Soil Oxidation-Reduction in Wetlands and Its Impact on Plant Functioning
Soil flooding in wetlands is accompanied by changes in soil physical and chemical characteristics. These changes include the lowering of soil redox potential (Eh) leading to increasing demand for oxygen within the soil profile as well as production of soil phytotoxins that are by-products of soil re...
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| Format: | Article |
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MDPI AG
2012-07-01
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| Series: | Biology |
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| Online Access: | http://www.mdpi.com/2079-7737/1/2/196 |
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| author | S. R. Pezeshki R. D. DeLaune |
| author_facet | S. R. Pezeshki R. D. DeLaune |
| author_sort | S. R. Pezeshki |
| collection | DOAJ |
| description | Soil flooding in wetlands is accompanied by changes in soil physical and chemical characteristics. These changes include the lowering of soil redox potential (Eh) leading to increasing demand for oxygen within the soil profile as well as production of soil phytotoxins that are by-products of soil reduction and thus, imposing potentially severe stress on plant roots. Various methods are utilized for quantifying plant responses to reducing soil conditions that include measurement of radial oxygen transport, plant enzymatic responses, and assessment of anatomical/morphological changes. However, the chemical properties and reducing nature of soil environment in which plant roots are grown, including oxygen demand, and other associated processes that occur in wetland soils, pose a challenge to evaluation and comparison of plant responses that are reported in the literature. This review emphasizes soil-plant interactions in wetlands, drawing attention to the importance of quantifying the intensity and capacity of soil reduction for proper evaluation of wetland plant responses, particularly at the process and whole-plant levels. Furthermore, while root oxygen-deficiency may partially account for plant stress responses, the importance of soil phytotoxins, produced as by-products of low soil Eh conditions, is discussed and the need for development of methods to allow differentiation of plant responses to reduced or anaerobic soil conditions vs. soil phytotoxins is emphasized. |
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| format | Article |
| id | doaj.art-6be6a6b2fe6745328f6c7eaf37deffeb |
| institution | Directory Open Access Journal |
| issn | 2079-7737 |
| language | English |
| last_indexed | 2024-03-12T20:01:54Z |
| publishDate | 2012-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biology |
| spelling | doaj.art-6be6a6b2fe6745328f6c7eaf37deffeb2023-08-02T02:21:19ZengMDPI AGBiology2079-77372012-07-011219622110.3390/biology1020196Soil Oxidation-Reduction in Wetlands and Its Impact on Plant FunctioningS. R. PezeshkiR. D. DeLauneSoil flooding in wetlands is accompanied by changes in soil physical and chemical characteristics. These changes include the lowering of soil redox potential (Eh) leading to increasing demand for oxygen within the soil profile as well as production of soil phytotoxins that are by-products of soil reduction and thus, imposing potentially severe stress on plant roots. Various methods are utilized for quantifying plant responses to reducing soil conditions that include measurement of radial oxygen transport, plant enzymatic responses, and assessment of anatomical/morphological changes. However, the chemical properties and reducing nature of soil environment in which plant roots are grown, including oxygen demand, and other associated processes that occur in wetland soils, pose a challenge to evaluation and comparison of plant responses that are reported in the literature. This review emphasizes soil-plant interactions in wetlands, drawing attention to the importance of quantifying the intensity and capacity of soil reduction for proper evaluation of wetland plant responses, particularly at the process and whole-plant levels. Furthermore, while root oxygen-deficiency may partially account for plant stress responses, the importance of soil phytotoxins, produced as by-products of low soil Eh conditions, is discussed and the need for development of methods to allow differentiation of plant responses to reduced or anaerobic soil conditions vs. soil phytotoxins is emphasized.http://www.mdpi.com/2079-7737/1/2/196floodingphotosynthesisplant stresssoil redox potentialsoil phytotoxinswetlands |
| spellingShingle | S. R. Pezeshki R. D. DeLaune Soil Oxidation-Reduction in Wetlands and Its Impact on Plant Functioning Biology flooding photosynthesis plant stress soil redox potential soil phytotoxins wetlands |
| title | Soil Oxidation-Reduction in Wetlands and Its Impact on Plant Functioning |
| title_full | Soil Oxidation-Reduction in Wetlands and Its Impact on Plant Functioning |
| title_fullStr | Soil Oxidation-Reduction in Wetlands and Its Impact on Plant Functioning |
| title_full_unstemmed | Soil Oxidation-Reduction in Wetlands and Its Impact on Plant Functioning |
| title_short | Soil Oxidation-Reduction in Wetlands and Its Impact on Plant Functioning |
| title_sort | soil oxidation reduction in wetlands and its impact on plant functioning |
| topic | flooding photosynthesis plant stress soil redox potential soil phytotoxins wetlands |
| url | http://www.mdpi.com/2079-7737/1/2/196 |
| work_keys_str_mv | AT srpezeshki soiloxidationreductioninwetlandsanditsimpactonplantfunctioning AT rddelaune soiloxidationreductioninwetlandsanditsimpactonplantfunctioning |