Plant-growth-promoting rhizobacteria.

  title={Plant-growth-promoting rhizobacteria.},
  author={Ben Lugtenberg and Faina D. Kamilova},
  journal={Annual review of microbiology},
Several microbes promote plant growth, and many microbial products that stimulate plant growth have been marketed. In this review we restrict ourselves to bacteria that are derived from and exert this effect on the root. Such bacteria are generally designated as PGPR (plant-growth-promoting rhizobacteria). The beneficial effects of these rhizobacteria on plant growth can be direct or indirect. This review begins with describing the conditions under which bacteria live in the rhizosphere. To… 

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