Abstract
The lectin, concanavalin A (Con A), was localized in the cotyledon of developing jack beans (Canavalia ensiformis (L.) DC) by electron-microscope immunocytochemistry. In mature seeds, Con A was present in protein-storage vacuoles (protein bodies) of storage-parenchyma cells. Although protein bodies could be seen in other cell types, only protein bodies in storage-parenchyma cells contained Con A. During seed development, Con A was also localized on the endoplasmic reticulum and Golgi apparatus, presumably en route toward deposition within the protein bodies. The intensity of labeling of the endoplasmic reticulum was much greater during the developmental stage of protein-body filling (66% final seed weight) than in mature seeds.
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Abbreviations
- Con A:
-
concanavalin A
- ER:
-
endoplasmic reticulum
- IgG:
-
immunoglobulin G
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Herman, E.M., Shannon, L.M. Immunocytochemical localization of concanavalin A in developing jack-bean cotyledons. Planta 161, 97–104 (1984). https://doi.org/10.1007/BF00395468
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DOI: https://doi.org/10.1007/BF00395468