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Soil Science Society of America Journal Abstract -

Utilization of Organic Compounds by Germinating Soybean Seeds1


This article in SSSAJ

  1. Vol. 38 No. 4, p. 594-597
    Received: Dec 14, 1973
    Accepted: Mar 18, 1974

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  1. A. A. Zwarun2



Surface-sterilized soybean seeds (Glycine max L.) were placed inside sterile vials containing 5 ml of sterile, deionized water and 1µCi amounts of various 14C-labeled organic compounds. The atmosphere inside the sealed vials was analyzed for 14CO2 every hour for 12 hours. The compounds tested were uniformly labeled glucose, fructose, maltose, lysine, glycerol, and urea; glycine labeled in the 1 or the 2 position; and citric acid labeled in the 1 and 5 positions. All compounds tested were metabolized by germinating soybean seeds as evidenced by 14CO2 evolution. However, with the exception of urea, the amount of 14CO2 produced was small. Urea was metabolized very rapidly and very extensively. It appears that soybean seeds can metabolize external organic molecules within 1 hour of exposure to moisture.

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