Ecophysiological and biochemical responses of saltbush subjected to salinity

Ecophysiological and biochemical responses of saltbush subjected to salinity

ABSTRACT Saltbush, a halophyte species tolerant to salt stress, is an excellent material for the identification of physiological and biochemical mechanisms involved in the resistance to salinity. This study aimed at evaluating the ecophysiological and biochemical responses of saltbush plants at the concentrations of 0 mM, 150 mM, 300 mM, 450 mM and 600 mM of NaCl. Biometry, gas exchange and relative content of chlorophyll and proline in the leaves were measured. Plants presented growth stimulation mainly at the levels of 0 mM, 150 mM and 300 mM of NaCl. Regarding gas exchange, plants showed variation in the photosynthetic rate and stomatal regulation, with a small increase in leaf transpiration. Salinity did not significantly alter the chlorophyll contents, but induced an increase in proline contents in all NaCl levels, demonstrating a growth maintenance capacity and indicating the occurrence of osmotic adjustment.

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Main Authors: Oliveira Junior,Luiz Fernando Ganassali de, Reis,Fabrício de Oliveira, Fagundes,Jailson Lara, Gagliardi,Paulo Roberto, Oliveira,Lucas Fonseca Menezes
Format: Digital revista
Language:English
Published: Escola de Agronomia/UFG 2016
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-40632016000200116
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spelling oai:scielo:S1983-406320160002001162016-08-18Ecophysiological and biochemical responses of saltbush subjected to salinityOliveira Junior,Luiz Fernando Ganassali deReis,Fabrício de OliveiraFagundes,Jailson LaraGagliardi,Paulo RobertoOliveira,Lucas Fonseca Menezes Atriplex numulária gas exchange proline ABSTRACT Saltbush, a halophyte species tolerant to salt stress, is an excellent material for the identification of physiological and biochemical mechanisms involved in the resistance to salinity. This study aimed at evaluating the ecophysiological and biochemical responses of saltbush plants at the concentrations of 0 mM, 150 mM, 300 mM, 450 mM and 600 mM of NaCl. Biometry, gas exchange and relative content of chlorophyll and proline in the leaves were measured. Plants presented growth stimulation mainly at the levels of 0 mM, 150 mM and 300 mM of NaCl. Regarding gas exchange, plants showed variation in the photosynthetic rate and stomatal regulation, with a small increase in leaf transpiration. Salinity did not significantly alter the chlorophyll contents, but induced an increase in proline contents in all NaCl levels, demonstrating a growth maintenance capacity and indicating the occurrence of osmotic adjustment.info:eu-repo/semantics/openAccessEscola de Agronomia/UFGPesquisa Agropecuária Tropical v.46 n.2 20162016-06-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-40632016000200116en10.1590/1983-40632016v4638719
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country Brasil
countrycode BR
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region America del Sur
libraryname SciELO
language English
format Digital
author Oliveira Junior,Luiz Fernando Ganassali de
Reis,Fabrício de Oliveira
Fagundes,Jailson Lara
Gagliardi,Paulo Roberto
Oliveira,Lucas Fonseca Menezes
spellingShingle Oliveira Junior,Luiz Fernando Ganassali de
Reis,Fabrício de Oliveira
Fagundes,Jailson Lara
Gagliardi,Paulo Roberto
Oliveira,Lucas Fonseca Menezes
Ecophysiological and biochemical responses of saltbush subjected to salinity
author_facet Oliveira Junior,Luiz Fernando Ganassali de
Reis,Fabrício de Oliveira
Fagundes,Jailson Lara
Gagliardi,Paulo Roberto
Oliveira,Lucas Fonseca Menezes
author_sort Oliveira Junior,Luiz Fernando Ganassali de
title Ecophysiological and biochemical responses of saltbush subjected to salinity
title_short Ecophysiological and biochemical responses of saltbush subjected to salinity
title_full Ecophysiological and biochemical responses of saltbush subjected to salinity
title_fullStr Ecophysiological and biochemical responses of saltbush subjected to salinity
title_full_unstemmed Ecophysiological and biochemical responses of saltbush subjected to salinity
title_sort ecophysiological and biochemical responses of saltbush subjected to salinity
description ABSTRACT Saltbush, a halophyte species tolerant to salt stress, is an excellent material for the identification of physiological and biochemical mechanisms involved in the resistance to salinity. This study aimed at evaluating the ecophysiological and biochemical responses of saltbush plants at the concentrations of 0 mM, 150 mM, 300 mM, 450 mM and 600 mM of NaCl. Biometry, gas exchange and relative content of chlorophyll and proline in the leaves were measured. Plants presented growth stimulation mainly at the levels of 0 mM, 150 mM and 300 mM of NaCl. Regarding gas exchange, plants showed variation in the photosynthetic rate and stomatal regulation, with a small increase in leaf transpiration. Salinity did not significantly alter the chlorophyll contents, but induced an increase in proline contents in all NaCl levels, demonstrating a growth maintenance capacity and indicating the occurrence of osmotic adjustment.
publisher Escola de Agronomia/UFG
publishDate 2016
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-40632016000200116
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AT fagundesjailsonlara ecophysiologicalandbiochemicalresponsesofsaltbushsubjectedtosalinity
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