Consulta: (autoria:"VAN BERKUM, P.")
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VAN BERKUM, P. Expression of uptake hydrogenase and hydrogen oxidation during heterotrophic growth of Bradyrhizobium japonicum. J. Bacteriol., v.169, n.10, p.4565-4569, 1987.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P. Evaluation of acetylene reduction by excised roots for the determination of nitrogen fixation in grasses. Soil Biol. Biochem., v. 12, p. 141-145, 1980.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P.; SLOGER, C. Comparing time course profiles of immediate acetylene reduction by grasses and legumes. Appl. Environ. Microbiol., v.41, n.1, p.184-189, 1981.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P.; SLOGER, C. Interaction of combined nitrogen with the expression of root-associated nitrogenase activity in grasses and with the development of N2 fixation in soybean (Glycine max Merr. L.). Plant Physiol., v. 72, n. 3, p. 741-745, 1983.
Biblioteca(s): Embrapa Agrobiologia.

TJEPKEMA, J.; VAN BERKUM, P. Acetylene reduction by soil cores of maize and sorghum in Brazil. Appl. Environ. Microbiol., v.33, n.3, p.626-629, 1977.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P.; SLOGER, C. Autoanalytical procedure for the determination of allantoin and allantoic acid in soybean tissue. Plant Physiol., v.73, p.511-513, 1983.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P. B. W. Nitrogenase activity associated with tropical grass roots and some effects of combined nitrogen on Spirillum lipoferum beijerinck. London: University of London, March, 1978. 184p. Tese de Doutorado. Orientada por: J. M. Day.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P.; SLOGER, C. Ontogenetic variation of nitrogenase, nitrate reductase, and glutamine synthetase activities in Oryza sativa. Plant Physiol., v.68, p.722-726, 1981.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P.; SLOGER, C. Physiology of root-associated nitrogenase activity in Oryza sativa. Plant Physiol., v.69, n.5, p.1161-1164, 1982.
Biblioteca(s): Embrapa Agrobiologia.

SLOGER, C.; VAN BERKUM, P. Endogenous ethylene production is a potential problem in the measurement of nitrogenase activity associated with excised corn and sorghum roots. Plant Physiol., v. 88, n. 1, p. 115-118, 1988.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P.; SLOGER, C. Immediate acetylene reduction by excised grass roots not previously preincubated at low oxygen tensions. Plant Physiol., v.64, p.739-743, 1979.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P.; SLOGER, C. Hydrogen oxidation by the host-controlled uptake hydrogenase phenotype of Bradyrhizobium japonicum in symbiosis with soybean host plants. Appl. Environ. Microbiol., v.57, n.6, p.1863-1865, 1991.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P.; SLOGER, C. A critical evaluation of the characteristics of associative nitrogen fixation in grasses. In: Proc. Int. Symp. Nitrogen and the Environment., v., p.139-159, 1985.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P.; MAIER, R. J. Lack of carbon substrate repression of uptake hydrogenase activity in Bradyrhizobium japonicum SR. J. Bacteriol., v.170, n.4, p.1962-1964, 1988.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P.; KEYSER, H. H. Anaerobic growth and denitrification among different serogroups of soybean rhizobia. Appl. Environ. Microbiol., v.49, n.4, p.772-777, 1985.
Biblioteca(s): Embrapa Agrobiologia.

NEYRA, C. A.; VAN BERKUM, P. Nitrate reduction and nitrogenase activity in Spirillum lipoferum. Can. J. Microbiol., v.23, n.3, p.306-310, 1977.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P.; BOHLOOL, B. B. Evaluation of nitrogen fixation by bacteria in association with roots of tropical grasses. Microbiol. Rev., v.44, n.3, p.491-517, 1980.
Biblioteca(s): Embrapa Agrobiologia.

KEYSER, H. H.; VAN BERKUM, P.; WEBER, D. F. A comparative study of the physiology of symbiosis formed by Rhizobium japonicum with Glycine max, Vigna unguiculata, and Macroptilium atropurpureum. Plant Physiol., v. 70, n. 6, p. 1626-1630, 1982.
Biblioteca(s): Embrapa Agrobiologia.

NAUTIYAL, C. S; HEGDE, S. V.; VAN BERKUM, P. Nodulation, nitrogen fixation, and hydrogen oxidation by pigeon pea Bradyrhizobium spp. in symbiotic association with pigeon pea, cowpea, and soybean. Appl. Environ. Microbiol., v.54, n.1, p.94-97, 1988.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P.; MCCLUNG, C. R.; SLOGER, C. Some pertinent remarks on N2 fixation associated with the roots of grasses. In: Graham, P.H. & Harris, S.C., eds. In: Biological Nitrogen Fixation Technology for Tropical Agriculture.. Centro Internacional de Agricultura Tropical, Cali, Colombia., 1982. p.513-525.
Biblioteca(s): Embrapa Agrobiologia.

VARGAS, A. A. T.; DENARDIN, N. D.; VAN BERKUM, P. Tolerancia de rizobios nativos do feijoeiro a antibioticos e sua relação com fatores de acidez do solo. R. Brasileira Ciência do Solo, v. 16, n. 3, p. 331-336, 1992.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P.; SLOGER, C.; WEBER, D. F.; CREGAN, P. B.; KEYSER, H. H. Relationship between ureide N and N2 fixation, aboveground N accumulation, acetylene reduction, and nodule mass in greenhouse and field studies with Glycine max L. (Merr). Plant Physiol., v.77, p.53-58, 1985.
Biblioteca(s): Embrapa Agrobiologia.

MCCLUNG, C. R.; VAN BERKUM, P.; DAVIS, R. E.; SLOGER, C. Enumeration and localization of N2-fixing bacteria associated with roots of Spartina alterniflora Loisel. Appl. Environ. Microbiol., v.45, n.6, p.1914-1920, 1983.
Biblioteca(s): Embrapa Agrobiologia.

CREGAN, P. B.; VAN BERKUM, P.; SLOGER, C.; ORELLANA, R. G. Heterosis of interspecific soybean hybrids for traits related to N2 fixation. Euphytica, v.40, p.89-96, 1989.
Biblioteca(s): Embrapa Agrobiologia.

NAUTIYAL, C. S.; VAN BERKUM, P.; SADOWSKY, M. J.; KEISTER, D. L. Cytochrome mutants of Bradyrhizobium induced by transposon Tn5. Plant Physiol., v.90, p.553-559, 1989.
Biblioteca(s): Embrapa Agrobiologia.

RUMJANEK, N. G.; DOBERT, R. C.; VAN BERKUM, P.; TRIPLETT, E. W. Common soybean inoculant strains in Brazil are members of Applied Environmental Microbiology, v. 59, n. 12, p. 4371-4373, 1993.
Biblioteca(s): Embrapa Agrobiologia.

ORELLANA, R. G.; REYNOLDS, S. L.; SLOGER, C.; VAN BERKUM, P. Specific effects of soybean mosaic virus on total N, ureide-N, and symbiotic N2-fixation activity in Glycine max and G. soja. Phytopathology, v.73, n.8, p.1156-1160, 1983.
Biblioteca(s): Embrapa Agrobiologia.

ABDEL BASIT, H.; ANGLE, J. S.; SALEM, S.; GEWAILY, E. M.; KOTOB, S. I.; VAN BERKUM, P. Phenotypic diversity among strains of Bradyrhizobium japonicum belonging to serogroup 110. Appl. Environ. Microbiol., v. 57, n. 5, p. 1570-1572, 1991.
Biblioteca(s): Embrapa Agrobiologia.

VAN BERKUM, P.; KOTOB, S. I.; BASIT, H. A.; SALEM, S.; GEWAILY, E. M.; ANGLE, J. S. Genotypic diversity among strains of Bradyrhizobium japonicum belonging to serogroup 110. Appl. Environ. Microbiol., v. 59, n. 9, p. 3130-3133, 1993.
Biblioteca(s): Embrapa Agrobiologia.