Detailed Information on Publication Record
2014
Expression of TWISTED DWARF1 lacking its in-plane membrane anchor leads to increased cell elongation and hypermorphic growth
BAILLY, Auréllien, Bangjun WANG, Marta ZWIEWKA, Stephan POLLMANN, Daniel SCHENCK et. al.Basic information
Original name
Expression of TWISTED DWARF1 lacking its in-plane membrane anchor leads to increased cell elongation and hypermorphic growth
Authors
BAILLY, Auréllien (756 Switzerland, guarantor), Bangjun WANG (756 Switzerland), Marta ZWIEWKA (616 Poland, belonging to the institution), Stephan POLLMANN (276 Germany), Daniel SCHENCK (276 Germany), Hartwig LÜTHEN (276 Germany), Alexander SCHULTZ (276 Germany), Jiří FRIML (203 Czech Republic, belonging to the institution) and Markus GEISLER (756 Switzerland)
Edition
The Plant Journal, USA, Blackwell Science, 2014, 0960-7412
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
Genetics and molecular biology
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 5.972
RIV identification code
RIV/00216224:14740/14:00073518
Organization unit
Central European Institute of Technology
UT WoS
000328661300009
Keywords in English
polar auxin transport; ABCB; P-glycoprotein; TWISTED DWARF1; cell elongation
Tags
Tags
International impact, Reviewed
Změněno: 17/10/2014 12:27, Martina Prášilová
Abstract
V originále
Plant growth is achieved predominantly by cellular elongation, which is thought to be controlled on several levels by apoplastic auxin. Auxin export into the apoplast is achieved by plasma membrane efflux catalysts of the PIN-FORMED (PIN) and ATP-binding cassette protein subfamily B/phosphor-glycoprotein (ABCB/PGP) classes; the latter were shown to depend on interaction with the FKBP42, TWISTED DWARF1 (TWD1). Here by using a transgenic approach in combination with phenotypical, biochemical and cell biological analyses we demonstrate the importance of a putative C-terminal in-plane membrane anchor of TWD1 in the regulation of ABCB-mediated auxin transport. In contrast with dwarfed twd1 loss-of-function alleles, TWD1 gain-of-function lines that lack a putative in-plane membrane anchor (HA-TWD1-Ct ) show hypermorphic plant architecture, characterized by enhanced stem length and leaf surface but reduced shoot branching. Greater hypocotyl length is the result of enhanced cell elongation that correlates with reduced polar auxin transport capacity for HA-TWD1-Ct . As a consequence, HA-TWD1-Ct displays higher hypocotyl auxin accumulation, which is shown to result in elevated auxin-induced cell elongation rates. Our data highlight the importance of C-terminal membrane anchoring for TWD1 action, which is required for specific regulation of ABCB-mediated auxin transport. These data support a model in which TWD1 controls lateral ABCB1-mediated export into the apoplast, which is required for auxin-mediated cell elongation.
Links
ED1.1.00/02.0068, research and development project |
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EE2.3.20.0043, research and development project |
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EE2.3.30.0009, research and development project |
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GA13-40637S, research and development project |
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