Polyamines and carnation flower senescence: Endogenous levels and the effect of applied polyamines on senescence

Upfold, S. J.; Staden, J. Van

doi:10.1007/bf00024594

Cited by 9 publications

(3 citation statements)

References 23 publications

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“…It was important also to evaluate the possibility of the involvement of endogenous polyamines in the control of expression of cytokinin-dependent genes. The content of endogenous polyamines in plants varies widely, from nanomoles to hundreds of nanomoles per milligram of fresh weight [10,39,41]. In Arabidopsis, like many other plants, triamine spermidine prevails [41].…”

Section: Discussionmentioning

confidence: 99%

Polyamines suppress manifestation of cytokinin primary effects

Rakova

Romanov

2005

Russ J Plant Physiol

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Using Amaranthus and transgenic Arabidopsis P ARR5 : GUS seedlings in bioassays, we studied the effects of exogenous polyamines on the development of cytokinin-induced effects based on the expression of the cytokinin primary response genes. Transgenic Arabidopsis contained a reporter GUS gene under the control of Arabidopsis ARR5 promoter. In both bioassays, we found that all polyamines tested suppressed the effects induced by 5 µ M benzyladenine (BA). Spermine and putrescine were more efficient as BA antagonists than cadaverine and spermidine. Polyamines affected posttranscriptional stages of BA action but did not interfere with the accumulation of cytokinin-dependent mRNA. This fact contradicts the hypotheses about the existence of a common receptor for polyamines and BA or about polyamines as second messengers in the cytokinin signaling pathway. In Arabidopsis seedlings, exogenous polyamines suppressed BA effects at low (micromolar) concentrations comparable with BA concentrations. The incubation of Arabidopsis seedlings with aminoguanidine (an inhibitor of putrescine and cadaverine catabolism) for 24 h resulted in a significant reduction in the activity of the cytokinin primary response gene. These data indicate that endogenous polyamines can modulate considerably the amplitude of the cytokinin primary response gene expression in vivo.Abbreviations and designations : AG-aminoguanidine; BAbenzyladenine; MU-4-methylunbelliferone; MUG-4-methylumbelliferyl-β -D-glucuronide; P ARR5 : GUS -the reporter GUS gene under the control of the promoter of the cytokinin-dependent ARR5 gene.

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Section: Discussionmentioning

confidence: 99%

Polyamines suppress manifestation of cytokinin primary effects

Rakova

Romanov

2005

Russ J Plant Physiol

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“…Pandey et al (2000) reported that the effect of Put on the extending vase life of cut lisianthus flower might be due to suppressed water loss, inhibited ethylene action and decreased transpiration rate. However, a study conducted on carnation stems conditioned in solutions of PAs confirmed their effect on the extension of vase life, but only when flowers were treated with PAs at the bud stage (Upfold and Van Staden, 1991). Rubinowska et al 2012investigated the effect on postharvest quality of conditioning of Rosa 'Red Berlin' stems in solutions of PAs: Spd at a concentration of 1.5 and 3 mmol dm-3; Spm at a concentration of 1 and 2 mmol dm-3; and Put at 2 and 4 mmol dm-3.…”

Section: Polyaminesmentioning

confidence: 99%

Gibberellin and polyamines in plant growth, development, and postharvest senescence of ornamental plants – a review

Amorim¹,

Medeiros²,

Oliveira³

et al. 2017

Amaz. Jour. of Plant Resear.

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The polyamines, putrescine, spermidine and spermine, are low-molecular weight substances, synthesized in eucariot cells from their immediate precursor, ornithine. The polyamines are found in fruits and vegetables, foods of animal origin and fermented food products. As plant growth regulators, are believed to be involved in several physiological processes. Gibberellins are plant hormones that regulate growth and influence various developmental processes and are derived via the ent-gibberellane skeleton. Gibberellins are synthesized by the terpenoid pathway in plastids and then modified in the endoplasmic reticulum and cytosol until they reach their biologically-active form. Here, we show the importance gibberellin and polyamines functions in plant growth, development, and postharvest senescence of various ornamental plants. Studies initiated on the application of the polyamines and gibberellins in ornamental plants should improve our knowledge in the future.

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“…In plants, polyamines (Pas) have roles in many physiological processes from the stimulation of cell division, differentiation and growth to stress response [ 113 ]. It has been shown that in Dianthus caryophyllus and gerbera petals the addition of different concentration of Pas, such as putrescine and spermine, caused a delay in senescence [ 114 , 115 ] probably inhibiting the ethylene synthesis. This is consistent with the results obtained by Lee et al [ 116 ], where the application of a polyamine synthesis inhibitor on Dianthus caryophyllus petals led to increased levels of ACC synthase and aminocyclopropanecarboxylate oxidase (ACC oxidase) mRNAs as well as to increased ethylene production.…”

Section: The Molecular Regulatory Network Of Flower Development Amentioning

confidence: 99%

The Antioxidants Changes in Ornamental Flowers during Development and Senescence

2013

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The concentration of antioxidant compounds is constitutive and variable from species to species and is also variable considering the development of the plant tissue. In this review, we take into consideration the antioxidant changes and the physiological, biochemical and molecular factors that are able to modulate the accumulation of antioxidant compounds in ornamental flowers during the whole development process until the senescence. Many ornamental flowers are natural sources of very important bioactive compounds with benefit to the human health and their possible role as dietary components has been reported. The most part of antioxidants are flower pigments such as carotenoids and polyphenols, often present in higher concentration compared with the most common fruits and vegetables. The antioxidants content changes during development and during senescence many biochemical systems and molecular mechanisms are activated to counteract the increase of reactive oxygen species and free radicals. There is a tight correlation between antioxidants and senescence processes and this aspect is detailed and appropriately discussed.

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Polyamines and carnation flower senescence: Endogenous levels and the effect of applied polyamines on senescence

Cited by 9 publications

References 23 publications

Polyamines suppress manifestation of cytokinin primary effects

Polyamines suppress manifestation of cytokinin primary effects

Gibberellin and polyamines in plant growth, development, and postharvest senescence of ornamental plants – a review

The Antioxidants Changes in Ornamental Flowers during Development and Senescence

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