Betacyanin Content Research Articles

Effect of Plant Growth Regulators on Betacyanin Synthesis in Celosia argentea var. cristata in the dark

Summary IAA, Eth and Kn at lower concentrations stimulated the betacyanin synthesis and depressed the hypocotyl length of dark grown Celosia argentea var. cristata seedlings, whereas CCC caused a decrease in the seedling growth as well as in the pigment content. ABA was found to be most effective in inducing the synthesis of betacyanin in the dark. GA 3 proved ineffective in altering the betacyanin content, though it showed antagonistic effects with ABA on the pigment level and hypocotyl length. It is concluded from the results of the experiments that IAA, Eth, Kn and ABA at specific concentrations control the synthesis of betacyanin via ethylene production in plant tissues.

Betacyanins of some chenopodiaceae

Four species of the Chenopodiaceae have been investigated for their betacyanin content. From the leaves of Suaeda fruticosa a new acylated pigment has been isolated and identified as citryl-celosianin.

Conditioning circadian rhythmic control of betacyanin content in Chenopodium rubrum by temperature and light intensity cycles during germination

Evidence is presented that a circadian rhythm in betacyanin accumulation in Chenopodium rubrum seedlings (ecotype 50°10′ N, 105°35′ W, selection 184) was initiated or synchronized by the cyclic temperature and light conditions that were imposed during germination. This rhythm was probably free-running in the constant light conditions that preceded the imposition of darkness. Rhythmic fluctuations in the time course of betacyanin content during darkness, which are probably due to betacyanin turnover, showed correlations with the alternating germination conditions, thus indicating that the rhythm is not initiated or rephased by the transition from light of 600 or 3000 ft-c to darkness. Light following darkness increased the respective level of betacyanin accumulation but did not alter the phasing of the rhythm as compared with darkness. The metabolic activity of the seedlings in the light, following darkness, depends on the specific phase of the endogenous rhythm at the time of the dark: light transition.

Betacyanins of the family cactaceae

Thirty-four species of the family Cactaceae have been investigated for their betacyanin content. All the species examined contain betanin and many of them also phyllocactin. Betanidin and some new betacyanins have a more limited occurrence.