Effects of sulfide concentration, pH, and anoxia on photosynthesis and respiration of Zostera marina
Sulfide produced in marine sediments by sulfate reduction is toxic for several macrophytes, and high sediment sulfide concentrations have been associated with seagrass die-off events. Sulfide has been shown to reduce growth in a number of seagrasses, but little is known about its effect on the photo...
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| Format: | Article |
| Language: | English |
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Universidad Autónoma de Baja California
2012-12-01
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| Series: | Ciencias Marinas |
| Subjects: | |
| Online Access: | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2034 |
| _version_ | 1797279509189230592 |
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| author | LK Korhonen V Macías-Carranza R Abdala FL Figueroa A Cabello-Pasini |
| author_facet | LK Korhonen V Macías-Carranza R Abdala FL Figueroa A Cabello-Pasini |
| author_sort | LK Korhonen |
| collection | DOAJ |
| description | Sulfide produced in marine sediments by sulfate reduction is toxic for several macrophytes, and high sediment sulfide concentrations have been associated with seagrass die-off events. Sulfide has been shown to reduce growth in a number of seagrasses, but little is known about its effect on the photosynthetic and respiratory metabolism. Consequently, the aim of this research was to evaluate the effect of sulfide on photosynthesis and respiration of the seagrass Zostera marina. Photosynthetic oxygen evolution and respiration were determined polarographically, while the optimum quantum yield was used as a measure of the photosynthetic performance of photosystem II in the leaves of Z. marina. The results showed that sulfide concentrations of approximately 1000 uM could be considered an upper threshold limit for the survival of Z. marina in the coastal lagoons of Baja California (Mexico) studied. Respiration was not inhibited by sulfide concentrations up to
1000 ?M during 48-h incubations, while photosynthetic performance was reduced by short exposure to sulfide concentrations of 25 uM but also by long exposure to concentrations as low as 50 uM. This is the first study that shows that the photosynthetic capacity of Z. marina is not recovered once the sulfide-free conditions have been re-established. |
| first_indexed | 2024-03-07T16:26:22Z |
| format | Article |
| id | doaj.art-2bbfd0b2850145e093bb70b95cdd6431 |
| institution | Directory Open Access Journal |
| issn | 0185-3880 2395-9053 |
| language | English |
| last_indexed | 2024-03-07T16:26:22Z |
| publishDate | 2012-12-01 |
| publisher | Universidad Autónoma de Baja California |
| record_format | Article |
| series | Ciencias Marinas |
| spelling | doaj.art-2bbfd0b2850145e093bb70b95cdd64312024-03-03T17:53:40ZengUniversidad Autónoma de Baja CaliforniaCiencias Marinas0185-38802395-90532012-12-0138410.7773/cm.v38i4.2034Effects of sulfide concentration, pH, and anoxia on photosynthesis and respiration of Zostera marinaLK Korhonen0V Macías-Carranza1R Abdala2FL Figueroa3A Cabello-Pasini4Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, apartado postal 453, Ensenada 22800, Baja California, México.Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, apartado postal 453, Ensenada 22800, Baja California, México.Departamento de Ecología, Facultad de Ciencias, Universidad de Málaga, E-29071, Málaga, Spain.Departamento de Ecología, Facultad de Ciencias, Universidad de Málaga, E-29071, Málaga, Spain.Universidad Autonoma de Baja CaliforniaSulfide produced in marine sediments by sulfate reduction is toxic for several macrophytes, and high sediment sulfide concentrations have been associated with seagrass die-off events. Sulfide has been shown to reduce growth in a number of seagrasses, but little is known about its effect on the photosynthetic and respiratory metabolism. Consequently, the aim of this research was to evaluate the effect of sulfide on photosynthesis and respiration of the seagrass Zostera marina. Photosynthetic oxygen evolution and respiration were determined polarographically, while the optimum quantum yield was used as a measure of the photosynthetic performance of photosystem II in the leaves of Z. marina. The results showed that sulfide concentrations of approximately 1000 uM could be considered an upper threshold limit for the survival of Z. marina in the coastal lagoons of Baja California (Mexico) studied. Respiration was not inhibited by sulfide concentrations up to 1000 ?M during 48-h incubations, while photosynthetic performance was reduced by short exposure to sulfide concentrations of 25 uM but also by long exposure to concentrations as low as 50 uM. This is the first study that shows that the photosynthetic capacity of Z. marina is not recovered once the sulfide-free conditions have been re-established.https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2034aerobic respirationoptimum quantum yieldsulfidephotosynthesisZostera marina |
| spellingShingle | LK Korhonen V Macías-Carranza R Abdala FL Figueroa A Cabello-Pasini Effects of sulfide concentration, pH, and anoxia on photosynthesis and respiration of Zostera marina Ciencias Marinas aerobic respiration optimum quantum yield sulfide photosynthesis Zostera marina |
| title | Effects of sulfide concentration, pH, and anoxia on photosynthesis and respiration of Zostera marina |
| title_full | Effects of sulfide concentration, pH, and anoxia on photosynthesis and respiration of Zostera marina |
| title_fullStr | Effects of sulfide concentration, pH, and anoxia on photosynthesis and respiration of Zostera marina |
| title_full_unstemmed | Effects of sulfide concentration, pH, and anoxia on photosynthesis and respiration of Zostera marina |
| title_short | Effects of sulfide concentration, pH, and anoxia on photosynthesis and respiration of Zostera marina |
| title_sort | effects of sulfide concentration ph and anoxia on photosynthesis and respiration of zostera marina |
| topic | aerobic respiration optimum quantum yield sulfide photosynthesis Zostera marina |
| url | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2034 |
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