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Analysis of dynamic gene expression responses to altered gravity in the wildtype and auxin efflux carrier mutants of the model plant Arabidopsis thaliana

Palme, Klaus and Ditengou, Franck and Metzger, Patrick and Lasok, Hania and Aubry, Dorothee and Li, Xugang and Haser, Thomas and Wang, Hui and Schüler, Oliver and Krause, Lars and Görög, Mark and Brungs, Sonja and Hemmersbach, Ruth and Börries, Melanie and Busch, Hauke (2017) Analysis of dynamic gene expression responses to altered gravity in the wildtype and auxin efflux carrier mutants of the model plant Arabidopsis thaliana. 25th European Low Gravity Research Association Biennial Symposium 2017, Antibes, Juan-les-Pins, France, Antibes, Juan-les-Pins, France.

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Official URL: http://www.elgra.org/?page_id=464

Abstract

Plant roots are among most intensively studied biological systems in gravity research. Altered gravity induces asymmetric cell growth leading to root bending. Differential distribution of the phytohormone auxin underlies root's responses to gravity being coordinated by auxin efflux transporters from the PIN family. The objective of this study was to compare early transcriptomic changes in roots of Arabidopsis thaliana using experiments on board of parabolic flights, suborbital and orbital flights, and ground-based facilities for simulated microgravity conditions to correlate these changes to auxin distribution. By comparing immediate and initial responses of the gene expression to the different gravitational forces identified primary gravity regulated genes and resolved time-effects in gene expression leading to an understanding of the underlying physiological responses and adaptive processes. High-resolution imaging in combination with computational approaches further resolved phenotypic changes initiated by altered gravity at the cellular level. Our study provides important insights towards understanding signal transduction processes in altered gravity conditions by combining experimental platforms with the analysis of different genetic mutants in the model Arabidopsis.

Item URL in elib:https://elib.dlr.de/117940/
Document Type:Conference or Workshop Item (Speech)
Title:Analysis of dynamic gene expression responses to altered gravity in the wildtype and auxin efflux carrier mutants of the model plant Arabidopsis thaliana
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Palme, KlausAlbert-Ludwigs University of Freiburg, Institute of Biology II/Botany, Faculty of Biology, Freiburg, Germanyhttps://orcid.org/0000-0002-2728-3835
Ditengou, FranckAlbert-Ludwigs University of Freiburg, Institute of Biology II/Botany, Faculty of Biology, Freiburg, GermanyUNSPECIFIED
Metzger, PatrickAlbert-Ludwigs-University of Freiburg, Institute of Molecular Medicine and Cell Research, Freiburg, GermanyUNSPECIFIED
Lasok, HaniaAlbert-Ludwigs-University of Freiburg, Institute of Biology II / Molecular Plant Physiology, Freiburg, GermanyUNSPECIFIED
Aubry, DorotheeAlbert-Ludwigs-University of Freiburg, Institute of Biology II / Molecular Plant Physiology, Freiburg, GermanyUNSPECIFIED
Li, XugangAlbert-Ludwigs-University of Freiburg, Institute of Biology II / Molecular Plant Physiology, Freiburg, GermanyUNSPECIFIED
Haser, ThomasAlbert-Ludwigs-University of Freiburg, Institute of Biology II / Molecular Plant Physiology, Freiburg, GermanyUNSPECIFIED
Wang, HuiAlbert-Ludwigs-University of Freiburg, Institute of Biology II / Molecular Plant Physiology, Freiburg, GermanyUNSPECIFIED
Schüler, OliverGerman Aerospace Center (DLR), Institute of Aerospace Medicine, Gravitational Biology, Cologne, GermanyUNSPECIFIED
Krause, LarsGerman Aerospace Centre (DLR), Institute of Aerospace Medicine, Gravitational Biology, Cologne, GermanyUNSPECIFIED
Görög, MarkGerman Aerospace Centre (DLR), Institute of Aerospace Medicine, Gravitational Biology, Cologne, GermanyUNSPECIFIED
Brungs, Sonjagerman aerospace centre (dlr), institute of aerospace medicine, gravitational biology, cologne, germanyhttps://orcid.org/0000-0002-1277-9942
Hemmersbach, Ruthgerman aerospace centre (dlr), institute of aerospace medicine, gravitational biology, cologne, germanyhttps://orcid.org/0000-0001-5308-6715
Börries, MelanieAlbert-Ludwigs-University of Freiburg, Institute of Molecular Medicine and Cell Research, Freiburg, GermanyUNSPECIFIED
Busch, HaukeAlbert-Ludwigs-University of Freiburg, Institute of Biology II / Molecular Plant Physiology, Freiburg, GermanyUNSPECIFIED
Date:2 September 2017
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Arabidopsis thaliana, Altered gravity, Gene expression, Auxin efflux carrier mutants
Event Title:25th European Low Gravity Research Association Biennial Symposium 2017
Event Location:Antibes, Juan-les-Pins, France
Event Type:international Conference
Event Dates:Antibes, Juan-les-Pins, France
Organizer:European Low Gravity Research Association (ELGRA)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Biowissenschaftliche Nutzerunterstützung, R - Vorhaben Biowissenschaftliche Exp.-vorbereitung
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Gravitational Biology
Deposited By: Duwe, Helmut
Deposited On:06 Feb 2018 08:59
Last Modified:06 Feb 2018 08:59

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