Comparison of the role of two Spartina species in terms of phytostabilization and bioaccumulation of metals in the estuarine sediment

Cambrollé, Jesús; Redondo‐Gómez, Susana; Mateos‐Naranjo, Enrique; Figueroa, M.E.

doi:10.1016/j.marpolbul.2008.08.008

Cited by 111 publications

(49 citation statements)

References 25 publications

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“…Similar behaviour was noted in Z. noltii in the present work, but for the other two studied species, the aboveground biomass presented lower metal values in comparison with the belowground biomass, which is in agreement with previous studies (Duarte et al 2010). Our results showed that the heavy metal concentrations were higher in the belowground organs (in agreement with Cambrollé et al 2008;Reboreda et al 2008;Duarte et al 2010) of both S. maritimus and S. maritima, which suggests the ability to accumulate heavy metals; in contrast, Z. noltii showed similar concentration levels in both aboveground and belowground organs but still accumulated metal. The three studied species presented higher belowground biomass values in the spring than the other seasons, and many of the heavy metal concentrations were higher in autumn and winter.…”

Section: Scirpus Maritimus Spartina Maritima Zostera Noltiisupporting

confidence: 93%

Halophytes as sources of metals in estuarine systems with low levels of contamination

Couto

Duarte

Barroso

et al. 2013

Functional Plant Biol.

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Abstract.Heavy metal concentrations present in the above-and beowground tissues of Scirpus maritimus L., Spartina maritima (Curtis) Fernald and Zostera noltii Hornem were analysed seasonally in the Mondego Estuary, Portugal. The sediments of the estuary were confirmed to contain only low concentrations of heavy metals. The belowground tissues of all three species showed higher heavy metal concentrations than the aboveground tissues. Although the sediments only contained low levels of contamination, because the area occupied by S. maritimus and Z. noltii was large, significant quantities of heavy metals were accumulated and exported to the surrounding water bodies. In contrast with observations of highly contaminated estuaries, it was found that in spite of the low level of contaminants in the sediments of the Mondego Estuary, aquatic vegetation functioned as a source of metals for nearby systems.

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Section: Scirpus Maritimus Spartina Maritima Zostera Noltiisupporting

confidence: 93%

Halophytes as sources of metals in estuarine systems with low levels of contamination

Couto

Duarte

Barroso

et al. 2013

Functional Plant Biol.

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“…A large portion of these toxic materials, including Cd, Cu, Pb and Zn, accumulate in sediments, including the soils of tidal marshes. Recent studies showed that some seagrasses and salt marsh plants are capable of extracting heavy metals from sediments and accumulating them in belowground or aboveground tissues (Weis and Weis 2004;Cambrolle et al 2008;Lewis and Devereux 2009). The processes and potential application of these aquatic halophytes merits much greater research and development.…”

Section: Halophytes As Cropsmentioning

confidence: 99%

Evolution of halophytes: multiple origins of salt tolerance in land plants

Flowers

Galal

Bromham

2010

Functional Plant Biol.

614

370

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Abstract. The evolution of salt tolerance is interesting for several reasons. First, since salt-tolerant plants (halophytes) employ several different mechanisms to deal with salt, the evolution of salt tolerance represents a fascinating case study in the evolution of a complex trait. Second, the diversity of mechanisms employed by halophytes, based on processes common to all plants, sheds light on the way that a plant's physiology can become adapted to deal with extreme conditions. Third, as the amount of salt-affected land increases around the globe, understanding the origins of the diversity of halophytes should provide a basis for the use of novel species in bioremediation and conservation. In this review we pose the question, how many times has salt tolerance evolved since the emergence of the land plants some 450-470 million years ago? We summarise the physiological mechanisms underlying salt-tolerance and provide an overview of the number and diversity of salt-tolerant terrestrial angiosperms (defined as plants that survive to complete their life cycle in at least 200 mM salt). We consider the evolution of halophytes using information from fossils and phylogenies. Finally, we discuss the potential for halophytes to contribute to agriculture and land management and ask why, when there are naturally occurring halophytes, it is proving to be difficult to breed salt-tolerant crops.

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“…For revegetation and remediation of salt-affected regions to develop sustainable agricultural practice, we also need to rely on halophytes (Peacock et al 2003 ). Previous studies also reported that some seagrasses and salt marsh plants have the ability to extract heavy metals from sediments (Cambrolle et al 2008 ;Lewis and Devereux 2009 ). Salt-tolerant plants also improve water conductance, soil fertility (Qadir et al 2008 ), and lower the water table (Barrett-Lennard 2002 ).…”

Section: Halophytes: Defi Nition and Classifi Cationmentioning

confidence: 99%

Salt Adaptation Mechanisms of Halophytes: Improvement of Salt Tolerance in Crop Plants

Joshi

Mangu

Bedre

et al. 2015

Elucidation of Abiotic Stress Signaling in Plants

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Soil salinity is one of the most serious environmental factors that affect crop productivity worldwide. Inevitable global climate change leading to rise in sea water level would exacerbate degradation of irrigation systems and contamination of ground water resources, which render conventional agricultural practices impossible due to the sensitivity of most crops to salinity. Breeding for development of salt-tolerant crop plants has been a major challenge due to the complexity and multigenic control of salt tolerance traits. Halophytes are capable of surviving and thriving under salt at concentrations as high as 5 g/L, by maintaining negative water potential. Physiological and molecular studies have suggested that halophytes, unlike glycophytes, have evolved mechanisms, such as ion homeostasis through ion extrusion and compartmentalization, osmotic adjustments, and antioxidant production for adaptation to salinity. Employment of integrated approaches involving different omics tools would amplify our understanding of the biology of stress response networks in the halophytes. Translation of the knowledge and resources generated from halophyte relatives of crop plants through functional genomics will lead to the development of new breeds of crops that are suitable for saline agriculture.

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Comparison of the role of two Spartina species in terms of phytostabilization and bioaccumulation of metals in the estuarine sediment

Cited by 111 publications

References 25 publications

Halophytes as sources of metals in estuarine systems with low levels of contamination

Halophytes as sources of metals in estuarine systems with low levels of contamination

Evolution of halophytes: multiple origins of salt tolerance in land plants

Salt Adaptation Mechanisms of Halophytes: Improvement of Salt Tolerance in Crop Plants

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