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Structural changes of lamellar cells in leaves of the moss Polytrichum formosum Hedw. during winter freezing and thawing processes

N. Ljubešić
M. Wrischer
T. Prebeg
Z. Devidé

Puni tekst: engleski, pdf (451 KB) str. 219-226 preuzimanja: 1.151* citiraj
APA 6th Edition
Ljubešić, N., Wrischer, M., Prebeg, T. i Devidé, Z. (2005). Structural changes of lamellar cells in leaves of the moss Polytrichum formosum Hedw. during winter freezing and thawing processes. Acta Botanica Croatica, 64 (2), 219-226. Preuzeto s https://hrcak.srce.hr/3357
MLA 8th Edition
Ljubešić, N., et al. "Structural changes of lamellar cells in leaves of the moss Polytrichum formosum Hedw. during winter freezing and thawing processes." Acta Botanica Croatica, vol. 64, br. 2, 2005, str. 219-226. https://hrcak.srce.hr/3357. Citirano 26.10.2021.
Chicago 17th Edition
Ljubešić, N., M. Wrischer, T. Prebeg i Z. Devidé. "Structural changes of lamellar cells in leaves of the moss Polytrichum formosum Hedw. during winter freezing and thawing processes." Acta Botanica Croatica 64, br. 2 (2005): 219-226. https://hrcak.srce.hr/3357
Harvard
Ljubešić, N., et al. (2005). 'Structural changes of lamellar cells in leaves of the moss Polytrichum formosum Hedw. during winter freezing and thawing processes', Acta Botanica Croatica, 64(2), str. 219-226. Preuzeto s: https://hrcak.srce.hr/3357 (Datum pristupa: 26.10.2021.)
Vancouver
Ljubešić N, Wrischer M, Prebeg T, Devidé Z. Structural changes of lamellar cells in leaves of the moss Polytrichum formosum Hedw. during winter freezing and thawing processes. Acta Botanica Croatica [Internet]. 2005 [pristupljeno 26.10.2021.];64(2):219-226. Dostupno na: https://hrcak.srce.hr/3357
IEEE
N. Ljubešić, M. Wrischer, T. Prebeg i Z. Devidé, "Structural changes of lamellar cells in leaves of the moss Polytrichum formosum Hedw. during winter freezing and thawing processes", Acta Botanica Croatica, vol.64, br. 2, str. 219-226, 2005. [Online]. Dostupno na: https://hrcak.srce.hr/3357. [Citirano: 26.10.2021.]

Sažetak
The lamellar cells of winter leaves of Polytrichum formosum were studied by electron microscopy of thin sections, and the results were compared with those for spring and summer plants. Pigment content and photosynthetic activity were also analysed. The lamellar cells of winter plants, when grown at temperatures above zero, had a similar ultrastructure to those of spring and summer plants. Their pigment content and photosynthetic activity were also similar. On the other hand, the lamellar cells of frozen plants (examined at temperatures
about –5 °C) were desiccated, i.e. deformed, the cytosol was shrunken, and the ribosomes and mitochondria were aggregated. The thylakoid system of their chloroplasts was irregularly arranged and the grana thylakoids were compressed. The desiccation of the cells was soon annulled when the ambient temperature rose above zero.

Ključne riječi
Polytrichum formosum; leaves; ultrastructure; pigment; photosynthesis; lamellar cell; freezing; thawing

Hrčak ID: 3357

URI
https://hrcak.srce.hr/3357

Posjeta: 1.507 *