A novel role for histone methyltransferase KYP/SUVH4 in the control of Arabidopsis primary seed dormancy
© 2011 The Authors. New Phytologist © 2011 New Phytologist Trust.
| Veröffentlicht in: | The New phytologist. - 1990. - 193(2012), 3 vom: 03. Feb., Seite 605-616 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2012
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| Zugriff auf das übergeordnete Werk: | The New phytologist |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Arabidopsis Proteins Gibberellins RNA, Messenger Triazoles paclobutrazol 6PLV42R3ZA Abscisic Acid 72S9A8J5GW mehr... |
| Zusammenfassung: | © 2011 The Authors. New Phytologist © 2011 New Phytologist Trust. • Seed dormancy controls germination and plays a crucial role in the life cycle of plants. Chromatin modifications are involved in the regulation of seed dormancy; however, little is known about the underlying mechanism. • KYP/SUVH4 is required for histone H3 lysine 9 dimethylation. Mutations in this gene cause increased seed dormancy. KYP/SUVH4-overexpressing Arabidopsis plants show decreased dormancy. KYP/SUVH4 expression is regulated by abscisic acid (ABA) and gibberellins (GA). The sensitivity of seed germination to ABA and paclobutrazol (PAC) is enhanced slightly in kryptonite-2 (kyp-2) and suvh4-2/suvh5 mutants, but weakened in KYP/SUVH4-overexpressing plants. • In the kyp-2 mutant, several dormancy-related genes, including DOG1 and ABI3, show increased expression levels, in agreement with a negative role for KYP/SUVH4 in gene transcription. • Genetic analysis showed that DOG1 and HUB1 are epistatic to KYP/SUVH4, suggesting that these genes regulate seed dormancy in the same genetic pathway |
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| Beschreibung: | Date Completed 03.05.2012 Date Revised 10.03.2022 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1469-8137 |
| DOI: | 10.1111/j.1469-8137.2011.03969.x |