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Role of PIN-mediated auxin efflux in apical hook development of Arabidopsis thaliana

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ŽÁDNÍKOVÁ Petra BENKOVA Eva PETRÁŠEK Jan MARHAVÝ Peter MARHAVY Peter VERED Raz SCHWARZEROVÁ Kateřina VANDENBUSSCHE Filip DING Zhaojun MORITA Miyo T. TASAKA Masao HEJÁTKO Jan DOMINIQUE Van Der Straeten FRIML Jiří BENKOVÁ Eva

Rok publikování 2010
Druh Článek v odborném periodiku
Časopis / Zdroj Development
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www http://apps.isiknowledge.com/full_record.do?product=UA&search_mode=GeneralSearch&qid=506&SID=N1GpfJdJ64p57Eeheen&page=1&doc=2&colname=WOS
Obor Genetika a molekulární biologie
Klíčová slova PIN3 Apical hook Auxin Arabidopsis
Popis The apical hook is a simple structure that develops to protect the meristem during emergence and that opens upon exposure to light. Differential growth at the apical hook proceeds in three sequential steps that are regulated by multiple hormones, principally auxin and ethylene. We show that the progress of the apical hook depends on the dynamic, asymmetric distribution of auxin, which is regulated by auxin efflux carriers of the PIN family. Several PIN proteins exhibited specific and temporal expression patterns, and their subcellular localization suggested auxin fluxes during hook development. Genetic manipulation of individual PIN activities interfered with different stages of hook development, implying that specific combinations of PIN genes are required for progress of the apical hook through the development. Furthermore, ethylene might modulate the formation and the maintenance phase. This ethylene effect is in part mediated by regulation of PIN-dependent auxin efflux and auxin signaling.
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