Uptake of molybdenum and vanadium by a nitrogen-fixing soil bacterium using siderophores

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Siderophores in environmental research: roles and applications (2014, background): “The role of siderophores is primarily to scavenge Fe, but they also form complexes with other essential elements (i.e. Mo, Mn, Co and Ni) in the environment and make them available for microbial cells (Bellenger et al., 2008; Braud et al., 2009a,b).”
Molybdenum limitation of asymbiotic nitrogen fixation in tropical forest soils (2009, unknown): “Control (LT) 40.99 (1:87) 1.44 (0:07) 397 (28) 53 (7) 2,698:81:1:43 [117, 8] CNitrogen (LT) 44.82 (2:77) 1.66 (0:11) 497 (47) 55 (9) 2,425:76:1:39 [199, 8] CPhosphorus (LT) 35.20 (2:36) 1.35 (0:08) 907 (76) 118 (12) 1,116:36:1:44 [133, 16 ] CMicronutrient (LT) 38.51 (2:56) 1.32 (0:09) 469 (43) 215 ”
Metallophores and Trace Metal Biogeochemistry (2015, background): “In addition, at high molybdate concentrations ([10-6–10-5 M), the uptake of Mo is stopped, possibly to avoid the toxic effects of the metal (Bellenger et al. 2008a; Cornish and Page 2000).”
Biological nitrogen fixation by alternative nitrogenases in terrestrial ecosystems: a review (2020, methodology): “…manage cellular metal budgets for N2 fixation is largely based on studies of the soil-dwelling, aerobic heterotroph Azotobacter vinelandii (Bellenger et al. 2008a, 2011; Bishop et al. 1986; Jacobitz and Bishop 1992; Pau et al. 1993) and the freshwater heterocystous cyanobacterium Anabaena…”