Banca de DEFESA: ANYELA PIERINA VEGA QUISPE

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE: ANYELA PIERINA VEGA QUISPE
DATA: 31/07/2024
HORA: 09:00
LOCAL: Anfiteatro DCS02
TÍTULO:

PRIMING EFFECT ON BROCCOLI (Brassica oleracea var. italica) SEEDLINGS WITH SELENIUM AND IODINE: ACTIVATION OF BIOCHEMICAL MECHANISMS TO MITIGATE COLD STRESS

PALAVRAS-CHAVES:

Selenium and iodine combination, enzymatic antioxidant system, osmoprotectants, oxidative stress, beneficial elements

PÁGINAS: 60
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Ciência do Solo
ESPECIALIDADE: Fertilidade do Solo e Adubação
RESUMO:

The present research work focused on the study of the biochemical adaptation mechanisms of broccoli cultivar Avenger when exposed to low temperatures (2ºC). The objective of this work was to investigate the priming effect of various doses of Se and I on broccoli seedlings exposed to low temperatures to improve physiological defense mechanisms. In this way, it was intended to explain the defense mechanisms activated in this crop at the seedling stage by the application of Se, I and the interaction of Se+I when exposed to stress. Because, it is in the initial stages where the crop is more prone to suffer some kind of damage, compared to a fully developed plant. Since it has not yet fully developed and lacks the mechanisms to protect itself from stress. This work was conducted in the greenhouse at the Federal University of Lavras and then the plants were transferred to a phytotron to simulate stress conditions for three days. Selenium and I were applied before stress at different doses. The leaves were then collected in liquid nitrogen and biochemical analyses were performed at the Laboratory of Physiology of Cultivated Plants of the Department of Biology (DBI)-UFLA. Biochemical analyses of the osmoprotectant content and the enzymatic antioxidant system were performed to try to explain how the broccoli crop acted to reduce lipid peroxidation through the quantification of MDA. Finally, the results indicated that indeed the application of Se, I and Se+I managed to visually decrease leaf damage and this is explained by the bitplots of the Principal Component Analysis (PCA).

MEMBROS DA BANCA:
Externo à Instituição - ANDRÉ RODRIGUES DOS REIS - UNESP (Suplente)
Externo à Instituição - JOSE LAVRES JUNIOR - USP (Membro)
Externo à Instituição - MARIANA ROCHA DE CARVALHO - UFLA (Membro)
Externo ao Programa - PAULO EDUARDO RIBEIRO MARCHIORI - DBI/ICN (Membro)
Interno - GUILHERME LOPES (Suplente)
Presidente - LUIZ ROBERTO GUIMARAES GUILHERME (Membro)