The effect of kinetin in relation to photocontrol of anthocyani biosynthesis in Brassica oleracea

Pecket, R. C.; Bassim, Tahani A. Hathout

doi:10.1016/0031-9422(74)80298-0

Cited by 31 publications

(12 citation statements)

References 8 publications

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“…Cytokinins increased the accumulation of anthocyanin in the plant grown in continuous darkness or in weak light, but suppressed its formation to some extent at high light. A kinetin-induced increase of anthocyanin concentration in dark-grown Brassica (Pecket and Bassim, 1974) and light-grown Raphanus seedlings (Straub and Lichtenthaler, 1973) has already been reported. Obviously, the enhanced content of endogenous cytokinins (Dorfler and Goring, 1978;Kohler et ul., 1980) may account for the suppression of the anthocyanin accumulation in strong lightgrown plants, as already discussed above with respect to the cytokinin effect on roots and hypocotyls.…”

Section: Responses Of Pigmentsmentioning

confidence: 84%

THE EFFECT OF CYTOKININS ON GROWTH and PIGMENT ACCUMULATION OF RADISH SEEDLINGS (RAPHANUS SATIVUS L.) GROWN IN THE DARK and AT DIFFERENT LIGHT QUANTA FLUENCE RATES*

Buschmann

Lichtenthaler

1982

Photochem & Photobiology

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Abstract— The dependency of cytokinin effects upon irradiance was studied with radish seedlings (Raphanus sativus L. cv. Saxa Treib). Kinetin (6‐furfurylamino‐purine) or BAP (6‐benzylamino‐purine) were applied via the roots of plants growing either in continuous darkness or under high (90 Wm‐2) or low intensity white light (10Wm‐2). Apart from the different development of plants at low and high fluence rates, the following cytokinin effects were found: (1) Both cytokinins acted in a similar manner on growth characteristics and pigment accumulation at high and low light conditions, BAP being in many cases more effective than kinetin. (2) When compared with the control, the cytokinins suppressed hypocotyl and root lengthening in the dark and light‐grown plants. In darkness they led to increased cotyledon areas, whereas in the light the leaf expansion was suppressed. (3) In the etiolated and low light grown plants, the anthocyanin content of the hypocotyls was enhanced due to the action of cytokinins, whereas under high light the anthocyanin accumulation was decreased. (4) In the cotyledons of etiolated plants, more phototransformable protochlorophyll(ide) and more carotenoids were formed when cytokinins were present. In green leaves the carotenoid content was diminished due to the action of cytokinins, particularly in plants grown in strong light. The chlorophyll a/b ratio was increased in the cytokinin‐treated plants in most cases. The results suggest a light dependency of the cytokinin effects. It is believed that the response of a plant towards exogenously applied cytokinins is similar to that with high intensity light.

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Section: Responses Of Pigmentsmentioning

confidence: 84%

THE EFFECT OF CYTOKININS ON GROWTH and PIGMENT ACCUMULATION OF RADISH SEEDLINGS (RAPHANUS SATIVUS L.) GROWN IN THE DARK and AT DIFFERENT LIGHT QUANTA FLUENCE RATES*

Buschmann

Lichtenthaler

1982

Photochem & Photobiology

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“…1971) and also promoted its synthesis in cultures of Haplopapptts gracilis (Constabel et al 1971), Rosa multiflora and Malus pumila (Ibrahim et al 1971). Furthermore, in the case of intact plants, cytokinins promoted anthocyanin synthesis in the petals of Impatiens balsamina (Klein and Hagen 1961) and Rosa hybrida (Nakamura et al 1980) and in the seedling of Brassica oleracea (Pecket et al 1974), although these promotions were closely associated with illumination. On the other hand, Kinnersley and Dougall (1980) showed that kinetin decreased the yield of anthocyanin in a suspension culture of Dauctis carota.…”

Section: Discussionmentioning

confidence: 96%

Induction of anthocyanin synthesis in relation to embryogenesis in a carrot suspension culture: Correlation of metabolic differentiation with morphological differentiation

Ozeki

Komamine

1981

Physiologia Plantarum

101

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A system in which anthocyanin synthesis could be induced under a defined condition, was established in a carrot suspension culture. A cell suspension culture of carrot (Daucus carota L. cv. Kurodagosun) was subcultured for more than a year in a medium containing 5 × 10−7M 2,4‐dichlorophenoxyacetic acid (2,4‐D). At every subculture the cultures were sieved through nylon screens and the cells and cell clusters collected in the size range of 31–81 μm were transferred to a fresh medium. When the cells were transferred to a medium without auxin, synthesis of anthocyanin was induced. Zeatin promoted anthocyanin synthesis in a medium lacking auxin, with maximum yields of anthocyanin obtained at 10−7 to 10−8M zeatin, 2,4‐D at higher concentrations than 10−7M inhibited anthocyanin synthesis completely. The sieved cells were fractionated by Ficoll density gradient centrifugation. Somatic embryos were formed in the fraction of higher density (>14% of Ficoll) in a medium containing 10−7M zeatin but lacking auxin, while synthesis of anthocyanin was hardly observed. On the other hand, cells in the fraction of lower density (<12% of Ficoll) synthesized anthocyanin in the same medium, but formed few embryos. Forty to fifty percent of the total cells in this lighter cell fraction synthesized anthocyanin at a maximum. The similarity between anthocyanin synthesis and embryogenesis was observed in the time course as well as in the effects of growth regulators. The correlation between metabolic and morphological differentiation is discussed.

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“…The growth regulator gibberellic acid inhibits the accumulation of anthocyanins in carrot tissue cultures (39). In contrast, the growth hormone kinetin stimu lates anthocyanin formation in dark-grown red cabbage seedlings (36).…”

Section: Time (H)mentioning

confidence: 94%

Effects of Glyphosate on Metabolism of Phenolic Compounds: VI. Effects of Glyphosine and Glyphosate Metabolites on Phenylalanine Ammonia-Lyase Activity, Growth, and Protein, Chlorophyll, and Anthocyanin Levels in Soybean (Glycine max) Seedlings

Hoagland¹

1980

Weed sci.

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The growth regulator, glyphosine [N,N-bis(phosphonomethyl)glycine], and other possible metabolites of glyphosine and glyphosate [N-(phosphonomethyl)glycine] [glycine, sarcosine, and aminomethylphosphonic acid (AMPA)] were tested individually (0.5 mM) or as a mixture (each at 0.5 mM) for their effects on growth, extractable phenylalanine ammonia-lyase (PAL) activity, hydroxyphenolic-compound production, chlorophyll and anthocyanin contents, and on soluble-protein levels in soybean [Glycine max(L.) Merr. ‘Hill’] seedlings. Most chemical treatments caused some inhibition of growth either on fresh weight accumulation or on root elongation in the light and dark over 72 h. Glyphosine was generally the most inhibitory and caused the greatest inhibition on axis dry-weight accumulation. Glyphosine significantly increased extractable PAL activity in axes of light- and dark-grown soybeans to a lesser extent than did glyphosate. AMPA had some inhibitory effects on extractable PAL activity whereas other compounds had little influence on the enzyme. These compounds had little effect on total soluble protein in axes or on soluble protein in PAL preparations from 12 to 72 h in light-or dark-grown seedlings. No in vitro effect of the chemicals on PAL activity was found at concentrations up to 0.5 mM. Hydroxyphenolic compound levels increased within 24 to 72 h (per gram fresh weight basis) in light- or dark-grown soybean axes treated with glyphosine, AMPA, or a metabolite mixture (AMPA, sarcosine, and glycine). Anthocyanin content was decreased by glyphosate and to a lesser extent by glyphosine, but was increased by AMPA and the mixture. Glyphosate significantly increased the chlorophylla/bratio and decreased total chlorophyll, but glyphosine decreased the chlorophyll content to a lesser degree.

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The effect of kinetin in relation to photocontrol of anthocyani biosynthesis in Brassica oleracea

Cited by 31 publications

References 8 publications

THE EFFECT OF CYTOKININS ON GROWTH and PIGMENT ACCUMULATION OF RADISH SEEDLINGS (RAPHANUS SATIVUS L.) GROWN IN THE DARK and AT DIFFERENT LIGHT QUANTA FLUENCE RATES*

THE EFFECT OF CYTOKININS ON GROWTH and PIGMENT ACCUMULATION OF RADISH SEEDLINGS (RAPHANUS SATIVUS L.) GROWN IN THE DARK and AT DIFFERENT LIGHT QUANTA FLUENCE RATES*

Induction of anthocyanin synthesis in relation to embryogenesis in a carrot suspension culture: Correlation of metabolic differentiation with morphological differentiation

Effects of Glyphosate on Metabolism of Phenolic Compounds: VI. Effects of Glyphosine and Glyphosate Metabolites on Phenylalanine Ammonia-Lyase Activity, Growth, and Protein, Chlorophyll, and Anthocyanin Levels in Soybean (Glycine max) Seedlings

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