Siderophore production by marine-derived fungi.
Siderophore production by marine-derived fungi has not been extensively explored. Three studies have investigated the ability of marine-derived fungi to produce siderophores in response to iron limitation [(Vala et al. in Indian J Mar Sci 29:339-340, 2000; Can J Microbiol 52:603-607, 2006); Baakza et al. in J Exp Mar Biol Ecol 311:1-9, 2004]. In all, 24 of 28 marine fungal strains were found to secrete hydroxamate or carboxylate siderophores; no evidence was found for production of catecholate siderophores. These studies did not determine the structures of the iron-binding compounds. More recently, a study of the natural products secreted by a marine Penicillium bilaii revealed that this strain produced the rare catecholate siderophore pistillarin when grown under relatively high iron concentrations (Capon et al. J Nat Prod 70:1746-1752, 2007). Additionally, the production of rhizoferrin by a marine isolate of Cunninghamella elegans (ATCC36112) is reported in this manuscript. The current state of knowledge about marine fungal siderophores is reviewed in light of these promising results.
Department of Natural Sciences, Northeastern State University, Tahlequah, OK 74464, USA.
Brian
B
Holinsworth
Jessica D
JD
Martin
D005290:Ferric Compounds / Q000378:metabolism; D005658:Fungi / Q000378:metabolism*; D008386:Marine Biology; D017262:Siderophores / Q000096:biosynthesis*; D014871:Water Microbiology
D005290:Ferric Compounds; D017262:Siderophores; C087496:rhizoferrin