Počet záznamů: 1
A seed coat bedding assay shows that RGL2-dependent release of abscisic acid by the endosperm controls embryo growth in Arabidopsis dormant seeds
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SYSNO ASEP 0359294 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název A seed coat bedding assay shows that RGL2-dependent release of abscisic acid by the endosperm controls embryo growth in Arabidopsis dormant seeds Tvůrce(i) Lee, K. P. (CH)
Piskurewicz, U. (CH)
Turečková, Veronika (UEB-Q) RID, ORCID
Strnad, Miroslav (UEB-Q) RID, ORCID
Lopez-Molina, L. (CH)Celkový počet autorů 5 Zdroj.dok. Proceedings of the National Academy of Sciences of the United States of America. - : National Academy of Sciences - ISSN 0027-8424
Roč. 107, č. 44 (2010), s. 19108-19113Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova gibberellins ; seed dormancy ; DELLA Vědní obor RIV EF - Botanika CEP GA301/08/1649 GA ČR - Grantová agentura ČR CEZ AV0Z50380511 - UEB-Q (2005-2011) UT WOS 000283749000067 DOI 10.1073/pnas.1012896107 Anotace Seed dormancy is an ecologically important adaptive trait in plants whereby germination is repressed even under favorable germination conditions such as imbibition with water. In Arabidopsis and most plant species, dormancy absolutely requires an unidentified seed coat germination-repressive activity and constitutively higher abscisic acid (ABA) levels upon seed imbibition. The mechanisms underlying these processes and their possible relationship are incompletely understood. We developed a "seed coat bedding" assay monitoring the growth of dissected embryos cultured on a layer of seed coats, allowing combinatorial experiments using dormant, nondormant, and various genetically modified seed coat and embryonic materials. This assay, combined with direct ABA measurements, revealed that, upon imbibition, dormant coats, unlike nondormant coats, actively produce and release ABA to repress embryo germination, whatever the embryo origin. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2011
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