Treatment conditions and biochemical processes influencing seed priming effectiveness
By G. D. Girolamo, Lorenzo Barbanti. 2012
120 citations recorded by the source corpus.
A review of the scientific literature indicates osmotic priming (osmopriming) as the principal method of seed priming and polyethylene glycol (PEG) as the principal osmotic agent. An analysis of the available data across experiments carried out with different species under varying conditions showed an average 11% increase in percent germination and 36% shorter mean germination time (MGT) in primed vs. unprimed seeds. Moreover, in primed seeds MGT was less dependent on temperature, which is consistent with the effects expected from the treatment. Priming effects are mainly influenced by osmotic potential, temperature and time; major biochemical processes (repair of damaged DNA and RNA, preparation for cell division and increased antioxidant activity) are involved in treatment effects to an extent which is not fully ascertained in literature. A reduction of seed storage life is the major disadvantage of priming and the principal constraint to its diffusion, since dehydration to the initial moisture (drying-back) is needed to allow seed storage. Seed behaviour during drying-back, the role of the raffinose family oligosaccharides in cell membrane integrity and the expression of antioxidant enzymes in germinating seeds need to be further elucidated in a sufficient number of species, to promote a more reliable use of this technique.
Subfields: Molecular Biology, Physiology, Plant Science
View Paper: https://www.semanticscholar.org/paper/85841c68a33754fa8fd2640d2e38a884d13b7848
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Citations in the corpus
- Seed priming to alleviate salinity stress in germinating seeds. (2016, unknown): “…the activity of many enzymes involved in metabolism of carbohydrates (α and β amylases), proteins (proteases) and lipids mobilization (isocitrate lyase) that are implicated in the stored reserves mobilization (Gamboa-deBuen et al., 2006; Varier et al., 2010; Di Girolamo and Barbanti, 2012).”
- Hydro-priming Effects on Seed Germination and Field Performance of Faba Bean in Spring Sowing (2019, unknown): “, equilibration conditions for safe storage [30].”
- Seed Priming: New Comprehensive Approaches for an Old Empirical Technique (2016, background): “Some other data reported modifications in aspartate, leucine, threonate, glutamate, fumarate, or pinitol content in primed seeds from different species [1, 2, 35, 104, 152].”
- Seed priming: state of the art and new perspectives (2015, background): “…carrot (Daucus carota L.), leek and onion (Genus Allium) (Dearman et al. 1987), celery (Apium graveolens L.), lettuce (Lactuca sativa L.), endive (Cichorium endivia L.), pepper (Genus Capsicum) and tomato (Solanum lycopersicum L.) (Parera and Cantliffe 1994; Di Girolamo and Barbanti 2012).”