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Scientific Electronic Archives
Agricultural Science
DOI: 10.36560/17620241987
Submitted: 2024-07-26
Published: 2024-10-22

Oxidative stress in Oenocarpus bacaba and Oenocarpus mapora submitted to water deficit

Universidade Federal Rural da Amazônia
Universidade Federal Rural da Amazônia
Universidade Federal Rural da Amazônia
Universidade Federal Rural da Amazônia
Universidade Federal Rural da Amazônia
Universidade Federal Rural da Amazônia
Universidade Federal Rural da Amazônia
hydrical stress antioxidant activity metabolism

Abstract

The objective of this work was to evaluate the effects of oxidative stress generated by water deficiency and rehydration of the species Oenocarpus bacaba Mart. and Oenocarpus mapora H. Karsten. For this, six-month-old seedlings from the Aimex Germplasm Bank were transplanted into 6.0 kg pots of substrate. After that, the plants underwent acclimatization for 85 days, starting the water stress treatment. Collections for biochemical analysis were performed at 0, 15, 30 and 35 days. A completely randomized design (DIC) was used in a 2 x 2 x 4 factorial scheme, with two cultures (Bacaba and Bacabi), two treatments (stress and control), four periods and five replications. Water stress brought down CRA and carotenoid levels and increased levels of electrolyte leakage. In general, the activity of superoxide dismutase (SOD), ascorbate peroxidase (APX) and catalase (CAT) enzymes increased in plants during stress and experienced after 5 days of rehydration. Oenocarpus mapora was more sensitive to stress, as it is little domesticated, unlike Oenocarpus bacaba, which is more cultivated. Both recovered after the rehydration period.

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How to Cite

Baptista, K. R. S. D. P., Moraes, M. P. D., Marcelina da Silva, T., Jesus, K. M. D., Nogueira, G. A. D. S., Bronze, A. B. D. S., & Oliveira Neto, C. F. D. (2024). Oxidative stress in Oenocarpus bacaba and Oenocarpus mapora submitted to water deficit. Scientific Electronic Archives, 17(6). https://doi.org/10.36560/17620241987