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| DOI: | 10.1111/nph.16948 |
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| Web URL(s): | https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.16948
Last checked: 02/19/2021
Access conditions: Item is within a limited-access website
https://nph.onlinelibrary.wiley.com/doi/epdf/10.1111/nph.16948
Last checked: 02/19/2021
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| Publication Type:
| Refereed |
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| Author(s): | Holloway, Thomas;
Steinbrecher, Tina;
PĆ©rez, Marta;
Seville, Anne;
Stock, David;
Nakabayashi, Kazumi;
Leubner-Metzger, Gerhard |
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| Author Affiliation: | Holloway: Department of Biological Sciences, Royal Holloway University of London, Egham, UK and Syngenta, Jealotts Hill International Research Centre, War?eld, Bracknell, UK; Steinbrecher, PĆ©rez, and Nakabayashi: Department of Biological Sciences, Royal Holloway University of London, Egham, UK; Seville and Stock: Syngenta, Jealotts Hill International Research Centre, War?eld, Bracknell, UK; Leubner-Metzger: Department of Biological Sciences, Royal Holloway University of London, Egham, UK and Laboratory of Growth Regulators, PalackĆ½ University and Institute of Experimental Botany, Czech Academy of Sciences, Olomouc, Czech Republic |
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| Title: | Coleorhiza-enforced seed dormancy: a novel mechanism to control germination in grasses |
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| Source: | New Phytologist. Vol. 229, No. 4, February 2021, p. 2179-2191. |
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| Publishing Information: | Oxford, England, United Kingdom: Blackwell Publishing, for the New Phytologist Trust |
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| # of Pages: | 13 |
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| Related Web URL: | d
Access conditions: Item is within a limited-access website
Notes: Abstract only |
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| Keywords: | Author-Supplied Keywords: Avena fatua (common wild oat); Cell wall remodelling enzymes; Grass seed dormancy; Plant tissue interactions; Seed tissue biomechanics; Weed management
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| Abstract/Contents: | "How the biophysical properties of overlaying tissues control growth, such as the embryonic root (radicle) during seed germination, is a fundamental question. In eudicot seeds the endosperm surrounding the radicle confers coat dormancy and controls germination responses through modulation of its cell wall mechanical properties. Far less is known for grass caryopses that differ in tissue morphology. Here we report that the coleorhiza, a sheath-like organ that surrounds the radicle in grass embryos, performs the same role in the grass weed Avena fatua (common wild oat). We combined innovative biomechanical techniques, tissue ablation, microscopy, tissue-specific gene and enzyme activity expression with the analysis of hormones and oligosaccharides. The combined experimental work demonstrates that in grass caryopses the coleorhiza indeed controls germination for which we provide direct biomechanical evidence. We show that the coleorhiza becomes reinforced during dormancy maintenance and weakened during germination. Xyloglucan endotransglycosylases/hydrolases may have a role in coleorhiza reinforcement through cell wall remodelling to confer coat dormancy. The control of germination by coleorhiza-enforced dormancy in grasses is an example of the convergent evolution of mechanical restraint by overlaying tissues." |
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| Language: | English |
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| References: | 65 |
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| Note: | Summary appears as abstract
Pictures, color
Figures
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Holloway, T., T. Steinbrecher, M. PĆ©rez, A. Seville, D. Stock, K. Nakabayashi, et al. 2021. Coleorhiza-enforced seed dormancy: a novel mechanism to control germination in grasses. New Phytol. 229(4):p. 2179-2191. |
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| DOI: 10.1111/nph.16948 |
| Web URL(s):
https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.16948
Last checked: 02/19/2021
Access conditions: Item is within a limited-access website
https://nph.onlinelibrary.wiley.com/doi/epdf/10.1111/nph.16948
Last checked: 02/19/2021
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2219226 |
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