PGPR

PGPR ( Plant growth-promoting rhizobacteria ) are rhizobacteria that promote plant growth (ancient Greek ῥίζα rhiza = root and βακτήριον baktērion = rods). These bacteria enter into a symbiosis with plant roots in the soil space close to the roots. B. Pseudomonas putida, also associated with arbuscular mycorrhizal fungi . Ethene is a phytohormone that controls many plant physiological processes. However, if too much ethene is produced by the plant, e.g. B. in response to an overdose of artificial mineral fertilizer , the plant inhibits its growth itself. The PGPR are u. a. able to regulate the ethene level in the plant and thus stimulate its growth.

Individual evidence

↑ Veronica Artursson, Roger D. Finlay, Janet K. Jansson: Interactions between arbuscular mycorrhizal fungi and bacteria and their potential for stimulating plant growth. In: Environmental Microbiology, Volume 8, No. 1, 2006, pp. 1-10, PMID 16343316 .
↑ Bin Goo Kang et al .: Use of plant growth-promoting rhizobacteria to control stress responses of plant roots. - In: Plant Biotechnology Reports 4 (3), 2010, pp. 179-183.

[1] Veronica Artursson, Roger D. Finlay, Janet K. Jansson: Interactions between arbuscular mycorrhizal fungi and bacteria and their potential for stimulating plant growth. In: Environmental Microbiology, Volume 8, No. 1, 2006, pp. 1-10, PMID 16343316 .

[2] Bin Goo Kang et al .: Use of plant growth-promoting rhizobacteria to control stress responses of plant roots. - In: Plant Biotechnology Reports 4 (3), 2010, pp. 179-183.