Leaf nitrogen thresholds ensuring high antioxidant features of Vaccinium corymbosum cultivars

Deficiency or excess of nitrogen (N) supply can promote formation of reactive oxygen species in plants, inducing oxidative stress. Otherwise, plants may enhance phenolics biosynthesis and antioxidant capacity under N deficiency, but this effect is plant species-dependent. There is no information abo...

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Autores principales:	Yañez-Mansilla,E, Cartes,P, Reyes-Díaz,M, Ribera-Fonseca,A, Rengel,Z, Alberdi,M
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2015
Materias:	Antioxidant responses phenolic compounds photosynthesis superoxide dismutase Vaccinium corymbosum
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162015000300003
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spelling	oai:scielo:S0718-951620150003000032015-10-14Leaf nitrogen thresholds ensuring high antioxidant features of Vaccinium corymbosum cultivarsYañez-Mansilla,ECartes,PReyes-Díaz,MRibera-Fonseca,ARengel,ZAlberdi,M Antioxidant responses phenolic compounds photosynthesis superoxide dismutase Vaccinium corymbosum Deficiency or excess of nitrogen (N) supply can promote formation of reactive oxygen species in plants, inducing oxidative stress. Otherwise, plants may enhance phenolics biosynthesis and antioxidant capacity under N deficiency, but this effect is plant species-dependent. There is no information about influence on phenolics and antioxidant activity in highbush blueberry (Vaccinium corymbosum L.), in which quality and commercial importance depend on high phenolics concentration. We studied the effect of variable N supply (0 to 38 mM) on N uptake and antioxidant responses in two highbush blueberry cultivars (Legacy and Bluegold) hydroponically grown at the long-term. Nitrogen leaves concentration was enhanced for both cultivars at increasing N supply. Bluegold decreased CO2 assimilation at 0 N treatment, possibly due to both, insufficient N concentration and a decline in superoxide dismutase (SOD) activity. In contrast, SOD was activated in Legacy at 0 N, and interestingly only this cultivar maintained CO2 assimilation rates across all N treatments. Both cultivars showed higher phenolics and antioxidant activity levels at 9 mM. Despite the differential responses among the cultivars, we propose a threshold of 15 g N kg-1 DW to ensure high antioxidant activity and quality in blueberry leaves.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.15 n.3 20152015-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162015000300003en10.4067/S0718-95162015005000025
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Antioxidant responses phenolic compounds photosynthesis superoxide dismutase Vaccinium corymbosum
spellingShingle	Antioxidant responses phenolic compounds photosynthesis superoxide dismutase Vaccinium corymbosum Yañez-Mansilla,E Cartes,P Reyes-Díaz,M Ribera-Fonseca,A Rengel,Z Alberdi,M Leaf nitrogen thresholds ensuring high antioxidant features of Vaccinium corymbosum cultivars
description	Deficiency or excess of nitrogen (N) supply can promote formation of reactive oxygen species in plants, inducing oxidative stress. Otherwise, plants may enhance phenolics biosynthesis and antioxidant capacity under N deficiency, but this effect is plant species-dependent. There is no information about influence on phenolics and antioxidant activity in highbush blueberry (Vaccinium corymbosum L.), in which quality and commercial importance depend on high phenolics concentration. We studied the effect of variable N supply (0 to 38 mM) on N uptake and antioxidant responses in two highbush blueberry cultivars (Legacy and Bluegold) hydroponically grown at the long-term. Nitrogen leaves concentration was enhanced for both cultivars at increasing N supply. Bluegold decreased CO2 assimilation at 0 N treatment, possibly due to both, insufficient N concentration and a decline in superoxide dismutase (SOD) activity. In contrast, SOD was activated in Legacy at 0 N, and interestingly only this cultivar maintained CO2 assimilation rates across all N treatments. Both cultivars showed higher phenolics and antioxidant activity levels at 9 mM. Despite the differential responses among the cultivars, we propose a threshold of 15 g N kg-1 DW to ensure high antioxidant activity and quality in blueberry leaves.
author	Yañez-Mansilla,E Cartes,P Reyes-Díaz,M Ribera-Fonseca,A Rengel,Z Alberdi,M
author_facet	Yañez-Mansilla,E Cartes,P Reyes-Díaz,M Ribera-Fonseca,A Rengel,Z Alberdi,M
author_sort	Yañez-Mansilla,E
title	Leaf nitrogen thresholds ensuring high antioxidant features of Vaccinium corymbosum cultivars
title_short	Leaf nitrogen thresholds ensuring high antioxidant features of Vaccinium corymbosum cultivars
title_full	Leaf nitrogen thresholds ensuring high antioxidant features of Vaccinium corymbosum cultivars
title_fullStr	Leaf nitrogen thresholds ensuring high antioxidant features of Vaccinium corymbosum cultivars
title_full_unstemmed	Leaf nitrogen thresholds ensuring high antioxidant features of Vaccinium corymbosum cultivars
title_sort	leaf nitrogen thresholds ensuring high antioxidant features of vaccinium corymbosum cultivars
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162015000300003
work_keys_str_mv	AT yanezmansillae leafnitrogenthresholdsensuringhighantioxidantfeaturesofvacciniumcorymbosumcultivars AT cartesp leafnitrogenthresholdsensuringhighantioxidantfeaturesofvacciniumcorymbosumcultivars AT reyesdiazm leafnitrogenthresholdsensuringhighantioxidantfeaturesofvacciniumcorymbosumcultivars AT riberafonsecaa leafnitrogenthresholdsensuringhighantioxidantfeaturesofvacciniumcorymbosumcultivars AT rengelz leafnitrogenthresholdsensuringhighantioxidantfeaturesofvacciniumcorymbosumcultivars AT alberdim leafnitrogenthresholdsensuringhighantioxidantfeaturesofvacciniumcorymbosumcultivars
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Leaf nitrogen thresholds ensuring high antioxidant features of Vaccinium corymbosum cultivars

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