+ Translate

Oxidative stress, antioxidant capacity and ethylene production during ageing of cut carnation (Dianthus caryophyllus) petals

, : Oxidative stress, antioxidant capacity and ethylene production during ageing of cut carnation (Dianthus caryophyllus) petals. Journal of Experimental Botany 47(297): 596-601

The objective of this work was to study the role of free radicals in relation to ethylene production during ageing of cut carnation petals. Ethylene production by freshly cut flowers was negligible, but 8 d after cutting ethylene production began to increase and reached a peak by day 9, before beginning to decline again. The efflux of electrolytes (membrane damage index) increased 101% and 2',7'-dichlorofluorescein oxidation rate (oxidative stress index) increased 53% from day 8 to day 11 after detachment. Ethylene peak was either (a) not affected significantly by the supplementation of exogenous ethylene on the day of cutting, or (b) expanded between days 7-9 after ethylene supplementation on day 6 of cutting, or (c) was inhibited by amino-oxyacetic acid and paraquat treatments. After ethylene supplementation, conductivity and 2',7'-dichlorofluorescein oxidation increased significantly as compared to control petals, and the activity of antioxidant enzymes was not affected. However, both alpha-tocopherol and glutathione content decreased significantly after ethylene supplementation on day 6 after detachment. Amino-oxyacetic acid treatment prevented the increases in conductivity and 2,7-dichlorofluorescein oxidation, did not alter the activities of antioxidant enzymes and significantly increased the content of alpha-tocopherol and glutathione as compared to control carnation petals. Paraquat treatment paralleled qualitatively ethylene supplementation after 6 d of cutting. Taken as a whole, the data presented here may be understood as experimental evidence of a close association between ethylene production and oxidative stress in ageing of cut carnations.

(PDF same-day service: $19.90)

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 002914149

DOI: 10.1093/jxb/47.4.595

PDF Full Text: Submit

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:

Other references

Lambert C.; Buis R.; L'hardy Halos M T., 1990: Morphogenetic determination of the axial cells of antithamnion plumula ceramiaceae rhodophyta early identification of the nature of the whorls. Antithamnion plumula axial cells are either "cladomophoric" (bearing a lateral cladom) or "pleuridiophoric" (with pleuridia only). The time required for their formation (generation time) and their length were the two variables...

B.Y.Ping; Shan Lei; Wang XingJun; X.P.ngLi; Zhou ZhongXin; M.J.ngJiu, 1999: Regeneration of transgenic pepper plants resistant to TMV and CMV and its resistance identification. Transgenic plants were obtained from the pepper (Capsicum annuum) varieties Nongda 40 and Xiangyan 1 based on the construction of a bivalent plant expression vector carrying tobacco mosaic virus coat protein (TMV cp) and cucumber mosaic virus (CMV...

L.M.yec, L.; Legrand, O.; Larue, V.; Kawakami, M.; Marie, J.P.; Calvo, F.; Hantz, E.; Taillandier, E., 2000: Magnetic resonance spectroscopy of cellular lipid extracts from sensitive, resistant and reverting K562 cells and flow cytometry for investigating the P-glycoprotein function in resistance reversion. The proton NMR spectra of K562 cells contain resonances of lipids. When these cells acquire multidrug resistance phenotype, the NMR lipid signals are modified and partially recovered when the resistance is reversed. The goals of the present study...

Beckett, R., 2012: Birthbeats: music to your ears. Promoting normal birth is fundamental to the midwife's role yet it is easy to overlook simple coping strategies on a busy labour ward. As The Code (Nursing and Midwifery Council (NMC) 2008) directs us to ensure that our practice is evidence b...

Sommerfeld, R.M.; Grant, L.M.; Schweiger, J.W., 1971: Non-surgical treatment of velopharyngeal inadequacy in the edentulous patient. Illinois Dental Journal 40(6): 366-369

Caraceni, P.; Domenicali, M.; Bernardi, M., 2008: The endocannabinoid system and liver diseases. Endogenous cannabinoids (EC) are ubiquitous lipid signalling molecules provided by a number of central and peripheral effects, which are mainly mediated by the specific cannabinoid receptors CB(1) and CB(2). Although the expression of these recept...

Turnsek D., 1989: Diversifications of corals and coral reef associations in Mesozoic palaeogeographic units of northwestern Yugoslavia. Memoir of the Association of Australasian Palaeontologists 8: 283-289

Bladt, O.; Vanhoenacker, R.; Bevernage, C.; Leyman, P., 2008: Isolated noncompaction of ventricular myocardium. Diagnosis with multidetector computed tomography. Noncompaction of the ventricular myocardium is a cardiomyopathy thought to be caused by arrest of normal embryogenesis of the endocardium and myocardium. Non-compaction presents as an isolated form or in association with other congenital anomalies...

Davydova, T.V., 1986: Contacts between basal processes of visual cones in the outer plexiform layer of the ocular sensory tunic in turtles. Neuroscience and Behavioral Physiology 16(1): 6-11

Tillitt, D.E.; Kraft, C.E.; Honeyfield, D.C.; Fitzsimons, J.D., 2012: Thiamine deficiency: a viable hypothesis for paralytic syndrome in Baltic birds. Commentary on Sonne et al., 2012. A review of the factors causing paralysis in wild birds: implications for the paralytic syndrome observed in the Baltic Sea. Science of the Total Environment 416:32-39. Science of the Total Environment 433: 561-2; Author Reply 563-4