Seed Germination and Longevity Dynamics

Seed germination and longevity dynamics encompass the physiological, biochemical and genetic processes that govern the transition of a quiescent seed to an actively growing seedling, as well as the maintenance of viability during storage. Germination involves water uptake, metabolic reactivation and cell expansion, often regulated by hormonal balances between abscisic acid and gibberellins. Longevity refers to the ability of seeds to remain viable over time under given storage conditions and is influenced by factors such as moisture content, temperature, internal antioxidant capacity and genetic determinants of dormancy and repair. A key challenge is to balance dormancy mechanisms that prevent premature germination with repair pathways that mitigate damage from reactive oxygen species, lipid peroxidation and macromolecular degradation. Advances in transcriptomics, proteomics and high-throughput phenotyping are elucidating networks of heat shock proteins, late embryogenesis abundant proteins and antioxidant enzymes that underpin longevity. These insights have global significance for crop security, restoration ecology and biodiversity conservation, informing seed banking protocols, breeding strategies for enhanced storage performance and targeted treatments such as priming or growth regulator application to improve germination from aged material.

Research from Nature Portfolio

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Seed Germination and Longevity Dynamics publication trend

The graph below shows the total number of articles in seed germination and longevity dynamics across all publications each year (not limited to Nature Index journals).

Technical terms

Dormancy: A physiological state in which viable seeds fail to germinate under otherwise favourable conditions, often imposed by hormonal or structural constraints.

Viability: The capacity of a seed to germinate and develop into a normal seedling under standard conditions.

Reactive oxygen species (ROS): Chemically reactive molecules derived from oxygen, including superoxide and hydrogen peroxide, which can cause oxidative damage or act as signalling molecules.

After-ripening: A period of dry storage during which dormant orthodox seeds undergo internal changes that relieve dormancy and enhance subsequent germination.

References

1. Full-Length Transcriptome Sequencing Reveals the Molecular Mechanism of Metasequoia glyptostroboides Seed Responding to Aging. Antioxidants (2023).
2. Reactive Oxygen Species as Potential Drivers of the Seed Aging Process. Plants (2019).
3. Seed storage: maintaining seed viability and vigor for restoration use. Restoration Ecology (2020).