Antioxidant enzymes and lipid peroxidation during aging of Chrysanthemum morifolium RAM petals

Bártoli, Carlos Guillermo; Simontacchi, Marcela; Guiamet, Juan José; Montaldi, Edgardo R.; Puntarulo, Susana

doi:10.1016/0168-9452(94)04020-h

Cited by 71 publications

(42 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Lipid peroxidation was carried out following the method of Bartoli et al (1995). Five hundred milligram of tepals were homogenized in 5 mL of 50 mmol L À1 potassium phosphate buffer (pH 7.0) and 0.1% (w/v) BHT.…”

Section: Lipid Peroxidationmentioning

confidence: 99%

“…Free radicals play a key role in senescence of seeds (Stewart and Bewley, 1980;Puntarulo and Boveris, 1990), fruits (Brennan and Frenkel, 1977;Baker et al, 1978) and petals (Paulin et al, 1986;Droillard et al, 1987;Bartoli et al, 1995). Membrane breakdown and ethylene biosynthesis, which appear to be closely linked, seem to involve free radicals (Paulin et al, 1986).…”

Section: Introductionmentioning

confidence: 97%

See 1 more Smart Citation

Decline in ascorbate peroxidase activity – A prerequisite factor for tepal senescence in gladiolus

Hossain

Mandal

Datta

et al. 2006

Journal of Plant Physiology

View full text Add to dashboard Cite

Section: Lipid Peroxidationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Decline in ascorbate peroxidase activity – A prerequisite factor for tepal senescence in gladiolus

Hossain

Mandal

Datta

et al. 2006

Journal of Plant Physiology

View full text Add to dashboard Cite

“…There is often a good correlation between ion leakage and freezing tolerance (Levitt, 1980). Also, Electrolyte leakage is often used as a parameter for determining tissue damage as the loss of membrane's selective perme- ability (Bartoli et al, 1995). In our experiments, the lowest of damage symptoms and EL under cold stress (-4°C) were observed in 0.5 mM SA treatment and with increasing concentration from 0.5 to 2, damage symptoms and EL were increased.…”

Section: Methodsmentioning

confidence: 49%

Effect of Salicylic Acid on Alleviating of Electrolyte Leakage and Flower Organ Damage in Apricot (Prunus armeniaca L. cv. ‘Shahroudi’)

2013

View full text Add to dashboard Cite

One of the most important limiting factors in spread of apricot in Iran is late spring frost, which damages flower bud and decrease total yield of crop. It has been found that salicylic acid (SA) plays a beneficial role during plant response to chilling and freezing stresses. To evaluate the effects of salicylic acid on alleviating of cold stress, the flower buds (FBs) of Prunus armeniaca L. cv. 'Shahroudi' were sprayed at pink cluster stage with SA at 4 levels (0, 0.5, 1 and 2 mM) and were then exposed to artificial cold stress (4 h at -4°C) or without cold stress (+ 25). Experimental attributes including electrolyte leakage of FBs and percentage of damage (PD) of pistil, anthers and petals to temperature treatments were determined. The results showed that at -4°C the lowest and highest PD and EL of FBs were observed in application of 0.5 and 0 mM SA, respectively. The highest and lowest PD of flower organ and EL were obtained in application of 0 and 2 mM SA, respectively at +25°C. Based on the results of this experiment, SA alleviates the negative effect of cold stress on electrolyte leakage and flower organ damages in apricot cv. 'Shahroudi' , depending on the concentrations of SA used.

show abstract

“…In Chrysanthemum morifolium petals, a progressive increase in peroxidase activity was measured as a function of time during flower petal senescence (Bartoli et al 1995). This increase was accompanied by an increase in other antioxidant enzymes, suggesting a coordinated defense mechanism of the plant to control and delay aging.…”

Section: Discussionmentioning

confidence: 99%

Active anthocyanin degradation in Brunfelsia calycina (yesterday–today–tomorrow) flowers

Vaknin

Bar‐Akiva

Ovadia

et al. 2005

Planta

117

106

View full text Add to dashboard Cite

Anthocyanins are the largest group of plant pigments responsible for colors ranging from red to violet and blue. The biosynthesis of anthocyanins, as part of the larger phenylpropanoid pathway, has been characterized in great detail. In contrast to the detailed molecular knowledge available on anthocyanin synthesis, very little is known about the stability and catabolism of anthocyanins in plants. In this study we present a preliminary characterization of active in planta degradation of anthocyanins, requiring novel mRNA and protein synthesis, in Brunfelsia calycina flowers. Brunfelsia is a unique system for this study, since the decrease in pigment concentration in its flowers (from dark purple to white) is extreme and rapid, and occurs at a specific and well-defined stage of flower development. Treatment of detached flowers with protein and mRNA synthesis inhibitors, at specific stages of flower development, prevented degradation. In addition, treatment of detached flowers with cytokinins delayed senescence without changing the rate of anthocyanin degradation, suggesting that degradation of anthocyanins is not part of the general senescence process of the flowers but rather a distinctive and specific pathway. Based on studies on anthocyanin degradation in wine and juices, peroxidases are reasonable candidates for the in vivo degradation. A significant increase in peroxidase activity was shown to correlate in time with the rate of anthocyanin degradation. An additional indication that oxidative enzymes are involved in the process is the fact that treatment of flowers with reducing agents, such as DTT and glutathione, caused inhibition of degradation. This study represents the first step in the elucidation of the molecular mechanism behind in vivo anthocyanin degradation in plants.

show abstract

Antioxidant enzymes and lipid peroxidation during aging of Chrysanthemum morifolium RAM petals

Cited by 71 publications

References 38 publications

Decline in ascorbate peroxidase activity – A prerequisite factor for tepal senescence in gladiolus

Decline in ascorbate peroxidase activity – A prerequisite factor for tepal senescence in gladiolus

Effect of Salicylic Acid on Alleviating of Electrolyte Leakage and Flower Organ Damage in Apricot (Prunus armeniaca L. cv. ‘Shahroudi’)

Active anthocyanin degradation in Brunfelsia calycina (yesterday–today–tomorrow) flowers

Contact Info

Product

Resources

About