Effect of light on growth of black valentine bean plastids

Mego, John L.; Jagendorf, André T.

doi:10.1016/0006-3002(61)90437-1

Cited by 112 publications

(49 citation statements)

References 27 publications

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“…TPN-dehydrogenase activity, controlled by the red-far-red system, develops in etiolated leaves after a low energy red irradiation without increase in chlorophyll content (13). An inductive illumination results also in an increase in the size of as well as in the protein and lipid content of the plastids (14). Carotenoid synthesis is also stimulated by this treatment (3).…”

Section: Discussionmentioning

confidence: 99%

“…The length of the lag phase in chlorophyll synthesis appears to be under the control of the red-far-red reversible phytochrome system (15,21), but the relationship between the phytochrome system and changes in plastid fine structure has not yet been defined. In view of the discrepancies between the observations of yon Wettstein's group (5,22,24) and those of Mego and J a g e n d o r f (14), and the uncertainties about the relationship between the phytochrome system and developmental changes in plastid fine structure, we investigated the effect of monochromatic light of various wavelengths between 653 m/z and 730 m/z on plasfid development, using the large biological spectrograph at the Argonne laboratories (16). In a number of experiments changes in plastid fine structure were investigated during the protochlorophyll-chlorophyll conversion, while in others structural changes were studied during the lag phase in chlorophyll accumulation.…”

Section: Introductionmentioning

confidence: 88%

“…the transformation of tubes to vesicles, occurs at about the same time, and in response to the same light quality as the conversion of protochlorophyllide to chlorophyllide, it was suggested that the two processes might be functionally re-lated. However, Mego and Jagendorf (14) could not detect changes in plastid fine structure after illumination with more light energy than was required to convert all the protochlorophyllide present to chlorophyllide. The vesicles are reported to become dispersed through the plastid during a lag period in chlorophyll formation.…”

Section: Introductionmentioning

confidence: 90%

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Early Stages in the Development of Plastid Fine Structure in Red and Far-Red Light

Klein

Bryan

Bogorad

1964

The Journal of Cell Biology

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A B S T R A C TDevelopmental changes in finc structure were studicd in plastids of etiolated bean leaves during the time required for thc protochlorophyllidc-chlorophyllide transformation and the following lag phase prior to chlorophyll accumulation. In agreement with some othcr workers, two distinct stages of change in the fine structure of proplastids werc found to occur upon illumination during this period. The first involves a dissociation of the previously fused units in the prolamellar bodies of the proplastids and occurs simultaneously with the protochlorophyllidc-chloroph)dlidc conversion in light of 655 m#, but not of 682, 700, or 730 m/z. Thc effect of the rod light could not be rcversed by a simultaneously supplicd stronger far-red irradiation. The energy requirements for these structural changes parallel those for the pigment conversion. During the following step the vesicles which arose from the fused units of the prolamcllar body were dispersed in rows through the stroma, and the prolamellar bodies themselves disappeared. For these changes to occur, higher light energies were rcquircd and the leaves had to be illuminated for longer periods. A red preillumination seemed to acceleratc the development somewhat. The structural changes could be induccd by light of 655 m/z, but also, to a lesser degree, of 730 m#. No measurablc additional chlorophyll accumulatcd during this pcriod. Thus, the structural changes obscrved were independent of major changes in pigment content.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 90%

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Early Stages in the Development of Plastid Fine Structure in Red and Far-Red Light

Klein

Bryan

Bogorad

1964

The Journal of Cell Biology

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“…Phytochrome was also shown to regulate other parameters of chloroplast development in addition to its apparent effect on chlorophyll synthesis. Mego and Jagendorf (28) observed phytochrome control of chloroplast size and protein nitrogen content. Klein et al (21) and Holowinsky and O'Brien (unpublished), however, found no clear far red reversal of the red light induction of some structural changes during chloroplast development.…”

mentioning

confidence: 98%

Events Surrounding the Early Development of Euglena Chloroplasts

Holowinsky¹,

Schiff

1970

Plant Physiol.

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“…Chlorophvll content is also regulated by phytochrome (12,13). It is quite likely that a low PFR level during the night impedes chloroplast de-velopment in Sinningia, since this condition has been shown to inhibit structural development of the bean plastid (16,20). However, we feel that phytochrome control of chlorophyll level in our material is primarily indirect, i.e.…”

Section: Methodsmentioning

confidence: 81%

Photomorphogenesis in Sinningia speciosa, cv. Queen Victoria I. Characterization of Phytochrome Control

Satter

Wetherell

1968

Plant Physiol.

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Abstract. The morphological development of Sinningia speciosa plants that were exposed to supplementary far red light was very different from that of plants receiving dark nights. After several nights of such irradiation, stems and petioles were elongated, petioles were angulated, leaf blade expansion was inhibited, plants were chlorotic and the accumulation of shoot dry weight was retarded.Red reversibility of the morphological changes potentiated by far red light indicated control by the phytochrome system. A high PFR level during the last half of the night inhibited stem elongation and promoted leaf blade expansion, but both of these processes were hardly affected by the PFR level during the first half of the night. Thus sensitivity to PFR was cycli.c.The interpretation of our experiments was complicated by quantitative morphological differences resulting from long, as compared to short, far red irradiations.When Sininingia speciosa plants were irradiated by fluorescent light of photosynthetic intensitv for 8 hours daily and by a far red source for several hours each night, stems and petioles elongated, leaf blades failed to expand normally, petioles became angulated, and chlorosis developed. This contrasted sharply with the short, thick stems and large, horizontal leaf blades of controls receiving dark nights. Some of these phenomena have been noted in other species and been attributed to the effect of the light source upon the phytochrome3 svstem (6,8,12,13,22

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Effect of light on growth of black valentine bean plastids

Cited by 112 publications

References 27 publications

Early Stages in the Development of Plastid Fine Structure in Red and Far-Red Light

Early Stages in the Development of Plastid Fine Structure in Red and Far-Red Light

Events Surrounding the Early Development of Euglena Chloroplasts

Photomorphogenesis in Sinningia speciosa, cv. Queen Victoria I. Characterization of Phytochrome Control

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