Enzyme activities and gene expression in dry maize seeds and seeds submitted to low germination temperature
| Autor: | Heloisa Oliveira dos Santos, Danielle Rezende Vilela, Viviane Maria de Abreu, Renzo Garcia Von Pinho, Édila Vilela de Resende Von Pinho, Izabel Costa Silva Neta, Maria Laene Moreira de Carvalho |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Abiotic stress food and beverages Biology APX 01 natural sciences Esterase Superoxide dismutase 03 medical and health sciences chemistry.chemical_compound Horticulture 030104 developmental biology chemistry Germination Catalase Gene expression Botany biology.protein General Agricultural and Biological Sciences Abscisic acid 010606 plant biology & botany |
| Zdroj: | African Journal of Agricultural Research. 11:3097-3103 |
| ISSN: | 1991-637X |
| Popis: | 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. Key words: Zea mays, seed vigor, abiotic stress. |
| Databáze: | OpenAIRE |
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