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But do closely related species with and without such structures really differ in root exudation, P mobilization, or ecological niche? We investigated this by comparing 23 European <jats:italic>Carex<\/jats:italic> species with and without \u2018dauciform roots\u2019 (DRs).<\/jats:p><\/jats:list-item>\n\n<jats:list-item><jats:p>Plants grown in pots with sand were screened for <jats:styled-content style=\"fixed-case\">DR<\/jats:styled-content> formation, phosphatase activities, carboxylate exudation, and utilization of various organic and inorganic P compounds. Ecological niches were compared using ecological indicator values and nutrient concentrations of plant shoots in natural habitats.<\/jats:p><\/jats:list-item>\n\n<jats:list-item><jats:p>Species of subgenus <jats:italic>Carex<\/jats:italic> formed <jats:styled-content style=\"fixed-case\">DRs<\/jats:styled-content>, while species of subgenus <jats:italic>Vignea<\/jats:italic> did not. Species with <jats:styled-content style=\"fixed-case\">DRs<\/jats:styled-content> had higher root diesterase activity than species without <jats:styled-content style=\"fixed-case\">DRs<\/jats:styled-content>, exuded more citrate but less oxalate and less total carboxylates, and allocated less biomass to roots. Species with and without <jats:styled-content style=\"fixed-case\">DRs<\/jats:styled-content> showed similar growth responses to different forms of P and different amounts of P supplied; their natural habitats do not differ in soil fertility or degree of P limitation.<\/jats:p><\/jats:list-item>\n\n<jats:list-item><jats:p>Despite some differences in physiological function, <jats:styled-content style=\"fixed-case\">DRs<\/jats:styled-content> did not influence the P acquisition and nutritional niche of European <jats:italic>Carex<\/jats:italic> species, suggesting that species with and without DRs do not exhibit distinct P\u2010acquisition strategies.<\/jats:p><\/jats:list-item>\n<\/jats:list>\n<\/jats:p>","DOI":"10.1111\/nph.14674","type":"journal-article","created":{"date-parts":[[2017,7,3]],"date-time":"2017-07-03T08:46:39Z","timestamp":1499071599000},"page":"1438-1450","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":44,"title":["How functional is a trait? Phosphorus mobilization through root exudates differs little between <i>Carex<\/i> species with and without specialized dauciform roots"],"prefix":"10.1111","volume":"215","author":[{"given":"Sabine","family":"G\u00fcsewell","sequence":"first","affiliation":[{"name":"Institute of Integrative Biology ETH Zurich Universit\u00e4tstrasse 16 8092 Z\u00fcrich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin H.","family":"Schroth","sequence":"additional","affiliation":[{"name":"Institute of Biogeochemistry and Pollutant Dynamics ETH Zurich Universit\u00e4tstrasse 16 8092 Z\u00fcrich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2017,7,3]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00442-014-3033-4"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0065-2504(08)60016-1"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1104\/pp.111.173724"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11104-015-2630-2"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.0600863103"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-8137.1973.tb02022.x"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11104-015-2547-9"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11104-007-9427-x"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1023\/A:1009728007279"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11104-010-0495-y"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1522-2624(200004)163:2<207::AID-JPLN207>3.0.CO;2-P"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-3040.1999.00441.x"},{"key":"e_1_2_7_14_1","doi-asserted-by":"publisher","DOI":"10.1111\/boj.12298"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-8137.2005.01320.x"},{"key":"e_1_2_7_16_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.0269-8463.2005.00967.x"},{"key":"e_1_2_7_17_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11258-004-0010-8"},{"key":"e_1_2_7_18_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11104-016-3142-4"},{"key":"e_1_2_7_19_1","doi-asserted-by":"publisher","DOI":"10.1078\/1433-8319-0000022"},{"key":"e_1_2_7_20_1","doi-asserted-by":"publisher","DOI":"10.1111\/1365-2745.12196"},{"key":"e_1_2_7_21_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00606-004-0128-0"},{"key":"e_1_2_7_22_1","doi-asserted-by":"publisher","DOI":"10.1023\/A:1013351617532"},{"key":"e_1_2_7_23_1","doi-asserted-by":"publisher","DOI":"10.1104\/pp.111.175331"},{"key":"e_1_2_7_24_1","doi-asserted-by":"publisher","DOI":"10.3389\/fpls.2016.01042"},{"key":"e_1_2_7_25_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11104-014-2027-7"},{"key":"e_1_2_7_26_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11104-009-9989-x"},{"key":"e_1_2_7_27_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11104\u2010017\u20103292\u2010z"},{"key":"e_1_2_7_28_1","unstructured":"KuznetsovaA BrockhoffPB ChristensenRHB.2016.lmerTest: tests in linear mixed effects models. 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