Pseudomonas chlororaphis subsp. aurantiaca explained

Pseudomonas chlororaphis subsp. aurantiaca is an orange Gram-negative soil bacterium, originally isolated from the rhizosphere soil of potatoes. It produces di-2,4-diacetylfluoroglucylmethan, which is antibiotically active against Gram-positive organisms.^[1] It has shown potential for use as a biocontrol agent against plant-pathogenic microbes.^[2] Originally described as Pseudomonas aurantiaca based on 16S rRNA analysis it has been placed in the P. chlororaphis group.^[3]

Isolates found in Ukraine living in root symbiosis produce 2,4-Diacetylphloroglucinol to control Fusarium oxysporum.^{[4] [5] [6]}

Notes and References

1. Esipov SE, Adanin VM, Baskunov BP, Kiprianova EA, Garagulia AD . [New antibiotically active fluoroglucide from Pseudomonas aurantiaca] . Russian . Antibiotiki . 20 . 12 . 1077–81 . 1975 . 1225181 .
2. Felker P, Medina D, Soulier C, Velicce G, Velarde M, Gonzalez C . A survey of environmental and biological factors (Azospirillum spp., Agrobacterium rhizogenes, Pseudomonas aurantiaca) for their influence in rooting cuttings of Prosopis alba clones . J Arid Environ . 61 . 2 . 227–247 . 2005 . 10.1016/j.jaridenv.2004.09.010 . 2005JArEn..61..227F . etal.
3. Anzai Y, Kim H, Park JY, Wakabayashi H, Oyaizu H . Phylogenetic affiliation of the pseudomonads based on 16S rRNA sequence . International Journal of Systematic and Evolutionary Microbiology . 50 . 4 . 1563–1589 . July 2000 . 10939664 . 10.1099/00207713-50-4-1563 .
4. Garagulia AD, Kiprianova EA, Boĭko OI . [Antibiotic action of bacteria of the genus Pseudomonas on phytopathogenic fungi]. Ukrainian . Mikrobiolohichnyi Zhurnal . 36 . 2 . 197–202 . 1974 . 4465652 . Antibiotic effect of bacteria from the genus Pseudomonas on phytopathogenic fungi .
5. [Effect of antagonistic bacteria on development of wheat root rot] . Ukrainian . Pidoplichko VN, Garagulya A . . 1974 . . 36 . 599–602.
6. Cook RJ, Thomashow LS, Weller DM, Fujimoto D, Mazzola M, Bangera G, Kim DS . Molecular mechanisms of defense by rhizobacteria against root disease . Proceedings of the National Academy of Sciences of the United States of America . 92 . 10 . 4197–201 . May 1995 . 11607544 . 41910 . 10.1073/pnas.92.10.4197 . free . 1995PNAS...92.4197C .