+ Translate

Spectral and functional properties of chloroplasts in pine seedlings grown in the light and in darkness

, : Spectral and functional properties of chloroplasts in pine seedlings grown in the light and in darkness. Fiziologiya Rastenii (Moscow) 34(3): 445-452

The content of chlorophyll, the number of reaction centers and the functional activity of oxygen evolution were estimated in pine seedlings grown in darkness and after plant exposure to light. In the seedlings grown in darkness, as compared to light-grown plants, the amount of chlorophyll a and b, expecially that of their longwave forms, and the number of action centers were reduced four times. The value of variable fluorescence in darkgrown plants was not activated by light which indicated that the complete formation of reaction centers, with manganese atoms included, occurred in darkness. The chloroplasts isolated from dark-grown seedlings were able to evolve O2 just at the first flashes, but their capacity for characteristic oscillations with the periodicity of the number of flashes being a multiple of four appeared only after 60 flashes. The rate of O2 evolution by dark-grown seedlings after light activation was 25% of that in the seedlings grown under continuous light and 5.5% of that in plants grown under pulsed light. The results confirm the fundamental principle of the photoactivation of latent water-oxidizing complex in green plants.

(PDF 0-2 workdays service)

Accession: 006459496

Submit PDF Full Text: Here

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Related references

Zotikova, A.P.; Anan' ev, G.M.; Allakhverdiev, S.I.; Ganago, I.B.; Simonova, E.I., 1987: Spectral and functional properties of chloroplasts in light- and dark-grown seedlings. Chlorophyll content, number of reaction centres and O2 evolution were studied in Scots pine seedlings. Compared with seedlings grown in the light, chlorophyll content was considerably reduced in dark-grown seedlings, with chlorophyll b reduced mor...

Anonymous, 1960: Studies on the development of chloroplasts in the pea plant I Development of chloroplasts in seedlings grown under normal alternation of light and darkness

Simonova E.I.; Kudinova L.I.; Zotikova A.P.; Novikova N.S.; Pshenichkina Y.A., 1984: Development of functional activity of chloroplasts in conifer seedlings in the light and darkness. The formation of pigments and the photochemical activity of chloroplasts was studied in 14-day-old Siberian cedar [Pinus sibirica] and common pine [P. sylvestris] seedlings. The wholrs of cotyledonary leaves were analyzed of the seedlings grown in...

Laudi, G., 1964: Comparative studies on the morphology and physiology of Larix and Picea. Infrastructure of chloroplasts of cotyledons of seedlings grown in darkness and in light. Chloroplasts of P. abies are initially more advanced than those of L. decidua and develop more rapidly when exposed to light.

Wieckowski, S.; Goodwin, T.W., 1966: Assimilatory pigments in cotyledons of four species of pine seedlings grown in darkness and in light. A comparison was made of the concentrations of chlorophyll a, chlorophyll b, total xanthophylls, [alpha] -carotene and [beta] -carotene in cotyledons of 4 species of pine seedlings (Pinus silvestris, P. contorta, P. radiata and P. Jeffrey) grown i...

Wieckowski, S.; Goodwin, T.W., 1967: Studies on the metabolism of the assimilatory pigments in cotyledons of four species of pine seedlings grown in darkness and in light. Proceedings of a NATO Advanced Study Institute on biochemistry of chloroplasts, August, 1965, Aberystwyth, Wales, UK , Vol 2 444-451

Simonova, E.I.; Zotikova, A.P.; Kudinova, L.I.; Novvikova, N.S., 1986: Development of functional activity in chloroplasts of conifer seedlings under light of different spectral composition. Seedlings of Siberian larch (Larix sibirica), Siberian spruce (Picea obovata), Siberian stone pine (Pinus sibirica) and Scots pine were reared until 14 days old in red, green or white light or in darkness. Chlorophyll contents in cotyledon leaves...

Simonova E.I.; Zotikova A.P.; Kudinova L.I.; Novikova N.S., 1986: Development of functional activity of the chloroplasts in coniferous seedlings under light of varying spectral composition. Pigment formation and the development of photosynthetic activity were examined in 14-day-old spruce, cedar, pine and larch seedlings grown in complete darkness or in the light of various spectral composition. The electron transport reactions were...

Angelova, I., 1982: The content of endogenous auxins and ABA in pea seedlings grown in light or darkness. Seedlings of the pea cv. Ran 1 were kept in light or darkness for up to 10 days. Data are tabulated on changes in the level of auxins and ABA in the cotyledons, roots and stems. The regulating effect of light on plant growth was connected not only...

Fiussello, N.; Castellaro, R., 1977: Flavonoids in Phaseolus vulgaris seedlings grown in darkness and in light. Flavonol conc. were 6-fold higher in seedlings of P. vulgaris grown in the open ground than in those grown in a glasshouse while the conc. in those grown in darkness was very low. The main flavonoids were derivatives of quercetin and kaempferol.