Haloconduction as a remediation strategy: Capture and quantification of salts excreted by recretohalophytes

Yun, Kassandra; Koster, Sonja; Rutter, Allison; Zeeb, Barbara A.

doi:10.1016/j.scitotenv.2019.06.271

Cited by 13 publications

(11 citation statements)

References 21 publications

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“…When combined, excretion rates of S. pectinata can be described by eq 3. Yun et al 8 observed that recretohalophytes excreted more salts under a field setting, so a site-specific conversion factor of 10 was used. Based on field observations, S. pectinata generally begins to grow in early May and reaches a maximum height of approximately 100 cm by the beginning of August in southeastern ON, CAN.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The best-suited plants (i) have a high translocation capacity to move salts from the soil onto their leaf surfaces, (ii) consistently produce salt excretions, and (iii) are tall enough that wind action could actually transfer salts into the air. 7 One species that meets these criteria is Spartina pectinata, which grows to a height of ∼1 m and was studied by both Yun et al 8 and in preliminary studies by Litalien et al 14 While little is known regarding the emission factors for salt from the leaves of S. pectinata or recretohalophytes in general, studies on the emission of fungal spores from the leaf surfaces of plants using wind tunnels provide a valuable framework to study the phenomena. 15,16 Several models exist for the visualization of the atmospheric dispersal of particulates.…”

Section: ■ Introductionmentioning

confidence: 99%

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Development of a Model for the Dispersal of Salts from Recretohalophytes

Litalien

Raymond

Rutter

et al. 2020

ACS Earth Space Chem.

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A novel method for the remediation of salinized soils utilizes recretohalophytes, plants that secrete salts onto their leaf surfaces. Wind blows the excreted salts from the leaves, dispersing and diluting them over great distances. In this study, the first model was established to estimate the amount of salt that could be transferred from a given field site via haloconduction. Further, the model allows for the determination of the location and concentrations of deposited salts. Greenhouse and wind tunnel experiments were used to determine the excretion and salt emission rates of Spartina pectinata. Based on this data, a theoretical emission profile for S. pectinata at a salt-impacted field site in Bath, ON, was generated. AERMOD View modeling software was used to visualize the dispersal of the emitted salts. Finally, a field monitoring program was implemented to determine the actual chloride deposition rates and airborne concentrations using passive wet candles and a high-volume air sampler. Based on this model, approximately 180 kg/year of potassium chloride (KCl) salt could be displaced from the Bath site and deposited over an ∼70 km2 region while maintaining deposition concentrations well below background levels.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Development of a Model for the Dispersal of Salts from Recretohalophytes

Litalien

Raymond

Rutter

et al. 2020

ACS Earth Space Chem.

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“…Since halophytes plants bear capability to survive adverse conditions even combined stress factors, like salt stress and heavy metal stress, they can efficiently use in phytoremediation purposes (Wani et al, 2020). Information about their root growth and their altered RSA can contribute to our knowledge (Yun et al, 2019) and help us to use marginal lands for more crop yield. Investigating root salt avoidance or salt directed movements is important in Earth and also in Space conditions to unravel the aspects and background mechanisms of sodium derived plant growth direction movements (Muthert et al, 2020).…”

Section: Potential Application Of Halotropism In Agriculture and Othementioning

confidence: 99%

Halotropism: Phytohormonal Aspects and Potential Applications

Szepesi

2020

Front. Plant Sci.

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Halotropism is a sodium specific tropic movement of roots in order to obtain the optimal salt concentration for proper growth and development. Numerous results suggest that halotropic events are under the control and regulation of complex plant hormone pathway. This minireview collects some recent evidences about sodium sensing during halotropism and the hormonal regulation of halotropic responses in glycophytes. The precise hormonal mechanisms by which halophytes plant roots perceive salt stress and translate this perception into adaptive, directional growth forward increased salt concentrations are not well understood. This minireview aims to gather recently deciphered information about halotropism focusing potential hormonal aspects both in glycophytes and halophytes. Advances in our understanding of halotropic responses in different plant species could help these plants to be used for sustainable agriculture and other future applications.

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“…A recretohalophyte, this plant has specialized glands to excrete salt ions onto their leaf surface in order to maintain adequate osmotic potentials in the plant tissues. Thus, D. spicata can be used for phytoremediation of salt-impacted soils by the haloconduction (Yun et al 2019). In addition, D. spicata can be used as fodder in salt-affected agricultural lands, under applications of low-quality water rich in nutrients.…”

Section: Psammophyte Speciesmentioning

confidence: 99%

Ecophysiology and Uses of Halophytes in Diverse Habitats

Bueno

Cordovilla

2020

Handbook of Halophytes

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Climate change is decreasing global crop production and altering the balance of ecosystems worldwide, making it urgent to find alternative species that are not only resistant to drought and environmental salinity but also capable of developing in a great diversity of habitats in order to ease pressure on cropping systems and restore lands degraded by salt. Halophytes constitute a group of plants that can fulfill these demands, thanks their morphological, anatomical, physiological, biochemical, and genetic adaptations that enable them to survive in a wide variety of habitats (wetlands, deserts, or tropical and temperate zones). In this chapter, we summarize recently discovered ecophysiological mechanisms in a total of 19 halophytes divided according their respective habitats: xerohalophytes, psammophytes, and hydrohalophytes. We highlight adaptations that enable these plants to survive under stress conditions using many strategies, including phenotypic plasticity, salt excretion (salt glands, trichomes), saline dilution (succulent leaves), growth modulation (increased root/shoot ratio), stomatic and CO 2 resistance, tight transpiration control, water-use efficiency, Na + compartmentalization in the vacuole (through the Na + /H + antiporter of tonoplast), osmolyte

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Haloconduction as a remediation strategy: Capture and quantification of salts excreted by recretohalophytes

Cited by 13 publications

References 21 publications

Development of a Model for the Dispersal of Salts from Recretohalophytes

Development of a Model for the Dispersal of Salts from Recretohalophytes

Halotropism: Phytohormonal Aspects and Potential Applications

Ecophysiology and Uses of Halophytes in Diverse Habitats

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