Proline and ions accumulation in four  Passiflora species under water-saline stress

Hurtado Salazar, Alejandro; Pereira da Silva, Danielle Fabiola; Ceballos-Aguirre, Nelson; Ocampo, John; Horst Bruckner, Claudio

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dc.creator	Hurtado Salazar, Alejandro
dc.creator	Pereira da Silva, Danielle Fabiola
dc.creator	Ceballos-Aguirre, Nelson
dc.creator	Ocampo, John
dc.creator	Horst Bruckner, Claudio
dc.date	2018-04-12
dc.date.accessioned	2023-03-30T19:35:03Z
dc.date.available	2023-03-30T19:35:03Z
dc.identifier	https://comunicatascientiae.com.br/comunicata/article/view/2323
dc.identifier	10.14295/cs.v8i4.2323
dc.identifier.uri	https://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/246743
dc.description	Water-saline stress is one of the factors limiting growth and crop production, with the induction of morphological, structural and metabolic changes in higher plants. This study aimed to evaluate the response of four species with ten accessions of Passiflora to saline stress and drought stress, and the accumulation of proline and content of cationic macronutrients and their relationships with sodium. The plants were grown under controlled conditions for seven months, watered with nutrient solution with additions of NaCl (100 mM) to achieve the desired conductivities (1.5, 2.5, 4.0, and 5.5 dS m-1) and constant substrate humidity of 100%, 66% and 33%. The concentrations of Na+, K+, Ca++, Mg++ and proline in the leaves were determined. Proline accumulation increased in salinized plants, especially in young leaves. Proline increase was evident in accessions tolerant and moderately tolerant to salinity. These results indicate that tolerance to salinity and water stress in Passiflora relates to an improved ability to exclude sodium and greater ability to accumulate proline for osmotic adjustment. The increased salinity of the nutrient solution increased sodium contents, relations Na+/Ca++, Na+/Mg++, Na+/K+, and decreased Ca++, Mg++ and K+ levels, reflecting the nutritional imbalance caused by progressive saline stress.	en-US
dc.description	Water-saline stress is one of the factors limiting growth and crop production, with the induction of morphological, structural and metabolic changes in higher plants. This study aimed to evaluate the response of four species with ten accessions of Passiflora to saline stress and drought stress, and the accumulation of proline and content of cationic macronutrients and their relationships with sodium. The plants were grown under controlled conditions for seven months, watered with nutrient solution with additions of NaCl (100 mM) to achieve the desired conductivities (1.5, 2.5, 4.0, and 5.5 dS m-1) and constant substrate humidity of 100%, 66% and 33%. The concentrations of Na+, K+, Ca++, Mg++ and proline in the leaves were determined. Proline accumulation increased in salinized plants, especially in young leaves. Proline increase was evident in accessions tolerant and moderately tolerant to salinity. These results indicate that tolerance to salinity and water stress in Passiflora relates to an improved ability to exclude sodium and greater ability to accumulate proline for osmotic adjustment. The increased salinity of the nutrient solution increased sodium contents, relations Na+/Ca++, Na+/Mg++, Na+/K+, and decreased Ca++, Mg++ and K+ levels, reflecting the nutritional imbalance caused by progressive saline stress.	pt-BR
dc.format	application/pdf
dc.language	eng
dc.publisher	Federal University of Piauí	en-US
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/2323/507
dc.rights	Copyright (c) 2018 Alejandro Hurtado Salazar, Danielle Fabiola Pereira da Silva, Nelson Ceballos-Aguirre, John Ocampo, Claudio Horst Bruckner	en-US
dc.source	Comunicata Scientiae; Vol. 8 No. 4 (2017); 570-580	en-US
dc.source	Comunicata Scientiae; v. 8 n. 4 (2017); 570-580	pt-BR
dc.source	2177-5133
dc.source	2176-9079
dc.subject	NaCl	en-US
dc.subject	abiotic stress	en-US
dc.subject	stress physiology	en-US
dc.subject	tolerance	en-US
dc.subject	NaCl	pt-BR
dc.subject	abiotic stress	pt-BR
dc.subject	stress physiology	pt-BR
dc.subject	tolerance	pt-BR
dc.title	Proline and ions accumulation in four Passiflora species under water-saline stress	en-US
dc.title	Proline and ions accumulation in four Passiflora species under water-saline stress	pt-BR
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion