Plant growth-promoting bacterial endophytes

Microbiol Res. 2016 Feb;183:92-9. doi: 10.1016/j.micres.2015.11.008. Epub 2015 Nov 25.


Bacterial endophytes ubiquitously colonize the internal tissues of plants, being found in nearly every plant worldwide. Some endophytes are able to promote the growth of plants. For those strains the mechanisms of plant growth-promotion known to be employed by bacterial endophytes are similar to the mechanisms used by rhizospheric bacteria, e.g., the acquisition of resources needed for plant growth and modulation of plant growth and development. Similar to rhizospheric plant growth-promoting bacteria, endophytic plant growth-promoting bacteria can act to facilitate plant growth in agriculture, horticulture and silviculture as well as in strategies for environmental cleanup (i.e., phytoremediation). Genome comparisons between bacterial endophytes and the genomes of rhizospheric plant growth-promoting bacteria are starting to unveil potential genetic factors involved in an endophytic lifestyle, which should facilitate a better understanding of the functioning of bacterial endophytes.

Keywords: ACC deaminase; Bacterial genomes; Endophytes; Phytoremediation; Plant growth-promotion.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Agriculture
  • Bacteria / genetics
  • Bacteria / growth & development*
  • Bacteria / metabolism
  • Biodegradation, Environmental
  • Endophytes / genetics
  • Endophytes / growth & development
  • Endophytes / physiology*
  • Genome, Bacterial
  • Plant Growth Regulators / metabolism
  • Plants / microbiology*
  • Soil / chemistry
  • Symbiosis


  • Plant Growth Regulators
  • Soil