Polyamines as redox homeostasis regulators during salt stress in plants
| Autor: | Atreyee Sengupta, Bhaskar Gupta, Elizabeth K. Brauer, Jayita Saha, Kamala Gupta, Sorina C. Popescu |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
lcsh:GE1-350
chemistry.chemical_classification Reactive oxygen species Cell signaling Programmed cell death redox homeostasis ROS Context (language use) Metabolism Biology Cell biology chemistry.chemical_compound Biochemistry chemistry Environmental Science polyamine signaling Plant abiotic stress Polyamine lcsh:Environmental sciences Ion transporter Function (biology) salinity stress General Environmental Science |
| Zdroj: | Frontiers in Environmental Science, Vol 3 (2015) |
| ISSN: | 2296-665X |
| DOI: | 10.3389/fenvs.2015.00021 |
| Popis: | The balance between accumulation of stress-induced polyamines and reactive oxygen species (ROS) is arguably a critical factor in plant tolerance to salt stress. Polyamines are compounds, which accumulate in plants under salt stress and help maintain cellular ROS homeostasis. In this review we first outline the role of polyamines in mediating salt stress responses through their modulation of redox homeostasis. The two proposed roles of polyamines in regulating ROS – as antioxidative molecules and source of ROS synthesis – are discussed and exemplified with recent studies. Second, the proposed function of polyamines as modulators of ion transport is discussed in the context of plant salt stress. Finally, we highlight the apparent connection between polyamine accumulation and programmed cell death induction during stress. Thus polyamines have a complex functional role in regulating cellular signaling and metabolism during stress. By focusing future efforts on how polyamine accumulation and turnover is regulated, research in this area may provide novel targets for developing stress tolerance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|