacterial effects on nickel extraction from soil and uptake by Alyssum murale. New Phytol. 158: 219-224.
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BEYENE, D., KASSA, S., AMPY, F., ASSEFFA, A., GEBREMEDHIN, T. and VAN BERKUM,
P. 2003. Ethiopian soils harbor natural populations of rhizobia that form
symbioses with common bean (Phaseolus vulgaris L.). Arch Microbiol.
(submitted).
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