Licht-und elektronenmikroskopische Untersuchungen der Chloroplasten chlorotischer Maispflanzen

Strunk, Christa; Wartenberg, H.

doi:10.1111/j.1439-0434.1960.tb03928.x

Cited by 11 publications

(3 citation statements)

References 21 publications

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“…The electron micrographs show clearly that these lesions result from a rapid increase in size of the starch grains already present, rather than from formation of additional ones. The non-structured, opalescent vacuoles surrounding the swollen starch grains have not been identified with published descriptions of chloroplasts, except possibly with the vacuole development that accompanies degradation of chloroplasts in yellowing tobacco (16).…”

Section: Discussionmentioning

confidence: 83%

AN ELECTRON MICROSCOPE STUDY OF TOBACCO MOSAIC VIRUS LESIONS IN NICOTIANA GLUTINOSA L

Weintraub

Ragetli

1964

The Journal of Cell Biology

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Ultra-thin sections of Nicotiana glutinosa L. leaves inoculated with a concentrated solution of tobacco mosaic virus were made at short intervals from 0 to 78 hours after inoculation. Eight hours after inoculation, the size of starch grains increased. This was followed by rupture of cytoplasmic and chloroplast membranes. At about 24 hours there was a great increase in number of mitochondria, which persisted until about 60 hours, when some became electron opaque while others appeared to disintegrate. Finally, the cell contents were compressed into one area of the cell, where they became electron opaque. This was accompanied by collapse of the rest of the cell and tearing away of the cell walls from adjacent cells. The nucleus remained stable and intact for as long as observations could be made. No identifiable virus particles were seen.

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Section: Discussionmentioning

confidence: 83%

AN ELECTRON MICROSCOPE STUDY OF TOBACCO MOSAIC VIRUS LESIONS IN NICOTIANA GLUTINOSA L

Weintraub

Ragetli

1964

The Journal of Cell Biology

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“…3), so that it is likely that the close association with starch grains resulted merely from the destruction of the rest of the chloroplast and the subsequent pressing together of the TMV particles and the starch grains. It would be interesting to know the origin of the electron-transparent vacuoles around the starch grains which resemble vacuoles formed during chloroplast degeneration in yellowing tobacco (18), since TMV particles tend to accumulate loosely in these spaces.…”

Section: Discussionmentioning

confidence: 99%

Some Conditions Affecting the Intracellular Arrangement and Concentration of Tobacco Mosaic Virus Particles in Local Lesions

Weintraub

Ragetli

John

1967

The Journal of Cell Biology

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Tobacco mosaic virus particles were found in small packets and in small numbers, with the electron microscope, in necrotic leaf cells of Nicotiana glutinosa when the samples were fixed in glutaraldehyde and postfixed in OS0 4 , and the sections were stained with heavy metals. The numbers and size of the virus packets were increased greatly when the leaves were detached from the plant after inoculation Assay of concentration showed that detachment resulted in a 30-fold increase of virus. A similar increase in the number of virus particles detected by electron microscopy was produced by keeping inoculated plants at an air temperature of 26C. A still greater increase in concentration was effected by incubating detached inoculated leaves at 26'C. Moreover the arrangement of virus particles in these cells resembled that of a systemic virus infection. Cells in local lesions of Chenopodium amaranticolor contained large numbers of virus particles both as packets and in the loose arrangement characteristic of systemic infection. Neither the number of particles nor their arrangement was affected in this host by detaching the leaf or by changing the air temperature.

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“…The picture given by natural chlorotic Cynodon is more like that found in yellowing tobacco, of which Fig. 16 shows the initial stages, without the ensuing vacuolization which accompanies degradation (Strunk and Wartenberg, 1960). In both cases, the inhibition is irreversible, but in Cynodon the plastids do not become disintegrated as in functional chlorosis, or chlorosis caused by fungi (Christiansen, 1960).…”

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confidence: 95%

Lethal Synthesis in Cynodon dactylon Growing in Southern Africa

Badenhuizen

Lawson

1962

American Journal of Botany

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Licht-und elektronenmikroskopische Untersuchungen der Chloroplasten chlorotischer Maispflanzen

Abstract: In halt: I. Einleitung. — II. Material und Methode. — III. Untersuchungen an Chloroplasten bei Mangelchlorose. — IV. Untersuchungen an Chloroplasten bet funktioncller Chlorose. — V. Diskussion. — Zusammenfassung. — Summary. – Literaturverzeichnis.

Cited by 11 publications

References 21 publications

AN ELECTRON MICROSCOPE STUDY OF TOBACCO MOSAIC VIRUS LESIONS IN NICOTIANA GLUTINOSA L

AN ELECTRON MICROSCOPE STUDY OF TOBACCO MOSAIC VIRUS LESIONS IN NICOTIANA GLUTINOSA L

Some Conditions Affecting the Intracellular Arrangement and Concentration of Tobacco Mosaic Virus Particles in Local Lesions

Lethal Synthesis in Cynodon dactylon Growing in Southern Africa

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