2014
DOI: 10.1016/j.jplph.2014.08.010
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Individual phenolic response and peroxidase activity in peel of differently sun-exposed apples in the period favorable for sunburn occurrence

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Cited by 37 publications
(35 citation statements)
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“…Regarding solar radiation, our results demonstrate that PPFD values found in the non-netted treatment significantly contribute to the increase in sun damage with browning of the apple fruit peel for both 'Gala' and 'Fuji'; this is equivalent to the presence of symptoms of slight sunburn (Figure 3) as reported by other studies (Zupan et al, 2014). However, these PPFD thresholds did not cause photo-oxidative sunburn as previously reported by other authors (Felicetti and Schrader, 2009a;Racsko and Schrader, 2012).…”
Section: Discussionsupporting
confidence: 86%
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“…Regarding solar radiation, our results demonstrate that PPFD values found in the non-netted treatment significantly contribute to the increase in sun damage with browning of the apple fruit peel for both 'Gala' and 'Fuji'; this is equivalent to the presence of symptoms of slight sunburn (Figure 3) as reported by other studies (Zupan et al, 2014). However, these PPFD thresholds did not cause photo-oxidative sunburn as previously reported by other authors (Felicetti and Schrader, 2009a;Racsko and Schrader, 2012).…”
Section: Discussionsupporting
confidence: 86%
“…However, it was clearly demonstrated in our study that netting increased Fv/ Fm values in both cultivars for fruit growing on the tree as well as picked fruit (Figures 7,8,and 9). A decrease in Fv/Fm under radiation stress reflects the damage to the photosystem II complex (Qiu and Lu, 2003); this indicates that netting is effective in reducing the photo-inhibition process in sun-exposed apples for the attenuating effect of radiation that significantly contributes to sunburn development on the apple fruit peel (Racsko and Schrader, 2012;Zupan et al, 2014). There are reports for red 'Anjou' pears that show high tolerance when exposed to high incident light and high temperature; however, Fv/Fm efficiency was negatively affected under the same conditions (Li and Cheng, 2009).…”
Section: Discussionmentioning
confidence: 99%
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“…Dehydroascorbate and MDHA are transient species, and these oxidized forms thus typically constitute minor proportions of the total vitamin C content in plant tissues . It is generally accepted that preharvest exposure and adaptation to stress, for instance via high light / high‐temperature regimes, increase the antioxidant content in apples . Apple tissues with high levels of antioxidants, and in particular of AsA, are less susceptible to inoculation with B. cinerea …”
Section: Introductionmentioning
confidence: 99%
“…To avoid such complications one can separate the confounding compounds from the enzyme prior to quantifying enzyme activity. Approaches toward this end may included a range of separation techniques previously used in peroxidase quantification and/or purification studies [26][27][28][29][30][31][32][33][34].…”
Section: Introductionmentioning
confidence: 99%