J Integr Plant Biol. ›› 1994, Vol. 36 ›› Issue (2): -.

• Research Articles •    

Comparative Study on the Accumulation of Storage Protein in the Soybean Seeds with High and Low Protein Contents

Xu Shou- min, Miao Yi-nong, Zu Chang-fu, Liu Xue-jun, Xu-Bao and Zheng Hui-yu   

Abstract: The difference in storage protein accumulation between two soybean was compared by SDS-PAGE and electron microscopy. The results showed that the “Gongjiao 8059-3” (protein content 45 %) was more rapid in protein accumulation rate and higher in protein content than that in “GD 1515” (protein content 35 %) during cotyledon development. The subunits (7S and l1S) of the storage protein accumulated earlier in “Gongjiao 8059-3” than in “GD 1515”. Under electron microscope, the protein accumulated in vacuoles was similar between the two cultivars, but the protein density was higher and the volume of protein bodies was larger in cells after mid developing stage in “Gongjiao 8059-3”. These results showed that difference in protein contents may be based on biochemical and structural alterations.

Key words: Soybean, Seed storage protein, Subunit, Acccumulation rate of protein

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