{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"institution":[{"name":"Authorea, Inc."}],"indexed":{"date-parts":[[2023,2,28]],"date-time":"2023-02-28T05:36:44Z","timestamp":1677562604986},"posted":{"date-parts":[[2023,2,27]]},"group-title":"Preprints","reference-count":0,"publisher":"Authorea, Inc.","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"accepted":{"date-parts":[[2023,2,27]]},"abstract":"<jats:p id=\"p1\">Plant monocultures growing for extended periods face severe losses of\nproductivity. This phenomenon, known as \u2018yield decline\u2019, is often caused\nby the accumulation of above- and belowground plant antagonists. The\neffectiveness of plant defences against antagonists might help\nexplaining differences in yield decline among species. Using a\ntrait-based approach, we studied the role of 20 physical and chemical\ndefence traits of leaves and fine roots on yield decline of 18-year old\nmonocultures of 27 grassland species. We hypothesized that yield decline\nis lower for species with high defences, that root defences are better\npredictors of yield decline than leaf defences, and that in roots,\nphysical defences better predict yield decline than chemical defences,\nwhile the reverse is true for leaves. We additionally hypothesized that\nspecies increasing the expression of defence traits after long-term\nmonoculture growth would suffer less yield decline. We summarized leaf\nand fine root defence traits using principal component analysis and\nanalysed the relationship between defence traits mean as a measure of\ndefence strenght and defence traits temporal changes of the most\ninformative components and monoculture yield decline. The only\nsignificant predictors of yield decline were the mean and temporal\nchanges of the component related to specific root length and root\ndiameter (e.g. the so called collaboration gradient of the root\neconomics space). The principal component analysis of the remaining\ntraits showed strong trade-offs between defences suggesting that\ndifferent plant species deploy a variety of strategies to defend\nthemselves. This diversity of strategies could preclude the detection of\na generalized correlation between the strength and temporal changes of\ndefence gradients and yield decline. Our results show that yield decline\nis strongly linked to belowground processes particularly to root traits.\nFurther studies are needed to understand the mechanism driving the\neffect of the collaboration gradient on yield decline.<\/jats:p>","DOI":"10.22541\/au.167751569.90939710\/v1","type":"posted-content","created":{"date-parts":[[2023,2,27]],"date-time":"2023-02-27T16:34:56Z","timestamp":1677515696000},"source":"Crossref","is-referenced-by-count":0,"title":["Leaf and root chemical and physical defence traits mediate monoculture yield decline in a grassland experiment"],"prefix":"10.22541","author":[{"ORCID":"http:\/\/orcid.org\/0000-0002-2604-8665","authenticated-orcid":true,"given":"Leonardo","family":"Bassi","sequence":"first","affiliation":[{"name":"Leipzig University"}]},{"given":"Justus","family":"Hennecke","sequence":"additional","affiliation":[{"name":"Leipzig University"}]},{"given":"Cynthia","family":"Albracht","sequence":"additional","affiliation":[{"name":"Helmholtz Centre for Environmental Research UFZ Department of Soil Ecology"}]},{"given":"Maximilian","family":"Broecher","sequence":"additional","affiliation":[{"name":"Friedrich Schiller University Jena Institute of Ecology"}]},{"given":"Marcel","family":"Solbach","sequence":"additional","affiliation":[{"name":"University of Cologne Faculty of Mathematics and Natural Sciences"}]},{"given":"J\u00f6rg","family":"Schaller","sequence":"additional","affiliation":[{"name":"Leibniz Centre for Agricultural Landscape Research (ZALF) Library"}]},{"given":"Van Cong","family":"Doan","sequence":"additional","affiliation":[{"name":"German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig"}]},{"given":"Heiko","family":"Wagner","sequence":"additional","affiliation":[{"name":"Leipzig University"}]},{"given":"Nico","family":"Eisenhauer","sequence":"additional","affiliation":[{"name":"German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig"}]},{"ORCID":"http:\/\/orcid.org\/0000-0002-3221-4017","authenticated-orcid":true,"given":"Anne","family":"Ebeling","sequence":"additional","affiliation":[{"name":"Friedrich Schiller University Jena Institute of Ecology"}]},{"given":"Sebastian","family":"Meyer","sequence":"additional","affiliation":[{"name":"Technical University of Munich School of Life Sciences Weihenstephan"}]},{"given":"Nicole van","family":"Dam","sequence":"additional","affiliation":[{"name":"German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig"}]},{"given":"Alexandra","family":"Weigelt","sequence":"additional","affiliation":[{"name":"Leipzig University"}]}],"member":"9829","container-title":[],"original-title":[],"deposited":{"date-parts":[[2023,2,27]],"date-time":"2023-02-27T16:34:56Z","timestamp":1677515696000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.authorea.com\/users\/590400\/articles\/626772-leaf-and-root-chemical-and-physical-defence-traits-mediate-monoculture-yield-decline-in-a-grassland-experiment?commit=56693a84d253fec0f93b40cb856a69cfe952dcd1"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,2,27]]},"references-count":0,"URL":"http:\/\/dx.doi.org\/10.22541\/au.167751569.90939710\/v1","relation":{},"published":{"date-parts":[[2023,2,27]]},"subtype":"preprint"}}