Interaction of cyanide uptake by sorghum and wheat with nitrogen supply

Cyanide occurs naturally in soils, arising from biological cyanogenesis and also in some cases from anthropogenic contamination. Plant utilization of cyanide at non-toxic concentrations as a supplemental source of nitrogen has been a topic of recent scientific interest and it was investigated here u...

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Autores principales:	Whankaew,S, Machingura,M, Rhanor,T, Triwitayakorn,K, Ebbs,S
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2014
Materias:	Ammonium Cyanide ß -Cyanoalanine pathway nitrate nitrogen
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000200007
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spelling	oai:scielo:S0718-951620140002000072014-07-30Interaction of cyanide uptake by sorghum and wheat with nitrogen supplyWhankaew,SMachingura,MRhanor,TTriwitayakorn,KEbbs,S Ammonium Cyanide ß -Cyanoalanine pathway nitrate nitrogen Cyanide occurs naturally in soils, arising from biological cyanogenesis and also in some cases from anthropogenic contamination. Plant utilization of cyanide at non-toxic concentrations as a supplemental source of nitrogen has been a topic of recent scientific interest and it was investigated here using sorghum (Sorghum bicolor L.) and wheat (Triticum aestivum L.). The accumulation of cyanogenic nitrogen in plant tissues was assessed under nitrogen regimes with specific combinations of cyanide, ammonium, and nitrate or each nitrogen source alone. Cyanogenic nitrogen accumulated in plant tissues when in combination with nitrate and accumulation of cyanogenic nitrogen decreased when ammonium was present. A greater increase of nitrogen in tissue from cyanide was observed in both species when cyanide was substituted for ammonium, but accumulation of cyanogenic nitrogen decreased when ammonium was present. A reciprocal nitrogen labeling experiment showed that nitrogen from nitrate and ammonium was accumulated preferentially over cyanogenic nitrogen. Differences in biomass and relative growth rate were observed in response to the treatments where plants were grown with nitrate, ammonium, or cyanide as the sole nitrogen source, but not when cyanide was present along with ammonium and nitrate. Physiological nitrogen use efficiency did not differ significantly within a species for any treatment imposed. The results suggest that cyanide as a nitrogen source can potentially support plant growth and development for up to eight weeks, but more effectively in combination with ammonium and nitrate.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.14 n.2 20142014-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000200007en10.4067/S0718-95162014005000027
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Ammonium Cyanide ß -Cyanoalanine pathway nitrate nitrogen
spellingShingle	Ammonium Cyanide ß -Cyanoalanine pathway nitrate nitrogen Whankaew,S Machingura,M Rhanor,T Triwitayakorn,K Ebbs,S Interaction of cyanide uptake by sorghum and wheat with nitrogen supply
description	Cyanide occurs naturally in soils, arising from biological cyanogenesis and also in some cases from anthropogenic contamination. Plant utilization of cyanide at non-toxic concentrations as a supplemental source of nitrogen has been a topic of recent scientific interest and it was investigated here using sorghum (Sorghum bicolor L.) and wheat (Triticum aestivum L.). The accumulation of cyanogenic nitrogen in plant tissues was assessed under nitrogen regimes with specific combinations of cyanide, ammonium, and nitrate or each nitrogen source alone. Cyanogenic nitrogen accumulated in plant tissues when in combination with nitrate and accumulation of cyanogenic nitrogen decreased when ammonium was present. A greater increase of nitrogen in tissue from cyanide was observed in both species when cyanide was substituted for ammonium, but accumulation of cyanogenic nitrogen decreased when ammonium was present. A reciprocal nitrogen labeling experiment showed that nitrogen from nitrate and ammonium was accumulated preferentially over cyanogenic nitrogen. Differences in biomass and relative growth rate were observed in response to the treatments where plants were grown with nitrate, ammonium, or cyanide as the sole nitrogen source, but not when cyanide was present along with ammonium and nitrate. Physiological nitrogen use efficiency did not differ significantly within a species for any treatment imposed. The results suggest that cyanide as a nitrogen source can potentially support plant growth and development for up to eight weeks, but more effectively in combination with ammonium and nitrate.
author	Whankaew,S Machingura,M Rhanor,T Triwitayakorn,K Ebbs,S
author_facet	Whankaew,S Machingura,M Rhanor,T Triwitayakorn,K Ebbs,S
author_sort	Whankaew,S
title	Interaction of cyanide uptake by sorghum and wheat with nitrogen supply
title_short	Interaction of cyanide uptake by sorghum and wheat with nitrogen supply
title_full	Interaction of cyanide uptake by sorghum and wheat with nitrogen supply
title_fullStr	Interaction of cyanide uptake by sorghum and wheat with nitrogen supply
title_full_unstemmed	Interaction of cyanide uptake by sorghum and wheat with nitrogen supply
title_sort	interaction of cyanide uptake by sorghum and wheat with nitrogen supply
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000200007
work_keys_str_mv	AT whankaews interactionofcyanideuptakebysorghumandwheatwithnitrogensupply AT machinguram interactionofcyanideuptakebysorghumandwheatwithnitrogensupply AT rhanort interactionofcyanideuptakebysorghumandwheatwithnitrogensupply AT triwitayakornk interactionofcyanideuptakebysorghumandwheatwithnitrogensupply AT ebbss interactionofcyanideuptakebysorghumandwheatwithnitrogensupply
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Interaction of cyanide uptake by sorghum and wheat with nitrogen supply

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