Journal
PHOTOSYNTHETICA
Volume 52, Issue 2, Pages 186-192Publisher
ACAD SCIENCES CZECH REPUBLIC, INST EXPERIMENTAL BOTANY
DOI: 10.1007/s11099-014-0021-1
Keywords
abiotic stress; acai palm; ascorbate; glutathione; photosynthesis; submergence
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Funding
- Universidade Federal Rural da Amazonia (UFRA/Brazil)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq/Brazil)
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This study investigated whether gas exchange and the present content of antioxidant compounds can contribute to the survival of Euterpe oleracea plants in environments of frequent waterlogging. A factorial randomised, experimental design included two distinct water conditions ( waterlogging and control) and five evaluation times (0, 6, 12, 18, and 24 d). Gas-exchange parameters, leaf temperature, electrolyte leakage, and contents of antioxidant compounds were measured. Waterlogging did not promote significant alterations in net photosynthetic rate and transpiration, and stomatal conductance was reduced only after 18 d. Malondialdehyde and glutathione contents did not significantly change during waterlogging. Additionally, electrolyte leakage was significant only after 18 d of waterlogging. Thus, this study revealed that maintenance in gas exchange and antioxidant compounds might contribute to the survival of E. oleracea plants in environments exposed to waterlogging.
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