EurekaMag
+ Translate
+ Most Popular
Gaucher's disease;thirty-two years experience at Siriraj Hospital
A study of Macrobathra Meyrick from China (Lepidoptera, Cosmopterigidae)
First occurrence in ores of tetragonal chalcocite
Effects of trace element nutrition on sleep patterns in adult women
N.Z. range management guidelines. 2. Design of grazing management systems for tussock country
A case of lipoma of the esophagus
A revision of world Acanthosomatidae (Heteroptera: Pentatomidae): keys to and descriptions of subfamilies, tribes and genera, with designation of types
Life history of the coronate scyphozoan Linuche unguiculata (Swartz, 1788)
Perceptual restoration of obliterated sounds
Mutagenicity studies on two chromium(III) coordination compounds
The formation of the skeleton. I. Growth of a long bone. 1st appearance of a center of calcification
Leucopenia and abnormal liver function in travellers on malaria chemoprophylaxis
The joint commission: four key root causes loom large in sentinel event data
Treatment of vitiligo with topical 15% lactic acid solution in combination with ultra violet-A
Behaviour of dairy cows within three hours after feed supply: I. Influence of housing type and time elapsing after feed supply
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Management and control of patients with type 2 diabetes mellitus in Lebanon: results from the International Diabetes Management Practices Study (IDMPS)
The diet composition and nutritional knowledge of patients with anorexia nervosa
Physoporella croatica Herak, 1958 of the Slovak karst Anisian (Slovakia, the West Carpathians Mts.)
Bright lights, big noise. How effective are vehicle warning systems?
Ein Plesiosaurier-Rest mit Magensteinen aus mittlerem Lias von Quedlinburg
Incidence of Chlamydia trachomatis in patients with sterility
Monster soup: the microscope and Victorian fantasy
Preliminary tests with residual sprays against poultry lice
Duration of the life of plants in phylogeny

Diurnal operation of the xanthophyll cycle and the antioxidant system in apple peel


Diurnal operation of the xanthophyll cycle and the antioxidant system in apple peel



Journal of the American Society for Horticultural Science e 129(3): 313-320



Xanthophyll cycle conversion and the antioxidant system in the peel of apple fruit (Malus xdomestica Borkh. 'Liberty') were monitored in the field over a diurnal course at about 3 months after full bloom. Compared with leaves, sun-exposed peel of apple fruit had much lower photosystem II operating efficiency at any given photon flux density (PFD) and a larger xanthophyll cycle pool size on a chlorophyll basis. Zeaxanthin (Z) level increased with rising PFD in the morning, reached the highest level during midday, and then decreased with falling PFD for the rest of the day. At noon, Z accounted for >90% of the xanthophyll cycle pool in the fruit peel compared with only 53% in leaves. Efficiency of excitation transfer to PSII reaction centers (F(v)'/F(m)') was negatively related to the level of Z in fruit peel and leaves throughout the day. In fruit peel, the antioxidant enzymes in the ascorbate-glutathione cycle, ascorbate peroxidase (APX), monodehydroascorbate reductase (MDAR), dehydroascorbate reductase (DHAR) and glutathione reductase (GR) showed a diurnal pattern similar to that of incident PFD. In contrast, the activities of APX and GR in leaves did not change significantly during the day although activities of both MDAR and DHAR were higher in the afternoon than in the morning. In both fruit peel and leaves, superoxide dismutase activity did not change significantly during the day; catalase activity showed a diurnal pattern opposite to that of PFD with much lower activity in fruit peel than in leaves. The total ascorbate pool was much smaller in fruit peel than in leaves on an area basis, but the ratio of reduced ascorbate to oxidized ascorbate reached a maximum in the early afternoon in both fruit peel and leaves. The total glutathione pool, reduced glutathione and the ratio of reduced glutathione to oxidized glutathione in both fruit peel and leaves also peaked in the early afternoon. We conclude that the antioxidant system as well as the xanthophyll cycle responds to changing PFD over the course of a day to protect fruit peel from photooxidative damage.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 004110849

Download citation: RISBibTeXText

Related references

Diurnal operation of the xanthophyll cycle and the antioxidant system in apple peel. Journal of the American Society for Horticultural Science 129(3): 313-320, 2004

Diurnal changes of xanthophyll cycle and antioxidant enzymes in the peel of apple fruit. HortScience 38(5): 837, 2003

The role of anthocyanin in photoprotection and its relationship with the xanthophyll cycle and the antioxidant system in apple peel depends on the light conditions. Physiologia Plantarum (København 1948) 149(3): 354-366, 2013

The role of anthocyanin in photoprotection and its relationship with the xanthophyll cycle and the antioxidant system in apple peel depends on the light conditions. Physiologia Plantarum 149(3): 354-366, 2013

Xanthophyll cycle-dependent thermal dissipation and the antioxidant system of 'Gala' apple peel in response to nitrogen supply. HortScience 40(4): 1097-1098, 2005

The sun-exposed peel of apple fruit has higher xanthophyll cycle-dependent thermal dissipation and antioxidants of the ascorbate-glutathione pathway than the shaded peel. Plant Science 165(4): 819-827, 2003

Operation of the xanthophyll cycle in higher plants in response to diurnal changes in incident sunlight. Planta 186(3): 390-398, 1992

CO2 assimilation, carbohydrate metabolism, xanthophyll cycle, and the antioxidant system of 'Honeycrisp' apple leaves with zonal chlorosis. Journal of the American Society for Horticultural Science 129(5): 729-737, 2004

CO2 assimilation, carbohydrate metabolism, xanthophyll cycle, and the antioxidant system of 'Honeycrisp' apple leaves with zonal chlorosis. Journal of the American Society for Horticultural Science 129(5): 729-737, 2004

Operation of the xanthophyll cycle in non-stressed and stressed cells of Dunaliella salina Teod. in response to diurnal changes in incident irradiation: A correlation with intracellular beta-carotene content. Journal of Plant Physiology 146(4): 547-553, 1995

Coordination between xanthophyll cycle and antioxidant system inSargassum thunbergii(Sargassaceae, Phaeophyta) in response to high light and dehydration stresses. Journal of Applied Phycology 28(4): 2587-2596, 2016

Both xanthophyll cycle-dependent thermal dissipation and the antioxidant system are up-regulated in grape (Vitis labrusca L cv Concord) leaves in response to N limitation. Journal of Experimental Botany 54(390): 2165-2175, 2003

Xanthophyll cycle and diurnal PSII regulation. Plant Physiology (Rockville) 108(2 Suppl): 17, 1995

Exposure of the Shaded Side of Apple Fruit to Full Sun Leads to Up-regulation of Both the Xanthophyll Cycle and the Ascorbate-glutathione Cycle. HortScience 39(4): 887, 2004

Exposure of the shaded side of apple fruit to full sun leads to up-regulation of both the xanthophyll cycle and the ascorbate-glutathione cycle. Plant Science 166(6): 1479-1486, 2004