The passion fruit liana (Passiflora edulis Sims, Passifloraceae) is tolerant to ozone
| Autor: | Francine Faia Fernandes, Giada Magni, Marisia Pannia Esposito, Cláudia Maria Furlan, Elena Paoletti, Yasutomo Hoshika, Elisa Carrari, Marisa Domingos, Poliana Cardoso-Gustavson, Marcela Regina Gonçalves da Silva Engela |
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| Rok vydání: | 2019 |
| Předmět: |
Environmental Engineering
Antioxidant 010504 meteorology & atmospheric sciences Passifloraceae medicine.medical_treatment Anatomical acclimatization 010501 environmental sciences medicine.disease_cause Photosynthesis 01 natural sciences Acclimatization Passiflora Ozone Botany medicine Environmental Chemistry Waste Management and Disposal Carotenoid Antioxidant system 0105 earth and related environmental sciences Liana chemistry.chemical_classification Air Pollutants Dose-Response Relationship Drug biology Vine species Polyphenols food and beverages biology.organism_classification Ascorbic acid Pollution Plant Leaves chemistry Seedlings Oxidative stress Tropical environment |
| Zdroj: | Science of the total environment 656 (2019): 1091–1101. doi:10.1016/j.scitotenv.2018.11.425 info:cnr-pdr/source/autori:Fernandes F.F., Esposito M.P., Engela M.R.G., Cardoso-Gustavson P., Furlan C.M., Hoshika Y., Carrari E., Magni G., Domingos M., Paoletti E./titolo:The passion fruit liana (Passiflora edulis Sims, Passifloraceae) is tolerant to ozone/doi:10.1016%2Fj.scitotenv.2018.11.425/rivista:Science of the total environment/anno:2019/pagina_da:1091/pagina_a:1101/intervallo_pagine:1091–1101/volume:656 |
| ISSN: | 0048-9697 |
| Popis: | Passiflora edulis Sims is a liana species of high economic interest and is an interesting model plant for understanding ozone action on disturbed vegetation. In this work we hypothesized that P. edulis has adaptive responses to oxidative stress that enable it to tolerate ozone damage based on its capacity to grow under a diversity of environmental conditions and to dominate disturbed areas. We exposed seedlings to three levels of ozone in a Free-Air Controlled Exposure (FACE) system (22, 41 and 58 ppb h AOT40 and 13.52, 17.24 and 20.62 mmol m−2 POD0, over 97 days) for identifying its tolerance mechanisms. Anatomical (leaf blade structure and fluorescence emission of chloroplast metabolites), physiological (leaf gas exchange, growth rate and biomass production) and biochemical (pigments, total sugars, starch, enzymatic and non-enzymatic antioxidant metabolites, reactive oxygen species and lipid peroxidation derivatives) responses were assessed. Ozone caused decreased total number of leaves, hyperplasia and hypertrophy of the mesophyll cells, and accelerated leaf senescence. However, O3 did not affect carbohydrates content, net photosynthetic rate, or total biomass production, indicating that the carboxylation efficiency and associated physiological processes were not affected. In addition, P. edulis showed higher leaf contents of ascorbic acid, glutathione (as well high ratio between their reduced and total forms), carotenoids, and flavonoids located in the chloroplast outer envelope membrane. Our results indicate that P. edulis is an O3-tolerant species due to morphological acclimation responses and an effective antioxidant defense system represented by non-enzymatic antioxidants, which maintained the cellular redox balance under ozone. |
| Databáze: | OpenAIRE |
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