Elevated atmospheric CO2 decreases the ammonia compensation point of barley plants

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Elevated atmospheric CO2 decreases the ammonia compensation point of barley plants. / Wang, Liang; Pedas, Pai; Eriksson, Ulf Dennis; Schjørring, Jan K.

In: Journal of Experimental Botany, Vol. 64, No. 10, 2013, p. 2713-2724.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Wang, L, Pedas, P, Eriksson, UD & Schjørring, JK 2013, 'Elevated atmospheric CO2 decreases the ammonia compensation point of barley plants', Journal of Experimental Botany, vol. 64, no. 10, pp. 2713-2724. https://doi.org/10.1093/jxb/ert117

APA

Wang, L., Pedas, P., Eriksson, U. D., & Schjørring, J. K. (2013). Elevated atmospheric CO2 decreases the ammonia compensation point of barley plants. Journal of Experimental Botany, 64(10), 2713-2724. https://doi.org/10.1093/jxb/ert117

Vancouver

Wang L, Pedas P, Eriksson UD, Schjørring JK. Elevated atmospheric CO2 decreases the ammonia compensation point of barley plants. Journal of Experimental Botany. 2013;64(10):2713-2724. https://doi.org/10.1093/jxb/ert117

Author

Wang, Liang ; Pedas, Pai ; Eriksson, Ulf Dennis ; Schjørring, Jan K. / Elevated atmospheric CO2 decreases the ammonia compensation point of barley plants. In: Journal of Experimental Botany. 2013 ; Vol. 64, No. 10. pp. 2713-2724.

Bibtex

@article{a84b788607ce42c891443a30b99a4457,
title = "Elevated atmospheric CO2 decreases the ammonia compensation point of barley plants",
abstract = "The ammonia compensation point (chi(NH3)) controls the direction and magnitude of NH3 exchange between plant leaves and the atmosphere. Very limited information is currently available on how chi(NH3) responds to anticipated climate changes. Young barley plants were grown for 2 weeks at ambient (400 mu mol mol(-1)) or elevated (800 mu mol mol(-1)) CO2 concentration with NO3- or NH4NO3 as the nitrogen source. The concentrations of NH4+ and H+ in the leaf apoplastic solution were measured along with different foliar N pools and enzymes involved in N metabolism. Elevated CO2 caused a threefold decrease in the NH4+ concentration in the apoplastic solution and slightly acidified it. This resulted in a decline of the chi(NH3) from 2.25 and 2.95 nmol mol(-1) under ambient CO2 to 0.37 and 0.89 nmol mol(-1) at elevated CO2 in the NO3- and NH4NO3 treatments, respectively. The decrease in chi(NH3) at elevated CO2 reflected a lower N concentration (-25 in the shoot dry matter. The activity of nitrate reductase also declined (-45 to -60, while that of glutamine synthetase was unaffected by elevated CO2. It is concluded that elevated CO2 increases the likelihood of plants being a sink for atmospheric NH3 and reduces episodes of NH3 emission from plants.",
keywords = "ammonia compensation point (NH3), barley, carbon dioxide (CO2), climate change, nitrate reductase, nitrogen metabolism",
author = "Liang Wang and Pai Pedas and Eriksson, {Ulf Dennis} and Schj{\o}rring, {Jan K.}",
year = "2013",
doi = "10.1093/jxb/ert117",
language = "English",
volume = "64",
pages = "2713--2724",
journal = "Journal of Experimental Botany",
issn = "0022-0957",
publisher = "Oxford University Press",
number = "10",

}

RIS

TY - JOUR

T1 - Elevated atmospheric CO2 decreases the ammonia compensation point of barley plants

AU - Wang, Liang

AU - Pedas, Pai

AU - Eriksson, Ulf Dennis

AU - Schjørring, Jan K.

PY - 2013

Y1 - 2013

N2 - The ammonia compensation point (chi(NH3)) controls the direction and magnitude of NH3 exchange between plant leaves and the atmosphere. Very limited information is currently available on how chi(NH3) responds to anticipated climate changes. Young barley plants were grown for 2 weeks at ambient (400 mu mol mol(-1)) or elevated (800 mu mol mol(-1)) CO2 concentration with NO3- or NH4NO3 as the nitrogen source. The concentrations of NH4+ and H+ in the leaf apoplastic solution were measured along with different foliar N pools and enzymes involved in N metabolism. Elevated CO2 caused a threefold decrease in the NH4+ concentration in the apoplastic solution and slightly acidified it. This resulted in a decline of the chi(NH3) from 2.25 and 2.95 nmol mol(-1) under ambient CO2 to 0.37 and 0.89 nmol mol(-1) at elevated CO2 in the NO3- and NH4NO3 treatments, respectively. The decrease in chi(NH3) at elevated CO2 reflected a lower N concentration (-25 in the shoot dry matter. The activity of nitrate reductase also declined (-45 to -60, while that of glutamine synthetase was unaffected by elevated CO2. It is concluded that elevated CO2 increases the likelihood of plants being a sink for atmospheric NH3 and reduces episodes of NH3 emission from plants.

AB - The ammonia compensation point (chi(NH3)) controls the direction and magnitude of NH3 exchange between plant leaves and the atmosphere. Very limited information is currently available on how chi(NH3) responds to anticipated climate changes. Young barley plants were grown for 2 weeks at ambient (400 mu mol mol(-1)) or elevated (800 mu mol mol(-1)) CO2 concentration with NO3- or NH4NO3 as the nitrogen source. The concentrations of NH4+ and H+ in the leaf apoplastic solution were measured along with different foliar N pools and enzymes involved in N metabolism. Elevated CO2 caused a threefold decrease in the NH4+ concentration in the apoplastic solution and slightly acidified it. This resulted in a decline of the chi(NH3) from 2.25 and 2.95 nmol mol(-1) under ambient CO2 to 0.37 and 0.89 nmol mol(-1) at elevated CO2 in the NO3- and NH4NO3 treatments, respectively. The decrease in chi(NH3) at elevated CO2 reflected a lower N concentration (-25 in the shoot dry matter. The activity of nitrate reductase also declined (-45 to -60, while that of glutamine synthetase was unaffected by elevated CO2. It is concluded that elevated CO2 increases the likelihood of plants being a sink for atmospheric NH3 and reduces episodes of NH3 emission from plants.

KW - ammonia compensation point (NH3)

KW - barley

KW - carbon dioxide (CO2)

KW - climate change

KW - nitrate reductase

KW - nitrogen metabolism

U2 - 10.1093/jxb/ert117

DO - 10.1093/jxb/ert117

M3 - Journal article

C2 - 23740933

VL - 64

SP - 2713

EP - 2724

JO - Journal of Experimental Botany

JF - Journal of Experimental Botany

SN - 0022-0957

IS - 10

ER -

ID: 119825813