Siderophore production and induction of iron-regulated proteins by a microorganism from rhizosphere of barley.
This study provides new information on the Fe uptake system capable of supporting growth of the organism. Pseudomonas fluorescens isolated from the rhizosphere of barley, a gramineous plant, produced a siderophore under iron-limiting conditions. Its chemical structure was identified as pyochelin, on the basis of 1H and 13C NMR data of a stable methyl ester derivative. The same iron-limiting conditions induced a new set of outer membrane proteins (75 and 55 kDa), consistent with a siderophore-mediated iron-uptake system.
Terano
Hiroshi
H
Faculty of Life Sciences, Toyo University, Itakura, Gunma 374-0193, Japan. teranoh@itakura.toyo.ac.jp
Nomoto
Kyosuke
K
Takase
Shigehiro
S
D001425:Bacterial Outer Membrane Proteins / Q000096:biosynthesis; D004591:Electrophoresis, Polyacrylamide Gel; D005290:Ferric Compounds / Q000378:metabolism*; D001467:Hordeum / Q000382:microbiology*; D007502:Iron Chelating Agents / Q000737:chemistry; D008970:Molecular Weight; D019906:Nuclear Magnetic Resonance, Biomolecular; D010636:Phenols / Q000737:chemistry* / Q000378:metabolism*; D011551:Pseudomonas fluorescens / Q000378:metabolism*; D017262:Siderophores / Q000096:biosynthesis* / Q000737:chemistry*; D013844:Thiazoles
D001425:Bacterial Outer Membrane Proteins; D005290:Ferric Compounds; D007502:Iron Chelating Agents; D010636:Phenols; D017262:Siderophores; D013844:Thiazoles; C025316:pyochelin