Influence of frost damage on the sugars and sugar alcohol composition in quince (Cydonia oblonga Mill.) floral nectar
Authorized Users Only
AuthorsFotirić-Akšić, Milica M.
Tešić, Živoslav Lj.
Article (Published version)
MetadataShow full item record
Cold stress adversely affects growth and productivity, and triggers a series of morphological, physiological, biochemical and molecular changes in plants. Since sugars are present in all floral nectars in greater amounts than any other constituent, the aim of this study was to examine how frost exposure changes sugar metabolism and how it affects on the content of sugar components in the nectar of quince. Three quince cultivars ('Vranjska', 'Triumph' and 'Leskovac. ka') were investigated in this study. The contents of sugars (glucose, fructose, sucrose, trehalose, maltose, isomaltose, rhamnose, arabinose, ribose, melezitose, raffinose, and panose) and sugar alcohols (sorbitol, erythritol, mannitol and galactitol) were analyzed by high performance anion exchange chromatography (HPAEC) with amperometric detection. The results showed that after late spring frosts and irreversible damage of flower parts, the nectar of the three quince cultivars contained elevated levels of fructose, trehal...ose, arabinose, ribose, rhamnose, raffinose, galactitol and mannitol, indicating an impairment of central carbohydrate metabolism. The ratios between individual sugars, such as the glucose/fructose ratio, were changed in the nectar of damaged flowers in all three quince cultivars. The examined cultivars showed similar sugar response to cold stress. The only exception was 'Leskovac. ka' for the glucose and melezitose pathway, which means that composition of those two sugars changed significantly according to the genotype. The larger are the carbohydrates reserves in different parts of a fruit tree, the higher is the tolerance to any form of frost damage, the results of this study could help in the understanding of how different quince cultivars react to this kind of stress and how they modulate their sugar metabolism.
Keywords:HPAEC / Late spring frost / Nectar / Quince / Sugar
Source:Acta Physiologiae Plantarum, 2015, 37, 1
- Springer Heidelberg, Heidelberg
- The application of new genotypes and technological innovations for the purpose of improvement of fruit-growing and viticultural production (RS-31063)
- Development of integrated management of harmful organisms in plant production in order to overcome resistance and to improve food quality and safety (RS-46008)
- Studying climate change and its influence on environment: impacts, adaptation and mitigation (RS-43007)
- Improvement and development of hygienic and technological procedures in production of animal originating foodstuffs with the aim of producing high-quality and safe products competetive on the global market (RS-46009)
- Advancing research in agricultural and food sciences at Faculty of Agriculture, University of Belgrade (EU-316004)