The Antioxidants Changes in Ornamental Flowers during Development and Senescence

Cavaiuolo, Marina; Cocetta, Giacomo; Ferrante, António

doi:10.3390/antiox2030132

Cited by 88 publications

(68 citation statements)

References 161 publications

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“…Tocopherols, associated with thylakoid membranes, protect the cell against oxidative stress both by eliminating ROS, mainly 1 O 2 , and inhibiting the propagation of lipid peroxidation (Munné-Bosch and Alegre, 2002;Falk and Munné-Bosch, 2010). In petals, carotenoids and tocopherols tend to increase in early senescence and then decline (Cavaiuolo et al, 2013). The same trend has been reported in leaves for carotenoids, particularly zeaxanthin (Prochazkova et al, 2001) and tocopherols (Juvany et al, 2012).…”

Section: Ros Generation and Scavenging: Spatiotemporal Effectssupporting

confidence: 53%

Production and Scavenging of Reactive Oxygen Species and Redox Signaling during Leaf and Flower Senescence: Similar But Different

2016

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ORCID IDs: 0000-0003-3830-5857 (H.R.); 0000-0001-6523-6848 (S.M.-B.).Reactive oxygen species (ROS) play a key role in the regulation of many developmental processes, including senescence, and in plant responses to biotic and abiotic stresses. Several mechanisms of ROS generation and scavenging are similar, but others differ between senescing leaves and petals, despite these organs sharing a common evolutionary origin. Photosynthesis-derived ROS, nutrient remobilization, and reversibility of senescence are necessarily distinct features of the progression of senescence in the two organs. Furthermore, recent studies have revealed specific redox signaling processes that act in concert with phytohormones and transcription factors to regulate senescence-associated genes in leaves and petals. Here, we review some of the recent advances in our understanding of the mechanisms underpinning the production and elimination of ROS in these two organs. We focus on unveiling common and differential aspects of redox signaling in leaf and petal senescence, with the aim of linking physiological, biochemical, and molecular processes. We conclude that the spatiotemporal impact of ROS in senescing tissues differs between leaves and flowers, mainly due to the specific functionalities of these organs.

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Section: Ros Generation and Scavenging: Spatiotemporal Effectssupporting

confidence: 53%

Production and Scavenging of Reactive Oxygen Species and Redox Signaling during Leaf and Flower Senescence: Similar But Different

2016

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“…Ascorbic acid content reached the highest value in F2 (35.76 mg per 100 g of FW); afterward, it decreased up to 27.5 mg per 100 g of FW (F5) ( Figure 2D). Our results are in agreement with Cavaiuolo et al [47], who indicated an increase in the ascorbic acid content during early senescence, followed by a decrease in advanced senescence. The antioxidant activity, measured by DPPH activity and expressed in Trolox equivalent, was correlated with bioactive compound trends.…”

Section: Bioactive Compounds and Antioxidant Activitysupporting

confidence: 94%

Evaluation of Antioxidant Systems and Ascorbate-Glutathione Cycle in Feijoa Edible Flowers at Different Flowering Stages

Magri¹,

Adiletta

Petriccione³

2020

Foods

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Background: Feijoa (Acca sellowiana (O. Berg)) was initially introduced as an ornamental plant, but nowadays, it is widely cultivated for the numerous beneficial properties of its edible fruits. Feijoa flowers have been included in the list of edible flowers, but despite this, they are still considered niche products due to consumer skepticism and lack of publicity. Methods: This study evaluated the physicochemical traits, antioxidant system, and ascorbate-glutathione cycle in feijoa flowers at five flowering stages based on the Biologische Bundesanstalt, Bundessortenamt und CHemische Industrie (BBCH) scale. Results: The results showed that the optimal stage to harvest feijoa flower is the F2 stage characterized by high bioactive compounds content. Furthermore, the enzymes involved in oxidative stress and the ascorbate-glutathione cycle showed different trends during the flowering stages. Conclusions: This study provides new evidence to understand the possible role of bioactive compounds and ascorbate-glutathione cycle in the regulation of flower development, defining the optimal stage to harvest flowers.

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“…Nowadays a large number of publications report the beneficial effects of a diet rich in phytonutrients (Martin et al 2013;Sacco et al 2013;Miao et al 2014). Consumers have become more aware about quality and health-related features of crops and growing attention is paid to the antioxidant and health-related traits of fruit, vegetables (Rajarathnam et al 2013) and edible flowers (Cavaiuolo et al 2013). …”

Section: Phytonutrients: Leaf Pigments Secondary Metabolites and Vitmentioning

confidence: 98%

Biostimulants and crop responses: a review

Bulgari

Cocetta

Trivellini

et al. 2014

Biological Agriculture & Horticulture

490

273

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Agricultural growing practices have been evolving towards organic, sustainable or environmental friendly systems. The aim of modern agriculture is to reduce inputs without reducing the yield and quality. These goals can be achieved by breeding programmes but would be species specific and time consuming. The identification of organic molecules able to activate plant metabolism may allow an improvement in plant performance in a short period of time and in a cheaper way. Biostimulants are plant extracts and contain a wide range of bioactive compounds that are mostly still unknown. These products are usually able to improve the nutrient use efficiency of the plant and enhance tolerance to biotic and abiotic stresses. In this review, the state of the art and future prospects for biostimulants are reported and discussed. Moreover, particular attention has been paid to intensive agricultural systems such as horticultural and floricultural crops. In vegetables, the application of biostimulants allowed a reduction in fertilizers without affecting yield and quality. In leafy vegetables susceptible to nitrate accumulation, such as rocket, biostimulants have been able to improve the quality and keep the nitrates under the limits imposed by EU regulations. Moreover in leafy vegetables, biostimulants increased leaf pigments (chlorophyll and carotenoids) and plant growth by stimulating root growth and enhancing the antioxidant potential of plants. In floriculture, biostimulants used in bedding plant production stimulated the growth of plants, which reached the blooming and commercial stages earlier, thus optimizing space in the greenhouse.

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The Antioxidants Changes in Ornamental Flowers during Development and Senescence

Cited by 88 publications

References 161 publications

Production and Scavenging of Reactive Oxygen Species and Redox Signaling during Leaf and Flower Senescence: Similar But Different

Production and Scavenging of Reactive Oxygen Species and Redox Signaling during Leaf and Flower Senescence: Similar But Different

Evaluation of Antioxidant Systems and Ascorbate-Glutathione Cycle in Feijoa Edible Flowers at Different Flowering Stages

Biostimulants and crop responses: a review

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