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Chengatt AP, Sarath NG, A M S, Sebastian DP, George S. 6-Benzylaminopurine mediated augmentation of cadmium phytostabilization potential in Strobilanthes alternata. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2024; 26:1893-1913. [PMID: 38836518 DOI: 10.1080/15226514.2024.2360573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
This study unveiled the cadmium phytoremediation potential and its augmentation using 6-Benzylaminopurine in Strobilanthes alternata. Cadmium stress was provided by applying 250 mg/kg cadmium chloride in soil and 25 ppm of 6-BAP (25 ml) was administered to the plants as foliar spray. The results revealed high bioconcentration factor (BCF) (18.82 ± 0.54) and low translocation factor (TF) values (0.055 ± 0.002) for the plant based on which we strongly recommend S. alternata as a promising candidate for Cd phytoremediation. The phytostabilization potential of the plant was further enhanced by applying 6-BAP, which augmented its BCF to 22.09 ± 0.64 and reduced the TF to 0.038 ± 0.001. Cd toxicity caused a reduction of plant growth parameters, root volume, adaxial-abaxial stomatal indices, relative water content, tolerance index, moisture content, membrane stability index, and xylem vessel diameter in S. alternata. However, Cd + 6-BAP treated plants exhibited an increase of the same compared to Cd-treated plants. FTIR analysis of Cd + 6-BAP treated plants revealed increased deposition of hemicellulose, causing enhanced retention of Cd in the root xylem walls, which is largely responsible for increased phytostabilization of Cd. Therefore, 6-BAP application in S. alternata can be exploited to restore Cd-contaminated areas effectively.
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Affiliation(s)
- Akshaya Prakash Chengatt
- Department of Botany, St. Joseph's College (Autonomous) Devagiri, Kozhikode, Affiliated to University of Calicut, Kerala, India
| | - Nair G Sarath
- Department of Botany, Mar Athanasius College (Autonomous), Kothamangalam, Kerala, India
| | - Shackira A M
- Department of Botany, Sir Syed College, Kannur University, Kannur, Kerala, India
| | - Delse Parekkattil Sebastian
- Department of Botany, St. Joseph's College (Autonomous) Devagiri, Kozhikode, Affiliated to University of Calicut, Kerala, India
| | - Satheesh George
- Department of Botany, St. Joseph's College (Autonomous) Devagiri, Kozhikode, Affiliated to University of Calicut, Kerala, India
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Wang Y, Chen L, Li Z, Duan S, Zhang X, Fang J, Xiao Y. The role of iron-rich organic fertilizer in promoting the growth of Chinese cabbage and inhibiting the transformation of cadmium. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168430. [PMID: 37949134 DOI: 10.1016/j.scitotenv.2023.168430] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 10/27/2023] [Accepted: 11/06/2023] [Indexed: 11/12/2023]
Abstract
The issue of heavy metal pollution caused by human production and living activities is progressively worsening. This study explored the effect of iron-rich organic fertilizer on the growth, quality, and cadmium (Cd) absorption of Chinese cabbage under Cd stress. The results showed that iron-rich organic fertilizer could increase the soluble protein content and root length of Chinese cabbage. Meanwhile, it could change the form of Cd to inhibit the enrichment of Cd in Chinese cabbage. The alkali hydrolyzed nitrogen (AN), total potassium (TK), organic matter (OM), and moisture content (MC) of the Z3 treatment group (2 % ferrous sulfate heptahydrate) were significantly higher than those of other treatment groups. The microbial network of Z3 was more complex than the other three groups. PICRUSt analysis and correlation analysis showed that the genes related to protein synthesis (e.g., glutathione S-transferase, zinc and Cd transporter, outer membrane protein, ArsR family transcriptional regulator, catalase, etc.) can also promote microbial absorption. This study aims to provide theoretical insights into soil Cd pollution immobilization techniques.
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Affiliation(s)
- Ying Wang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Liang Chen
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Zhihuan Li
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Shuyang Duan
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Xuerong Zhang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Jun Fang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China.
| | - Yunhua Xiao
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China.
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Li Q, Guan C, Zhao Y, Duan X, Yang Z, Zhu J. Salicylic acid alleviates Zn-induced inhibition of growth via enhancing antioxidant system and glutathione metabolism in alfalfa. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 265:115500. [PMID: 37757624 DOI: 10.1016/j.ecoenv.2023.115500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 09/12/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023]
Abstract
Zinc (Zn) is considered as one of the heavy metal pollutants in soil affecting agriculture. Salicylic acid (SA) is an important phytohormone that can mitigate effects against various abiotic stresses in plants, however, its exploration to improve Zn stress tolerance in alfalfa plants is still elusive. Thus, in the present study, exogenous SA treatment was conducted on alfalfa plants under Zn stress. The effects of exogenous SA on the physiological effects of alfalfa plants and the expression levels related genes were studied. This study tested the biomass, relative water content, chlorophyll levels, photosynthetic capacity, proline and soluble sugar contents, detected the activity of antioxidant enzymes (such as peroxidase and superoxide dismutase), glutathione biosynthesis, and endogenous SA levels, and quantified the genes associated with the antioxidant system and glutathione metabolism-mediated Zn stress. The results showed that exogenous SA could elevate the physiological adaptability of alfalfa plants through enhancing photosynthesis, proline and soluble sugar levels, stimulating antioxidant system and glutathione metabolism, and inducing the transcription level of related genes, thereby diminishing oxidative stress, inhibiting excessive Zn accumulation of alfalfa plants, increasing tolerance to Zn stress, and reducing the toxicity of Zn. Collectively, the application of SA alleviates Zn toxicity in alfalfa plants. The findings gave first insights into the regulatory mechanism of the Zn stress tolerance of alfalfa by exogenous SA and this might have positive implications for managing other plants which are suffering Zn stress.
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Affiliation(s)
- Qian Li
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, China; State Key Laboratory of North China Crop Improvement and Regulation, Baoding, Hebei 071001, China
| | - Chunfeng Guan
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Yi Zhao
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, China
| | - Xiaoye Duan
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, China
| | - Zhihui Yang
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, China.
| | - Jiehua Zhu
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, China.
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Erfani H, Swetanshu, Singh P, Madhu NR, Jadoun S. Evaluation of the performance of the compost plant for optimal operational evaluation. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1271. [PMID: 37792105 DOI: 10.1007/s10661-023-11810-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 08/30/2023] [Indexed: 10/05/2023]
Abstract
Composting is a municipal solid waste management strategy that can reduce municipal waste mixtures to diminish the volume and weight of disposable materials, decrease leachate emissions, recycle resources, and reduce the costs required for waste disposal. Today, the wave of consumerism in the current world and the advancement of technology has led to producing diversified waste around the globe, so the growth rate of all countries, including Iran, is increasing dramatically. This research was studied from a practical point of view for the first time in Karaj. We used a method based on a meta-heuristic algorithm to analyze the data. The results of these studies show that units that are part of large industries have a greater environmental approach than other smaller food industries because most of the smaller food industries have environmental experts or other findings; an environmental group is considered costly and troublesome. Therefore, the present research focuses on the thorough assessment of a compost plant's operational performance to achieve maximum efficiency and effectiveness. Technical, environmental, and economic viewpoints are all included in the assessment's multidimensional approach. Moreover, this case study of the Karaj compost factor summarizes the effectiveness of the method based on a meta-heuristic algorithm adopted for waste management. Therefore, it can be said that the root of the existing problems concerning the proper management of food industry waste in Karaj is due to the lack of environmental experts in the industry.
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Affiliation(s)
- Hadi Erfani
- Department of Chemical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Swetanshu
- School of Biological and Life Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Pratichi Singh
- School of Biological and Life Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Nithar Ranjan Madhu
- Department of Zoology, Acharya Prafulla Chandra College, New Barrackpore, Kolkata, West Bengal, -700131, India
| | - Sapana Jadoun
- Departamento de Química, Facultad de Ciencias, Universidad de Tarapacá, Avda. General Velásquez, 1775, Arica, Chile.
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Mehmood S, Ahmed W, Mahmood M, Rizwan MS, Asghar RMA, Alatalo JM, Imtiaz M, Akmal M, Abdelrahman H, Ma J, Ali EF, Li W, Lee SS, Shaheen SM. Aquaculture sediments amended with biochar improved soil health and plant growth in a degraded soil. MARINE POLLUTION BULLETIN 2023; 191:114899. [PMID: 37027965 DOI: 10.1016/j.marpolbul.2023.114899] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/26/2023] [Accepted: 03/27/2023] [Indexed: 05/13/2023]
Abstract
Sustainable and safe management of aquaculture sediments is of great concern. Biochar (BC) and fishpond sediments (FPS) are rich in organic carbon and nutrients and thus can be used as soil amendments; however, it is not fully explored how the biochar amended fishpond sediments can affect soil properties/fertility and modulate plant physiological and biochemical changes, particularly under contamination stress. Therefore, a comprehensive investigation was carried out to explore the effects of FPS and BC-treated FPS (BFPS) on soil and on spinach (Spinacia oleracea L.) grown in chromium (Cr) contaminated soils. Addition of FPS and BFPS to soil caused an increase in nutrients content and reduced Cr levels in soil, which consequently resulted in a significant increase in plant biomass, chlorophyll pigments, and photosynthesis, over the control treatment. The most beneficial effect was observed with the BFPS applied at 35 %, which further increased the antioxidant enzymes (by 2.75-fold, at minimum), soluble sugars by 24.9 %, and upregulated the gene expression activities. However, the same treatment significantly decreased proline content by 74.9 %, Malondialdehyde by 65.6 %, H2O2 by 65.1 %, and Cr concentration in spinach root and shoot tissues. Moreover, the average daily intake analysis showed that BFPS (at 35 %) could effectively reduce human health risks associated with Cr consumption of leafy vegetables. In conclusion, these findings are necessary to provide guidelines for the reutilization of aquaculture sediments as an organic fertilizer and a soil amendment for polluted soils. However, more future field studies are necessary to provide guidelines and codes on aquaculture sediments reutilization as organic fertilizer and soil amendment for polluted soils, aiming for a more sustainable food system in China and globally, with extended benefits to the ecosystem and human.
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Affiliation(s)
- Sajid Mehmood
- Center for Eco-Environment Restoration Engineering of Hainan Province, School of Ecological and Environmental Sciences, Hainan University, Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou City, 570100, China
| | - Waqas Ahmed
- Center for Eco-Environment Restoration Engineering of Hainan Province, School of Ecological and Environmental Sciences, Hainan University, Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou City, 570100, China
| | - Mohsin Mahmood
- Center for Eco-Environment Restoration Engineering of Hainan Province, School of Ecological and Environmental Sciences, Hainan University, Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou City, 570100, China
| | - Muhammad Shahid Rizwan
- Cholistan Institute of Desert Studies, The Islamia University of Bahawalpur, 63100, Pakistan
| | | | - Juha M Alatalo
- Environmental Science Center, Qatar University, Doha, Qatar
| | - Muhammad Imtiaz
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan
| | - Muhammad Akmal
- Institute of Soil and Water Conversation, PMAS-Arid Agriculture University, Punjab, Pakistan
| | - Hamada Abdelrahman
- Cairo University, Faculty of Agriculture, Soil Science Department, Giza 12613, Egypt
| | - Jifu Ma
- School of Life Science, Yan'an University, Yan'an 716000, China
| | - Esmat F Ali
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Weidong Li
- Center for Eco-Environment Restoration Engineering of Hainan Province, School of Ecological and Environmental Sciences, Hainan University, Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou City, 570100, China.
| | - Sang Soo Lee
- Department of Environmental and Energy Engineering, Yonsei University, Wonju 26493, Republic of Korea.
| | - Sabry M Shaheen
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water and Waste-Management, Laboratory of Soil and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; King Abdulaziz University, Faculty of Meteorology, Environment, and Arid Land Agriculture, Department of Arid Land Agriculture, Jeddah 21589, Saudi Arabia; University of Kafrelsheikh, Faculty of Agriculture, Department of Soil and Water Sciences, 33516 Kafr El-Sheikh, Egypt.
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Barman F, Kundu R. Foliar application of selenium affecting pollen viability, grain chalkiness, and transporter genes in cadmium accumulating rice cultivar: A pot study. CHEMOSPHERE 2023; 313:137538. [PMID: 36521741 DOI: 10.1016/j.chemosphere.2022.137538] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/07/2022] [Accepted: 12/10/2022] [Indexed: 06/17/2023]
Abstract
Under Cadmium (Cd) stress, rice grain quality and quantity are compromised, affecting human health. Application of Selenium (Se) mitigating Cd stress in rice was already reported, but its role in rescuing Cd induced damage in the reproductive parts in rice plants has not been studied before. To investigate the underlying mechanism, Se mediated alleviation of Cd-stress induced damage to pollen viability, germination rate, and grain chalkiness were studied. A grain Cd accumulating rice genotype was selected and treated with 10 μM Cd and sprayed with 5 μM Se during tillering, elongating and heading stages. A significant reduction in pollen viability, germination percentage, and accumulation of higher amount of ROS in the reproductive parts were observed in Cd treated plants. However, Se supplementation (i.e. Cd + Se), decreased the ROS accumulation in anther, pistil, pollen and enhanced the pollen viability and germination percentage. Cd translocation was prevented from flag leaf to grains, under Se treatment. As a result, a significantly higher seed setting rate, and yield were observed. Additionally, Se improved grain nutrient content and grain quality. Therefore, the recent study suggests that the use of foliar spray of Se could be a cost-effective strategy to prevent Cd-induced yield loss and quality in rice.
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Affiliation(s)
- Falguni Barman
- Department of Botany, Centre of Advanced Studies, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Rita Kundu
- Department of Botany, Centre of Advanced Studies, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India.
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Jócsák I, Knolmajer B, Szarvas M, Rabnecz G, Pál-Fám F. Literature Review on the Effects of Heavy Metal Stress and Alleviating Possibilities through Exogenously Applied Agents in Alfalfa ( Medicago sativa L.). PLANTS (BASEL, SWITZERLAND) 2022; 11:2161. [PMID: 36015464 PMCID: PMC9414348 DOI: 10.3390/plants11162161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
Heavy metals (HMs) are among the most important toxic agents since they reach the soil through various routes and accumulate in the food chain. Therefore, HMs induce problems in soil integrity and in plant, animal, and human health. Alfalfa (Medicago sativa L.) is a significant crop worldwide, utilized in animal production. Furthermore, because of its nitrogen-absorbing ability via symbiotic strains of bacteria, it increases soil productivity. However, there are relatively few studies investigating the effects of HMs and their alleviation possibilities on alfalfa plants. Therefore, the goal of this review is to clarify the current state of research into HM-induced alterations in alfalfa and to determine the extent to which externally applied microorganisms and chemical compounds can mitigate the negative effects. The aim is to indicate areas of development towards further understanding of HM detoxification in alfalfa and to identify future research directions.
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Affiliation(s)
- Ildikó Jócsák
- Institute of Agronomy, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
| | - Bence Knolmajer
- Institute of Plant Protection, Georgikon Campus, Hungarian University of Agriculture and Life Sciences, Deák Ferenc Street 16, H-8360 Keszthely, Hungary
| | - Miklós Szarvas
- Institute of Agronomy, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
| | - Gyula Rabnecz
- Zorvet Ltd., Wlassics Gyula Street 58, H-1181 Budapest, Hungary
| | - Ferenc Pál-Fám
- Institute of Agronomy, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
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Raklami A, Meddich A, Pajuelo E, Marschner B, Heinze S, Oufdou K. Combined application of marble waste and beneficial microorganisms: toward a cost-effective approach for restoration of heavy metals contaminated sites. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:45683-45697. [PMID: 35147874 DOI: 10.1007/s11356-022-19149-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 02/06/2022] [Indexed: 06/14/2023]
Abstract
Heavy metal (HM) pollution and the need to preserve the environment have gathered increasing scientific attention. The immobilization of HMs into less-soluble, less mobile, and less toxic forms in addition to the improvement of Medicago sativa L. growth and HMs accumulation were evaluated after the application of marble waste (MW) and/or beneficial PGP rhizobacteria and mycorrhizae to the mining soil compost. A greenhouse assay was conducted to elucidate the influence of both amendment and beneficial microorganisms. The application of marble waste to the soil-compost resulted in decreasing the bioavailability of metals (Cu, Zn, Pb, and Cd), thus ameliorating the installation of the vegetal cover for 6 months of culture. Cultivation of M. sativa under 5% MW-amended soil for 6 months increased the shoot dry weight by almost twofold, while the inoculation with rhizobacteria-mycorrhizae combined with the application of 15% MW resulted in an improvement of 3.5-fold in case of shoot dry weight. In addition, the application of marble waste amendment or their combination with metallo-resistant bacteria resulted in decreasing HM accumulation leading to HM content below the threshold recommended for animal grazing. Thus, the application of amendments and beneficial microorganisms appeared to guarantee the safe cultivation of alfalfa for 6 months of culture. The dual combination amendments and beneficial microorganisms showed the good potential to restore HM polluted soils and could stand as a novel approach for restoration of HM-contaminated soils.
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Affiliation(s)
- Anas Raklami
- Laboratory of Microbial Biotechnologies, Agrosciences, and Environment (BioMAgE), Labeled Research Unit-CNRST N°4, Faculty of Sciences Semlalia, Cadi Ayyad University, PO Box 2390, Marrakech, Morocco.
- Laboratory of Agri-Food, Biotechnologies, and Valorization of Plant Bioresources (Agrobioval), Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, Morocco.
| | - Abdelilah Meddich
- Laboratory of Agri-Food, Biotechnologies, and Valorization of Plant Bioresources (Agrobioval), Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, Morocco
- Center of Agrobiotechnology and Bioengineering, Research Unit Labelled CNRST (Centre AgroBiotech-URL-CNRST-05), Cadi Ayyad University, 40000, Marrakech, Morocco
| | - Eloisa Pajuelo
- Department of Microbiology and Parasitology, University of Seville, PO Box 1095, 41080, Sevilla, Spain
| | - Bernd Marschner
- Soil Science/Soil Ecology, Geographicals Institute, Fakultät für Geowissenschaften, Ruhr-University Bochum, Universitaetsstr. 150, 44780, Bochum, Germany
| | - Stefanie Heinze
- Soil Science/Soil Ecology, Geographicals Institute, Fakultät für Geowissenschaften, Ruhr-University Bochum, Universitaetsstr. 150, 44780, Bochum, Germany
| | - Khalid Oufdou
- Laboratory of Microbial Biotechnologies, Agrosciences, and Environment (BioMAgE), Labeled Research Unit-CNRST N°4, Faculty of Sciences Semlalia, Cadi Ayyad University, PO Box 2390, Marrakech, Morocco
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Raklami A, Meddich A, Oufdou K, Baslam M. Plants-Microorganisms-Based Bioremediation for Heavy Metal Cleanup: Recent Developments, Phytoremediation Techniques, Regulation Mechanisms, and Molecular Responses. Int J Mol Sci 2022; 23:5031. [PMID: 35563429 PMCID: PMC9105715 DOI: 10.3390/ijms23095031] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/25/2022] [Accepted: 04/28/2022] [Indexed: 02/01/2023] Open
Abstract
Rapid industrialization, mine tailings runoff, and agricultural activities are often detrimental to soil health and can distribute hazardous metal(loid)s into the soil environment, with harmful effects on human and ecosystem health. Plants and their associated microbes can be deployed to clean up and prevent environmental pollution. This green technology has emerged as one of the most attractive and acceptable practices for using natural processes to break down organic contaminants or accumulate and stabilize metal pollutants by acting as filters or traps. This review explores the interactions between plants, their associated microbiomes, and the environment, and discusses how they shape the assembly of plant-associated microbial communities and modulate metal(loid)s remediation. Here, we also overview microbe-heavy-metal(loid)s interactions and discuss microbial bioremediation and plants with advanced phytoremediation properties approaches that have been successfully used, as well as their associated biological processes. We conclude by providing insights into the underlying remediation strategies' mechanisms, key challenges, and future directions for the remediation of metal(loid)s-polluted agricultural soils with environmentally friendly techniques.
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Affiliation(s)
- Anas Raklami
- Laboratory of Microbial Biotechnologies, Agrosciences, and Environment, Labeled Research Unit-CNRST N°4, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco; (A.R.); (K.O.)
| | - Abdelilah Meddich
- Center of Agrobiotechnology and Bioengineering, Research Unit Labelled CNRST (Centre Agro-Biotech URL-CNRST-05), “Physiology of Abiotic Stresses” Team, Cadi Ayyad University, Marrakesh 40000, Morocco;
- Laboratory of Agro-Food, Biotechnologies and Valorization of Plant Bioresources (AGROBIOVAL), Faculty of Science Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco
| | - Khalid Oufdou
- Laboratory of Microbial Biotechnologies, Agrosciences, and Environment, Labeled Research Unit-CNRST N°4, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco; (A.R.); (K.O.)
| | - Marouane Baslam
- Laboratory of Biochemistry, Faculty of Agriculture, Niigata University, Niigata 950-2181, Japan
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Physiological and Biochemical Behaviors of Date Palm Vitroplants Treated with Microbial Consortia and Compost in Response to Salt Stress. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10238665] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The main challenge of the agricultural sector is to develop new ecological technologies that increase the yields and the tolerance of crops to abiotic constraints, especially in arid areas. The objective of this study was to test the potential roles of biofertilizers, namely, arbuscular mycorrhizal fungi (AMF), a native AMF consortium (AMF1) and an exotic AMF strain (AMF2); plant growth-promoting rhizobacteria (PGPR); and compost (comp), applied separately or in combination, in improving the tolerance of date palm vitroplants to salt stress. Plants were grown under non-stressed (0 mM NaCl) or stressed conditions (120 and 240 mM NaCl). Salt stress negatively affected growth and physiological parameters. However, biofertilizers used alone or in combination increased these traits in either the presence or absence of salinity. The two tripartite combinations PGPR+AMF1+Comp and PGPR+AMF2+Comp efficiently increased plant height compared to the controls, with respective enhancements of 47% and 48% under non-stressed conditions (0 mM), 44% and 43% under 120 mM NaCl and 42% and 41% under 240 mM NaCl. Moreover, under 240 mM NaCl level, the PGPR, AMF1+Comp and PGPR+AMF1+Comp treatments improved the shoot dry weight by 128%, 122% and 113% respectively compared to the stressed control plants submitted to 240 mM NaCl. The tripartite combinations PGPR+AMF1/AMF2+Comp improved salt stress tolerance of plants by increasing plant growth, accumulation of osmotic adjustment compounds and antioxidant enzyme activity compared to control plants and the other treatments.
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