Review
Environmental Sciences
Nur Hanis Zulkernain, Turkeswari Uvarajan, Chuck Chuan Ng
Summary: Phytoremediation is a cost-effective and environmentally friendly approach that utilizes plants to extract, stabilize, and transform various compounds, such as potentially toxic elements (PTEs), in the soil or water. Chelate-induced phytoremediation, which involves the use of chelating agents in soil remediation, has gained renewed interest. This review article summarizes the roles of chelating agents and the mechanisms of chelate-induced phytoremediation, as well as the impacts of chelating agents on PTEs uptake and plant growth and development.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Plant Sciences
Edith Cruzado-Tafur, Katarzyna Bierla, Lisard Torro, Joanna Szpunar
Summary: The study evaluated the capability of native plant species grown in polluted post-mining soils to accumulate metals for phytoremediation. Different native plants were found suitable for remediation of specific metals, with some being effective for both Cd and Zn. However, none of the studied plants were suitable for phytoremediation of Pb, Cu, As, and Ag.
Article
Environmental Sciences
Aigerim Mamirova, Almagul Baubekova, Valentina Pidlisnyuk, Elvira Shadenova, Leyla Djansugurova, Stefan Jurjanz
Summary: Paulownia tomentosa from Kazakhstan shows potential for phytoremediation of soils contaminated with organochlorine pesticides and toxic trace elements, with variable uptake and translocation behavior depending on the properties and concentrations of contaminants in soil.
Article
Engineering, Environmental
Elizabeth J. Lam, Brian F. Keith, Jaume Bech, Fernando A. Alvarez, Vicente Zetola, Luis H. Pereira, Italo L. Montofre
Summary: Many plant species can accumulate large amounts of metallic elements in their tissues, making them metal hyperaccumulators. This study proposes a new model to categorize plants according to their behavior related to soil concentration increase, using experimental measurements collected from different sources. The model provides a better understanding of plant effectiveness in phytoremediation processes of highly concentrated affected sites.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2022)
Article
Environmental Studies
Encarna Merlo, Antonio J. Mendoza-Fernandez, Esteban Salmeron-Sanchez, Fabian Martinez-Hernandez, Andrea Ortiz-ubeda, Juan Mota
Summary: The study focused on understanding the ionome of a characteristic dolomite species and its applications in terms of nutritional behavior and factors favoring rich and rare flora on dolomitic soils. It found that the species could accumulate potentially phytotoxic elements and transport them from roots to aerial parts of the plant, indicating potential bioindicator or phytoremediation capacity in the plant community.
Article
Chemistry, Analytical
Trias Mahmudiono, Yadolah Fakhri, Moayed Adiban, Batool Kazemi Siyahuee, Intissar Limam, Amirhossein Mahmoudi Zeh, Amirhossein Karimi, Ebrahim Baneshi, Sara Mohamadi
Summary: The study estimated the transfer factor (TF) of potential toxic elements (PTEs) in aloe vera gel and found that the TF values were less than 1. The 95th percentile concentration of PTEs in aloe vera gel in Iran was lower than the standard limits, indicating no health threat to consumers from aloe vera gel.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Israa Abdulwahab Al-Baldawi, Safaa Rasheed Yasin, Salwa Shamran Jasim, Siti Rozaimah Sheikh Abdullah, Asia Fadhile Almansoory, Nur'Izzati Ismail
Summary: Phytoremediation is a cost-effective and eco-friendly method for copper removal from polluted water. The study observed and recorded the removal of copper by two floating plant species, Azolla filiculoides and Lemna minor. Both plants demonstrated the ability to remove copper, with A. filiculoides showing a higher removal rate. The accumulation of copper negatively impacted the growth and morphology of L. minor, while the inner cell structure of A. filiculoides remained well organized.
Article
Environmental Sciences
Suseela Sreelekshmi, Mahadevan Harikrishnan, Sivasankaran Bijoy Nandan, Muraleedharan Nair Sreelakshmi, Joseph Philomina, Kariyil Veettil Neethu
Summary: This study investigated the accumulation of trace metals in sediments of mangrove ecosystems in Kerala state, their ecological risks, and the absorption, accumulation, and translocation of metals in different mangrove species. The findings revealed that certain trace metals exceeded the prescribed effects range median in sediments, posing a risk to biota. Additionally, certain mangrove species showed a high capacity for accumulating specific trace metals, such as chromium, cadmium, and lead.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Sivakoti Ramana, Awadhesh Kumar Tripathi, Ajay Kumar, Pradip Dey, Jayanta Kumar Saha, Ashok Kumar Patra
Summary: Furcraea foetida has the potential for phytoremediation of cadmium-contaminated soils, showing good tolerance to 200 mg/kg of cadmium in soil with accumulation mainly in the roots.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Sivakoti Ramana, Awadhesh Kumar Tripathi, Kollah Bharati, Amar Bahadur Singh, Ajay Kumar, Asha Sahu, Poonam Singh Rajput, Pradip Dey, Jayanta Kumar Saha, Ashok K. Patra
Summary: The study found that cotton plants have a certain tolerance to lead, but are not suitable as hyperaccumulators of lead. They mainly use an exclusion mechanism to cope with lead stress, and have very low bioconcentration and translocation efficiency for lead.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Review
Plant Sciences
Mohammed Alsafran, Kamal Usman, Bilal Ahmed, Muhammad Rizwan, Muhammad Hamzah Saleem, Hareb Al Jabri
Summary: This study discusses the stress and remediation strategies adopted by plants in response to PTEs, as well as the expressional changes induced by different PTEs on the plant proteome level. Comparative proteomics studies have led to significant progress in understanding plants' tolerance and bioaccumulation mechanisms for PTEs, optimizing phytoremediation of polluted environments.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Environmental Sciences
Raushan Kumar, Mohan Manu Thangaraju, Manoj Kumar, Sanjog Tarachand Thul, Vimal Chandra Pandey, Swati Yadav, Lal Singh, Sunil Kumar
Summary: The study demonstrated the phytoremediation potential of different bamboo species on a 5-year-old FA-dumped site near a thermal power plant. Organic inputs improved soil quality, with bamboo plants showing the ability to exclude or accumulate different trace elements. Biochemical parameters of bamboo leaves varied, indicating an adaptive response to environmental pollution.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Soil Science
Huimin Xiang, Ni Lan, Fugang Wang, Benliang Zhao, Hui Wei, Jiaen Zhang
Summary: Cadmium pollution has detrimental effects on plant growth, food safety, and human health. Phytoremediation, specifically rice intercropping with wetland plants, proves to be an efficient and eco-friendly approach to minimize cadmium accumulation in rice. This experiment showed that intercropping with Pontederia cordata and Canna indica significantly improved rice growth while reducing cadmium concentrations in both the rice and wetland plants. Rice intercropping with P. cordata performed better than intercropping with C. indica in reducing cadmium accumulation in rice.
Review
Biochemistry & Molecular Biology
Fang-Jie Zhao, Zhong Tang, Jia-Jun Song, Xin-Yuan Huang, Peng Wang
Summary: Agricultural soils are at risk of toxic metal contamination, which leads to excessive accumulation of these metals in food crops and poses significant risks to human health. Understanding the uptake, translocation, and detoxification processes of these toxic metals is essential for developing strategies to limit their accumulation in food. Various transporters are involved in the uptake and transport of toxic metals across different cellular compartments and plant tissues, and these processes are regulated at the transcriptional and posttranslational levels. Complexation with thiol-rich compounds and sequestration in vacuoles are common mechanisms for detoxification and limiting the translocation of toxic metals. Genes involved in toxic metal uptake, transport, and detoxification have been identified and can be targeted for genetic manipulation. Natural variations in toxic metal accumulation exist in crop germplasm, and marker-assisted breeding can be employed to develop low metal accumulation crops. Phytoremediation, using plants to extract and remove toxic metals from soil, is also possible but requires plants with high accumulation capacity. Knowledge gaps and future research needs are discussed.
Article
Plant Sciences
Muhammad Ilyas, Sakhawat Shah, Ya-Wen Lai, Jan Sher, Tao Bai, Fawad Zaman, Farkhanda Bibi, Monika Koul, Shabir Hussain Wani, Ali Majrashi, Hesham F. Alharby, Khalid Rehman Hakeem, Yong-Jian Wang, Shabir A. Rather
Summary: HM contamination and plant invasion can pose threats to local flora. This study found that invasive alien plants have an advantage over native plants in contaminated environments, and this advantage is related to their leaf structure and physiological traits.
FRONTIERS IN PLANT SCIENCE
(2022)