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KMID : 0381920010310040347
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Korean Journal of Microscopy
2001 Volume.31 No. 4 p.347 ~ p.354
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Legumin Accumulation in Endoplasmic Reticulum Cisternae at Early Stage of Seed Development and Protein Body Transformation in Pea Cotyledon Cells
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Jeong Byung-Kap
Lee Sun-Hee
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Abstract
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Immunoelectron microscopy of storage protein at early stage of seed development showed legumin was firstly accumulated protein in between endoplasmic reticulum (ER) cisternae, and these accumulates were differentiated into protein body (PB) by transformation at later stage. Thin sections of pea cotyledons during the later stages of seed maturation showed three morphologically different types of protein bodies. One of these, presented as rough-surfaced cisternae with terminal dilations, which contained protein deposits and were often found interdigitated between stacks of rough endoplasmic reticulum. Conventional electron microscopy at earlier stages of cotyledon development showed this protein body type initially developed from the rough ER. This transformation of endoplasmic reticulum into a protein body is believed to represent a new pathway of protein body development.
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KEYWORD
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ER cisternae, Immunoelectron microscopy, Legumin, Protein bodies
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