Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/30235
Título : Enzyme activities and gene expression in dry maize seeds and seeds submitted to low germination temperature
Autor: Silva Neta, Izabel Costa
Von Pinho, Édila Vilela de Resende
Abreu, Viviane Maria de
Santos, Heloisa Oliveira dos
Vilela, Danielle Rezende
Von Pinho, Renzo Garcia
Carvalho, Maria Laene Moreira de
Palavras-chave: Zea mays
Seed vigor
Abiotic stress
Publicador: Academic Journals
Data da publicação: 2016
Referência: SILVA NETA, I. C. et al. Enzyme activities and gene expression in dry maize seeds and seeds submitted to low germination temperature. African Journal of Agricultural Research, [S.l.], v. 11, n. 33, p. 3097-3103, 2016.
Abstract: The study was conducted on dry maize seed and seed subjected to sub optimal germination temperature. Four lines of maize seeds were used, two were classified as susceptible to low temperature (44 and 54) and two tolerant to low temperature (64 and 91°C). Water content and germination tests were performed at different temperatures (10 and 25°C) to evaluate the physical and physiological quality of maize seeds. For molecular study, activity of heat-resistant proteins, esterase, superoxide dismutase, catalase and α-amylase enzymes were assessed. Study of AOX1, ZmMPK5, SOD, APX, SAD, ENR and LEA genes with real time polymerase chain reaction (PCR) were carried out. AOX, SAD and LEA genes that are related as tolerant to abiotic stress showed higher expression in line 64, which was classified as tolerant to low germination temperature. The ZmMPK5 gene is associated with increased production of abscisic acid and expressed more in line 54, which was considered as susceptible to low germination temperature.
URI: http://repositorio.ufla.br/jspui/handle/1/30235
Idioma: en_US
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