Baldani, J.I. and V.L.D. Baldani (2005), “History on the biological nitrogen fixation research in graminaceous plants: Special emphasis on the Brazilian experience”, Anais da Academia Brasileira de Ciencias, No. 77, pp. 549-579.
Barriuso, J., et al. (2008), “Ecology, genetic diversity and screening strategies of plant growth promoting rhizobacteria (PGPR)”, in: I. Ahmad, J. Pichtel and S. Hayat (eds.),
Plant-Bacteria Interactions: Strategies and Techniques to Promote Plant Growth, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany.
Bashan, Y. and L.E. de-Bashan (2010), “How the plant growth-promoting bacterium Azospirillum promotes plant growth - A critical assessment”, in: D. Sparks (ed.), Advances in Agronomy, Vol. 108, pp. 77-136, Academic Press, Burlington.
Bashan, Y. and G. Holguin (1997), “Azospirillum-plant relationships: Environmental and physiological advances (1990-1996)”, Canadian Journal of Microbiology, No. 43, pp. 103-121.
Bashan, Y., G. Holguin and L. de-Bashan (2004), “Azospirillum-plant relationships: Physiological, molecular, agricultural, and environmental advances (1997-2003)”, Canadian Journal of Microbiology, No. 50, pp. 521-577.
Bottini, R., F. Cassan and P. Piccoli (2004), “Gibberellin production by bacteria and its involvement in plant growth promotion and yield increase”, Applied Microbiology Biotechnology, No. 65, pp. 497-503.
Buscot, F. and A. Varma (eds.) (2010), Micro-Organisms in Soils: Roles in Genesis and Functions, Springer, Lexington.
Cassan, F., et al. (2009), “Cadaverine production by Azospirillum brasilense and its possible role in plant growth promotion and osmotic stress mitigation”, European Journal of Soil Biology, No. 45, pp. 12-19.
Cohen, A.C., et al. (2009), “Participation of abscisic acid and gibberellins produced by endophytic Azospirillum in the alleviation of drought effects in maize”, Botany, No. 87, pp. 455-462.
Costacurta, A. and J. Vanderleyden (1995), “Synthesis of phytohormones by plant-associated bacteria”, Critical Reviews in Microbiology, No. 21, pp. 1-18.
Declerck, S., D.-G. Strullu and J.A. Fortin (eds.) (2010), In Vitro Culture of Mycorrizas, Springer, Lexington.
Dessaux, Y., P. Hissinger and P. Lemanceau (eds) (2010), Rhizosphere: Achievements and Challenges, Springer.
Dobereiner, J. and L. Day (1976), “Associative symbiosis in tropical grasses: Characterization of micro-organisms and dinitrogen fixing sites”, in: W.E. Newton and C.J. Nyman (eds.), Proceedings of the First International Symposium on Nitrogen Fixation, Washington State University Press, Pullman, pp. 518-538.
Fernandez, L.A., et al. (2012), “Pseudomonas spp. isolates with high
phosphate-mobilizing potential and root colonization properties from agricultural bulk soils under no-till management in Argentina”, Biology and Fertility of Soils, www.springerlink.com/content/7097p7hl64433852
Giraud, E., et al. (2007), “Legume symbioses: Absence of nod genes in photosynthetic bradyrhizobia”, Science, No. 316, pp. 1 307-1 312.
Glick, B.R., et al. (2007), “Promotion of plant growth by ACC deaminase-producing soil bacteria”, European Journal of Plant Pathology, No. 119, pp. 329-339.
Glick, B.R. (2004), “Bacterial ACC deaminase and the alleviation of plant stress”, Advances in Applied Microbiology, No. 56, pp. 291-312.
Glick, B.R., et al. (1999), Biochemical and Genetic Mechanisms Used by Plant Growth Promoting Bacteria, Imperial College Press, London.
Gray, E.J. and D.L. Smith (2005), “Intracellular and extracellular PGPR: Commonalities and distinctions in the plant-bacterium signaling processes”, Soil Biology & Biochemistry, No. 37, pp. 395-412.
Hontzeas, N., et al. (2005), “Evidence for horizontal gene transfer (HGT) of ACC deaminase genes”, Applied and Environmental Microbiology, No. 71, pp. 7 556-7 558.
Kloepper, J.W. and M.N. Schroth (1978), “Plant growth-promoting rhizobacteria on
radishes”, Fourth International Conference on Plant Pathogen Bacteria, Angers, France, Vol. 2, pp. 879-882.
Lugtenberg, B. and F. Kamilova (2009), “Plant-growth-promoting rhizobacteria”, Annual Review of Microbiology, No. 63, pp. 541-556.
Madsen, L.H., et al. (2010), “The molecular network governing nodule organogenesis and infection in the model legume Lotus japonicas”, Nature Communications, No. 1,
Maillet, F., et al. (2011), “Fungal lipochitooligosaccharide symbiotic signals in arbuscular mycorrhiza”, Nature, No. 469, pp. 58-64.
Molina-Favero, C., et al. (2008), “Aerobic nitric oxide production by Azospirillum Brasilense Sp245 and its influence on root architecture in tomato”, Molecular Plant-Microbe Interactions, No. 21, pp. 1 001-1 009.
OECD (Organisation for Economic Cooperation and Development) (1995), Safety Considerations for Biotechnology: Scale-Up of Micro-Organisms as Biofertilizers, OECD Publishing, Paris.
Perrig, D., et al. (2007), “Plant-growth-promoting compounds produced by two agronomically important strains of Azospirillum Brasilense, and implications for inoculant formulation”, Applied Microbiology and Biotechnology, No. 75, pp. 1 1431 150.
Richardson, A.E. and R.J. Simpson (2011), “Soil micro-organisms mediating phosphorus availability update on microbial phosphorus”, Plant Physiology, No. 156, pp. 989-96.
Saxena, A.K. and K.V.B.R. Tilak (1998), “Free-living nitrogen fixers: Its role in crop production”, in: A.K. Verma (ed.), Microbes for Health, Wealth and Sustainable Environment, Malhotra Publ Co, New Delhi, pp. 25-64.
Schultze, M. and A. Kondorosi (1998), “Regulation of symbiotic root nodule development”, Annual Review of Genetics, No. 32, pp. 33-57.
Smith, S.E. and D.J. Read (2008), Mycorrizal Simbiosis, Academic Press.
Solans, M. (2007), “Discaria trinervis-Frankia symbiosis promotion by saprophytic actinomycetes”, Journal of Basic Microbiology, No. 47, pp. 243-250.
Solans, M., G. Vobis and L.G. Wall (2009), “Saprophytic actinomycetes promote nodulation in Medicago sativa - Sinorhizobium meliloti symbiosis in the presence of high N”, Journal of Plant Growth Regulations, No. 28, pp. 106-114.
Staley, J.T. and A. Konopka (1985), “Measurement of in situ activities of nonphotosynthetic micro-organisms in aquatic and terrestrial habitats”, Annual Review of Microbiology, No. 39, pp. 321-346.
Strzelczyk, E., M. Kampert and C.Y. Li (1994), “Cytokinin-like substances and ethylene production by Azospirillum in media with different carbon sources”, Microbiological Research, No. 149, pp. 55-60.
Torsvik, V. and L. Ovreas (2002), “Microbial diversity and function in soil: From genes to ecosystems”, Current Opinion in Microbiology, No. 5, pp. 240-245.
Van Dommelen, A., et al. (2009), “Wheat growth promotion through inoculation with an ammonium-excreting mutant of Azospirillum brasilense”, Biology and Fertility of Soils, No. 45, pp. 549-553.
Verma, J.P., et al. (2010), “Impact of plant growth promoting rhizobacteria on crop production”, International Journal of Agricultural Research, No. 5, pp. 954-983.
Vessey, J.K. (2003), “Plant growth promoting rhizobacteria as biofertilizers”, Plant and Soil, Vol. 255 (Suppl 2), pp. 571-586.
Werner, D. (ed.) (1992), Symbiosis of Plants and Microbes, Chapman and Hall, London.