caa a22 4500 60621903X CHVBK 20210128101116.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s11104-015-2419-3 doi (NATIONALLICENCE)springer-10.1007/s11104-015-2419-3 Should I stay or should I go? Roots segregate in response to competition intensity [Elektronische Daten] [Christoph Schmid, Sibylle Bauer, Maik Bartelheimer] Background and Aims: Root segregation has been observed in a variety of species. Though it is usually attributed to a plant's attempt to avoid below ground competition, a direct correlation of root distribution with the intensity of competition has never been shown. Methods: The test species Hieracium pilosella L. was exposed to a gradient of competitive pressure using the closely related species Arabidopsis petraea (L.) V.I.DOROF., Arabidopsis thaliana (L.) Heynh ., Capsella rubella Reut . and Cardamine hirsuta L. as neighbouring plants. Horizontal root distribution was quantified using a soil monolith method. Results: The neighbour species could be ranked according to their competitive effect on the test species, identifying two weak (A. thaliana and A. petraea) and two strong competitors (C. hirsuta and C. rubella). The degree of root segregation correlated negatively with the competitive effect caused by the various neighbour species. Conclusions: We conclude that root segregation is indeed a response to competitive pressure. Further factors such as root symbiotic relationships or root exuded allelochemicals are supposedly involved in the outcome of root interactions. We propose the use of screening experiments on root responses to various neighbours in order to quantify each factor's relative influence on rooting patterns. Springer International Publishing Switzerland, 2015 Root segregation nationallicence Root distribution nationallicence Below ground competition nationallicence Hieracium pilosella nationallicence Monolith method nationallicence Information integration nationallicence Schmid Christoph Institute of Plant Sciences, Faculty of Biology and Preclinical Medicine, University of Regensburg, Regensburg, Germany aut Bauer Sibylle Institute of Plant Sciences, Faculty of Biology and Preclinical Medicine, University of Regensburg, Regensburg, Germany aut Bartelheimer Maik Institute of Plant Sciences, Faculty of Biology and Preclinical Medicine, University of Regensburg, Regensburg, Germany aut Plant and Soil Springer International Publishing 391/1-2(2015-06-01), 283-291 0032-079X 391:1-2<283 2015 391 11104 https://doi.org/10.1007/s11104-015-2419-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2419-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Schmid Christoph Institute of Plant Sciences, Faculty of Biology and Preclinical Medicine, University of Regensburg, Regensburg, Germany aut NATIONALLICENCE 700 1- Bauer Sibylle Institute of Plant Sciences, Faculty of Biology and Preclinical Medicine, University of Regensburg, Regensburg, Germany aut NATIONALLICENCE 700 1- Bartelheimer Maik Institute of Plant Sciences, Faculty of Biology and Preclinical Medicine, University of Regensburg, Regensburg, Germany aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 391/1-2(2015-06-01), 283-291 0032-079X 391:1-2<283 2015 391 11104