Sediment Metal Contamination, Bioavailability, and Oxidative Stress Response in Mangrove Avicennia marina in Central Red Sea
Anthropogenic activities have been on the increase in the urban environment and have led to contamination of the environment with toxic metals. However, mangrove plants’ response to heavy metal stress due to anthropogenic activities explains the metal bioavailability and its potential ecotoxicologic...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2021-06-01
|
| Series: | Frontiers in Environmental Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fenvs.2021.691257/full |
| _version_ | 1818743967454330880 |
|---|---|
| author | Abdullahi Bala Alhassan Abdullahi Bala Alhassan Mohammed Othman Aljahdali |
| author_facet | Abdullahi Bala Alhassan Abdullahi Bala Alhassan Mohammed Othman Aljahdali |
| author_sort | Abdullahi Bala Alhassan |
| collection | DOAJ |
| description | Anthropogenic activities have been on the increase in the urban environment and have led to contamination of the environment with toxic metals. However, mangrove plants’ response to heavy metal stress due to anthropogenic activities explains the metal bioavailability and its potential ecotoxicological effect. We carried out a multi-approach study to investigate i) if the concentrations of metals (Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Mo, Cd, Pb, Sr, and V) in mangroves at the central Red Sea are due to the anthropogenic influence and are above the sediment quality guidelines and ii) if an increase in metal concentration influences height and antioxidant enzyme (catalase, CAT; glutathione S-transferase, GST; and superoxide dismutase, SOD) activities in Avicennia marina. There were significant variations (p < 0.05) in metal concentrations and antioxidants across the six mangrove ecosystems with higher concentrations at Al Lith (LT) and south Jeddah (SJ). Even though the concentrations of metals in mangrove leaves are slightly higher in LT than SJ, principal component analysis showed that higher concentrations of Cr, Co, Zn, Cd, and Pb in mangrove leaves from SJ influence higher antioxidant enzyme activities and the lowest average mangrove height (2.01 m). This suggests that higher metal concentrations be factors for the biggest stress in these mangrove ecosystems. However, among the 13 metals, Cr (82.07 mg/kg), Cu (41.29 mg/kg), and As (10.30 mg/kg) in sediments have values within the ERL range of probable effect, while Ni (53.09 mg/kg) was above the ERM threshold. Hence, there is need to focus on monitoring these metals in mangrove sediments and their anthropogenic sources. |
| first_indexed | 2024-12-18T02:36:49Z |
| format | Article |
| id | doaj.art-8f18f15c9a5045d88b8c28da02851bcb |
| institution | Directory Open Access Journal |
| issn | 2296-665X |
| language | English |
| last_indexed | 2024-12-18T02:36:49Z |
| publishDate | 2021-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Environmental Science |
| spelling | doaj.art-8f18f15c9a5045d88b8c28da02851bcb2022-12-21T21:23:45ZengFrontiers Media S.A.Frontiers in Environmental Science2296-665X2021-06-01910.3389/fenvs.2021.691257691257Sediment Metal Contamination, Bioavailability, and Oxidative Stress Response in Mangrove Avicennia marina in Central Red SeaAbdullahi Bala Alhassan0Abdullahi Bala Alhassan1Mohammed Othman Aljahdali2Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU), Jeddah, Saudi ArabiaDepartment of Biology, Faculty of Life Sciences, Ahmadu Bello University, Zaria, NigeriaDepartment of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU), Jeddah, Saudi ArabiaAnthropogenic activities have been on the increase in the urban environment and have led to contamination of the environment with toxic metals. However, mangrove plants’ response to heavy metal stress due to anthropogenic activities explains the metal bioavailability and its potential ecotoxicological effect. We carried out a multi-approach study to investigate i) if the concentrations of metals (Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Mo, Cd, Pb, Sr, and V) in mangroves at the central Red Sea are due to the anthropogenic influence and are above the sediment quality guidelines and ii) if an increase in metal concentration influences height and antioxidant enzyme (catalase, CAT; glutathione S-transferase, GST; and superoxide dismutase, SOD) activities in Avicennia marina. There were significant variations (p < 0.05) in metal concentrations and antioxidants across the six mangrove ecosystems with higher concentrations at Al Lith (LT) and south Jeddah (SJ). Even though the concentrations of metals in mangrove leaves are slightly higher in LT than SJ, principal component analysis showed that higher concentrations of Cr, Co, Zn, Cd, and Pb in mangrove leaves from SJ influence higher antioxidant enzyme activities and the lowest average mangrove height (2.01 m). This suggests that higher metal concentrations be factors for the biggest stress in these mangrove ecosystems. However, among the 13 metals, Cr (82.07 mg/kg), Cu (41.29 mg/kg), and As (10.30 mg/kg) in sediments have values within the ERL range of probable effect, while Ni (53.09 mg/kg) was above the ERM threshold. Hence, there is need to focus on monitoring these metals in mangrove sediments and their anthropogenic sources.https://www.frontiersin.org/articles/10.3389/fenvs.2021.691257/fullheavy metalsanthropogenic activitiesmangrovestressantioxidantsRabigh |
| spellingShingle | Abdullahi Bala Alhassan Abdullahi Bala Alhassan Mohammed Othman Aljahdali Sediment Metal Contamination, Bioavailability, and Oxidative Stress Response in Mangrove Avicennia marina in Central Red Sea Frontiers in Environmental Science heavy metals anthropogenic activities mangrove stress antioxidants Rabigh |
| title | Sediment Metal Contamination, Bioavailability, and Oxidative Stress Response in Mangrove Avicennia marina in Central Red Sea |
| title_full | Sediment Metal Contamination, Bioavailability, and Oxidative Stress Response in Mangrove Avicennia marina in Central Red Sea |
| title_fullStr | Sediment Metal Contamination, Bioavailability, and Oxidative Stress Response in Mangrove Avicennia marina in Central Red Sea |
| title_full_unstemmed | Sediment Metal Contamination, Bioavailability, and Oxidative Stress Response in Mangrove Avicennia marina in Central Red Sea |
| title_short | Sediment Metal Contamination, Bioavailability, and Oxidative Stress Response in Mangrove Avicennia marina in Central Red Sea |
| title_sort | sediment metal contamination bioavailability and oxidative stress response in mangrove avicennia marina in central red sea |
| topic | heavy metals anthropogenic activities mangrove stress antioxidants Rabigh |
| url | https://www.frontiersin.org/articles/10.3389/fenvs.2021.691257/full |
| work_keys_str_mv | AT abdullahibalaalhassan sedimentmetalcontaminationbioavailabilityandoxidativestressresponseinmangroveavicenniamarinaincentralredsea AT abdullahibalaalhassan sedimentmetalcontaminationbioavailabilityandoxidativestressresponseinmangroveavicenniamarinaincentralredsea AT mohammedothmanaljahdali sedimentmetalcontaminationbioavailabilityandoxidativestressresponseinmangroveavicenniamarinaincentralredsea |