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240706s2024 xx |||||o 00| ||eng c |
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|a 10.1016/j.jplph.2024.154301
|2 doi
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|a pubmed24n1512.xml
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|a (DE-627)NLM374565953
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|a (NLM)38968782
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|e rakwb
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|a eng
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|a Toora, Parneet K
|e verfasserin
|4 aut
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|a Modulation in the ratio of abscisic acid to gibberellin level determines genetic variation of seed dormancy in barley (Hordeum vulgare L.)
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 23.08.2024
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|a Date Revised 23.08.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2024 The Authors. Published by Elsevier GmbH.. All rights reserved.
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|a Abscisic acid (ABA) and gibberellin (GA) are major regulators of seed dormancy, an adaptive trait closely associated with preharvest sprouting. This study examined transcriptional regulation of ABA and GA metabolism genes and modulation of ABA and GA levels in seeds of barley genotypes exhibiting a range of dormancy phenotype. We observed a very strong negative correlation between genetic variation in seed germination and embryonic ABA level (r = 0.85), which is regulated by transcriptional modulation of HvNCED1 and/or HvCYP707A genes. A strong positive correlation was evident between variation in seed germination and GA level (r = 0.64), mediated via transcriptional regulation of GA biosynthesis genes, HvGA20ox2 and/or HvGA3oxs, and GA catabolism genes, HvGA2ox3 and/or HvGA3ox6. Modulation of the ABA and GA levels in the genotypes led to the prevalence of ABA to GA level ratio that exhibited a very strong negative correlation (r = 0.84) with seed germination, highlighting the importance of a shift in ABA/GA ratio in determining genetic variation of dormancy in barley seeds. Our results overall show that transcriptional regulation of specific ABA and GA metabolism genes underlies genetic variation in ABA/GA ratio and seed dormancy, reflecting the potential use of these genes as molecular tools for enhancing preharvest sprouting resistance in barley
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|a Journal Article
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|a Abscisic acid
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|a Barley
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|a Dormancy gene expression
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|a Genetic variation
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|a Germination
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|a Gibberellin
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| 650 |
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|a Gibberellins
|2 NLM
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| 650 |
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|a Abscisic Acid
|2 NLM
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| 650 |
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|a 72S9A8J5GW
|2 NLM
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| 650 |
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|a Plant Growth Regulators
|2 NLM
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| 650 |
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|a Plant Proteins
|2 NLM
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| 700 |
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|a Tuan, Pham Anh
|e verfasserin
|4 aut
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| 700 |
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|a Nguyen, Tran-Nguyen
|e verfasserin
|4 aut
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| 700 |
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|a Badea, Ana
|e verfasserin
|4 aut
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| 700 |
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|a Ayele, Belay T
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 301(2024) vom: 15. Aug., Seite 154301
|w (DE-627)NLM098174622
|x 1618-1328
|7 nnns
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| 773 |
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|g volume:301
|g year:2024
|g day:15
|g month:08
|g pages:154301
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|u http://dx.doi.org/10.1016/j.jplph.2024.154301
|3 Volltext
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