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Biosci Biotechnol Biochem. 1998 May;62(5):1018-21.

Molecular cloning and expression patterns of Cu/Zn-superoxide dismutases in developing soybean seeds.

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Genetic Engineering Laboratory, National Food Research Institute, Ministry of Agriculture, Forestry, and Fisheries, Ibaraki, Japan.


Assuming that the amount of superoxide radicals generated in vivo correlates with the production of ergastic substances such as storage proteins, the coordinated response of detoxication enzymes such as superoxide dismutases is largely exploited to understand the self-defense systems of plant. Here we examined expression of the genes for superoxide dismutases during seed development of soybean. The cDNAs encoding a cytosolic copper/zinc form and an iron form of the above enzyme have been cloned and then employed as probes, separately. Northern blotting results suggested that both superoxide dismutase mRNAs are expressed at the maximum level, preceding a developmental stage when mRNA encoding glycinin, soybean 11S-storage protein, at the maximum.

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