Physiological responses of two different epiphytic bromeliads exposed in a polluted subtropical region in southeast Brazil characterized by seasonal climate

Climate and atmospheric pollutants, such as ozone (O3), nitrogen oxides (NOx), sulfur dioxide (SO2), herbicides and particulate matter, can elevate the production of reactive oxygen species (ROS) and increase stress on plants. However, many plants can tolerate stress, neutralizing ROS through their...

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Autores principales:	Patricia Giampaoli, Armando Reis Tavares, Marisa Domingos
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Antioxidant, Pigments Air pollution Biomonitoring Bromeliaceae Spanish moss Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/49dcea045c194d979bb21c86c91f3c45
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spelling	oai:doaj.org-article:49dcea045c194d979bb21c86c91f3c452021-12-01T04:30:12ZPhysiological responses of two different epiphytic bromeliads exposed in a polluted subtropical region in southeast Brazil characterized by seasonal climate1470-160X10.1016/j.ecolind.2020.106945https://doaj.org/article/49dcea045c194d979bb21c86c91f3c452021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20308840https://doaj.org/toc/1470-160XClimate and atmospheric pollutants, such as ozone (O3), nitrogen oxides (NOx), sulfur dioxide (SO2), herbicides and particulate matter, can elevate the production of reactive oxygen species (ROS) and increase stress on plants. However, many plants can tolerate stress, neutralizing ROS through their antioxidant defense system and physiological mechanisms. Some, such as bromeliad species, are even able to accumulate pollutants and/or avoid the entry of pollutants into their tissues. This study aimed at investigating comparatively physiological responses of Aechmea fasciata and Tillandsia usneoides in a polluted subtropical region characterized by seasonal climate. We raised the hypothesis that the species most acclimatable physiologically to the seasonal climate will be the most appropriate for pollution biomonitoring purposes. To accomplish this, A. fasciata and T. usneoides plants were exposed in five locations in the metropolitan region of Campinas (MRC), São Paulo State, Brazil, for 22 months in 12-week cycles, totaling 8 exposure periods. Key non-enzymatic antioxidants (ascorbic acid and glutathione), chlorophylls and indicators of lipid peroxidation (hydroperoxide diene conjugated and malondialdehyde) and growth parameters were measured at the end of each exposure. Results showed that A. fasciata and T. usneoides have different strategies, especially regarding the potential to tolerate oxidative stress and grow in the subtropical region characterized by pollutants and seasonal climate. A. fasciata has a higher ability to change their antioxidant metabolism than T. usneoides to compensate the oxidative stress induced by environmental stressors in the study region, despite its higher MDA levels. The physiological parameters of A. fasciata were inversely correlated with air pollutants, revealing that the specie is responsive to fluctuations of environmental stressors. T. usneoides did not interact physiologically with air pollutants during wet periods. Therefore, we concluded that A. fasciata is a more efficient bioindicator bromeliad in a polluted subtropical region characterized by seasonal climate.Patricia GiampaoliArmando Reis TavaresMarisa DomingosElsevierarticleAntioxidant, PigmentsAir pollutionBiomonitoringBromeliaceaeSpanish mossEcologyQH540-549.5ENEcological Indicators, Vol 120, Iss , Pp 106945- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Antioxidant, Pigments Air pollution Biomonitoring Bromeliaceae Spanish moss Ecology QH540-549.5
spellingShingle	Antioxidant, Pigments Air pollution Biomonitoring Bromeliaceae Spanish moss Ecology QH540-549.5 Patricia Giampaoli Armando Reis Tavares Marisa Domingos Physiological responses of two different epiphytic bromeliads exposed in a polluted subtropical region in southeast Brazil characterized by seasonal climate
description	Climate and atmospheric pollutants, such as ozone (O3), nitrogen oxides (NOx), sulfur dioxide (SO2), herbicides and particulate matter, can elevate the production of reactive oxygen species (ROS) and increase stress on plants. However, many plants can tolerate stress, neutralizing ROS through their antioxidant defense system and physiological mechanisms. Some, such as bromeliad species, are even able to accumulate pollutants and/or avoid the entry of pollutants into their tissues. This study aimed at investigating comparatively physiological responses of Aechmea fasciata and Tillandsia usneoides in a polluted subtropical region characterized by seasonal climate. We raised the hypothesis that the species most acclimatable physiologically to the seasonal climate will be the most appropriate for pollution biomonitoring purposes. To accomplish this, A. fasciata and T. usneoides plants were exposed in five locations in the metropolitan region of Campinas (MRC), São Paulo State, Brazil, for 22 months in 12-week cycles, totaling 8 exposure periods. Key non-enzymatic antioxidants (ascorbic acid and glutathione), chlorophylls and indicators of lipid peroxidation (hydroperoxide diene conjugated and malondialdehyde) and growth parameters were measured at the end of each exposure. Results showed that A. fasciata and T. usneoides have different strategies, especially regarding the potential to tolerate oxidative stress and grow in the subtropical region characterized by pollutants and seasonal climate. A. fasciata has a higher ability to change their antioxidant metabolism than T. usneoides to compensate the oxidative stress induced by environmental stressors in the study region, despite its higher MDA levels. The physiological parameters of A. fasciata were inversely correlated with air pollutants, revealing that the specie is responsive to fluctuations of environmental stressors. T. usneoides did not interact physiologically with air pollutants during wet periods. Therefore, we concluded that A. fasciata is a more efficient bioindicator bromeliad in a polluted subtropical region characterized by seasonal climate.
format	article
author	Patricia Giampaoli Armando Reis Tavares Marisa Domingos
author_facet	Patricia Giampaoli Armando Reis Tavares Marisa Domingos
author_sort	Patricia Giampaoli
title	Physiological responses of two different epiphytic bromeliads exposed in a polluted subtropical region in southeast Brazil characterized by seasonal climate
title_short	Physiological responses of two different epiphytic bromeliads exposed in a polluted subtropical region in southeast Brazil characterized by seasonal climate
title_full	Physiological responses of two different epiphytic bromeliads exposed in a polluted subtropical region in southeast Brazil characterized by seasonal climate
title_fullStr	Physiological responses of two different epiphytic bromeliads exposed in a polluted subtropical region in southeast Brazil characterized by seasonal climate
title_full_unstemmed	Physiological responses of two different epiphytic bromeliads exposed in a polluted subtropical region in southeast Brazil characterized by seasonal climate
title_sort	physiological responses of two different epiphytic bromeliads exposed in a polluted subtropical region in southeast brazil characterized by seasonal climate
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/49dcea045c194d979bb21c86c91f3c45
work_keys_str_mv	AT patriciagiampaoli physiologicalresponsesoftwodifferentepiphyticbromeliadsexposedinapollutedsubtropicalregioninsoutheastbrazilcharacterizedbyseasonalclimate AT armandoreistavares physiologicalresponsesoftwodifferentepiphyticbromeliadsexposedinapollutedsubtropicalregioninsoutheastbrazilcharacterizedbyseasonalclimate AT marisadomingos physiologicalresponsesoftwodifferentepiphyticbromeliadsexposedinapollutedsubtropicalregioninsoutheastbrazilcharacterizedbyseasonalclimate
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Physiological responses of two different epiphytic bromeliads exposed in a polluted subtropical region in southeast Brazil characterized by seasonal climate

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