Silicon mitigates ammonium toxicity in yellow passionfruit seedlings

ABSTRACT Ammonium (NH4 +) toxicity in yellow passionfruit (Passiflora edulis Sims f. flavicarpa O. Deg.) may be mitigated by Si application. This study aimed to evaluate the interaction effect of Si and high level of NH4 + on yellow passionfruit seedlings nutrition, physiology, growth, and DM produc...

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Autores principales:	Silva Júnior,Gabriel B. da, Prado,Renato M., Campos,Cid. N.S., Agostinho,Flávia B., Silva,Sylvia L. O., Santos,Luiz C.N., González,Leónides C.
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2019
Materias:	Abiotic stress beneficial element NH4 + nitrogen Passiflora edulis toxicity
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000300425
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spelling	oai:scielo:S0718-583920190003004252019-07-18Silicon mitigates ammonium toxicity in yellow passionfruit seedlingsSilva Júnior,Gabriel B. daPrado,Renato M.Campos,Cid. N.S.Agostinho,Flávia B.Silva,Sylvia L. O.Santos,Luiz C.N.González,Leónides C. Abiotic stress beneficial element NH4 + nitrogen Passiflora edulis toxicity ABSTRACT Ammonium (NH4 +) toxicity in yellow passionfruit (Passiflora edulis Sims f. flavicarpa O. Deg.) may be mitigated by Si application. This study aimed to evaluate the interaction effect of Si and high level of NH4 + on yellow passionfruit seedlings nutrition, physiology, growth, and DM production. Pots were filled with pinus bark and nutrition solution was applied. Treatments were arranged in a completely randomized design, with five replicates, in a 2 × 2 factorial scheme: two ratios of NH4 + and nitrate, NO3 + (40/60%, without high level of NH4 +; and 75/25%, with high level of NH4 +) at N concentration of 13 mmol N L-1, in the absence and presence of Si (2.0 mmol L-1). Sixty days after seedling transplant it was evaluated: N, Si, K, Ca and Mg root and shoots accumulation, leaf green color index (GCI), electrolyte leakage index (ELI), intracellular CO2 concentration (Ci), transpiration rate (Tr), stomatal conductance (gs), net photosynthesis rate (Pn), stem diameter, leaf area, root length, N use efficiency (NUE) and root and shoot DM content. Plants cultivated with Si had 19.1% and 16.3% lower Tr and gs, respectively, regardless NH4 + concentration. Moreover, Ci and Pn were 13.2% and 16.4%, respectively, higher in plants that received Si. Plants cultivated under high NH4 + concentrations, with Si application had 17% bigger stem diameter and 15.4% bigger root length than plants without Si application. Si application in yellow passionfruit seedlings cultivated with high level of NH4 + increased accumulation and NUE, root length, root DM, and GCI. In addition, Si application reduced ELI, which resulted in higher stem diameter. These results prove that Si application mitigates NH4 + toxicity in yellow passionfruit seedlingsinfo:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.79 n.3 20192019-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000300425en10.4067/S0718-58392019000300425
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Abiotic stress beneficial element NH4 + nitrogen Passiflora edulis toxicity
spellingShingle	Abiotic stress beneficial element NH4 + nitrogen Passiflora edulis toxicity Silva Júnior,Gabriel B. da Prado,Renato M. Campos,Cid. N.S. Agostinho,Flávia B. Silva,Sylvia L. O. Santos,Luiz C.N. González,Leónides C. Silicon mitigates ammonium toxicity in yellow passionfruit seedlings
description	ABSTRACT Ammonium (NH4 +) toxicity in yellow passionfruit (Passiflora edulis Sims f. flavicarpa O. Deg.) may be mitigated by Si application. This study aimed to evaluate the interaction effect of Si and high level of NH4 + on yellow passionfruit seedlings nutrition, physiology, growth, and DM production. Pots were filled with pinus bark and nutrition solution was applied. Treatments were arranged in a completely randomized design, with five replicates, in a 2 × 2 factorial scheme: two ratios of NH4 + and nitrate, NO3 + (40/60%, without high level of NH4 +; and 75/25%, with high level of NH4 +) at N concentration of 13 mmol N L-1, in the absence and presence of Si (2.0 mmol L-1). Sixty days after seedling transplant it was evaluated: N, Si, K, Ca and Mg root and shoots accumulation, leaf green color index (GCI), electrolyte leakage index (ELI), intracellular CO2 concentration (Ci), transpiration rate (Tr), stomatal conductance (gs), net photosynthesis rate (Pn), stem diameter, leaf area, root length, N use efficiency (NUE) and root and shoot DM content. Plants cultivated with Si had 19.1% and 16.3% lower Tr and gs, respectively, regardless NH4 + concentration. Moreover, Ci and Pn were 13.2% and 16.4%, respectively, higher in plants that received Si. Plants cultivated under high NH4 + concentrations, with Si application had 17% bigger stem diameter and 15.4% bigger root length than plants without Si application. Si application in yellow passionfruit seedlings cultivated with high level of NH4 + increased accumulation and NUE, root length, root DM, and GCI. In addition, Si application reduced ELI, which resulted in higher stem diameter. These results prove that Si application mitigates NH4 + toxicity in yellow passionfruit seedlings
author	Silva Júnior,Gabriel B. da Prado,Renato M. Campos,Cid. N.S. Agostinho,Flávia B. Silva,Sylvia L. O. Santos,Luiz C.N. González,Leónides C.
author_facet	Silva Júnior,Gabriel B. da Prado,Renato M. Campos,Cid. N.S. Agostinho,Flávia B. Silva,Sylvia L. O. Santos,Luiz C.N. González,Leónides C.
author_sort	Silva Júnior,Gabriel B. da
title	Silicon mitigates ammonium toxicity in yellow passionfruit seedlings
title_short	Silicon mitigates ammonium toxicity in yellow passionfruit seedlings
title_full	Silicon mitigates ammonium toxicity in yellow passionfruit seedlings
title_fullStr	Silicon mitigates ammonium toxicity in yellow passionfruit seedlings
title_full_unstemmed	Silicon mitigates ammonium toxicity in yellow passionfruit seedlings
title_sort	silicon mitigates ammonium toxicity in yellow passionfruit seedlings
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000300425
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_version_	1714205391151169536

Silicon mitigates ammonium toxicity in yellow passionfruit seedlings

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