Effects of acute ozone stress on reproductive traits of tomato, fruit yield and fruit composition

Thwe Aye Aye, Vercambre Gilles, Gautier Hélène, Gay Frédéric, Phattaralerphong Jessada, Kasemsap Poonpipope. 2015. Effects of acute ozone stress on reproductive traits of tomato, fruit yield and fruit composition. Journal of the Science of Food and Agriculture, 95 (3) : 614-620.

Quartile : Q1, Sujet : AGRICULTURE, MULTIDISCIPLINARY / Quartile : Q2, Sujet : FOOD SCIENCE & TECHNOLOGY / Quartile : Q2, Sujet : CHEMISTRY, APPLIED

Résumé : BACKGROUND: Tomato is sensitive to ozone. Fruit growth and composition are altered under ozone stress by modification of reproductive development. Fifty-one-day-old plants were exposed to three concentrations of ozone (200, 350 and 500 ??gm?3) for 4 h. RESULTS: Ozone reduced well-developed fruit number and fruit size, but it did not significantly affect flowering rate and fruit setting rate. The effect of ozone depends on organ developmental stage at the time of ozone application, as flowers and young fruits at the time of ozone exposurewere more affected. Contents of total soluble sugars (total SS), total organic acids (total OA) and ascorbic acid (AsA) increased in fruits harvested from ozone-treated plants. Tomato fruit composition was altered under ozone stress, leading to a lower sugar:acid ratio. These changes weremostly due to increased contents of malic acid, ascorbate and glucose despite a decrease in sucrose. CONCLUSION: Acute ozone exposure up to 500 ??gm?3 greatly influences tomato fruit quality. As final fruit yield was not significantly reduced, it highlighted that there may be compensatory mechanisms present in the reproductive structures of tomato. Further research would be necessary to determine how reproductive traits are affected by repeated ozone exposure or longer-term exposure.

Mots-clés Agrovoc : tomate, ozonisation, ozone, fruits

Classification Agris : H50 - Troubles divers des plantes
F62 - Physiologie végétale - Croissance et développement
F60 - Physiologie et biochimie végétale

Champ stratégique Cirad : Axe 1 (2014-2018) - Agriculture écologiquement intensive

Auteurs et affiliations

• Thwe Aye Aye, Yezin Agricultural University (MMR)
• Vercambre Gilles, INRA (FRA)
• Gautier Hélène, INRA (FRA)
• Gay Frédéric, CIRAD-PERSYST-UMR Eco&Sols (THA) ORCID: 0000-0002-7624-8489
• Phattaralerphong Jessada, Kasetsart University (THA)
• Kasemsap Poonpipope, Kasetsart University (THA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/575549/)

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