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Photoinduction of seed germination in Arabidopsis thaliana is modulated by phototropins

Photoinduction of seed germination in Arabidopsis ...

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dc.contributor.author Jedynak, Paweł [SAP14013098] pl
dc.contributor.author Myśliwa-Kurdziel, Beata [SAP11015459] pl
dc.contributor.author Turek, Elżbieta pl
dc.contributor.author Malec, Przemysław [SAP11013396] pl
dc.date.accessioned 2015-06-11T10:26:10Z
dc.date.available 2015-06-11T10:26:10Z
dc.date.issued 2013 pl
dc.identifier.issn 0001-5296 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/9414
dc.language eng pl
dc.rights Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Bez utworów zależnych 3.0 Polska *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/pl/legalcode *
dc.title Photoinduction of seed germination in Arabidopsis thaliana is modulated by phototropins pl
dc.type JournalArticle pl
dc.description.physical 67-72 pl
dc.identifier.weblink http://journals.pan.pl/dlibra/publication/94765/edition/81786/content pl
dc.abstract.en Light exposure is an important environmental factor which breaks seed dormancy in many plant species. Phytochromes have been identified as playing a crucial role in perception of the light signal that releases seed germination in Arabidopsis. Phototropins (Phot1, Phot2) are blue/UV-photoreceptors in plants which mediate phototropic responses, chloroplast relocation, hypocotyl growth inhibition and stomata opening. We studied germination under different light conditions in Arabidopsis Phot1-null and Phot2-null mutants and in a double phot1phot2 mutant. Germination of single phot1 and phot2 mutants in darkness was much lower than in wildtype (WT) seeds, whereas double phot1phot2 mutant lacking both functional phototropins germinated at frequency comparable to WT seeds, irrespective of light and temperature conditions. Light treatment of imbibed seeds was essential for effective germination of phot1, irrespective of low-temperature conditioning. In contrast, cold stratification promoted dark germination of phot2 seeds after imbibition in dim light. Low germination frequency of phot1 seeds under low light intensity suggests that the presence of functional Phot1 might be crucial for effective germination at these conditions. The lower germination frequency of phot2 seeds under continuous light suggests that Phot2 might be responsible for stimulating germination of seeds exposed to direct daylight. Thus, the phototropin system may cooperate with phytochromes regulating the germination competence of seeds under different environmental conditions. pl
dc.subject.en photomorphogenesis pl
dc.subject.en Arabidopsis thaliana pl
dc.subject.en light signalling pl
dc.subject.en phototropins pl
dc.subject.en seed germination pl
dc.description.volume 55 pl
dc.description.number 1 pl
dc.identifier.doi 10.2478/abcsb-2013-0008 pl
dc.identifier.eissn 1898-0295 pl
dc.title.journal Acta Biologica Cracoviensia. Series Botanica pl
dc.language.container eng pl
dc.date.accession 2019-02-26 pl
dc.affiliation Wydział Biochemii, Biofizyki i Biotechnologii : Zakład Fizjologii i Biochemii Roślin pl
dc.subtype Article pl
dc.rights.original CC-BY-NC-ND; otwarte czasopismo; ostateczna wersja wydawcy; w momencie opublikowania; 0 pl
dc.identifier.project ROD UJ / P pl
.pointsMNiSW [2013 A]: 20


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Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Bez utworów zależnych 3.0 Polska Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Bez utworów zależnych 3.0 Polska