{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,26]],"date-time":"2026-04-26T04:41:46Z","timestamp":1777178506490,"version":"3.51.4"},"reference-count":31,"publisher":"CSIRO Publishing","issue":"4","license":[{"start":{"date-parts":[[2025,5,27]],"date-time":"2025-05-27T00:00:00Z","timestamp":1748304000000},"content-version":"vor","delay-in-days":6202,"URL":"https:\/\/doi.org\/10.1071\/journalslicense"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2008,6,3]]},"abstract":"<jats:p>This study examined the effects of localised phosphorus (P) supply on cluster-root formation and citrate exudation in white lupin (Lupinus albus L. cv. Kiev Mutant). White lupin plants were grown in nutrient solutions with a range of P supplies in a split-root system with one root half deprived of P and the other root supplied with 0, 2, 5, 8, 10 or 75 \u00b5m P. Plants were also grown in soil with or without organic matter added to the top layer. The proportion of cluster roots as a percentage of the total root biomass decreased similarly on both root halves with increasing P supply in the hydroponic experiments. More than 18% of the P taken up by the P-supplied root halves was incorporated into the P-deprived halves. Irrespective of the P supply or organic matter addition in the experiments, the proportion of cluster roots and the rate of citrate exudation decreased sharply with increasing P concentration in the shoots up to a critical level of 2\u20133 mg P g\u20131 dry weight. In contrast, the rate of proton release was higher in P-deprived root halves than in P-supplied ones. The formation of cluster roots is regulated by shoot P concentration with a critical level of 2\u20133 mg g\u20131. Citrate exudation is predominantly governed by shoot P status, whereas proton release strongly responds to local P supply.<\/jats:p>","DOI":"10.1071\/fp07222","type":"journal-article","created":{"date-parts":[[2008,6,3]],"date-time":"2008-06-03T06:33:00Z","timestamp":1212474780000},"page":"328-336","source":"Crossref","is-referenced-by-count":51,"title":["Is there a critical level of shoot phosphorus concentration for cluster-root formation in Lupinus albus?"],"prefix":"10.1071","volume":"35","author":[{"given":"Haigang","family":"Li","sequence":"first","affiliation":[{"name":"ADepartment of Plant Nutrition, Key Laboratory of Plant\u2013Soil Interaction (Ministry of Education), China Agricultural University, Beijing 100094, China."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jianbo","family":"Shen","sequence":"additional","affiliation":[{"name":"ADepartment of Plant Nutrition, Key Laboratory of Plant\u2013Soil Interaction (Ministry of Education), China Agricultural University, Beijing 100094, China."},{"name":"DCorresponding author. Email: jbshen@cau.edu.cn"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fusuo","family":"Zhang","sequence":"additional","affiliation":[{"name":"ADepartment of Plant Nutrition, Key Laboratory of Plant\u2013Soil Interaction (Ministry of Education), China Agricultural University, Beijing 100094, China."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Caixian","family":"Tang","sequence":"additional","affiliation":[{"name":"BDepartment of Agricultural Sciences, La Trobe University, Bundoora, Vic. 3086, Australia."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hans","family":"Lambers","sequence":"additional","affiliation":[{"name":"CSchool of Plant Biology, Faculty of Natural and Agricultural Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"67","published-online":{"date-parts":[[2008,6,3]]},"reference":[{"key":"2025102222132957200_R1"},{"key":"2025102222132957200_R2"},{"key":"2025102222132957200_R3"},{"key":"2025102222132957200_R4"},{"key":"2025102222132957200_R5"},{"key":"2025102222132957200_R6"},{"key":"2025102222132957200_R7"},{"key":"2025102222132957200_R8"},{"key":"2025102222132957200_R9"},{"key":"2025102222132957200_R10"},{"key":"2025102222132957200_R11"},{"key":"2025102222132957200_R12"},{"key":"2025102222132957200_R13"},{"key":"2025102222132957200_R14"},{"key":"2025102222132957200_R15"},{"key":"2025102222132957200_R16"},{"key":"2025102222132957200_R17"},{"key":"2025102222132957200_R18"},{"key":"2025102222132957200_R19"},{"key":"2025102222132957200_R20"},{"key":"2025102222132957200_R21"},{"key":"2025102222132957200_R22"},{"key":"2025102222132957200_R23"},{"key":"2025102222132957200_R24"},{"key":"2025102222132957200_R25"},{"key":"2025102222132957200_R26"},{"key":"2025102222132957200_R27"},{"key":"2025102222132957200_R28"},{"key":"2025102222132957200_R29"},{"key":"2025102222132957200_R30"},{"key":"2025102222132957200_R31"}],"container-title":["Functional Plant Biology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/connectsci.au\/fp\/article-pdf\/35\/4\/328\/331922\/fp07222.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/connectsci.au\/fp\/article-pdf\/35\/4\/328\/331922\/fp07222.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,23]],"date-time":"2025-10-23T02:13:34Z","timestamp":1761185614000},"score":1,"resource":{"primary":{"URL":"https:\/\/connectsci.au\/fp\/article\/35\/4\/328\/53729\/Is-there-a-critical-level-of-shoot-phosphorus"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,6,3]]},"references-count":31,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2008,6,3]]}},"URL":"https:\/\/doi.org\/10.1071\/fp07222","relation":{},"ISSN":["1445-4408","1445-4416"],"issn-type":[{"value":"1445-4408","type":"print"},{"value":"1445-4416","type":"electronic"}],"subject":[],"published":{"date-parts":[[2008,6,3]]}}}