ArticlePlant physiology2009
Anatomical and transcriptomic studies of the coleorhiza reveal the importance of this tissue in regulating dormancy in barley.
Article in Plant physiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.
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71 citing papers in PubMed.
- Translating research on seed dormancy and germination from Arabidopsis to temperate cereals to control pre-harvest sprouting.Frontiers in plant science · 2026Review
- Editorial: Molecular basis of seed germination and dormancy, volume II.Frontiers in plant science · 2026Article
- Induction of α-amylase and endosperm-imposed seed dormancy: two pioneering papers in gibberellin research.Planta · 2025Review
- After-Ripening Is Associated with Changes in the Sensitivity ofPlants (Basel, Switzerland) · 2025Article
- Sleeping but not defenceless: seed dormancy and protection.Journal of experimental botany · 2024Review
- KARPlanta · 2024Article
- Identification of Reference Genes for Precise Expression Analysis during Germination inInternational journal of molecular sciences · 2023Article
- Spatially resolved transcriptomic analysis of the germinating barley grain.Nucleic acids research · 2023Article
- Article
- Auxin contributes to jasmonate-mediated regulation of abscisic acid signaling during seed germination in Arabidopsis.The Plant cell · 2023Article
- Temporal and spatial transcriptional regulation of phytohormone metabolism during seed development in barley (Frontiers in plant science · 2023Article
- Seed dormancy loss from dry after-ripening is associated with increasing gibberellin hormone levels inFrontiers in plant science · 2023Article
- The absorption of water from humid air by grass embryos during germination.Plant physiology · 2022Article
- Root pruning improves maize water-use efficiency by root water absorption.Frontiers in plant science · 2022Article
- Identification and expression analysis of the lipid phosphate phosphatases gene family reveal their involvement in abiotic stress response in kiwifruit.Frontiers in plant science · 2022Article
- A preliminary mapping of QTLFrontiers in plant science · 2022Article
- Late-maturity α-amylase (LMA): exploring the underlying mechanisms and end-use quality effects in wheat.Planta · 2021Review
- Genome-wide analysis and expression patterns of lipid phospholipid phospholipase gene family in Brassica napus L.BMC genomics · 2021Article
- Seed Dormancy and Preharvest Sprouting in Quinoa (Plants (Basel, Switzerland) · 2021Review
- Article
11 more citing papers are in PubMed but not listed here.
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Authors and funding
5 authors.
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No grant is acknowledged in the PubMed record.
Abstract
The decay of seed dormancy during after-ripening is not well understood, but elucidation of the mechanisms involved may be important for developing strategies for modifying dormancy in crop species and, for example, addressing the problem of preharvest sprouting in cereals. We have studied the germination characteristics of barley (Hordeum vulgare 'Betzes') embryos, including a description of anatomical changes in the coleorhiza and the enclosed seminal roots. The changes that occur correlate with abscisic acid (ABA) contents of embryo tissues. To understand the molecular mechanisms involved in dormancy loss, we compared the transcriptome of dormant and after-ripened barley embryos using a tissue-specific microarray approach. Our results indicate that in the coleorhiza, ABA catabolism is promoted and ABA sensitivity is reduced and that this is associated with differential regulation by after-ripening of ABA 8'-hydroxylase and of the LIPID PHOSPHATE PHOSPHATASE gene family and ABI3-INTERACTING PROTEIN2, respectively. We also identified other processes, including jasmonate responses, cell wall modification, nitrate and nitrite reduction, mRNA stability, and blue light sensitivity, that were affected by after-ripening in the coleorhiza that may be downstream of ABA signaling. Based on these results, we propose that the coleorhiza plays a major role in causing dormancy by acting as a barrier to root emergence and that after-ripening potentiates molecular changes related to ABA metabolism and sensitivity that ultimately lead to degradation of the coleorhiza, root emergence, and germination.
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