Banca de QUALIFICAÇÃO: LORENE BIANCA ARAUJO TADAIESKY

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : LORENE BIANCA ARAUJO TADAIESKY
DATA : 21/12/2018
HORA: 15:00
LOCAL: Auditório do PPAGRO/UFRA
TÍTULO:

BRASSINOSTEROIDS MITIGATE IRON TOXICITY IMPROVING THE NUTRITIONAL STATUS, ANATOMICAL AND PHOTOCHEMICAL EFFICIENCY IN Oryza sativa L. PLANTS

PALAVRAS-CHAVES:

Brassinosteroids; iron; rice.

PÁGINAS: 48
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitotecnia
ESPECIALIDADE: Fisiologia de Plantas Cultivadas
RESUMO:

The EBR treated caused significant reductions in Fe concentrations of all tissues and increased the nutrient concentrations. To growth, the EBR induced significant increases in the shoot, root and total dry matter. The application of EBR reduced the negative effects due to Fe toxicity on chlorophyll fluorescence and gas exchanges. The Fe promoted increased in oxidant compounds, inducing cell damages, but EBR caused significant decreases in these variables. The treatment with EBR and exposed to Fe excess presented increases in pigments, compared the same treatments without EBR. Our results confirm the hypothesis that EBR attenuates the negative impacts promoted by the Fe toxicity on nutrient concentrations, growth, chlorophyll fluorescence, gas exchange and pigments due to reductions in absorption and transport of Fe, lower production of oxidant compounds and reduction in cell damages of rice plants, which can be indicated the concentration of 10 nM EBR to this crop.

MEMBROS DA BANCA:
Presidente - 1803899 - ALLAN KLYNGER DA SILVA LOBATO
Interno - 1551252 - GISELE BARATA DA SILVA
Externo ao Programa - 1740947 - DENMORA GOMES DE ARAUJO
Externo à Instituição - JOAO ROBERTO ROSA E SILVA - UFRA