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Cross-talk between mitochondrial function, growth, and stress signalling pathways in plants
Elina Welchen1, María Victoria Canal1, Diana E Gras1
1Instituto de Agrobiotecnología del Litoral (CONICET-UNL), Cátedra de Biología Celular y Molecular, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, 3000 Santa Fe, Argentina.
Journal of Experimental Botany
|December 28, 2020
Summary
Plant mitochondria send signals affecting growth and stress responses. These signals involve metabolic, redox, and ion changes, influencing hormonal pathways and remote plant tissues.
Area of Science:
- Plant Biology
- Cellular Metabolism
- Mitochondrial Physiology
Background:
- Mitochondria are central to plant cell metabolism and interconnected with other organelles.
- Mitochondrial dysfunction impacts cellular processes, suggesting communication pathways.
- Signals from mitochondria influence plant growth and stress adaptation.
Purpose of the Study:
- To review the role of plant mitochondria in signaling pathways.
- To explore how mitochondria influence plant growth and stress responses.
- To discuss the cross-talk between mitochondria and energy signaling pathways.
Main Methods:
- Literature review of existing research on plant mitochondrial signaling.
- Analysis of evidence for metabolic and redox signaling from mitochondria.
- Examination of mitochondrial involvement in hormonal and energy signaling pathways.
Main Results:
- Mitochondria communicate with the cell via metabolic, redox, ion, and protein signals.
- Mitochondrial activity modulates signaling pathways controlling plant growth and stress responses.
- Mitochondria interact with key energy signaling pathways like TOR and SNRK1.
Conclusions:
- Plant mitochondria play a crucial role in integrating cellular signals to regulate growth and stress.
- Mitochondrial signaling influences hormonal pathways, enabling remote control over plant development and responses.
- Understanding mitochondrial cross-talk is vital for comprehending plant adaptation and resilience.
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