Metabolism of Reactive Oxygen Species in Cytoplasmic Male Sterility of Rice by Marking Upmost Pulvinus Interval

• Published in: Applied biochemistry and biotechnology Vol. 175; no. 3; pp. 1263 - 1269
• Main Authors: Li, Jianxin, Dai, Ximei, Li, Linyu, Jiao, Zhen, Huang, Qunce
• Format: Journal Article
• Language: English
• Published: Boston Springer-Verlag 01.02.2015; Springer US; Springer Nature B.V
• Subjects: antioxidants; apoptosis; Biochemistry; Biotechnology; catalase; Catalase - metabolism; Chemistry; Chemistry and Materials Science; Cytoplasm; Cytoplasm - metabolism; cytoplasmic male sterility; Developmental stages; enzyme activity; Enzymes; Free Radical Scavengers - metabolism; Hybridization, Genetic; inflorescences; Leaves; Male sterility; malondialdehyde; Malondialdehyde - metabolism; meiosis; Metabolism; Oryza - enzymology; Oryza - metabolism; Oryza - physiology; peroxidase; Peroxidase - metabolism; Plant biology; Plant Infertility - physiology; Plant Leaves - enzymology; pulvinus; Pulvinus - physiology; reactive oxygen species; Reactive Oxygen Species - metabolism; Rice; Seeds - growth & development; Self-Fertilization; superoxide dismutase; Superoxide Dismutase - metabolism; Antioxidant enzyme; Malondialdehyde; Rice; Cytoplasmic male sterility
• ISSN: 0273-2289; 1559-0291
• DOI: 10.1007/s12010-014-1346-8

Reactive oxygen species (ROS) and malondialdehyde (MDA) in plant cell are thought to be important inducible factors of cell apoptosis if excessively accumulated in cells. To elucidate the metabolic mechanism of MDA production and scavenging in the cytoplasmic male-sterile (CMS) rice, CMS line and maintainer were employed for studying the relationship at different developmental stages by marking upmost pulvinus interval method of experiment. The results showed that the panicles and leaves of the CMS line had a noticeable higher MDA content than those of maintainer line at all five stages that had been investigated (p < 0.05). MDA content in the CMS line in the flag leaves of auricle in the distance 0 mm stage (the meiosis stage) was the highest of the five stages. The increase of MDA contents in sterile panicles and leaves had inducible effects on the enzymic activity of superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD). However, at the abortion peak stage, MDA was excessively accumulated and antioxidant enzymic activity reduced significantly, resulting in the generation and scavenging of MDA out of balance.