ArticleAnnals of botany2019
The role of the testa during the establishment of physical dormancy in the pea seed.
Article in Annals of botany, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 48 citations in OpenAlex.
- Extending shelf life: cold plasma as a tool to preserve long-term germination potential of pea seeds.Scientific reports · 2025Article
- Genetic and transcriptomic analysis of lentil seed imbibition and dormancy in relation to its domestication.The plant genome · 2025Article
- Physical Seed Dormancy in Legumes: Molecular Advances and Perspectives.Plants (Basel, Switzerland) · 2024Review
- Physical seed dormancy in pea is genetically separable from seed coat thickness and roughness.Frontiers in plant science · 2024Article
- Article
- Priming ofPhotosynthetica · 2023Article
- The Seed Coat's Impact on Crop Performance in Pea (Plants (Basel, Switzerland) · 2022Review
- Analysis ofFrontiers in plant science · 2022Article
- Functional packaging of seeds.The New phytologist · 2021Review
- Anatomy and Histochemistry of Seed Coat Development of Wild (International journal of molecular sciences · 2021Article
- The pleurogram, an under-investigated functional trait in seeds.Annals of botany · 2021Article
- Non-destructive identification of single hard seed via multispectral imaging analysis in six legume species.Plant methods · 2020Article
- Variation in wild pea (PeerJ · 2019Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundA water-impermeable testa acts as a barrier to a seed's imbibition, thereby imposing dormancy. The physical and functional properties of the macrosclereids are thought to be critical determinants of dormancy; however, the mechanisms underlying the maintenance of and release from dormancy in pea are not well understood.
methodsSeeds of six pea accessions of contrasting dormancy type were tested for their ability to imbibe and the permeability of their testa was evaluated. Release from dormancy was monitored following temperature oscillation, lipid removal and drying. Histochemical and microscopic approaches were used to characterize the structure of the testa. KEY
resultsThe strophiole was identified as representing the major site for the entry of water into non-dormant seeds, while water entry into dormant seeds was distributed rather than localized. The major barrier for water uptake in dormant seeds was the upper section of the macrosclereids, referred to as the 'light line'. Dormancy could be released by thermocycling, dehydration or chloroform treatment. Assays based on either periodic acid or ruthenium red were used to visualize penetration through the testa. Lipids were detected within a subcuticular waxy layer in both dormant and non-dormant seeds. The waxy layer and the light line both formed at the same time as the establishment of secondary cell walls at the tip of the macrosclereids.
conclusionsThe light line was identified as the major barrier to water penetration in dormant seeds. Its outer border abuts a waxy subcuticular layer, which is consistent with the suggestion that the light line represents the interface between two distinct environments - the waxy subcuticular layer and the cellulose-rich secondary cell wall. The mechanistic basis of dormancy break includes changes in the testa's lipid layer, along with the mechanical disruption induced by oscillation in temperature and by a decreased moisture content of the embryo.
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