Recovery of maize (Zea mays L.) inbreds and hybrids from chilling stress of various duration: photosynthesis and antioxidant enzymes
Language English Country Germany Media print-electronic
Document type Comparative Study, Journal Article, Research Support, Non-U.S. Gov't
PubMed
16884820
DOI
10.1016/j.jplph.2006.04.016
PII: S0176-1617(06)00161-1
Knihovny.cz E-resources
- MeSH
- Antioxidants metabolism MeSH
- Ascorbate Peroxidases MeSH
- Chlorophyll metabolism MeSH
- Photosynthesis * MeSH
- Photosystem I Protein Complex metabolism MeSH
- Photosystem II Protein Complex metabolism MeSH
- Genotype MeSH
- Glutathione Reductase metabolism MeSH
- Hybridization, Genetic MeSH
- Inbreeding MeSH
- Catalase metabolism MeSH
- Zea mays enzymology genetics physiology MeSH
- Cold Temperature * MeSH
- Peroxidases metabolism MeSH
- Plant Proteins metabolism MeSH
- Superoxide Dismutase metabolism MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Comparative Study MeSH
- Names of Substances
- Antioxidants MeSH
- Ascorbate Peroxidases MeSH
- Chlorophyll MeSH
- Photosystem I Protein Complex MeSH
- Photosystem II Protein Complex MeSH
- Glutathione Reductase MeSH
- Catalase MeSH
- Peroxidases MeSH
- Plant Proteins MeSH
- Superoxide Dismutase MeSH
The differences between two maize (Zea mays L.) inbred lines and their F1 hybrids in their response to chilling periods of various duration (1, 2, 3 or 4 weeks) and subsequent return to optimum temperatures were analysed by the measurement of the photosystem (PS) 1 and 2 activity, the photosynthetic pigments' content and the activity of antioxidant enzymes. The PS2 activity and the chlorophyll content decreased in plants subjected to 3 or 4 weeks of chilling, but not in those subjected to 1 or 2 weeks of chilling. This decrease was more pronounced in inbreds compared to their hybrids. The activity of superoxide dismutase did not much change with the increasing length of chilling period in the inbreds but decreased in the hybrids, the glutathione reductase activity increased in both types of genotypes but more in the inbred lines, while for ascorbate peroxidase and catalase the changes in parents-hybrids relationship did not show any specific trend. The PS1 activity and the carotenoids' content was not much affected.
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