Cargando…

Importance of Physiological Traits Vulnerability in Determine Halophytes Tolerance to Salinity Excess: A Comparative Assessment in Atriplex halimus

Many halophytic physiological traits related to the tolerance of plants to salinity excess have been extensively studied, with a focus on biomass and/or gas exchange parameters. To gain a more complete understanding of whether salinity excess affects the physiological performance of halophytes, an e...

Descripción completa

Detalles Bibliográficos
Autores principales: Pérez-Romero, Jesús Alberto, Mateos-Naranjo, Enrique, López-Jurado, Javier, Redondo-Gómez, Susana, Torres-Ruiz, José M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7356256/
https://www.ncbi.nlm.nih.gov/pubmed/32481734
http://dx.doi.org/10.3390/plants9060690
_version_ 1783558458601111552
author Pérez-Romero, Jesús Alberto
Mateos-Naranjo, Enrique
López-Jurado, Javier
Redondo-Gómez, Susana
Torres-Ruiz, José M.
author_facet Pérez-Romero, Jesús Alberto
Mateos-Naranjo, Enrique
López-Jurado, Javier
Redondo-Gómez, Susana
Torres-Ruiz, José M.
author_sort Pérez-Romero, Jesús Alberto
collection PubMed
description Many halophytic physiological traits related to the tolerance of plants to salinity excess have been extensively studied, with a focus on biomass and/or gas exchange parameters. To gain a more complete understanding of whether salinity excess affects the physiological performance of halophytes, an experiment was performed using the halophyte Atriplex halimus L. as a model. A. halimus plants were subjected to two salinity treatments (171 and 513 mM NaCl) over 60 days in a controlled environment. After this period, dry biomass, specific stem conductivity, water potential at turgor loss point, osmotic potential, gas exchange parameters, and the fluorescence of chlorophyll a derived parameters were assessed in order to obtain knowledge about the differences in vulnerability that these parameters can show when subjected to salinity stress. Our results showed a decrease in belowground and aboveground biomass. The decrement in biomass seen at 513 mM NaCl was related to photosynthetic limitations and specific stem conductivity. Turgor loss point did not vary significantly with the increment of salinity. Therefore, the parameter that showed less vulnerability to saline stress was the turgor loss point, with only a 5% decrease, and the more vulnerable trait was the stem conductivity, with a reduction of nearly 50%.
format Online
Article
Text
id pubmed-7356256
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-73562562020-07-31 Importance of Physiological Traits Vulnerability in Determine Halophytes Tolerance to Salinity Excess: A Comparative Assessment in Atriplex halimus Pérez-Romero, Jesús Alberto Mateos-Naranjo, Enrique López-Jurado, Javier Redondo-Gómez, Susana Torres-Ruiz, José M. Plants (Basel) Article Many halophytic physiological traits related to the tolerance of plants to salinity excess have been extensively studied, with a focus on biomass and/or gas exchange parameters. To gain a more complete understanding of whether salinity excess affects the physiological performance of halophytes, an experiment was performed using the halophyte Atriplex halimus L. as a model. A. halimus plants were subjected to two salinity treatments (171 and 513 mM NaCl) over 60 days in a controlled environment. After this period, dry biomass, specific stem conductivity, water potential at turgor loss point, osmotic potential, gas exchange parameters, and the fluorescence of chlorophyll a derived parameters were assessed in order to obtain knowledge about the differences in vulnerability that these parameters can show when subjected to salinity stress. Our results showed a decrease in belowground and aboveground biomass. The decrement in biomass seen at 513 mM NaCl was related to photosynthetic limitations and specific stem conductivity. Turgor loss point did not vary significantly with the increment of salinity. Therefore, the parameter that showed less vulnerability to saline stress was the turgor loss point, with only a 5% decrease, and the more vulnerable trait was the stem conductivity, with a reduction of nearly 50%. MDPI 2020-05-28 /pmc/articles/PMC7356256/ /pubmed/32481734 http://dx.doi.org/10.3390/plants9060690 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Pérez-Romero, Jesús Alberto
Mateos-Naranjo, Enrique
López-Jurado, Javier
Redondo-Gómez, Susana
Torres-Ruiz, José M.
Importance of Physiological Traits Vulnerability in Determine Halophytes Tolerance to Salinity Excess: A Comparative Assessment in Atriplex halimus
title Importance of Physiological Traits Vulnerability in Determine Halophytes Tolerance to Salinity Excess: A Comparative Assessment in Atriplex halimus
title_full Importance of Physiological Traits Vulnerability in Determine Halophytes Tolerance to Salinity Excess: A Comparative Assessment in Atriplex halimus
title_fullStr Importance of Physiological Traits Vulnerability in Determine Halophytes Tolerance to Salinity Excess: A Comparative Assessment in Atriplex halimus
title_full_unstemmed Importance of Physiological Traits Vulnerability in Determine Halophytes Tolerance to Salinity Excess: A Comparative Assessment in Atriplex halimus
title_short Importance of Physiological Traits Vulnerability in Determine Halophytes Tolerance to Salinity Excess: A Comparative Assessment in Atriplex halimus
title_sort importance of physiological traits vulnerability in determine halophytes tolerance to salinity excess: a comparative assessment in atriplex halimus
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7356256/
https://www.ncbi.nlm.nih.gov/pubmed/32481734
http://dx.doi.org/10.3390/plants9060690
work_keys_str_mv AT perezromerojesusalberto importanceofphysiologicaltraitsvulnerabilityindeterminehalophytestolerancetosalinityexcessacomparativeassessmentinatriplexhalimus
AT mateosnaranjoenrique importanceofphysiologicaltraitsvulnerabilityindeterminehalophytestolerancetosalinityexcessacomparativeassessmentinatriplexhalimus
AT lopezjuradojavier importanceofphysiologicaltraitsvulnerabilityindeterminehalophytestolerancetosalinityexcessacomparativeassessmentinatriplexhalimus
AT redondogomezsusana importanceofphysiologicaltraitsvulnerabilityindeterminehalophytestolerancetosalinityexcessacomparativeassessmentinatriplexhalimus
AT torresruizjosem importanceofphysiologicaltraitsvulnerabilityindeterminehalophytestolerancetosalinityexcessacomparativeassessmentinatriplexhalimus