The occurrence of DNA fibrils in chloroplasts of Laurencia spectabilis

Bisalputra, T.; Bisalputra, A. A.

doi:10.1016/s0022-5320(67)80016-9

Cited by 64 publications

(14 citation statements)

References 16 publications

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“…The smallest fibrils are of the order of 15-25 A thick, and these were seen radiating from larger fibrils of up to 120 A. The large fibrils may result from the intertwining and clumping of the smaller ones, but the large rod-shaped structure observed previously in the chloroplast of the red alga Laurencia (2) is not present, indicating that the fibrils in Egregia are not so heavily clumped. No other structure is discernible in the area around the fibrils.…”

Section: Chloroplast D N Amentioning

confidence: 70%

“…Fibrils can be removed by DNase ( Fig. 9) in the same manner as that shown previously in chloroplasts of other plants (2,10,17). However, the fibrils are not removed by the control extraction treatment after either 6 or 12 hr (Figs.…”

Section: Chloroplast D N Amentioning

confidence: 78%

“…Evidence from electron microscopic observations (2,4,10,17) seems to indicate that fibrils with DNA characteristics can be detected within electron-transparent areas in the chloroplasts of several plant groups. Ris and Plaut (17) have shown by Feulgen reaction, fluorescence, and electron microscopy that DNA-containing areas are found scattered in the vicinity of the pyrenoid in Chlamydomonas.…”

Section: Discussionmentioning

confidence: 99%

“…In a previous paper (2), evidence was presented for the occurrence of DNA fibrils in chloroplasts of the red alga Laurencia spectabilis. The fibrils were found within electron-transparent areas which occur in random distribution within the chloroplast matrix.…”

Section: Introductionmentioning

confidence: 99%

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CHLOROPLAST AND MITOCHONDRIAL DNA IN A BROWN ALGA EGREGIA MENZIESII

Bisalputra

1967

The Journal of Cell Biology

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Chloroplasts and mitochondria of the brown alga Egregia menziesii were studied with the electron microscope. In both organelles, 15-25-A fibrils with DNA characteristics are found within areas of electron transparency. In each chloroplast there are two DNA-containing areas, one at each tip of the chloroplast. This localization, the shape and size of each DNAcontaining area, and its close association with lamellae in a nondividing chloroplast are noted. One or occasionally two DNA-containing areas are found within the mitochondrion and they are compared with a similar structure in the chloroplast.

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Section: Chloroplast D N Amentioning

confidence: 70%

Section: Chloroplast D N Amentioning

confidence: 78%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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CHLOROPLAST AND MITOCHONDRIAL DNA IN A BROWN ALGA EGREGIA MENZIESII

Bisalputra

1967

The Journal of Cell Biology

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“…Flemion et al (1967) suggested that they may be involved in phenolic synthesis and storage. The inclusion observed in potato tuber buds was thought to be a site of nucleic acid and protein accumulation (Marinos, 1967), while that noted in plastids of root tip cells of Phaseolus vulgaris was thought to serve as a protein storage body (Newcomb, 1967 Palevitz and Newcomb, 1970. ,.…”

mentioning

confidence: 99%

A Cytochemical Investigation of a Chloroplast Inclusion

Ames

Pivorun

1974

American Journal of Botany

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The chemical composition of a membrane-bound plastid inclusion observed in genetic tumor cells of the amphiploid Nicotiana suaveolens X N. langsdorjjii was studied by means of electron microscope cytochemistry. Treatment with the following enzymes had no effect on the ultrastructure of the inclusion: a-amylase, DNase, lipase, papain, pronase, protease, RNase, and trypsin. The only enzyme to alter the fine structure of the inclusion was pepsin, which decreased the electron density of the granular component of the structure. These results indicate that protein is the major chemical constituent of this membrane-bound plastid inclusion. This finding is discussed in relation to the possible role of the inclusion in plastid ontogeny.

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Chloroplast Development in Nicotiana Tabacum ‘Maryland Mammoth’

Stetler

Laetsch

1969

American J of Botany

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The development of chloroplasts in light‐grown and in previously etiolated tissues of tobacco has been studied. A single membrane‐bound body is found in the developing plastids of both light‐ and dark‐grown tissue. The contents of the body appear homogeneous, becoming progressively granular as the chloroplast develops. In the mature chloroplast the body contains a fibrillar network resembling strands shown to be DNA by other workers. The prolamellar body persists even in moderately well developed chloroplasts in light‐grown plants. Frequently the prolamellar body is connected to the membrane‐bound body as well as to the grana. Relatively mature chloroplasts are seen to divide in this tissue. The membrane‐bound body may have a role in the formation of lamellae, but the nature of its contents is yet to be determined.

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The occurrence of DNA fibrils in chloroplasts of Laurencia spectabilis

Cited by 64 publications

References 16 publications

CHLOROPLAST AND MITOCHONDRIAL DNA IN A BROWN ALGA EGREGIA MENZIESII

CHLOROPLAST AND MITOCHONDRIAL DNA IN A BROWN ALGA EGREGIA MENZIESII

A Cytochemical Investigation of a Chloroplast Inclusion

Chloroplast Development in Nicotiana Tabacum ‘Maryland Mammoth’

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