The Fine Structure and Development of Plastids in Cultured Cells of Daucus carota

Israel, Herbert W.; Steward, F. C.

doi:10.1093/oxfordjournals.aob.a084118

Cited by 85 publications

(39 citation statements)

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“…A few plastids contain a dense inclusion (Fig. 12), which has been suggested to participate in the formation of lamellae (Israel and Steward 1967, Srivastava and Paulson 1968, Stetler and Laetsch 1969, Nagarajan et al 1974) and has been termed 'Prethylakoid Body'. The cytoplasmic islands noted in the endosperm cells of earlier stages also occur here, but the ribosomal concentration within them is much lower (Fig.…”

Section: Distal Cellsmentioning

confidence: 99%

Fine Structure of Early Endosperm in <i>Quercus gambelii</i>

Singh

Mogensen

1976

CYTOLOGIA

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Section: Distal Cellsmentioning

confidence: 99%

Fine Structure of Early Endosperm in <i>Quercus gambelii</i>

Singh

Mogensen

1976

CYTOLOGIA

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“…However, there is a lack of consensus as to the exact developmental sequence. Membrane-bounded inclusions have been seen in proplastids of many normally grown plants (Srivastava, 1966;Badenhuizen and Salema, 1967;Israel and Steward, 1967;Ames and Pivorum, 1974;Cran and Possingham, 1974;Esau, 1975;Platt-Aloia and Thomson, 1977;Mares, Coote and Possingham, 1979). Usually these bodies are granular in nature and stain densely with osmium tetroxide.…”

Section: Introductionmentioning

confidence: 99%

“…Srivastava (1966) speculated that these inclusion bodies may have a role in the formation of thylakoid membranes. Israel and Steward (1967) called them prethylakoid bodies and suggested that they are the sites of accumulation of thylakoid membrane precursors. Close association, and in many cases, continuity between the darkly stained inclusion bodies and the thylakoid membranes have been shown (Platt-Aloia and Thomson, 1977;Casadoro and Rascio, 1978;Mares et al, 1979).…”

Section: Introductionmentioning

confidence: 99%

Influence of Leaf Differentiation on the Developmental Pathway of Coleus Chloroplasts

Varkey

Nadakavukaren

1982

New Phytologist

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SUMMARYUltrastructural observations of young Coleus leaves revealed two pathways of chloroplast development within the same leaf. Developing plastids in the mesophyll cells from the basal regions of a leaf contained dense-staining inclusion bodies associated v^^ith newly forming thylakoids while these inclusion bodies were absent from the plastids in the cells of the leaf tip. Studies of the chemical nature of these inclusion bodies suggest that they are made up of proteins and possibly lipids, with no carbohydrates. The material present in the newly-forming thylakoids is similar in electron density to the inclusion bodies. The difference in chloroplast ontogeny appears to be related to the difference in cell development between the leaf tip and base.

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“…Similar explants have also been used to examine chloroplast division (11) and developmental changes in plastids under long-term tissue culture conditions (14,27). Mechanically isolated cells have been used in various studies of cellular physiology.…”

mentioning

confidence: 99%

Chloroplast Dedifferentiation in Mechanically Isolated Asparagus Cells during Culture Initiation

Harikrishna

Darby²,

Draper³

1992

Plant Physiol.

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Mechanically isolated asparagus (Asparagus officinalis) mesophyll cells dedifferentiate and divide when cultured in the dark in a medium containing sucrose. A strong correlation was observed between the onset of cell division and a loss of photosynthetic capacity. For the first 8 to 9 d of culture, there was no change in chloroplast size or morphology. However, following this period, the chloroplasts divided to form smaller proplastid-like structures. The gross chlorophyll content of the cell population did not change, suggesting that the loss of photosynthetic potential was not by senescence. Northern analysis showed that mRNA of the small subunit of ribulose 1,5-bisphosphate carboxylase/oxygenase was undetectable within 1 d postisolation, which was quicker than in dark-treated plants. The mRNA of the large subunit of ribulose 1,5-bisphosphate carboxylase/oxygenase decreased to low levels within 2 d of cell isolation. Both the large and small subunits of ribulose 1,5-bisphosphate carboxylase/oxygenase protein showed a gradual reduction in abundance, falling to basal levels by days 6 to 7, which coincided with the onset of rapid cell division. A similar trend was observed with chloroplast rRNA molecules, which decreased to basal levels by day 6 in culture.Wounding has been demonstrated to cause profound changes in metabolism, gene expression, and cellular morphology (3,6,15,18

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The Fine Structure and Development of Plastids in Cultured Cells of Daucus carota

Cited by 85 publications

References 0 publications

Fine Structure of Early Endosperm in <i>Quercus gambelii</i>

Fine Structure of Early Endosperm in <i>Quercus gambelii</i>

Influence of Leaf Differentiation on the Developmental Pathway of Coleus Chloroplasts

Chloroplast Dedifferentiation in Mechanically Isolated Asparagus Cells during Culture Initiation

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