Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 508090
Title PPP1, a plant-specific regulator of transcription controls Arabidopsis development and PIN expression
Author(s) Benjamins, René; Barbez, Elke; Ortbauer, Martina; Terpstra, Inez; Lucyshyn, Doris; Moulinier-Anzola, Jeanette; Khan, Muhammad Asaf; Leitner, Johannes; Malenica, Nenad; Butt, Haroon; Korbei, Barbara; Scheres, Ben; Kleine-Vehn, Jürgen; Luschnig, Christian
Source Scientific Reports 6 (2016). - ISSN 2045-2322
DOI http://dx.doi.org/10.1038/srep32196
Department(s) Plant Developmental Biology
EPS
Publication type Refereed Article in a scientific journal
Publication year 2016
Abstract

Directional transport of auxin is essential for plant development, with PIN auxin transport proteins representing an integral part of the machinery that controls hormone distribution. However, unlike the rapidly emerging framework of molecular determinants regulating PIN protein abundance and subcellular localization, insights into mechanisms controlling PIN transcription are still limited. Here we describe PIN2 PROMOTER BINDING PROTEIN 1 (PPP1), an evolutionary conserved plant-specific DNA binding protein that acts on transcription of PIN genes. Consistent with PPP1 DNA-binding activity, PPP1 reporter proteins are nuclear localized and analysis of PPP1 null alleles and knockdown lines indicated a function as a positive regulator of PIN expression. Furthermore, we show that ppp1 pleiotropic mutant phenotypes are partially reverted by PIN overexpression, and results are presented that underline a role of PPP1-PIN promoter interaction in PIN expression control. Collectively, our findings identify an elementary, thus far unknown, plant-specific DNA-binding protein required for post-embryonic plant development, in general, and correct expression of PIN genes, in particular.

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