Coleorhiza-enforced seed dormancy: a novel mechanism to control germination in grasses
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F21%3A73604610" target="_blank" >RIV/61989592:15310/21:73604610 - isvavai.cz</a>
Alternative codes found
RIV/61389030:_____/20:00540629
Result on the web
<a href="https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.16948" target="_blank" >https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.16948</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/nph.16948" target="_blank" >10.1111/nph.16948</a>
Alternative languages
Result language
angličtina
Original language name
Coleorhiza-enforced seed dormancy: a novel mechanism to control germination in grasses
Original language description
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 weedAvena 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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10611 - Plant sciences, botany
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
NEW PHYTOLOGIST
ISSN
0028-646X
e-ISSN
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Volume of the periodical
229
Issue of the periodical within the volume
4
Country of publishing house
GB - UNITED KINGDOM
Number of pages
13
Pages from-to
2179-2191
UT code for WoS article
000578272600001
EID of the result in the Scopus database
2-s2.0-85092603272