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231225s1994 xx |||||o 00| ||eng c |
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|a 10.1111/j.1469-8137.1994.tb04014.x
|2 doi
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|a DE-627
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|e rakwb
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|a eng
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1 |
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|a Pérez-Soba, Marta
|e verfasserin
|4 aut
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| 245 |
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|a Gaseous ammonia counteracts the response of Scots pine needles to elevated atmospheric carbon dioxide
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|c 1994
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 20.04.2021
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Four-year-old saplings of Scots pine (Pinus sylvestris L.) were exposed for 8 wk in controlled-environment chambers to charcoal-filtered air (FA), FA supplemented with 754 mg m-3 (650 μl 1-1 )CO2 , FA supplemented with l00 μ m13 NH3 and FA+CO2 +NH3 . Elevated CO2 induced a significant increase in the concentrations of NH4 + and NO3 in the soil solution, while exposure to NH3 enhanced the soil NH4 - concentration. Elevated CO2 significantly increased needle biomass and area, and decreased specific leaf are (SLA) and N concentration in the needle. The activity of peroidase (POD) was decreased, while the activities of glutamine synthetase (GS) and glutamate dehydrogenase (GDH) were only slightly affected. Gaseous NH3 enhanced the concentration of N. soluble proteins and the GS activity in the needless, while it decreased the POD and GDH activities. The effects of elevated CO2 + NH3 on needle biomass production, N Metabolism and POD activity were smaller than the effects of single exposures to elevated CO2 or NH3 . Suggesting that elevated CO2 and NH3 counteract each other and disturb needle physiology. The possible mechanisms underlying the negative interactions of elevated CO2 and NH3 and discussed. The expected stimulation of biomass production by elevated CO2 my be reduced in the presence of atmospheric NH3
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|a Journal Article
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|a Air pollution
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|a ammonia
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| 650 |
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|a elevated carbon dioxide
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|a nitrogen metabolism
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|a pinus sylvestris (Scots pine)
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|a VAN DER Eerden, Ludger J M
|e verfasserin
|4 aut
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1 |
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|a Stulen, Ineke
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kuiper, Pieter J C
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1984
|g 128(1994), 2 vom: 25. Okt., Seite 307-313
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnas
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| 773 |
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|g volume:128
|g year:1994
|g number:2
|g day:25
|g month:10
|g pages:307-313
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|u http://dx.doi.org/10.1111/j.1469-8137.1994.tb04014.x
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|d 128
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