Plant growth-promoting bacterial endophytes

• Published in: Microbiological research Vol. 183; pp. 92 - 99
• Main Authors: Santoyo, Gustavo, Moreno-Hagelsieb, Gabriel, del Carmen Orozco-Mosqueda, Ma, Glick, Bernard R.
• Format: Journal Article
• Language: English
• Published: Germany Elsevier GmbH 01.02.2016
• Subjects: ACC deaminase; Agriculture; Bacteria; Bacteria - genetics; Bacteria - growth & development; Bacteria - metabolism; Bacterial genomes; Biodegradation, Environmental; Endophytes; Endophytes - genetics; Endophytes - growth & development; Endophytes - physiology; genome; Genome, Bacterial; growth promotion; horticulture; lifestyle; Phytoremediation; plant growth; Plant Growth Regulators - metabolism; plant growth-promoting rhizobacteria; Plant growth-promotion; Plants - microbiology; rhizosphere bacteria; silviculture; Soil - chemistry; Symbiosis; tissues; Endophytes; Bacterial genomes; Plant growth-promotion; ACC deaminase; Phytoremediation
• ISSN: 0944-5013; 1618-0623
• DOI: 10.1016/j.micres.2015.11.008

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.