Protoplasma
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Rearrangement of cortical microtubules from transverse to oblique or longitudinal in living cells of transgenicArabidopsis thaliana
Protoplasma - Tập 213 Số 1-2 - Trang 28-38 - 2000
The ultrastructure of mitosis inChroomonas salina (Cryptophyceae)
Protoplasma - Tập 88 - Trang 241-254 - 1976
A detailed account of the ultrastructure of mitosis in a member of theCryptophyceae is given for the first time. The initial indication of mitosis is the duplication of the flagellar bases. The nucleus migrates towards the anterior of the cell and its envelope and nucleolus break down. The chromatin which at interphase is in the form of scattered clumps, condenses into a solid mass through which r......
Flower nectar trichome structure of carnivorous plants from the genus butterworts Pinguicula L. (Lentibulariaceae)
Protoplasma - Tập 257 - Trang 245-259 - 2019
Pinguicula (Lentibulariaceae) is a genus comprising around 96 species of herbaceous, carnivorous plants, which are extremely diverse in flower size, colour and spur length and structure as well as pollination strategy. In Pinguicula, nectar is formed in the flower spur; however, there is a gap in the knowledge about the nectary trichome structure in this genus. Our aim was to compare the nectary t......
Extra DNA synthesis in the dedifferentiating cells ofVicia faba roots
Protoplasma - Tập 124 - Trang 213-218 - 1985
Cell dedifferentiation was induced inVicia faba root tissues by removing the whole root meristem (decapitation) and the behaviour of the nuclear DNA in the dedifferentiating cells was studied by means of cytophotometric and autoradiographic analyses. Cytophotometric determination after Feulgen-staining showed that: 1. the vast majority of nuclei in differentiated cells were in the DNA postsyntheti......
Variation of plastid types in spinach
Protoplasma - Tập 74 - Trang 345-356 - 1972
During growth in the light the plastids of cultured leaf discs of spinach divide, increase in size, and differentiate in a similar manner to those in intact leaves. By contrast when l'eaf discs are grown in the dark prolamellar bodies begin to develop in partially differentiated chloroplasts within 2 hours. After 7 days growth in the dark the plastids contain many vesicles which appear to arise fr......
Cell-specific association of heat shock-induced proton flux with actin ring formation in Chenopodium cells: comparison of auto- and heterotroph cultures
Protoplasma - Tập 234 - Trang 33-50 - 2008
A comparison of the responses of extracellular pH, buffering capacity and actin cytoskeleton in autotroph and heterotroph Chenopodium rubrum cells to heat shock revealed cell-specific reactions: alkalinization caused by the heat shock at 25–35°C was higher in heterotroph cells and characterized by heat shock-induced changes in the actin cytoskeleton and ring formation at 35–37°C. Rings (diameter u......
Die Veränderungen der Plasmakolloide bei der Entwicklungserregung des Seeigeleies
Protoplasma - Tập 4 Số 1 - Trang 388-514 - 1928
Tổng số: 7,253
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