Journal
BIOLOGIA PLANTARUM
Volume 48, Issue 4, Pages 575-581Publisher
SPRINGER
DOI: 10.1023/B:BIOP.0000047157.49910.69
Keywords
ascorbate peroxidase; catalase; Glycine max; peroxidase; polyphenol oxidase; salinity; superoxide dismutase
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The effects of different concentrations of NaCl on the activities of antioxidative enzymes in the shoots and roots of soybean ( Glycine max [ L.] Merr cv. Pershing) inoculated or not with an arbuscular mycorrhizal fungus, Glomus etunicatum Becker & Gerdemann, were studied. Furthermore, the effect of salt acclimated mycorrhizal fungi on the antioxidative enzymes in soybean plants grown under salt stress ( 100 mM NaCl) was investigated. Activities of superoxide dismutase (SOD), peroxidase (POD), and catalase ( CAT) were increased in the shoots of both mycorrhizal (M) and nonmycorrhizal (NM) plants grown under NaCl salinity. Salinity increased SOD activity in the roots of M and NM plants, but had no effect on CAT and polyphenol oxidase activities in the roots. M plants had greater SOD, POD and ascorbate peroxidase activity under salinity. Under salt stress, soybean plants inoculated with salt pre-treated mycorrhizal fungi showed increased SOD and POD activity in shoots, relative to those inoculated with the non pre-treated fungi.
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