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.
Holinsworth
Brian
B
Department of Natural Sciences, Northeastern State University, Tahlequah, OK 74464, USA.
Martin
Jessica D
JD
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