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Ecophysiological Plasticity and Cold Stress Adaptation in Himalayan Alpine Herbs: Bistorta affinis and Sibbaldia procumbens

Plants have evolved several metabolic pathways as a response to environmental stressors such as low temperatures. In this perspective, it is paramount to highlight physiological mechanisms of plant responses to altitudinal gradients as a proxy to evaluate changing environments. Here, we aimed to det...

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Autores principales: Rahman, Inayat Ur, Hart, Robbie, Afzal, Aftab, Iqbal, Zafar, Alqarawi, Abdulaziz A., Abd_Allah, Elsayed Fathi, Hashem, Abeer, Ijaz, Farhana, Ali, Niaz, Calixto, Eduardo Soares
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6843325/
https://www.ncbi.nlm.nih.gov/pubmed/31569761
http://dx.doi.org/10.3390/plants8100378
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author Rahman, Inayat Ur
Hart, Robbie
Afzal, Aftab
Iqbal, Zafar
Alqarawi, Abdulaziz A.
Abd_Allah, Elsayed Fathi
Hashem, Abeer
Ijaz, Farhana
Ali, Niaz
Calixto, Eduardo Soares
author_facet Rahman, Inayat Ur
Hart, Robbie
Afzal, Aftab
Iqbal, Zafar
Alqarawi, Abdulaziz A.
Abd_Allah, Elsayed Fathi
Hashem, Abeer
Ijaz, Farhana
Ali, Niaz
Calixto, Eduardo Soares
author_sort Rahman, Inayat Ur
collection PubMed
description Plants have evolved several metabolic pathways as a response to environmental stressors such as low temperatures. In this perspective, it is paramount to highlight physiological mechanisms of plant responses to altitudinal gradients as a proxy to evaluate changing environments. Here, we aimed to determine the impact of elevation on the physiological attributes of two plant species along an altitudinal gradient. Our hypothesis was that the altitudinal gradient influences proline, protein, and sugar contents, as well as abscisic acid (ABA) and indole acetic acid (IAA) concentrations. We studied these physiological components in leaves collected from four different altitudinal ranges in Himalayan region of Pakistan from two native herbs, namely Bistorta affinis and Sibbaldia procumbens. Leaves were collected at the initial blooming phase from each altitudinal range, viz. 2850 m, 3250 m, 3750 m and 4250 m. We observed that most abiotic factors decrease with altitude which induces cold acclimation. A significant increase in the concentration of physiological components was observed as altitude increased, except for IAA, which decreased. Furthermore, we did not find variations in proline, ABA and IAA concentrations between species; only sugar and protein, with higher values for B. affinis. We conclude that altitudinal gradients significantly affect the physiological components of B. affinis and S. procumbens in Himalayan region. This result contributes to the understanding of how plants adapt to environmental pressures, acting as a proxy for the evaluation of impacts caused by climate changes.
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spelling pubmed-68433252019-11-25 Ecophysiological Plasticity and Cold Stress Adaptation in Himalayan Alpine Herbs: Bistorta affinis and Sibbaldia procumbens Rahman, Inayat Ur Hart, Robbie Afzal, Aftab Iqbal, Zafar Alqarawi, Abdulaziz A. Abd_Allah, Elsayed Fathi Hashem, Abeer Ijaz, Farhana Ali, Niaz Calixto, Eduardo Soares Plants (Basel) Article Plants have evolved several metabolic pathways as a response to environmental stressors such as low temperatures. In this perspective, it is paramount to highlight physiological mechanisms of plant responses to altitudinal gradients as a proxy to evaluate changing environments. Here, we aimed to determine the impact of elevation on the physiological attributes of two plant species along an altitudinal gradient. Our hypothesis was that the altitudinal gradient influences proline, protein, and sugar contents, as well as abscisic acid (ABA) and indole acetic acid (IAA) concentrations. We studied these physiological components in leaves collected from four different altitudinal ranges in Himalayan region of Pakistan from two native herbs, namely Bistorta affinis and Sibbaldia procumbens. Leaves were collected at the initial blooming phase from each altitudinal range, viz. 2850 m, 3250 m, 3750 m and 4250 m. We observed that most abiotic factors decrease with altitude which induces cold acclimation. A significant increase in the concentration of physiological components was observed as altitude increased, except for IAA, which decreased. Furthermore, we did not find variations in proline, ABA and IAA concentrations between species; only sugar and protein, with higher values for B. affinis. We conclude that altitudinal gradients significantly affect the physiological components of B. affinis and S. procumbens in Himalayan region. This result contributes to the understanding of how plants adapt to environmental pressures, acting as a proxy for the evaluation of impacts caused by climate changes. MDPI 2019-09-27 /pmc/articles/PMC6843325/ /pubmed/31569761 http://dx.doi.org/10.3390/plants8100378 Text en © 2019 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
Rahman, Inayat Ur
Hart, Robbie
Afzal, Aftab
Iqbal, Zafar
Alqarawi, Abdulaziz A.
Abd_Allah, Elsayed Fathi
Hashem, Abeer
Ijaz, Farhana
Ali, Niaz
Calixto, Eduardo Soares
Ecophysiological Plasticity and Cold Stress Adaptation in Himalayan Alpine Herbs: Bistorta affinis and Sibbaldia procumbens
title Ecophysiological Plasticity and Cold Stress Adaptation in Himalayan Alpine Herbs: Bistorta affinis and Sibbaldia procumbens
title_full Ecophysiological Plasticity and Cold Stress Adaptation in Himalayan Alpine Herbs: Bistorta affinis and Sibbaldia procumbens
title_fullStr Ecophysiological Plasticity and Cold Stress Adaptation in Himalayan Alpine Herbs: Bistorta affinis and Sibbaldia procumbens
title_full_unstemmed Ecophysiological Plasticity and Cold Stress Adaptation in Himalayan Alpine Herbs: Bistorta affinis and Sibbaldia procumbens
title_short Ecophysiological Plasticity and Cold Stress Adaptation in Himalayan Alpine Herbs: Bistorta affinis and Sibbaldia procumbens
title_sort ecophysiological plasticity and cold stress adaptation in himalayan alpine herbs: bistorta affinis and sibbaldia procumbens
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6843325/
https://www.ncbi.nlm.nih.gov/pubmed/31569761
http://dx.doi.org/10.3390/plants8100378
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