Lee 1999 Limnol Oceanogr

Lee RW, Kraus DW, Doeller JE (1999) Oxidation of sulfide by Spartina alterniflora roots. Limnol Oceanogr 44: 1155-1159.

» Limnol Oceanogr 44: 1155-1159

Lee RW, Kraus DW, Doeller JE (1999) Limnol Oceanogr

Abstract: Root tips from the marsh grass Spartina alterniflora, collected from areas of high and low pore-water sulfide, exhibited a substantial capacity to catalyze sulfide oxidation, as determined by closed-chamber respirometry. A large proportion of this catalysis was apparently nonenzymatic and was higher in roots of plants from the high-sulfide versus the low-sulfide site. Activity exhibiting characteristics of enzymatic sulfide oxidation was significantly higher in plants from the low-sulfide site. Results from elemental analysis of root tissue were consistent with the theory that metals play a role in nonenzymatic catalysis. These results indicate that estuarine plants may detoxify environmental sulfide via sulfide oxidation. • Keywords: Environmental Physiology; Toxicology

• O2k-Network Lab: US AL Birmingham Kraus DW

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