Characterization of the epidermis from barley primary leaves. 1. Isolation of epidermal protoplasts

Dietz K-J, SCHRAMM M, BETZ M, BUSCH H, DURR C, MARTINOIA E (1992)
Planta 187(4): 425-430.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
A method is described for isolating epidermal protoplasts from the primary leaves of barley (Hordeum vulgare L.). Epidermal protoplasts are lighter than mesophyll protoplasts because of their smaller ratio of cytoplasm to vacuole, and can be separated from the latter by density-gradient centrifugation after complete digestion of the leaves. We have started a basic characterization of the epidermal protoplast fraction in comparison with mesophyll protoplasts. Epidermal protoplasts had a mean diameter of 63.5-mu-m, whereas that of mesophyll protoplasts was 35.7-mu-m. Their respiratory oxygen consumption was not influenced by light. They contained acid hydrolases and cytoplasmic enzymes in relative activities different from those of mesophyll protoplasts. Their polypeptide pattern as judged from two-dimensional separations was, in principle, similar to that of mesophyll cells after elimination of the plastids from the latter by the preparation of vacuoplasts. However, in addition, a considerable number of epidermis-specific polypeptides were observed. Isolated epidermal protoplasts were viable and efficiently incorporated [S-35]methionine into newly synthesized proteins. The results show that epidermal protoplasts are suitable for the investigation of the physiological and molecular properties of epidermal cells in leaves.
Erscheinungsjahr
Zeitschriftentitel
Planta
Band
187
Zeitschriftennummer
4
Seite
425-430
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eISSN
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Dietz K-J, SCHRAMM M, BETZ M, BUSCH H, DURR C, MARTINOIA E. Characterization of the epidermis from barley primary leaves. 1. Isolation of epidermal protoplasts. Planta. 1992;187(4):425-430.
Dietz, K. - J., SCHRAMM, M., BETZ, M., BUSCH, H., DURR, C., & MARTINOIA, E. (1992). Characterization of the epidermis from barley primary leaves. 1. Isolation of epidermal protoplasts. Planta, 187(4), 425-430. doi:10.1007/BF00199959
Dietz, K. - J., SCHRAMM, M., BETZ, M., BUSCH, H., DURR, C., and MARTINOIA, E. (1992). Characterization of the epidermis from barley primary leaves. 1. Isolation of epidermal protoplasts. Planta 187, 425-430.
Dietz, K.-J., et al., 1992. Characterization of the epidermis from barley primary leaves. 1. Isolation of epidermal protoplasts. Planta, 187(4), p 425-430.
K.-J. Dietz, et al., “Characterization of the epidermis from barley primary leaves. 1. Isolation of epidermal protoplasts”, Planta, vol. 187, 1992, pp. 425-430.
Dietz, K.-J., SCHRAMM, M., BETZ, M., BUSCH, H., DURR, C., MARTINOIA, E.: Characterization of the epidermis from barley primary leaves. 1. Isolation of epidermal protoplasts. Planta. 187, 425-430 (1992).
Dietz, Karl-Josef, SCHRAMM, M, BETZ, M, BUSCH, H, DURR, C, and MARTINOIA, E. “Characterization of the epidermis from barley primary leaves. 1. Isolation of epidermal protoplasts”. Planta 187.4 (1992): 425-430.

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PMID: 24178136

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