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Tytuł pozycji:

Availability of organic and inorganic phosphorus compounds as phosphorus sources for Carex species.

Tytuł :
Availability of organic and inorganic phosphorus compounds as phosphorus sources for Carex species.
Autorzy :
Pérez Corona ME; Department of Plant Ecology and Evolutionary Biology, Utrecht University, PO Box 800.84, 3508 TB Utrecht, The Netherlands.
VAN DER Klundert I; Department of Plant Ecology and Evolutionary Biology, Utrecht University, PO Box 800.84, 3508 TB Utrecht, The Netherlands.
Verhoeven JTA; Department of Plant Ecology and Evolutionary Biology, Utrecht University, PO Box 800.84, 3508 TB Utrecht, The Netherlands.
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Źródło :
The New phytologist [New Phytol] 1996 Jun; Vol. 133 (2), pp. 225-231.
Typ publikacji :
Journal Article
Język :
English
Imprint Name(s) :
Publication: Oxford : Wiley on behalf of New Phytologist Trust
Original Publication: London, New York [etc.] Academic Press.
Contributed Indexing :
Keywords: Floating fens; P-productivity; P-uptake; mobilization
Entry Date(s) :
Date Created: 20180423 Latest Revision: 20201001
Update Code :
20201218
DOI :
10.1111/j.1469-8137.1996.tb01889.x
PMID :
29681074
Czasopismo naukowe
Inorganic phosphates (ferric phosphate, calcium phosphate and aluminium phosphate) and organic forms of phosphorus (inosito) hexaphosphate and β-glycerophosphate) were tested as phosphorus (P) sources for the growth of three Carex species from fens differing in productivity- and nutrient availability. Aluminium phosphate and β-glycerophosphate were equally effective sources of P for all three Carex species as KH 2 PO 4 , which was used as a control treatment. Phosphorus from ferric phosphate and calcium phosphate was also taken up bv Carex acutiformis Ehrh., a species of high productivity from eutrophic fen areas, but not by the other two species. Only Carex lasiocarpa Ehrh., a species from P-limited fens, showed a higher P-uptake when grown with inositol phosphate than in the second control treatment without P. The P-source also affected, with differences between species, the biomass allocation to the below-ground plant parts and the area of absorption surface of the roots. The mobilization of organic sources of P by fen Carex species found in the present study might be an important factor in the P dynamics of fens because of the high contents of organic P in the fen peat soils where these species grow. In the same way, the utilization of inorganic sources of P can play a relevant role in the P-cycle in these systems where the discharge of ground water rich in ions can lead to the fixation of P into inorganic compounds. However, the differing abilities of the various Carex species to mobilize P from P-pools does not explain clearly their preferential presence in different fens in relation to the P-availability.

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