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Clonal integration and heavy-metal stress : responses of plants with contrasting evolutionary backgrounds

Titelangaben

Gruntman, Michal ; Anders, Clarissa ; Mohiley, Anubhav ; Laaser, Tanja ; Clemens, Stephan ; Höreth, Stephan ; Tielbörger, Katja:
Clonal integration and heavy-metal stress : responses of plants with contrasting evolutionary backgrounds.
In: Evolutionary Ecology. Bd. 31 (2017) Heft 3 . - S. 305-316.
ISSN 1573-8477
DOI: https://doi.org/10.1007/s10682-016-9840-9

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Projektfinanzierung: Deutsche Forschungsgemeinschaft

Abstract

Physiological integration between ramets can ameliorate the growth and survival of clonal plants in spatially-heterogeneous environments, as ramets from favourable patches can provide support to those found in stressful patches. However, the advantage conferred by clonal integration might also depend on the evolutionary history of plants with regards to the presented stress. Here, we compared the benefit of clonal integration in response to the distribution of a heavy metal as a stress factor, and asked if this benefit would differ between ecotypes that have either undergone selection to tolerate heavy metals or not. In a greenhouse experiment, we grew pairs of connected and severed ramets of the metal hyperaccumulator Arabidopsis halleri, which originated from populations of either metalliferous or non-metalliferous soils. The ramets were grown in paired pots, which were contaminated with cadmium (Cd) either heterogeneously (100 or 0 ppm Cd per pot) or homogenously (50 ppm Cd per each pot). A. halleri ecotypes that originated from non-metalliferous soils performed better when ramets were connected and the distribution of Cd was heterogeneous. However, clonal integration had no effect on the performance of genotypes from metalliferous soils, regardless of the distribution of Cd. These results support the hypothesis that clonal integration is beneficial in stressful environments as long as the stress is patchily distributed, and particularly for plants that did not undergo selection to withstand it.

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Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Zusätzliche Informationen: WOS:000402050400001
BAYCEER137420
Keywords: Tolerance; Arabidopsis-halleri; Nonmetallicolous populations; Serpentine soils; Arabidopsis halleri; Cadmium; Clonal integration; Division-of-labor; Fragaria-chiloensis; Heavy metal tolerance; Herb glechoma-hederacea; Local adaptation; Metal hyperaccumulation; Physiological integration; Ramets
Institutionen der Universität: Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Lehrstuhl Pflanzenphysiologie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Lehrstuhl Pflanzenphysiologie > Lehrstuhl Pflanzenphysiologie - Univ.-Prof. Dr. Stephan Clemens
Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Titel an der UBT entstanden: Nein
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik
500 Naturwissenschaften und Mathematik > 570 Biowissenschaften; Biologie
500 Naturwissenschaften und Mathematik > 580 Pflanzen (Botanik)
Eingestellt am: 11 Jan 2018 07:40
Letzte Änderung: 16 Jan 2018 10:02
URI: https://eref.uni-bayreuth.de/id/eprint/41640