Assessing plant-microbial competition for P-33 using uptake into phospholipids

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Assessing plant-microbial competition for P-33 using uptake into phospholipids. / Rousk, Johannes; Bååth, Erland; Göransson, Hans; Fransson, Ann-Mari.

I: Applied Soil Ecology, Vol. 36, Nr. 2-3, 2007, s. 233-237.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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T1 - Assessing plant-microbial competition for P-33 using uptake into phospholipids

AU - Rousk, Johannes

AU - Bååth, Erland

AU - Göransson, Hans

AU - Fransson, Ann-Mari

PY - 2007

Y1 - 2007

N2 - A novel method of estimating soil microbial P uptake, using P-33 incorporation into the phospholipids in soil microbial biomass, was used in a study of P-competition between plants and microorganisms. The microbial biomass, and thus the competition for the added P-33, was altered by using different glucose treatments in a microcosm set-up. There was obvious competition for P-33, as shown by the negative relationship between P-33 uptake by the plant and P-33 incorporation into microbial phospholipids. The data thus indicate that soil microorganisms partly control P-33 uptake by the plant. The suggested method of measuring P-33 in phospholipids appears to have the potential to provide a rapid alternative to techniques such as chloroform fumigation-extraction for the determination of microbial P uptake, although at present the method will only give relative estimates of P uptake.

AB - A novel method of estimating soil microbial P uptake, using P-33 incorporation into the phospholipids in soil microbial biomass, was used in a study of P-competition between plants and microorganisms. The microbial biomass, and thus the competition for the added P-33, was altered by using different glucose treatments in a microcosm set-up. There was obvious competition for P-33, as shown by the negative relationship between P-33 uptake by the plant and P-33 incorporation into microbial phospholipids. The data thus indicate that soil microorganisms partly control P-33 uptake by the plant. The suggested method of measuring P-33 in phospholipids appears to have the potential to provide a rapid alternative to techniques such as chloroform fumigation-extraction for the determination of microbial P uptake, although at present the method will only give relative estimates of P uptake.

KW - FUMIGATION

KW - RAPID METHOD

KW - EXTRACTION METHOD

KW - BIOMASS-P

KW - SOIL

KW - NITROGEN

KW - PHOSPHORUS

KW - MICROORGANISMS

KW - GLUCOSE

KW - COMMUNITIES

U2 - 10.1016/j.apsoil.2007.03.004

DO - 10.1016/j.apsoil.2007.03.004

M3 - Article

VL - 36

SP - 233

EP - 237

JO - Applied Soil Ecology

JF - Applied Soil Ecology

SN - 0929-1393

IS - 2-3

ER -