Elektronenmikroskopische Untersuchungen �ber die Abgabe von Plastidenteilen ins Plasma

Schötz, Franz; Diers, Lothar

doi:10.1007/bf00387528

Cited by 21 publications

(6 citation statements)

References 28 publications

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“…Such electron-transparent areas are widespread, especially in undifferentiated plastids and in mitochondria of meristematic tissues (cf. Whaley et al 1960;Diers and Sch6tz, 1965). These regions may contain components which are easily leached out during fixation and dehydration, or they may be caused by a slight swelling of the organelles.…”

Section: Discussionmentioning

confidence: 99%

“…They regard this concentralization as a method of chloroplast division. Sch6tz and Senser (1964) mention quite a corresponding formation in the chloroplasts of certain Oenothera hybrids. Neither Gantt and Arnott (1963) nor Sch6tz and Senser (1964) found a precise indication, in their electron micrographs, how chloroplast division is completed after concentralization.…”

Section: Central Cellmentioning

confidence: 93%

“…But there was no indication in Sphaerocarpus that plastids or mitochondria may develop out of these separated nuclear parts (cf. Diers, 1964).…”

Section: E~g C~llmentioning

confidence: 99%

“…Investigations of Renner (1934) and of Schwemmle and coworkers (1938) strongly indicate plastid inheritance, which must mean plastid continuity, at least a genetical one. Based on their own work on plastid inheritance, SchStz (1962), Stubbe (1962), and Haustein (1962) have already emphasized this fact.…”

Section: Introductionmentioning

confidence: 99%

“…Because this term is used for several types of cell constituents (cf. Sch6tz and Diers, 1965), the neutral expression "body (x)" is preferred.…”

mentioning

confidence: 99%

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On the Plastids, Mitochondria, and Other Cell Constituents During Oögenesis of a Plant

Diers

1966

The Journal of Cell Biology

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In the liverwort Sphaerocarpus donnellii Aust., the behavior of the cell constituents, especially of mitochondria and plastids, was studied by electron microscopy during the development of the egg and its preceding ceils. A degeneration and elimination of mitochondria and plastids was not found in any of the developmental stages. In all growth phases of the archegonium, the plastids may deposit starch which becomes especially frequent in the maturing egg cell. No indications have been observed that new mitochondria or plastids generate from the nuclear evaginations, which often penetrate deeply into the cytoplasm of the maturing and fully developed eggs. A quantitative investigation based on general micrographs elucidates the numerical aspects of the cell constituents during o6genesis. With the increase of cell volume, the numbers of dictyosomes, mitochondria, plastids, and lipid bodies increase. From the stages of the mother cell of the axial row up to that of the mature egg, the cell volume enlarges about 8 times and the nucleus volume about 15 times. Simultaneously, the numbers of mitochondria and plastids increase up to 8 to 15 times. On the basis of these findings, mitochondria and plastids with three-dimensional narrow constrictions are interpreted as divisional stages.

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Section: Discussionmentioning

confidence: 99%

Section: Central Cellmentioning

confidence: 93%

“…But there was no indication in Sphaerocarpus that plastids or mitochondria may develop out of these separated nuclear parts (cf. Diers, 1964).…”

Section: E~g C~llmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Because this term is used for several types of cell constituents (cf. Sch6tz and Diers, 1965), the neutral expression "body (x)" is preferred.…”

mentioning

confidence: 99%

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On the Plastids, Mitochondria, and Other Cell Constituents During Oögenesis of a Plant

Diers

1966

The Journal of Cell Biology

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Spore Wall Formation and Chloroplast Development During Sporogenesis in the Moss Fissidens Limbatus

Mueller

1974

American J of Botany

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The sequence of wall formation in spores of Fissidens limbatus Sullivant is as follows: The exine is formed around the protoplasts after the sporocyte has undergone meiosis. The fully enlarged spores then become coated by the perine; this is followed by intine formation. The source of the intine and exine appears to be from within the spore, but the perine is of an apparent exogenous origin. Ornamentation of the spore is due solely to deposition of the perine. Each spore originally has a single plastid. Plastids increase in number by fission, resulting in mature spores with numerous plastids with well differentiated lamellae.

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Protein Degradation

Matile¹

1982

Nucleic Acids and Proteins in Plants I

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Elektronenmikroskopische Untersuchungen �ber die Abgabe von Plastidenteilen ins Plasma

Cited by 21 publications

References 28 publications

On the Plastids, Mitochondria, and Other Cell Constituents During Oögenesis of a Plant

On the Plastids, Mitochondria, and Other Cell Constituents During Oögenesis of a Plant

Spore Wall Formation and Chloroplast Development During Sporogenesis in the Moss Fissidens Limbatus

Protein Degradation

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