Experimental flooding modifies rhizosphere conditions, induces photoacclimation and promotes antioxidant activities in Rhizophora mucronata seedlings
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Surangkana Phandee
Surangkana Phandee received a Master’s degree in Biology from Prince of Songkla University in 2020. During her Master’s degree, she was supported by a scholarship from the government of Thailand under the Development and Promotion of Science and Technology Talents Project (DPST). This study is a part of her Master’s thesis.
Wilawan Hwan-air received a Master’s degree in Forensic Science from Prince of Songkla University in 2017. She is currently a research assistant at Coastal Oceanography and Climate Change Research Center. She has optimized and developed several protocols for assessing oxidative stress-related physiological responses in marine plants and corals and is actively in involved in many projects at the research center.
Sutthinut Soonthornkalump received a PhD from Prince of Songkla University in 2020. He is currently a postdoctoral fellow under Prince of Songkla President Scholarship. He is researching adaptive and developmental anatomy of plants and is specialized in investigating plant anatomical characteristics using microtechniques.
Michael Jenke is a researcher at Kasetsart University in Bangkok, Thailand. With his background in tropical forestry, his main focus is on developing strategies for the sustainable management and restoration of mangrove ecosystems. Michael is not only interested in understanding the ecology of mangroves but also the socio-ecological systems that affect their management.
Pimchanok Buapet is an assistant professor at the Division of Biological Science and the director of Coastal Oceanography and Climate Change Research Center at Prince of Songkla University, Thailand. Her research interest is ecophysiology of marine plants, in particular, the mechanisms which these plants employ to cope with climate change-related stressors.
Abstract
Survival of mangrove seedlings under flooding depends on their tolerance and adaptation. This study investigated the effects of flooding on rhizosphere conditions: porewater dissolved oxygen (DO), pH, and soil oxidation–reduction potential (ORP) and photosynthetic and antioxidant activities (superoxide dismutase [SOD] and guaiacol peroxidase [POX] activity and glutathione [GSH] content) of Rhizophora mucronata seedlings. The experiment lasted 20 days with three treatments: control (with drainage), waterlogging (10 cm of water above the soil surface) and submergence. Our results demonstrate that waterlogging and submergence resulted in a reduction in porewater DO, pH and soil ORP from day 5 into the treatment. Submergence resulted in lower maximum electron transport rates, lower saturating irradiance and higher light utilization efficiency from day 5 onwards, but stomatal closure was detected in both flooded treatments. POX activity and GSH content in the roots were increased by submergence. On day 5, submerged plants showed higher root POX activity than the other two treatments and higher root GSH content than controls. However, these parameters decreased on day 20, so that no difference among the treatments remained. As persistent flooding was shown to hamper the physiological performance of mangrove seedlings, extreme weather events and sea-level rise should be closely monitored.
Funding source: The development and promotion of science and technology talent project (DPST)
Funding source: The government budget (or budget revenue) of Prince of Songkla University
Award Identifier / Grant number: SCI6201006S
Funding source: Faculty of Science, Prince of Songkla UniversityPrince of Songkla University
About the authors
Surangkana Phandee received a Master’s degree in Biology from Prince of Songkla University in 2020. During her Master’s degree, she was supported by a scholarship from the government of Thailand under the Development and Promotion of Science and Technology Talents Project (DPST). This study is a part of her Master’s thesis.
Wilawan Hwan-air received a Master’s degree in Forensic Science from Prince of Songkla University in 2017. She is currently a research assistant at Coastal Oceanography and Climate Change Research Center. She has optimized and developed several protocols for assessing oxidative stress-related physiological responses in marine plants and corals and is actively in involved in many projects at the research center.
Sutthinut Soonthornkalump received a PhD from Prince of Songkla University in 2020. He is currently a postdoctoral fellow under Prince of Songkla President Scholarship. He is researching adaptive and developmental anatomy of plants and is specialized in investigating plant anatomical characteristics using microtechniques.
Michael Jenke is a researcher at Kasetsart University in Bangkok, Thailand. With his background in tropical forestry, his main focus is on developing strategies for the sustainable management and restoration of mangrove ecosystems. Michael is not only interested in understanding the ecology of mangroves but also the socio-ecological systems that affect their management.
Pimchanok Buapet is an assistant professor at the Division of Biological Science and the director of Coastal Oceanography and Climate Change Research Center at Prince of Songkla University, Thailand. Her research interest is ecophysiology of marine plants, in particular, the mechanisms which these plants employ to cope with climate change-related stressors.
Acknowledgments
The authors acknowledge Dr. Seppo Karrila and the Research and Development Office, Prince of Songkla University for assistance with the English proofreading.
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Author contributions: Surangkana Phandee: concep-tualization, methodology, investigation, validation, data curation, formal analysis, visualization, writing- original draft preparation, writing- reviewing and editing. Wilawan Hwan-air: investigation, data curation, formal analysis, original draft preparation. Sutthinut Soonthornkalump: investigation, data curation, formal analysis, original draft preparation. Michael Jenke: methodology, data curation, formal analysis, visualization, writing- reviewing and editing. Pimchanok Buapet: conceptualization, methodology, investigation, validation, data curation, formal analysis, visualization, writing- original draft preparation, writing- reviewing and editing, funding acquisition.
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Research funding: This work was supported by the government budget (or budget revenue) of Prince of Songkla University (SCI6201006S). Additional financial support was provided by the development and promotion of science and technology talent project (DPST) and the Faculty of Science, Prince of Songkla University.
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Compliance with ethical standards: The authors declare that the works were done with formal permission from the relevant authority and the procedures were in accordance with the national laws.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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© 2021 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- In this issue
- Physiology and Ecology
- Experimental flooding modifies rhizosphere conditions, induces photoacclimation and promotes antioxidant activities in Rhizophora mucronata seedlings
- Taxonomy/Phylogeny and Biogeography
- Observation of Danish marine fungi: in memoriam of Dr. Jørgen Koch
- Systematics of Hypnea (Cystocloniaceae, Rhodophyta) from coastal North Carolina, with a first report of Calliblepharis saidana from the United States Atlantic Coast
- Identification of Gracilariaceae (Rhodophyta) of central Portugal by histological and genetic methods
- Arrival and proliferation of the invasive seaweed Rugulopteryx okamurae in NE Atlantic islands
- Chemistry and Applications
- Lipid characterization of 14 macroalgal species from Madeira Archipelago: implications for animal and human nutrition
- Seasonal patterns of growth, alginate content and block structure of the alien invader Sargassum muticum (Fucales, Ochrophyta) from the Atlantic coast of Morocco
- Reviewer Acknowledgement
- Reviewer acknowledgement Botanica Marina volume 64 (2021)
Artikel in diesem Heft
- Frontmatter
- In this issue
- Physiology and Ecology
- Experimental flooding modifies rhizosphere conditions, induces photoacclimation and promotes antioxidant activities in Rhizophora mucronata seedlings
- Taxonomy/Phylogeny and Biogeography
- Observation of Danish marine fungi: in memoriam of Dr. Jørgen Koch
- Systematics of Hypnea (Cystocloniaceae, Rhodophyta) from coastal North Carolina, with a first report of Calliblepharis saidana from the United States Atlantic Coast
- Identification of Gracilariaceae (Rhodophyta) of central Portugal by histological and genetic methods
- Arrival and proliferation of the invasive seaweed Rugulopteryx okamurae in NE Atlantic islands
- Chemistry and Applications
- Lipid characterization of 14 macroalgal species from Madeira Archipelago: implications for animal and human nutrition
- Seasonal patterns of growth, alginate content and block structure of the alien invader Sargassum muticum (Fucales, Ochrophyta) from the Atlantic coast of Morocco
- Reviewer Acknowledgement
- Reviewer acknowledgement Botanica Marina volume 64 (2021)
