Universität zu Köln

Dombrowski, Nina ORCID: 0000-0003-1917-2577, Schlaeppi, Klaus ORCID: 0000-0003-3620-0875, Agler, Matthew T., Hacquard, Stephane, Kemen, Eric ORCID: 0000-0002-7924-116X, Garrido-Oter, Ruben, Wunder, Joerg, Coupland, George ORCID: 0000-0001-6988-4172 and Schulze-Lefert, Paul (2017). Root microbiota dynamics of perennial Arabis alpina are dependent on soil residence time but independent of flowering time. ISME J., 11 (1). S. 43 - 56. LONDON: NATURE PUBLISHING GROUP. ISSN 1751-7370

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Abstract

Recent field and laboratory experiments with perennial Boechera stricta and annual Arabidopsis thaliana suggest that the root microbiota influences flowering time. Here we examined in long-term time-course experiments the bacterial root microbiota of the arctic-alpine perennial Arabis alpina in natural and controlled environments by 16S rRNA gene profiling. We identified soil type and residence time of plants in soil as major determinants explaining up to 15% of root microbiota variation, whereas environmental conditions and host genotype explain maximally 11% of variation. When grown in the same soil, the root microbiota composition of perennial A. alpina is largely similar to those of its annual relatives A. thaliana and Cardamine hirsuta. Non-flowering wild-type A. alpina and flowering pep1 mutant plants assemble an essentially indistinguishable root microbiota, thereby uncoupling flowering time from plant residence time-dependent microbiota changes. This reveals the robustness of the root microbiota against the onset and perpetual flowering of A. alpina. Together with previous studies, this implies a model in which parts of the root microbiota modulate flowering time, whereas, after microbiota acquisition during vegetative growth, the established root-associated bacterial assemblage is structurally robust to perturbations caused by flowering and drastic changes in plant stature.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Dombrowski, Nina UNSPECIFIED orcid.org/0000-0003-1917-2577 UNSPECIFIED Schlaeppi, Klaus UNSPECIFIED orcid.org/0000-0003-3620-0875 UNSPECIFIED Agler, Matthew T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hacquard, Stephane UNSPECIFIED UNSPECIFIED UNSPECIFIED Kemen, Eric UNSPECIFIED orcid.org/0000-0002-7924-116X UNSPECIFIED Garrido-Oter, Ruben UNSPECIFIED UNSPECIFIED UNSPECIFIED Wunder, Joerg UNSPECIFIED UNSPECIFIED UNSPECIFIED Coupland, George UNSPECIFIED orcid.org/0000-0001-6988-4172 UNSPECIFIED Schulze-Lefert, Paul UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-246793
DOI:	10.1038/ismej.2016.109
Journal or Publication Title:	ISME J.
Volume:	11
Number:	1
Page Range:	S. 43 - 56
Date:	2017
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	1751-7370
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ARABIDOPSIS-THALIANA; RHIZOSPHERE MICROBIOME; BACTERIAL COMMUNITIES; ARCTIC PLANTS; DIVERSITY; MICROORGANISMS; SELECTION; ECOLOGY; GROWTH; WILD Multiple languages Ecology; Microbiology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/24679