Elevated NO2 induces leaf defensive mechanisms in Bougainvillea spectabilis seedlings
With a growing economy, the living standard of people has improved which has led to increased use of urban motor vehicles globally. Consequently, the concentration of nitrogen dioxide (NO2) has increased in the ambient air, becoming a major pollutant in urban areas. Plant leaves can absorb, adsorb a...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Ecotoxicology and Environmental Safety |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651322011320 |
| _version_ | 1811315803844247552 |
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| author | Qianqian Sheng Chengyu Zhou Yuliang Liang Huihui Zhang Min Song Zunling Zhu |
| author_facet | Qianqian Sheng Chengyu Zhou Yuliang Liang Huihui Zhang Min Song Zunling Zhu |
| author_sort | Qianqian Sheng |
| collection | DOAJ |
| description | With a growing economy, the living standard of people has improved which has led to increased use of urban motor vehicles globally. Consequently, the concentration of nitrogen dioxide (NO2) has increased in the ambient air, becoming a major pollutant in urban areas. Plant leaves can absorb, adsorb and fix nitrogen oxides to some extent. Interestingly, NO2 has been recognized as a positive/negative regulator of plant growth. To comprehensively understand the effect of NO2-induced pollution on plants, Bougainvillea spectabilis seedlings were fumigated with different concentrations of nitrogen dioxide (NO2) for a short period in the current study. Further, the induced morphological, physiological, and biochemical changes were measured in the treated as well as untreated seedlings. NO2 exposure caused yellow-brown spotting on the leaf blades in B. spectabilis, which could be the symptoms of oxidative damage. Our findings also reflected the changes in antioxidant enzyme activity and peroxidation of membrane lipids. In addition, the levels of osmotic regulatory substances were also found to be altered to different degrees. In addition, the activities of nitrogen metabolism-related enzymes varied, mainly affecting amino acid metabolism. Overall, the current study would provide a theoretical and scientific basis for selecting and allocating plants in NO2-contaminated areas to manage the pollutants level. |
| first_indexed | 2024-04-13T11:37:55Z |
| format | Article |
| id | doaj.art-cb19acaf3d994355b06ecad958dc74ac |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-04-13T11:37:55Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-cb19acaf3d994355b06ecad958dc74ac2022-12-22T02:48:23ZengElsevierEcotoxicology and Environmental Safety0147-65132022-12-01248114292Elevated NO2 induces leaf defensive mechanisms in Bougainvillea spectabilis seedlingsQianqian Sheng0Chengyu Zhou1Yuliang Liang2Huihui Zhang3Min Song4Zunling Zhu5College of Landscape Architecture, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China; Corresponding authors.College of Landscape Architecture, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, ChinaCollege of Landscape Architecture, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, ChinaCollege of Landscape Architecture, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, ChinaCollege of Landscape Architecture, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, ChinaCollege of Landscape Architecture, Co-Innovation Center for Sustainable Forestry in Southern China, College of Art & Design, Nanjing Forestry University, Nanjing 210037, China; Corresponding authors.With a growing economy, the living standard of people has improved which has led to increased use of urban motor vehicles globally. Consequently, the concentration of nitrogen dioxide (NO2) has increased in the ambient air, becoming a major pollutant in urban areas. Plant leaves can absorb, adsorb and fix nitrogen oxides to some extent. Interestingly, NO2 has been recognized as a positive/negative regulator of plant growth. To comprehensively understand the effect of NO2-induced pollution on plants, Bougainvillea spectabilis seedlings were fumigated with different concentrations of nitrogen dioxide (NO2) for a short period in the current study. Further, the induced morphological, physiological, and biochemical changes were measured in the treated as well as untreated seedlings. NO2 exposure caused yellow-brown spotting on the leaf blades in B. spectabilis, which could be the symptoms of oxidative damage. Our findings also reflected the changes in antioxidant enzyme activity and peroxidation of membrane lipids. In addition, the levels of osmotic regulatory substances were also found to be altered to different degrees. In addition, the activities of nitrogen metabolism-related enzymes varied, mainly affecting amino acid metabolism. Overall, the current study would provide a theoretical and scientific basis for selecting and allocating plants in NO2-contaminated areas to manage the pollutants level.http://www.sciencedirect.com/science/article/pii/S0147651322011320Bougainvillea spectabilisNO2 stressPhysiological indexMetabonomicsAir pollutant |
| spellingShingle | Qianqian Sheng Chengyu Zhou Yuliang Liang Huihui Zhang Min Song Zunling Zhu Elevated NO2 induces leaf defensive mechanisms in Bougainvillea spectabilis seedlings Ecotoxicology and Environmental Safety Bougainvillea spectabilis NO2 stress Physiological index Metabonomics Air pollutant |
| title | Elevated NO2 induces leaf defensive mechanisms in Bougainvillea spectabilis seedlings |
| title_full | Elevated NO2 induces leaf defensive mechanisms in Bougainvillea spectabilis seedlings |
| title_fullStr | Elevated NO2 induces leaf defensive mechanisms in Bougainvillea spectabilis seedlings |
| title_full_unstemmed | Elevated NO2 induces leaf defensive mechanisms in Bougainvillea spectabilis seedlings |
| title_short | Elevated NO2 induces leaf defensive mechanisms in Bougainvillea spectabilis seedlings |
| title_sort | elevated no2 induces leaf defensive mechanisms in bougainvillea spectabilis seedlings |
| topic | Bougainvillea spectabilis NO2 stress Physiological index Metabonomics Air pollutant |
| url | http://www.sciencedirect.com/science/article/pii/S0147651322011320 |
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