TY  - JOUR
A1  - Hilson, Pierre
A1  - Allemeersch, Joke
A1  - Altmann, Thomas
A1  - Aubourg, Sebastien
A1  - Avon, Alexandra
A1  - Beynon, Jim
A1  - Bhalerao, Rishikesh P.
A1  - Bitton, Frederique
A1  - Caboche, Michel
A1  - Cannoot, Bernard
A1  - Chardakov, Vasil
A1  - Cognet-Holliger, Cecile
A1  - Colot, Vincent
A1  - Crowe, Mark
A1  - Darimont, Caroline
A1  - Durinck, Steffen
A1  - Eickhoff, Holger
A1  - deLongevialle, Andeol Falcon
A1  - Farmer, Edward E.
A1  - Grant, Murray
A1  - Kuiper, Martin T. R.
A1  - Lehrach, Hans
A1  - Leon, Celine
A1  - Leyva, Antonio
A1  - Lundeberg, Joakim
A1  - Lurin, Claire
A1  - Moreau, Yves
T1  - Versatile gene-specific sequence tags for arabidopsis functional genomics : transcript profiling and reserve genetics applications
N2  - Microarray transcript profiling and RNA interference are two new technologies crucial for large-scale gene function studies in multicellular eukaryotes. Both rely on sequence-specific hybridization between complementary nucleic acid strands, inciting us to create a collection of gene-specific sequence tags (GSTs) representing at least 21,500 Arabidopsis genes and which are compatible with both approaches. The GSTs were carefully selected to ensure that each of them shared no significant similarity with any other region in the Arabidopsis genome. They were synthesized by PCR amplification from genomic DNA. Spotted microarrays fabricated from the GSTs show good dynamic range, specificity, and sensitivity in transcript profiling experiments. The GSTs have also been transferred to bacterial plasmid vectors via recombinational cloning protocols. These cloned GSTs constitute the ideal starting point for a variety of functional approaches, including reverse genetics. We have subcloned GSTs on a large scale into vectors designed for gene silencing in plant cells. We show that in planta expression of GST hairpin RNA results in the expected phenotypes in silenced Arabidopsis lines. These versatile GST resources provide novel and powerful tools for functional genomics
Y1  - 2004
ER  - 
TY  - JOUR
A1  - Robert, Helene S.
A1  - Grunewald, Wim
A1  - Sauer, Michael
A1  - Cannoot, Bernard
A1  - Soriano, Mercedes
A1  - Swarup, Ranjan
A1  - Weijers, Dolf
A1  - Bennett, Malcolm
A1  - Boutilier, Kim
A1  - Friml, Jiri
T1  - Plant embryogenesis requires AUX/LAX-mediated auxin influx
JF  - Development : Company of Biologists
N2  - The plant hormone auxin and its directional transport are known to play a crucial role in defining the embryonic axis and subsequent development of the body plan. Although the role of PIN auxin efflux transporters has been clearly assigned during embryonic shoot and root specification, the role of the auxin influx carriers AUX1 and LIKE-AUX1 (LAX) proteins is not well established. Here, we used chemical and genetic tools on Brassica napus microspore-derived embryos and Arabidopsis thaliana zygotic embryos, and demonstrate that AUX1, LAX1 and LAX2 are required for both shoot and root pole formation, in concert with PIN efflux carriers. Furthermore, we uncovered a positive-feedback loop between MONOPTEROS-(ARF5)dependent auxin signalling and auxin transport. This MONOPTEROS dependent transcriptional regulation of auxin influx (AUX1, LAX1 and LAX2) and auxin efflux (PIN1 and PIN4) carriers by MONOPTEROS helps to maintain proper auxin transport to the root tip. These results indicate that auxin-dependent cell specification during embryo development requires balanced auxin transport involving both influx and efflux mechanisms, and that this transport is maintained by a positive transcriptional feedback on auxin signalling.
KW  - Arabidopsis thaliana embryogenesis
KW  - Auxin transport
KW  - AUX1
KW  - LIKE-AUX1 (LAX)
KW  - MONOPTEROS (ARF5)
KW  - PIN
KW  - Brassica napus
KW  - Microspore
Y1  - 2015
U6  - https://doi.org/10.1242/dev.115832
SN  - 0950-1991
SN  - 1477-9129
VL  - 142
IS  - 4
SP  - 702
EP  - 711
PB  - Company of Biologists Limited
CY  - Cambridge
ER  -