Relationship between plant phosphorus status and the kinetics of arsenate influx in clones of deschampsia cespitosa (L.) beauv. that differ in their tolerance to arsenate


Autoria(s): Meharg, Andrew A.; Macnair, Mark R.
Data(s)

01/05/1994

Resumo

<p>Uptake kinetics of arsenate were determined in arsenate tolerant and non-tolerant clones of the grass Deschampsia cespitosa under differing root phosphorus status to investigate the mechanism controlling the suppression of arsenate influx observed in tolerant clones. Influx was always lower in tolerants compared to non-tolerants. Short term influx of arsenate by the high affinity uptake system in both tolerant clones was relatively insensitive to root phosphorus status. This was in contrast to the literature where the regulation of the phosphate (arsenate) uptake system is normally much more responsive to plant phosphorus status. The low affinity uptake system in both tolerant and non-tolerant clones, unlike the high affinity uptake system, was more closely regulated by root phosphate status and was repressed to a much greater degree under increasing root phosphorus levels than the high affinity system. © 1994 Kluwer Academic Publishers.</p>

Identificador

http://pure.qub.ac.uk/portal/en/publications/relationship-between-plant-phosphorus-status-and-the-kinetics-of-arsenate-influx-in-clones-of-deschampsia-cespitosa-l-beauv-that-differ-in-their-tolerance-to-arsenate(bbfac498-b128-4b47-b6b5-a44a610ec9a1).html

http://dx.doi.org/10.1007/BF01416094

http://www.scopus.com/inward/record.url?scp=0028010382&partnerID=8YFLogxK

Idioma(s)

eng

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Meharg , A A & Macnair , M R 1994 , ' Relationship between plant phosphorus status and the kinetics of arsenate influx in clones of deschampsia cespitosa (L.) beauv. that differ in their tolerance to arsenate ' Plant and Soil , vol 162 , no. 1 , pp. 99-106 . DOI: 10.1007/BF01416094

Palavras-Chave #arsenate tolerance #Deschampsia cespitosa #phosphorus nutrition #uptake kinetics #/dk/atira/pure/subjectarea/asjc/1100/1111 #Soil Science #/dk/atira/pure/subjectarea/asjc/1100/1110 #Plant Science #/dk/atira/pure/subjectarea/asjc/1100/1102 #Agronomy and Crop Science
Tipo

article