2013
Overexpression of the Auxin Binding PROTEIN1 Modulates PIN-Dependent Auxin Transport in Tobacco Cells
COVANOVA, Milada, Michael SAUER, Jan RYCHTAR, Jiří FRIML, Jan PETRASEK et. al.Základní údaje
Originální název
Overexpression of the Auxin Binding PROTEIN1 Modulates PIN-Dependent Auxin Transport in Tobacco Cells
Autoři
COVANOVA, Milada (203 Česká republika), Michael SAUER (56 Belgie), Jan RYCHTAR (840 Spojené státy), Jiří FRIML (203 Česká republika, garant, domácí), Jan PETRASEK (203 Česká republika) a Eva ZAŽÍMALOVÁ (203 Česká republika)
Vydání
Plos One, SAN FRANCISCO, PUBLIC LIBRARY SCIENCE, 2013, 1932-6203
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
Genetika a molekulární biologie
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 3.534
Kód RIV
RIV/00216224:14740/13:00072089
Organizační jednotka
Středoevropský technologický institut
UT WoS
000325211000181
Klíčová slova anglicky
ZEA-MAYS-L; PLANT HORMONE AUXIN; MEMBRANE H+-ATPASE; PLASMA-MEMBRANE; COLEOPTILE MEMBRANES; MOLECULAR-CLONING; POLAR TRANSPORT; ARABIDOPSIS; EFFLUX; DIVISION
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 13. 2. 2014 21:45, Olga Křížová
Anotace
V originále
Background: Auxin binding protein 1 (ABP1) is a putative auxin receptor and its function is indispensable for plant growth and development. ABP1 has been shown to be involved in auxin-dependent regulation of cell division and expansion, in plasma-membrane-related processes such as changes in transmembrane potential, and in the regulation of clathrin-dependent endocytosis. However, the ABP1-regulated downstream pathway remains elusive. Methodology/Principal Findings: Using auxin transport assays and quantitative analysis of cellular morphology we show that ABP1 regulates auxin efflux from tobacco BY-2 cells. The overexpression of ABP1can counterbalance increased auxin efflux and auxin starvation phenotypes caused by the overexpression of PIN auxin efflux carrier. Relevant mechanism involves the ABP1-controlled vesicle trafficking processes, including positive regulation of endocytosis of PIN auxin efflux carriers, as indicated by fluorescence recovery after photobleaching (FRAP) and pharmacological manipulations. Conclusions/Significance: The findings indicate the involvement of ABP1 in control of rate of auxin transport across plasma membrane emphasizing the role of ABP1 in regulation of PIN activity at the plasma membrane, and highlighting the relevance of ABP1 for the formation of developmentally important, PIN-dependent auxin gradients.