Carboxylate composition of root exudates does not relate consistently to a crop species' ability to use phosphorus from aluminium, iron or calcium phosphate sources
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作者:
Pearse, Stuart J.
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机构:Univ Western Australia, Sch Plant Biol, Nedlands, WA 6009, Australia
Pearse, Stuart J.
Veneklaas, Erik J.
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机构:Univ Western Australia, Sch Plant Biol, Nedlands, WA 6009, Australia
Veneklaas, Erik J.
Cawthray, Greg
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机构:Univ Western Australia, Sch Plant Biol, Nedlands, WA 6009, Australia
Cawthray, Greg
Bolland, Mike D. A.
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机构:Univ Western Australia, Sch Plant Biol, Nedlands, WA 6009, Australia
Bolland, Mike D. A.
Lambers, Hans
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机构:Univ Western Australia, Sch Plant Biol, Nedlands, WA 6009, Australia
Lambers, Hans
机构:
[1] Univ Western Australia, Sch Plant Biol, Nedlands, WA 6009, Australia
[2] Dept Agr & Food Western Australia, Bunbury, WA 6231, Australia
The relationship between carboxylate release from roots and the ability of the species to utilize phosphorus from sparingly soluble forms was studied by comparing Triticum aestivum, Brassica napus, Cicer arietinum, Pisum sativum, Lupinus albus, Lupinus angustifolius and Lupinus cosentinii. Plants were grown in sand and supplied with 40 mg P kg(-1) in the sparingly soluble forms AIPO(4), FePO4 or Ca5O(H)(PO4)(3), or as soluble KH2PO4; control plants received no P. The ability to utilize sparingly soluble forms of P differed between forms of P supplied and species. Pisum sativum and C. arietinum did not access AIPO(4) or FePO4 despite releasing carboxylates into the rhizosphere. Species accessed different forms of sparingly soluble P, but no species was superior in accessing all forms. We conclude that a single trait cannot explain access to different forms of sparingly soluble P, and hypothesize that in addition to carboxylates, rhizosphere pH and root morphology are key factors.
机构:
Univ Western Australia, Sch Agr & Environm M090, Perth, WA 6009, Australia
Univ Western Australia, Inst Agr, Perth, WA 6009, AustraliaUniv Western Australia, Sch Agr & Environm M090, Perth, WA 6009, Australia
Kidd, Daniel R.
Ryan, Megan H.
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Univ Western Australia, Sch Agr & Environm M090, Perth, WA 6009, Australia
Univ Western Australia, Inst Agr, Perth, WA 6009, AustraliaUniv Western Australia, Sch Agr & Environm M090, Perth, WA 6009, Australia
Ryan, Megan H.
Hahne, Dorothee
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Univ Western Australia, CMCA, 35 Stirling Hwy, Perth, WA 6009, AustraliaUniv Western Australia, Sch Agr & Environm M090, Perth, WA 6009, Australia
Hahne, Dorothee
Haling, Rebecca E.
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CSIRO Agr & Food, GPO Box 1700, Canberra, ACT 2601, AustraliaUniv Western Australia, Sch Agr & Environm M090, Perth, WA 6009, Australia
Haling, Rebecca E.
Lambers, Hans
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Univ Western Australia, Inst Agr, Perth, WA 6009, Australia
Univ Western Australia, Sch Biol Sci, 35 Stirling Hwy, Perth, WA 6009, AustraliaUniv Western Australia, Sch Agr & Environm M090, Perth, WA 6009, Australia
Lambers, Hans
Sandral, Graeme A.
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NSW Dept Primary Ind, Wagga Wagga, NSW 2650, AustraliaUniv Western Australia, Sch Agr & Environm M090, Perth, WA 6009, Australia
Sandral, Graeme A.
Simpson, Richard J.
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CSIRO Agr & Food, GPO Box 1700, Canberra, ACT 2601, AustraliaUniv Western Australia, Sch Agr & Environm M090, Perth, WA 6009, Australia
Simpson, Richard J.
Cawthray, Gregory R.
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Univ Western Australia, Inst Agr, Perth, WA 6009, Australia
Univ Western Australia, Sch Biol Sci, 35 Stirling Hwy, Perth, WA 6009, AustraliaUniv Western Australia, Sch Agr & Environm M090, Perth, WA 6009, Australia