Halophytes have potential as heavy metal phytoremediators: A comprehensive review

Caparrós, Pedro García; Öztürk, Münir; Gul, Alvina; Batool, Tuba Sharf; Pirasteh‐Anosheh, Hadi; Ünal, Bengü Türkyılmaz; Altay, Volkan; Toderich, Kristina

doi:10.1016/j.envexpbot.2021.104666

Cited by 60 publications

(21 citation statements)

References 120 publications

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“…Furthermore, these species can produce high amounts of biomass rich in lignocellulosic materials suitable for bioethanol production [26]. The high biomass production, combined with the high phytoextraction capacity, also makes these species very attractive for the phytoremediation of saline and heavy metal-contaminated soils [27]. Finally, several studies have demonstrated their suitability for the regreening of marginal areas to increase carbon sequestration and relieve soil erosion [28,29].…”

Section: Introductionmentioning

confidence: 99%

Recovery from Salinity and Drought Stress in the Perennial Sarcocornia fruticosa vs. the Annual Salicornia europaea and S. veneta

Calone

Mircea

González-Orenga

et al. 2022

Plants

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Current agricultural problems, such as the decline of freshwater and fertile land, foster saline agriculture development. Salicornia and Sarcocornia species, with a long history of human consumption, are ideal models for developing halophyte crops. A greenhouse experiment was set up to compare the response of the perennial Sarcocornia fruticosa and the two annual Salicornia europaea and S. veneta to 30 days of salt stress (watering with 700 mM NaCl) and water deficit (complete withholding of irrigation) separate treatments, followed by 15 days of recovery. The three species showed high tolerance to salt stress, based on the accumulation of ions (Na+, Cl−, Ca2+) in the shoots and the synthesis of organic osmolytes. These defence mechanisms were partly constitutive, as active ion transport to the shoots and high levels of glycine betaine were also observed in non-stressed plants. The three halophytes were sensitive to water stress, albeit S. fruticosa to a lesser extent. In fact, S. fruticosa showed a lower reduction in shoot fresh weight than S. europaea or S. veneta, no degradation of photosynthetic pigments, a significant increase in glycine betaine contents, and full recovery after the water stress treatment. The observed differences could be due to a better adaptation of S. fruticosa to a drier natural habitat, as compared to the two Salicornia species. However, a more gradual stress-induced senescence in the perennial S. fruticosa may contribute to greater drought tolerance in this species.

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Section: Introductionmentioning

confidence: 99%

Recovery from Salinity and Drought Stress in the Perennial Sarcocornia fruticosa vs. the Annual Salicornia europaea and S. veneta

Calone

Mircea

González-Orenga

et al. 2022

Plants

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“…do not fully meet the requirements of successful phytoremediation as most of these plants lack specialized anatomical features to extrude salts, with limited inclusion mechanisms. Instead, these plants have developed exclusion mechanisms with varying effectiveness at certain locations through the plant body, as shown in Figure 1 [40]. Most of these plants have limited exclusion mechanisms to prevent salts entering the shoot system or to exclude harmful ions to the root environment (a mechanism operating largely in Phoenix dactylifera (date-palm trees) [41] or accumulating salts in plant organs carrying little metabolic activities such as leaf petioles, stalks, and sheaths [16,42] (Figures S2, S3).…”

Section: Desalination Of Soilmentioning

confidence: 99%

Endophytes and Halophytes to Remediate the Industrial Wastewater and Saline Soils: Perspectives from Qatar

Yasseen¹,

Al‐Thani²

2022

Which Factors Contribute to Innovative Performance? A Case Study Applied to the Food and Beverage Industry

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“…do not fully meet the requirements of successful phytoremediation, as most of these plants lack specialized anatomical features to extrude salts, with limited inclusion mechanisms. Instead, these plants have developed exclusion mechanisms with varying effectiveness at certain locations through the plant body, as shown in Figure 1 [ 40 ]. Most of these plants have limited exclusion mechanisms to prevent salts entering the shoot system or to exclude harmful ions to the root environment (a mechanism operating largely in Phoenix dactylifera (date-palm trees) [ 41 ] or accumulating salts in plant organs carrying little metabolic activities, such as leaf petioles, stalks, and sheaths [ 16 , 42 ] ( Figures S2 and S3 ).…”

Section: Phytoremediation In Saline and Polluted Soilsmentioning

confidence: 99%

Endophytes and Halophytes to Remediate Industrial Wastewater and Saline Soils: Perspectives from Qatar

Yasseen

Al‐Thani

2022

Plants

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Many halophytes are considered to be salt hyperaccumulators, adopting ion extrusion and inclusion mechanisms. Such plants, with high aboveground biomass, may play crucial roles in saline habitats, including soil desalination and phytoremediation of polluted soils and waters. These plants cause significant changes in some of the soil’s physical and chemical properties; and have proven efficient in removing heavy metals and metabolizing organic compounds from oil and gas activities. Halophytes in Qatar, such as Halopeplis perfoliata, Salicornia europaea, Salsola soda, and Tetraena qatarensis, are shown here to play significant roles in the phytoremediation of polluted soils and waters. Microorganisms associated with these halophytes (such as endophytic bacteria) might boost these plants to remediate saline and polluted soils. A significant number of these bacteria, such as Bacillus spp. and Pseudomonas spp., are reported here to play important roles in many sectors of life. We explore the mechanisms adopted by the endophytic bacteria to promote and support these halophytes in the desalination of saline soils and phytoremediation of polluted soils. The possible roles played by endophytes in different parts of native plants are given to elucidate the mechanisms of cooperation between these native plants and the associated microorganisms.

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Halophytes have potential as heavy metal phytoremediators: A comprehensive review

Cited by 60 publications

References 120 publications

Recovery from Salinity and Drought Stress in the Perennial Sarcocornia fruticosa vs. the Annual Salicornia europaea and S. veneta

Recovery from Salinity and Drought Stress in the Perennial Sarcocornia fruticosa vs. the Annual Salicornia europaea and S. veneta

Endophytes and Halophytes to Remediate the Industrial Wastewater and Saline Soils: Perspectives from Qatar

Endophytes and Halophytes to Remediate Industrial Wastewater and Saline Soils: Perspectives from Qatar

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