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Therefore, in this study, we investigate how SLs impact on root exudation and P uptake, in qualitative and quantitative terms over time, in wild\u2010type and SL\u2010depleted tomato plants grown with or without P. Under P shortage, SL\u2010depleted plants were unable to efficiently activate most mechanisms associated with the P starvation response (PSR), except for the up\u2010regulation of P transporters and increased activity of P\u2010solubilizing enzymes. The reduced SL biosynthesis had negative effects also under normal P provision, because plants over\u2010activated high\u2010affinity transporters and enzymatic activities (phytase, acidic phosphatase) to sustain elevated P uptake, at great carbon and nitrogen costs. A shift in the onset of PSR was also highlighted in these plants. We conclude that SLs are master kinetic regulators of the PSR in tomato and that their defective synthesis might lead both to suboptimal nutritional outcomes under P depletion and an unbalanced control of P uptake when P is available.<\/jats:p>","DOI":"10.1111\/pce.14169","type":"journal-article","created":{"date-parts":[[2021,8,20]],"date-time":"2021-08-20T03:39:02Z","timestamp":1629430742000},"page":"3628-3642","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":42,"title":["Strigolactones affect phosphorus acquisition strategies in tomato plants"],"prefix":"10.1111","volume":"44","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7403-3786","authenticated-orcid":false,"given":"Veronica","family":"Santoro","sequence":"first","affiliation":[{"name":"DISAFA Department University of Turin  Grugliasco Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michela","family":"Schiavon","sequence":"additional","affiliation":[{"name":"DISAFA Department University of Turin  Grugliasco Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ivan","family":"Visentin","sequence":"additional","affiliation":[{"name":"DISAFA Department University of Turin  Grugliasco Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christian","family":"Const\u00e1n\u2010Aguilar","sequence":"additional","affiliation":[{"name":"DISAFA Department University of Turin  Grugliasco Italy"},{"name":"Department of Plant Physiology, Faculty of Sciences University of Granada  Granada Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9892-9325","authenticated-orcid":false,"given":"Francesca","family":"Cardinale","sequence":"additional","affiliation":[{"name":"DISAFA Department University of Turin  Grugliasco Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luisella","family":"Celi","sequence":"additional","affiliation":[{"name":"DISAFA Department University of Turin  Grugliasco Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,8,25]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/nature03608"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-81-322-1542-4_7"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1104\/pp.125.2.728"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev.pp.24.060173.001301"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-3040.2005.01422.x"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1093\/mp\/sss130"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1360-1385(01)02222-1"},{"key":"e_1_2_9_9_1","first-page":"113","volume-title":"Organic phosphorus in the environment","author":"Celi L.","year":"2004"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2229-14-61"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.154.3753.1189"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.3390\/ijms14047681"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1023\/A:1022323215010"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1093\/jxb\/erz349"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.3390\/agronomy10050617"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1111\/pce.13760"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1080\/01904169209364489"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1038\/nature07271"},{"issue":"8","key":"e_1_2_9_19_1","first-page":"801","article-title":"Phytase and acid phosphatase activities in extracts from roots of temperate pasture grass and legume seedlings","volume":"26","author":"Hayes J. 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