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A role for TOR signaling at every stage of plant life
Teagen D Quilichini1, Peng Gao1, Prashant K Pandey1
1National Research Council of Canada, Saskatoon, SK, Canada.
Abstract:
From scientific advances in medical research to the plethora of anti-aging products available, our obsession with slowing the aging process and increasing life span is indisputable. A large research effort has been levied towards this perpetual search for the fountain of youth, yet the molecular mechanisms governing an organism's life span and the causes of aging are only beginning to emerge in animals and remain largely unanswered in plants. As one central pathway in eukaryotes controlling cell growth, development, and metabolism, the target of rapamycin (TOR) plays an evolutionarily conserved role in aging and the determination of life span. The modulation of TOR pathway components in a wide range of species, including the model plant Arabidopsis thaliana, has effects on life span. However, the mechanisms enabling some of the longest living species to endure, including trees that can live for millennia, have not been defined. Here, we introduce key TOR research from plant systems and discuss its implications in the plant life cycle and the broader field of life span research. TOR pathway functions in plant life cycle progression and life span determination are discussed, noting key differences from yeast and animal systems and the importance of 'omics' research for the continued progression of TOR signaling research.
Insights
The target of rapamycin (TOR) pathway is crucial for aging and lifespan in eukaryotes. Research into TOR signaling in plants is vital for understanding plant life cycles and longevity.
Area of Science:
- Plant biology
- Molecular biology
- Aging research
Background:
- Aging and lifespan determination mechanisms are largely unknown in plants.
- The target of rapamycin (TOR) pathway is a conserved regulator of cell growth, metabolism, and aging across eukaryotes.
- Understanding plant longevity, especially in long-lived species like trees, is an ongoing scientific challenge.
Purpose of the Study:
- To review current research on the TOR pathway in plant systems.
- To discuss the role of TOR signaling in plant life cycle progression and lifespan determination.
- To highlight the importance of TOR research for understanding plant longevity and aging.
Main Methods:
- Review of existing scientific literature on TOR pathway research in plants.
- Comparative analysis of TOR signaling mechanisms across different species (plants, yeast, animals).
- Emphasis on the role of 'omics' technologies in advancing TOR signaling research.
Main Results:
- The TOR pathway plays a conserved role in aging and lifespan across eukaryotes, including plants.
- Modulation of TOR pathway components affects lifespan in model plants like Arabidopsis thaliana.
- Key differences exist between TOR pathway functions in plants compared to yeast and animal systems.
Conclusions:
- The TOR pathway is integral to plant life cycle progression and lifespan determination.
- Further research into plant TOR signaling is essential for understanding plant longevity and aging.
- 'Omics' approaches are critical for future advancements in plant TOR signaling research.
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