Oxygen Deficiency in Spartina alterniflora Roots: Metabolic Adaptation to Anoxia

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Science  23 Oct 1981:
Vol. 214, Issue 4519, pp. 439-441
DOI: 10.1126/science.214.4519.439


The aerenchyma (air-space) tissue in the wetland macrophyte Spartina alterniflora conveys sufficient oxygen to roots for predominately aerobic respiration in moderately, but not highly, reduced substrates. Continuously flooded plants survive by respiring anaerobically, although growth is decreased. Two metabolic adaptations to flooding are displayed in this species, depending on the degree of soil reduction.