Protein Body Formation in Cotyledons of Developing Cowpea (Vigna unguiculata) Seeds

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Abstract
The sequence of protein body formation in cotyledonary cells of developing cowpea seeds has been followed by electron microscopy. Some protein bodies are formed by sub-division of the main vacuoles of the cotyledon cell but most are formed by expansion of cytoplasmic vesicles which may originate from Golgi bodies. Protein deposition is accompanied by a massive proliferation of rough endoplasmic reticulum and Golgi body production.