1
|
Singh AK, Srivastava AK, Johri P, Dwivedi M, Kaushal RS, Trivedi M, Upadhyay TK, Alabdallah NM, Ahmad I, Saeed M, Lakhanpal S. Odyssey of environmental and microbial interventions in maize crop improvement. FRONTIERS IN PLANT SCIENCE 2025; 15:1428475. [PMID: 39850212 PMCID: PMC11755104 DOI: 10.3389/fpls.2024.1428475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Accepted: 10/01/2024] [Indexed: 01/25/2025]
Abstract
Maize (Zea mays) is India's third-largest grain crop, serving as a primary food source for at least 30% of the population and sustaining 900 million impoverished people globally. The growing human population has led to an increasing demand for maize grains. However, maize cultivation faces significant challenges due to a variety of environmental factors, including both biotic and abiotic stresses. Abiotic stresses such as salinity, extreme temperatures, and drought, along with biotic factors like bacterial, fungal, and viral infections, have drastically reduced maize production and grain quality worldwide. The interaction between these stresses is complex; for instance, abiotic stress can heighten a plant's susceptibility to pathogens, while an overabundance of pests can exacerbate the plant's response to environmental stress. Given the complexity of these interactions, comprehensive studies are crucial for understanding how the simultaneous presence of biotic and abiotic stresses affects crop productivity. Despite the importance of this issue, there is a lack of comprehensive data on how these stress combinations impact maize in key agricultural regions. This review focuses on developing abiotic stress-tolerant maize varieties, which will be essential for maintaining crop yields in the future. One promising approach involves the use of Plant Growth-Promoting Rhizobacteria (PGPR), soil bacteria that colonize the rhizosphere and interact with plant tissues. Scientists are increasingly exploring microbial strategies to enhance maize's resistance to both biotic and abiotic stresses. Throughout the cultivation process, insect pests and microorganisms pose significant threats to maize, diminishing both the quantity and quality of the grain. Among the various factors causing maize degradation, insects are the most prevalent, followed by fungal infections. The review also delves into the latest advancements in applying beneficial rhizobacteria across different agroecosystems, highlighting current trends and offering insights into future developments under both normal and stress conditions.
Collapse
Affiliation(s)
- Alok Kumar Singh
- Indian Council of Agriculture Research (ICAR) – National Bureau of Agriculturally Important Microorganism, Mau, Uttar Pradesh, India
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Lucknow, India
| | - Alok Kumar Srivastava
- Indian Council of Agriculture Research (ICAR) – National Bureau of Agriculturally Important Microorganism, Mau, Uttar Pradesh, India
| | - Parul Johri
- Department of Biotechnology, Dr. Ambedkar Institute of Technology for Divyangjan (AITH), Kanpur, Uttar Pradesh, India
| | - Manish Dwivedi
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Lucknow, India
| | - Radhey Shyam Kaushal
- Department of Life Sciences, Parul Institute of Applied Sciences and Research and Development Cell, Parul University, Vadodara, Gujarat, India
| | - Mala Trivedi
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Lucknow, India
| | - Tarun Kumar Upadhyay
- Department of Life Sciences, Parul Institute of Applied Sciences and Research and Development Cell, Parul University, Vadodara, Gujarat, India
| | - Nadiyah M. Alabdallah
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
- Basic & Applied Scientific Research Centre, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Irfan Ahmad
- Department of Clinical Laboratory Sciences, College of Applied Medical Science, King Khalid University, Abha, Saudi Arabia
| | - Mohd Saeed
- Department of Biology, College of Sciences, University of Hail, Hail, Saudi Arabia
| | - Sorabh Lakhanpal
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
| |
Collapse
|
2
|
Kamal N, Qian C, Hao H, Wu J, Liu Z, Zhong X, Ghanem OM, Salem A, Orban Z, Elwakeel AE, Mahmoud SF, Said AF. Hybrid Pennisetum colonization by Bacillus megaterium BM18-2 labeled with green fluorescent protein (GFP) under Cd stress. Arch Microbiol 2025; 207:30. [PMID: 39786545 PMCID: PMC11717813 DOI: 10.1007/s00203-024-04228-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2024] [Revised: 12/23/2024] [Accepted: 12/24/2024] [Indexed: 01/12/2025]
Abstract
Researchers have reported that Bacillus megaterium BM18-2 reduces Cd toxicity in Hybrid Pennisetum, but understanding the interaction between plants and associated endophytes is crucial for understanding phytoremediation strategies under heavy metal stress. The current study aims to monitor the colonization patterns of GFP-labeled endophytic bacteria BM18-2 on Hybrid Pennisetum grass. Additionally, it will monitor Cd's effect on plant bacterial colonization. Confocal laser scanning microscopy of plant roots infected with gfp tagged BM18-2 revealed that the bacterium colonised root hairs and epidermal cells at the early stage of colonization, and over time, the bacteria penetrated to the internal tissues following their colonization of the stem and leaf. The roots, stems, and leaves of H. Pennisetum grown in Cd-contaminated soil contained a higher number of bacteria than those grown in normal soil. The result of Cd translocation indicated the condensation of heavy metals in the root cells and stem, while no Cd was found in the leaf. The study will also look for the enzymatic activity of bacteria BM18-2 and use Leadmium Green AM dye to track how Cd is taken up and moved through the plant. The enzymatic activity results showed that BM18-2 can produce catalase and amylase, but did not record any cellulase or lipase activity. As a result, the pattern of useful endophytic BM18-2 colonization through H. Pennisetum grass will aid in the application and maintenance of these bacteria in farming, and it presents new opportunities for the development of innovative strategies in the fields of agriculture and biotechnology.
Collapse
Affiliation(s)
- Nehal Kamal
- National Forage Breeding Innovation Base (JAAS), Nanjing, 210014, People's Republic of China.
- Department of Botany and Microbiology, Faculty of Science, Suez University, P.O. Box: 43221, Suez, Egypt.
| | - Chen Qian
- National Forage Breeding Innovation Base (JAAS), Nanjing, 210014, People's Republic of China
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China
- Key Laboratory for Crop and Animal Integrated Farming of Ministry of Agriculture and Rural Affairs, Nanjing, 210014, People's Republic of China
| | - Huanhuan Hao
- College of Agro-grassland Science, Nanjing Agricultural University, 210095, Nanjing, People's Republic of China
| | - Juanzi Wu
- National Forage Breeding Innovation Base (JAAS), Nanjing, 210014, People's Republic of China
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China
- Key Laboratory for Crop and Animal Integrated Farming of Ministry of Agriculture and Rural Affairs, Nanjing, 210014, People's Republic of China
| | - Zhiwei Liu
- National Forage Breeding Innovation Base (JAAS), Nanjing, 210014, People's Republic of China
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China
- Key Laboratory for Crop and Animal Integrated Farming of Ministry of Agriculture and Rural Affairs, Nanjing, 210014, People's Republic of China
| | - Xiaoxian Zhong
- National Forage Breeding Innovation Base (JAAS), Nanjing, 210014, People's Republic of China.
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China.
- Key Laboratory for Crop and Animal Integrated Farming of Ministry of Agriculture and Rural Affairs, Nanjing, 210014, People's Republic of China.
| | - Osama M Ghanem
- Soil and Water Department, Faculty of Agriculture, Suez Canal University, 41522, Ismailia, Egypt
| | - Ali Salem
- Civil Engineering Department, Faculty of Engineering, Minia University, Minya, Egypt.
- Structural Diagnostics and Analysis Research Group, Faculty of Engineering and Information Technology, University of Pécs, Pécs, Hungary.
| | - Zoltan Orban
- Structural Diagnostics and Analysis Research Group, Faculty of Engineering and Information Technology, University of Pécs, Pécs, Hungary
| | - Abdallah Elshawadfy Elwakeel
- Agricultural Engineering Department, Faculty of Agriculture and Natural Resources, Aswan University, Aswan, Egypt
| | - Samy F Mahmoud
- Department of Biotechnology, College of Science, Taif University, Taif city, Saudi Arabia
| | - Alaa F Said
- Agricultural Botany Department, Faculty of Agriculture, Suez Canal University, 41522, Ismailia, Egypt
| |
Collapse
|
3
|
Mao X, Ahmad B, Hussain S, Azeem F, Waseem M, Alhaj Hamoud Y, Shaghaleh H, Abeed AHA, Rizwan M, Yong JWH. Microbial assisted alleviation of nickel toxicity in plants: A review. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2025; 289:117669. [PMID: 39788037 DOI: 10.1016/j.ecoenv.2025.117669] [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: 10/30/2024] [Revised: 12/16/2024] [Accepted: 01/01/2025] [Indexed: 01/12/2025]
Abstract
Nickel (Ni) is required in trace amounts (less than 500 µg kg-1) in plants to regulate metabolic processes, the immune system, and to act as an enzymatic catalytic cofactor. Conversely, when nickel is present in high concentration, it is considered as a toxic substance. Excessive human nickel exposure occurs through ingestion, inhalation, and skin contact, ultimately leading to respiratory, cardiovascular, and chronic kidney diseases. Due to anthropogenic activities, the nickel concentrations in various environmental scenarios have progressively risen to levels as high as 26,000 ppm in soil and 0.2 mg L-1 in water; surpassing the established safety threshold limits of 100 ppm for soil and 0.005 ppm for surface water. Nickel is required by various plant species for facilitating biological processes; in the range of 0.01-5 µg g-1 (dry weight). When present in excess, nickel toxicity in plants (10-1000 mg kg-1 dry weight mass) causes many disrupted metabolic processes; leading to lower growth, altered development, hindered seed germination, chlorosis, and necrosis. To tackle any metal-linked pollution issues, various remediation approaches are employed to remove heavy metals (especially nickel) and metalloids including physicochemical, and biological methods. Based on literature, the physicochemical methods are not commonly used due to their costly nature and the potential for producing secondary pollutants. Interestingly, bioremediation is considered by many practitioners as an easy-to-handle, efficient, and cost-effective approach, encompassing techniques such as phytoremediation, bioleaching, bioreactors, green landforming, and bio-augmentation. Operationally, phytoremediation is widely utilized for cleaning up contaminated sites. To support the phytoremediative processes, numerous nickel hyperaccumulating plants have been identified; these species can absorb from their surroundings and store high concentrations of nickel (through various mechanisms) in their biomass, thereby helping to detoxify nickel-contaminated soils via phytoextraction. The microbe-assisted phytoremediation further optimizes the nickel detoxification processes by fostering beneficial interactions between microbes and the nickel-hyperaccumulators; promoting enhanced metal uptake, transformation, and sequestration. Microbe-assisted phytoremediation can be categorized into four subtypes: bacterial-assisted phytoremediation, cyanoremediation, mycorrhizal-assisted remediation, and rhizoremediation. These diverse approaches are likely to offer more effective and sustainable remediative strategy to ecologically restore the nickel-contaminated environments.
Collapse
Affiliation(s)
- Xinyu Mao
- College of Agricultural Science and Engineering, Hohai University, Nanjing 210098, China
| | - Bilal Ahmad
- Molecular, Cellular, and Developmental Biology, Kansas State University, Manhattan, KS 66506, USA
| | - Sabir Hussain
- Department of Environmental Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Farrukh Azeem
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Muhammad Waseem
- Department of Environmental Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Yousef Alhaj Hamoud
- College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
| | - Hiba Shaghaleh
- College of Environment, Hohai University, Nanjing 210098, China
| | - Amany H A Abeed
- Department of Botany and Microbiology, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Muhammad Rizwan
- Department of Environmental Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan.
| | - Jean Wan Hong Yong
- Department of Biosystems and Technology, Swedish University of Agricultural Sciences, Alnarp 23456, Sweden.
| |
Collapse
|
4
|
Laishram B, Devi OR, Dutta R, Senthilkumar T, Goyal G, Paliwal DK, Panotra N, Rasool A. Plant-microbe interactions: PGPM as microbial inoculants/biofertilizers for sustaining crop productivity and soil fertility. CURRENT RESEARCH IN MICROBIAL SCIENCES 2024; 8:100333. [PMID: 39835267 PMCID: PMC11743900 DOI: 10.1016/j.crmicr.2024.100333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2025] Open
Abstract
Plant-microbe interactions play pivotal roles in sustaining crop productivity and soil fertility, offering promising avenues for sustainable agricultural practices. This review paper explores the multifaceted interactions between plants and various microorganisms, highlighting their significance in enhancing crop productivity, combating pathogens, and promoting soil health. Understanding these interactions is crucial for harnessing their potential in agricultural systems to address challenges such as food security and environmental sustainability. Therefore, the introduction of beneficial microbes into agricultural ecosystems by bio-augmentation reduces the negative effects of intensive, non-sustainable agriculture on the environment, society, and economy, into the mechanisms underlying the application of plant growth promoting microbes as microbial inoculants/biofertilizers; their interactions, the factors influencing their dynamics, and the implications for agricultural practices, emerging technologies and strategies that leverage plant-microbe interactions for improving crop yields, soil fertility, and overall agricultural sustainability.
Collapse
Affiliation(s)
- Bibek Laishram
- Department of Agronomy, Assam Agricultural University, Jorhat 785013, Assam, India
| | - Okram Ricky Devi
- Department of Agronomy, Assam Agricultural University, Jorhat 785013, Assam, India
| | - Rinjumoni Dutta
- Department of Agronomy, Assam Agricultural University, Jorhat 785013, Assam, India
| | | | - Girish Goyal
- Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya, India
| | | | - Narinder Panotra
- Institute of Biotechnology, SKUAST Jammu, Jammu and Kashmir 180009, India
| | - Akhtar Rasool
- Research Center for Chemistry - National Research and Innovation Agency (BRIN), KST BJ Habibie, Building 452, Setu, Tangerang Selatan 15314, Indonesia
- Department of Biotechnology, Manav Rachna International Institute of Research and Studies, Faridabad, Haryana, India
| |
Collapse
|
5
|
Saravanan K, Vellingiri K, Kathirvel P. Screening of multi-metal tolerant plant growth promoting bacteria (PGPB) Stutzerimonas stutzeri WA4 and its assistance on phytoextraction of heavy metals (Cu, Ag and Pb). INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2024:1-21. [PMID: 39535150 DOI: 10.1080/15226514.2024.2427384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2024]
Abstract
In the current study, coal fly ash contaminated soil was collected in and around Mettur Thermal Power Station, Salem district, Tamil Nadu. The metal concentrations present in the coal fly ash soil samples were analyzed and also used for the isolation of bacteria. The isolates were screened for their multi-metal resistance against three heavy metals (Cu, Ag and Pb) and plant growth-promoting traits (siderophore, phosphate solubilization, IAA, cellulase, HCN, and ammonia production). Among the 12 isolates, the WA4 strain revealed promising results for both metal-resistant and plant growth-promoting activity. In the in vitro pot experiment, Spinacia oleracea (Palak), Red amaranth (Red spinach), Capsicum annum (Green chilly) and Solanum melongena (Brinjal) plants were grown in ash-contaminated soil treated with different concentrations of selected bacterial inoculum (25%, 50%, 75% and 100%) along with a control pot. The results of the study indicated that the ash-contaminated soil treated with bacterial inoculum distinctly increased the growth of plants when compared to untreated soil (control). Thus, the best-performing strain WA4 could be utilized as a good bio-stimulant for promoting the growth of selected plants in the re-vegetation programs of ash-contaminated soil.
Collapse
Affiliation(s)
- Koushika Saravanan
- Department of Microbial Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Kavya Vellingiri
- Department of Microbial Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Preethi Kathirvel
- Department of Microbial Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu, India
| |
Collapse
|
6
|
Faseela P, Veena M, Sen A, Anjitha KS, Aswathi KPR, Sruthi P, Puthur JT. Elicitors fortifies the plant resilience against metal and metalloid stress. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2024; 27:372-389. [PMID: 39491331 DOI: 10.1080/15226514.2024.2420328] [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: 11/05/2024]
Abstract
This review addresses plant interactions with HMs, emphasizing defence mechanisms and the role of chelating agents, antioxidants and various elicitor molecules in mitigating metal toxicity in plants. To combat soil contamination with HMs, chelate assisted phytoextraction using application of natural or synthetic aminopolycarboxylic acids is an effective strategy. Plants also employ diverse signaling pathways, including hormones, calcium, reactive oxygen species, nitric oxide, and Mitogen-Activated Protein Kinases influencing gene expression and defence mechanisms to counter HM stress. Phytohormones enhance the enzymatic and non-enzymatic antioxidant defence mechanism and the level of secondary metabolites in plants when exposed to HM stress. Also it activates genes responsible for DNA repair mechanism. In addition, the plant hormones can also regulate the activity of several transporters of HMs, thereby preventing their entry into the cell. Elicitor molecules regulate metal and metalloid absorption, sequestration and transport in plants. Combining of different elicitors like jasmonic acid, calcium, salicylic acid etc. effectively mitigates metal and metalloid stress in plants. Moreover, microbes including bacteria and fungi, offer eco-friendly and efficient solution for HM remediation. Understanding these elicitors, microbes and various signaling pathways is crucial for developing strategies to enhance plant resilience to metal and metalloid stress.
Collapse
Affiliation(s)
- Parammal Faseela
- Department of Botany, Korambayil Ahamed Haji Memorial Unity Women's College, Malappuram, Kerala, India
| | - Mathew Veena
- Plant Physiology and Biochemistry Division, Department of Botany, University of Calicut, C. U. Campus P.O, Malappuram, Kerala, India
| | - Akhila Sen
- Department of Botany, Mar Athanasius College, Ernakulam, Kerala, India
| | - K S Anjitha
- Plant Physiology and Biochemistry Division, Department of Botany, University of Calicut, C. U. Campus P.O, Malappuram, Kerala, India
| | - K P Raj Aswathi
- Plant Physiology and Biochemistry Division, Department of Botany, University of Calicut, C. U. Campus P.O, Malappuram, Kerala, India
| | | | - Jos T Puthur
- Plant Physiology and Biochemistry Division, Department of Botany, University of Calicut, C. U. Campus P.O, Malappuram, Kerala, India
| |
Collapse
|
7
|
Liu L, Quan S, Li L, Lei G, Li S, Gong T, Zhang Z, Hu Y, Yang W. Endophytic Bacteria Improve Bio- and Phytoremediation of Heavy Metals. Microorganisms 2024; 12:2137. [PMID: 39597526 PMCID: PMC11597072 DOI: 10.3390/microorganisms12112137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2024] [Revised: 10/15/2024] [Accepted: 10/18/2024] [Indexed: 11/29/2024] Open
Abstract
Currently, the problem of heavy metal pollution in China is becoming increasingly serious, which poses grave threats to the environment and human health. Owing to the non-biodegradability and toxicity of heavy metals, a more sustainable and ecological approach to remediate heavy metal pollution has always been a focus of attention for environmental researchers. In recent years, many scientists have found that phytoremediation aided by endophytes has high potential to remediate heavy metals owing to its low cost, effectiveness, environmental friendliness, and sustainability compared with physical and chemical methods. Indeed, the mechanism of interaction between endophytes, plants, and heavy metals in the soil is pivotal for plants to tolerate metal toxicity and thrive. In this review, we focus on the mechanism of how endophytic bacteria resist heavy metals, and the direct and indirect mechanisms employed by endophytic bacteria to promote the growth of plants and enhance phytoextraction and phytostabilization. Moreover, we also discuss the application of combinations of endophytic bacteria and plants that have been used to remediate heavy metal pollution. Finally, it is pointed out that although there have been many studies on phytoremediation systems that have been assisted by endophytes, large-scale field trials are important to deliver "real" results to evaluate and improve phytoremediation assisted with microorganisms in polluted natural environments.
Collapse
Affiliation(s)
- Ling Liu
- School of Life Sciences, Henan University, Kaifeng 475001, China;
| | - Shujing Quan
- Institute of Biology Co., Ltd., Henan Academy of Sciences, Zhengzhou 450008, China
| | - Liangliang Li
- Institute of Biology Co., Ltd., Henan Academy of Sciences, Zhengzhou 450008, China
| | - Gao Lei
- Institute of Biology Co., Ltd., Henan Academy of Sciences, Zhengzhou 450008, China
| | - Shanshan Li
- Institute of Biology Co., Ltd., Henan Academy of Sciences, Zhengzhou 450008, China
| | - Tao Gong
- Institute of Biology Co., Ltd., Henan Academy of Sciences, Zhengzhou 450008, China
| | - Zhilong Zhang
- Institute of Biology Co., Ltd., Henan Academy of Sciences, Zhengzhou 450008, China
| | - Yiliang Hu
- Institute of Biology Co., Ltd., Henan Academy of Sciences, Zhengzhou 450008, China
| | - Wenling Yang
- Institute of Biology Co., Ltd., Henan Academy of Sciences, Zhengzhou 450008, China
| |
Collapse
|
8
|
Pal S, Hait A, Mandal S, Roy A, Sar P, Kazy SK. Crude oil degrading efficiency of formulated consortium of bacterial strains isolated from petroleum-contaminated sludge. 3 Biotech 2024; 14:220. [PMID: 39247458 PMCID: PMC11377402 DOI: 10.1007/s13205-024-04066-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Accepted: 08/26/2024] [Indexed: 09/10/2024] Open
Abstract
Crude oil contamination has been widely recognized as a major environmental issue due to its various adverse effects. The use of inhabitant microorganisms (native to the contaminated sites) to detoxify/remove pollutants owing to their diverse metabolic capabilities is an evolving method for the removal/degradation of petroleum industry contaminants. The present study deals with the exploitation of native resident bacteria from crude oil contaminated site (oil exploration field) for bioremediation procedures. Fifteen (out of forty-four) bioremediation-relevant aerobic bacterial strains, belonging to the genera of Bacillus, Stenotrophomonas, Pseudomonas, Paenibacillus, Rhizobium, Burkholderia, and Franconibacter, isolated from crude oil containing sludge, have been selected for the present bioremediation study. Crude oil bioremediation performance of the selected bacterial consortium was assessed using microcosm-based studies. Stimulation of the microbial consortium with nitrogen or phosphorous led to the degradation of 60-70% of total petroleum hydrocarbon (TPH) in 0.25% and 0.5% crude oil experimental sets. CO2 evolution, indicative of crude oil mineralization, was evident with the highest evolution being 28.6 mg mL-1. Ecotoxicity of treated crude oil-containing media was assessed using plant seed germination assay, in which most of the 0.25% and 0.5% treated crude oil sets gave positive results thereby suggesting a reduction in crude oil toxicity.
Collapse
Affiliation(s)
- Siddhartha Pal
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur, West Bengal 713209 India
| | - Arpita Hait
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur, West Bengal 713209 India
| | - Sunanda Mandal
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur, West Bengal 713209 India
| | - Ajoy Roy
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur, West Bengal 713209 India
| | - Pinaki Sar
- Department of Bioscience and Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302 India
| | - Sufia K Kazy
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur, West Bengal 713209 India
| |
Collapse
|
9
|
Pal P, Pramanik K, Ghosh SK, Mondal S, Mondal T, Soren T, Maiti TK. Molecular and eco-physiological responses of soil-borne lead (Pb 2+)-resistant bacteria for bioremediation and plant growth promotion under lead stress. Microbiol Res 2024; 287:127831. [PMID: 39079267 DOI: 10.1016/j.micres.2024.127831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 06/25/2024] [Accepted: 07/01/2024] [Indexed: 08/22/2024]
Abstract
Lead (Pb) is the 2nd known portentous hazardous substance after arsenic (As). Being highly noxious, widespread, non-biodegradable, prolonged environmental presence, and increasing accumulation, particularly in arable land, Pb pollution has become a serious global health concern requiring urgent remediation. Soil-borne, indigenous microbes from Pb-polluted sites have evolved diverse resistance strategies, involving biosorption, bioprecipitation, biomineralization, biotransformation, and efflux mechanisms, under continuous exposure to Pb in human-impacted surroundings. These strategies employ a wide range of functional bioligands to capture Pb and render it inaccessible for leaching. Recent breakthroughs in molecular technology and understanding of lead resistance mechanisms offer the potential for utilizing microbes as biological tools in environmental risk assessment. Leveraging the specific affinity and sensitivity of bacterial regulators to Pb2+ ions, numerous lead biosensors have been designed and deployed worldwide to monitor Pb bioavailability in contaminated sites, even at trace levels. Besides, the ongoing degradation of croplands due to Pb pollution poses a significant challenge to meet the escalating global food demands. The accumulation of Pb in plant tissues jeopardizes both food safety and security while severely impacting plant growth. Exploring Pb-resistant plant growth-promoting rhizobacteria (PGPR) presents a promising sustainable approach to agricultural practices. The active associations of PGPR with host plants have shown enhancements in plant biomass and stress alleviation under Pb influence. They thus serve a dual purpose for plants grown in Pb-contaminated areas. This review aims to offer a comprehensive understanding of the role played by Pb-resistant soil-borne indigenous bacteria in expediting bioremediation and improving the growth of Pb-challenged plants essential for potential field application, thus broadening prospects for future research and development.
Collapse
Affiliation(s)
- Priyanka Pal
- Microbiology Laboratory, CAS, Department of Botany, Burdwan University, Burdwan, West Bengal 713104, India
| | - Krishnendu Pramanik
- Department of Botany, Cooch Behar Panchanan Barma University, Panchanan Nagar, Vivekananda Street, Cooch Behar, West Bengal 736101, India
| | - Sudip Kumar Ghosh
- Microbiology Laboratory, CAS, Department of Botany, Burdwan University, Burdwan, West Bengal 713104, India
| | - Sayanta Mondal
- Microbiology Laboratory, CAS, Department of Botany, Burdwan University, Burdwan, West Bengal 713104, India
| | - Tanushree Mondal
- Microbiology Laboratory, CAS, Department of Botany, Burdwan University, Burdwan, West Bengal 713104, India
| | - Tithi Soren
- Microbiology Laboratory, CAS, Department of Botany, Burdwan University, Burdwan, West Bengal 713104, India
| | - Tushar Kanti Maiti
- Microbiology Laboratory, CAS, Department of Botany, Burdwan University, Burdwan, West Bengal 713104, India.
| |
Collapse
|
10
|
Khatoon Z, Orozco-Mosqueda MDC, Santoyo G. Microbial Contributions to Heavy Metal Phytoremediation in Agricultural Soils: A Review. Microorganisms 2024; 12:1945. [PMID: 39458255 PMCID: PMC11509225 DOI: 10.3390/microorganisms12101945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2024] [Revised: 09/15/2024] [Accepted: 09/24/2024] [Indexed: 10/28/2024] Open
Abstract
Phytoremediation is a sustainable technique that employs plants to reinforce polluted environments such as agroecosystems. In recent years, new strategies involving the plant microbiome as an adjuvant in remediation processes have been reported. By leveraging this microbial assistance to remediate soils contaminated with heavy metals such As, Pb, Cd, Hg, and Cr, plants can sequester, degrade, or stabilize contaminants more efficiently. Remarkably, some plant species are known for their hyper-accumulative traits in synergy with their microbial partners and can successfully mitigate heavy metal pollutants. This sustainable biotechnology based on plant-microbe associations not only aids in environmental cleanup but also enhances biodiversity, improves soil structure, and promotes plant growth and health, making it a promising solution for addressing agro-pollution challenges worldwide. The current review article emphasizes the potential of synergistic plant-microbe interactions in developing practical and sustainable solutions for heavy metal remediation in agricultural systems, which are essential for food security.
Collapse
Affiliation(s)
- Zobia Khatoon
- Institute of Chemical and Biological Research, Universidad Michoacana de San Nicolas de Hidalgo, Morelia 58030, Mexico
| | | | - Gustavo Santoyo
- Institute of Chemical and Biological Research, Universidad Michoacana de San Nicolas de Hidalgo, Morelia 58030, Mexico
| |
Collapse
|
11
|
Mukherjee P, Dutta J, Roy M, Thakur TK, Mitra A. Plant growth-promoting rhizobacterial secondary metabolites in augmenting heavy metal(loid) phytoremediation: An integrated green in situ ecorestorative technology. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:55851-55894. [PMID: 39251536 DOI: 10.1007/s11356-024-34706-8] [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: 02/10/2022] [Accepted: 11/17/2022] [Indexed: 09/11/2024]
Abstract
In recent times, increased geogenic and human-centric activities have caused significant heavy metal(loid) (HM) contamination of soil, adversely impacting environmental, plant, and human health. Phytoremediation is an evolving, cost-effective, environment-friendly, in situ technology that employs indigenous/exotic plant species as natural purifiers to remove toxic HM(s) from deteriorated ambient soil. Interestingly, the plant's rhizomicrobiome is pivotal in promoting overall plant nutrition, health, and phytoremediation. Certain secondary metabolites produced by plant growth-promoting rhizobacteria (PGPR) directly participate in HM bioremediation through chelation/mobilization/sequestration/bioadsorption/bioaccumulation, thus altering metal(loid) bioavailability for their uptake, accumulation, and translocation by plants. Moreover, the metallotolerance of the PGPR and the host plant is another critical factor for the successful phytoremediation of metal(loid)-polluted soil. Among the phytotechniques available for HM remediation, phytoextraction/phytoaccumulation (HM mobilization, uptake, and accumulation within the different plant tissues) and phytosequestration/phytostabilization (HM immobilization within the soil) have gained momentum in recent years. Natural metal(loid)-hyperaccumulating plants have the potential to assimilate increased levels of metal(loid)s, and several such species have already been identified as potential candidates for HM phytoremediation. Furthermore, the development of transgenic rhizobacterial and/or plant strains with enhanced environmental adaptability and metal(loid) uptake ability using genetic engineering might open new avenues in PGPR-assisted phytoremediation technologies. With the use of the Geographic Information System (GIS) for identifying metal(loid)-impacted lands and an appropriate combination of normal/transgenic (hyper)accumulator plant(s) and rhizobacterial inoculant(s), it is possible to develop efficient integrated phytobial remediation strategies in boosting the clean-up process over vast regions of HM-contaminated sites and eventually restore ecosystem health.
Collapse
Affiliation(s)
- Pritam Mukherjee
- Department of Oceanography, Techno India University, West Bengal, EM 4/1 Sector V, Salt Lake, Kolkata, 700091, West Bengal, India.
| | - Joystu Dutta
- Department of Environmental Science, University Teaching Department, Sant Gahira Guru University, Ambikapur, 497001, Chhattisgarh, India
| | - Madhumita Roy
- Department of Microbiology, Bose Institute, P-1/12, CIT Road, Scheme VIIM, Kankurgachi, Kolkata, 700054, West Bengal, India
| | - Tarun Kumar Thakur
- Department of Environmental Science, Indira Gandhi National Tribal University, Amarkantak, 484886, Madhya Pradesh, India
| | - Abhijit Mitra
- Department of Marine Science, University of Calcutta, 35 B. C. Road, Kolkata, 700019, West Bengal, India
| |
Collapse
|
12
|
Gol-Soltani M, Ghasemi-Fasaei R, Ronaghi A, Zarei M, Zeinali S, Haderlein SB. Natural solution for the remediation of multi-metal contamination: application of natural amino acids, Pseudomonas fluorescens and Micrococcus yunnanensis to increase the phytoremediation efficiency. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2024; 26:2021-2033. [PMID: 38949066 DOI: 10.1080/15226514.2024.2372688] [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: 07/02/2024]
Abstract
Natural amino acids (NAA) have been rarely investigated as chelators, despite their ability to chelate heavy metals (HMs). In the present research, the effects of extracted natural amino acids, as a natural and environmentally friendly chelate agent and the inoculation of Pseudomonas fluorescens (PF) and Micrococcus yunnanensis (MY) bacteria were investigated on some responses of quinoa in a soil polluted with Pb, Ni, Cd, and Zn. Inoculation of PGPR bacteria enhanced plant growth and phytoremediation efficiency. Pb and Cd were higher in quinoa roots, while Ni and Zn were higher in the shoots. The highest efficiencies were observed with NAA treatment and simultaneous inoculation of PF and MY bacteria for Ni, Cd, Pb, and Zn. The highest values of phytoremediation efficiency and uptake efficiency of Ni, Cd, Pb, and Zn were 21.28, 19.11, 14.96 and 18.99 μg g-1, and 31.52, 60.78, 51.89, and 25.33 μg g-1, respectively. Results of present study well demonstrated NAA extracted from blood powder acted as strong chelate agent due to their diversity in size, solubilizing ability, abundant functional groups, and potential in the formation of stable complexes with Ni, Cd, Pb, and Zn, increasing metal availability in soil and improving phytoremediation efficiency in quinoa.
Collapse
Affiliation(s)
| | - Reza Ghasemi-Fasaei
- Department of Soil Science, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Abdolmajid Ronaghi
- Department of Soil Science, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Mehdi Zarei
- Department of Soil Science, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Sedigheh Zeinali
- Department of Nanochemical Engineering, Shiraz University, Shiraz, Iran
| | - Stefan B Haderlein
- Department of Environmental Mineralogy, Center for Applied Geosciences, University of Tübingen, Tübingen, Germany
| |
Collapse
|
13
|
Gamalero E, Glick BR. Use of plant growth-promoting bacteria to facilitate phytoremediation. AIMS Microbiol 2024; 10:415-448. [PMID: 38919713 PMCID: PMC11194615 DOI: 10.3934/microbiol.2024021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 05/31/2024] [Accepted: 06/04/2024] [Indexed: 06/27/2024] Open
Abstract
Here, phytoremediation studies of toxic metal and organic compounds using plants augmented with plant growth-promoting bacteria, published in the past few years, were summarized and reviewed. These studies complemented and extended the many earlier studies in this area of research. The studies summarized here employed a wide range of non-agricultural plants including various grasses indigenous to regions of the world. The plant growth-promoting bacteria used a range of different known mechanisms to promote plant growth in the presence of metallic and/or organic toxicants and thereby improve the phytoremediation ability of most plants. Both rhizosphere and endophyte PGPB strains have been found to be effective within various phytoremediation schemes. Consortia consisting of several PGPB were often more effective than individual PGPB in assisting phytoremediation in the presence of metallic and/or organic environmental contaminants.
Collapse
Affiliation(s)
- Elisa Gamalero
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale T. Michel 11, Alessandria, 15121, Italy
| | - Bernard R. Glick
- Department of Biology, University of Waterloo, Waterloo, ON, Canada N2L 3G1
| |
Collapse
|
14
|
Zainab N, Glick BR, Bose A, Amna, Ali J, Rehman FU, Paker NP, Rengasamy K, Kamran MA, Hayat K, Munis MFH, Sultan T, Imran M, Chaudhary HJ. Deciphering the mechanistic role of Bacillus paramycoides (PM51) and Bacillus tequilensis (PM52) in bio-sorption and phyto-assimilation of Cadmium via Linum usitatissimum L. Seedlings. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 211:108652. [PMID: 38723488 DOI: 10.1016/j.plaphy.2024.108652] [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: 12/28/2023] [Revised: 04/09/2024] [Accepted: 04/19/2024] [Indexed: 05/26/2024]
Abstract
Three Cd2+ resistant bacterium's minimal inhibition concentrations were assessed and their percentages of Cd2+ accumulation were determined by measurements using an atomic absorption spectrophotometer (AAS). The results revealed that two isolates Bacillus paramycoides (PM51) and Bacillus tequilensis (PM52), identified by 16S rDNA gene sequencing, showed a higher percentage of Cd2+ accumulation i.e., 83.78% and 81.79%, respectively. Moreover, both novel strains can tolerate Cd2+ levels up to 2000 mg/L isolated from district Chakwal. Amplification of the czcD, nifH, and acdS genes was also performed. Batch bio-sorption studies revealed that at pH 7.0, 1 g/L of biomass, and an initial 150 mg/L Cd2+ concentration were the ideal bio-sorption conditions for Bacillus paramycoides (PM51) and Bacillus tequilensis (PM52). The experimental data were fit to Langmuir isotherm measurements and Freundlich isotherm model R2 values of 0.999 for each of these strains. Bio sorption processes showed pseudo-second-order kinetics. The intra-diffusion model showed Xi values for Bacillus paramycoides (PM51) and Bacillus tequilensis (PM52) of 2.26 and 2.23, respectively. Different surface ligands, was investigated through Fourier-transformation infrared spectroscopy (FTIR). The scanning electron microscope SEM images revealed that after Cd2+ adsorption, the cells of both strains became thick, adherent, and deformed. Additionally, both enhanced Linum usitatissimum plant seed germination under varied concentrations of Cd2+ (0 mg/L, 250 mg/L,350 mg/L, and 500 mg/L). Current findings suggest that the selected strains can be used as a sustainable part of bioremediation techniques.
Collapse
Affiliation(s)
- Nida Zainab
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Bernard R Glick
- Department of Biology, University of Water Loo, Ontario, Canada
| | - Arpita Bose
- Department of Biology Washington University in St. Louis (WUSTL), United States
| | - Amna
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan; Department of Botany, Rawalpindi Women University, 6th Road Sattellite Town, Rawalpindi, Pakistan
| | - Javed Ali
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Fazal Ur Rehman
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan; Tasmanian Institute of Agriculture, New Town Research Laboratories, University of Tasmania, Tasmania, Australia
| | - Najeeba Parre Paker
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | | | - Muhammad Aqeel Kamran
- College of Environmental and Resource Sciences, Zhejiang University Hangzhou China, China
| | - Kashif Hayat
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | | | - Tariq Sultan
- Land Resource Research Institute, NARC, Islamabad, Pakistan
| | - Muhammad Imran
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan; Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
| | | |
Collapse
|
15
|
Huang Y, Liu T, Liu J, Xiao X, Wan Y, An H, Luo X, Luo S. Exceptional anti-toxic growth of water spinach in arsenic and cadmium co-contaminated soil remediated using biochar loaded with Bacillus aryabhattai. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:133966. [PMID: 38452681 DOI: 10.1016/j.jhazmat.2024.133966] [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: 01/12/2024] [Revised: 02/14/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024]
Abstract
Functionalized biochars are crucial for simultaneous soil remediation and safe agricultural production. However, a comprehensive understanding of the remediation mechanism and crop safety is imperative. In this work, the all-in-one biochars loaded with a Bacillus aryabhattai (B10) were developed via physisorption (BBC) and sodium alginate embedding (EBC) for simultaneous toxic As and Cd stabilization in soil. The bacteria-loaded biochar composites significantly decreased exchangeable As and Cd fractions in co-contaminated soil, with enhanced residual fractions. Heavy metal bioavailability analysis showed a maximum CaCl2-As concentration decline of 63.51% and a CaCl2-Cd decline of 50.96%. At a 3% dosage of composite, rhizosphere soil showed improved organic matter, cation exchange capacity, and enzyme activity. The aboveground portion of water spinach grown in pots was edible, with final As and Cd contents (0.347 and 0.075 mg·kg⁻¹, respectively) meeting food safety standards. Microbial analysis revealed the composite's influence on the rhizosphere microbial community, favoring beneficial bacteria and reducing plant pathogenic fungi. Additionally, it increased functional microorganisms with heavy metal-resistant genes, limiting metal migration in plants and favoring its growth. Our research highlights an effective strategy for simultaneous As and Cd immobilization in soil and inhibition of heavy metal accumulation in vegetables.
Collapse
Affiliation(s)
- Yutian Huang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Prevention Control and Resource Reuse, National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Ting Liu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Prevention Control and Resource Reuse, National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang 330063, PR China.
| | - Jie Liu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Prevention Control and Resource Reuse, National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Xiao Xiao
- Key Laboratory of Jiangxi Province for Persistent Pollutants Prevention Control and Resource Reuse, National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Yuke Wan
- Key Laboratory of Jiangxi Province for Persistent Pollutants Prevention Control and Resource Reuse, National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Huanhuan An
- Key Laboratory of Jiangxi Province for Persistent Pollutants Prevention Control and Resource Reuse, National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Xubiao Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Prevention Control and Resource Reuse, National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang 330063, PR China; Key laboratory of Jiangxi province for agricultural environmental pollution prevention and control in red soil hilly region, School of life sciences, Jinggangshan University, Ji'an 343009, PR China
| | - Shenglian Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Prevention Control and Resource Reuse, National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| |
Collapse
|
16
|
Ding S, Liang Y, Wang M, Hu R, Song Z, Xu X, Zheng L, Shen Z, Chen C. Less is more: A new strategy combining nanomaterials and PGPB to promote plant growth and phytoremediation in contaminated soil. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:134110. [PMID: 38522194 DOI: 10.1016/j.jhazmat.2024.134110] [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: 01/10/2024] [Revised: 02/28/2024] [Accepted: 03/21/2024] [Indexed: 03/26/2024]
Abstract
Novel combination strategies of nanomaterials (NMs) and plant growth-promoting bacteria (PGPB) may facilitate soil remediation and plant growth. However, the efficiency of the NM-PGPB combination and interactions among NMs, PGPB, and plants are still largely unknown. We used multiwalled carbon nanotubes (MWCNTs) and zero-valent iron (nZVI) combined with Bacillus sp. PGP5 to enhance the phytoremediation efficiency of Solanum nigrum on heavy metal (HM)-contaminated soil. The NM-PGPB combination showed the best promoting effect on plant growth, which also had synergistic effects on the bioaccumulation of HMs in S. nigrum. The MWCNT-PGP5 combination increased the Cd, Pb, and Zn removal efficiency of S. nigrum by 62.03%, 69.44%, and 61.31%, respectively. The underlining causes of improved plant growth and phytoremediation by NMs-PGPB combination were further elucidated. NM application promoted PGPB survival in soil. Compared with each single application, the combined application minimized disturbance to plant transcription levels and rhizosphere microbial community, resulting in the best performance on soil remediation and plant growth. The NM-PGPB-induced changes in the microbial community and root gene expression were necessary for plant growth promotion. This work reveals the "less is more" advantage of the NM-PGPB combination in soil remediation, providing a new strategy for soil management.
Collapse
Affiliation(s)
- Shifeng Ding
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yinping Liang
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Mingshuo Wang
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Ruoning Hu
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhengguo Song
- Department of Materials and Environmental Engineering, Shantou University, Shantou 515063, Guangdong, China
| | - Xiaohong Xu
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Luqing Zheng
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; Jiangsu Collaborative Innovation Centre for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhenguo Shen
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; Jiangsu Collaborative Innovation Centre for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing 210095, China
| | - Chen Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; Jiangsu Collaborative Innovation Centre for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing 210095, China.
| |
Collapse
|
17
|
Žaltauskaitė J, Meištininkas R, Dikšaitytė A, Degutytė-Fomins L, Mildažienė V, Naučienė Z, Žūkienė R, Koga K. Heavy fuel oil-contaminated soil remediation by individual and bioaugmentation-assisted phytoremediation with Medicago sativa and with cold plasma-treated M. sativa. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:30026-30038. [PMID: 38594559 DOI: 10.1007/s11356-024-33182-4] [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: 07/19/2023] [Accepted: 03/28/2024] [Indexed: 04/11/2024]
Abstract
Developing an optimal environmentally friendly bioremediation strategy for petroleum products is of high interest. This study investigated heavy fuel oil (HFO)-contaminated soil (4 and 6 g kg-1) remediation by individual and combined bioaugmentation-assisted phytoremediation with alfalfa (Medicago sativa L.) and with cold plasma (CP)-treated M. sativa. After 14 weeks of remediation, HFO removal efficiency was in the range between 61 and 80% depending on HFO concentration and remediation technique. Natural attenuation had the lowest HFO removal rate. As demonstrated by growth rate and biomass acquisition, M. sativa showed good tolerance to HFO contamination. Cultivation of M. sativa enhanced HFO degradation and soil quality improvement. Bioaugmentation-assisted phytoremediation was up to 18% more efficient in HFO removal through alleviated HFO stress to plants, stimulated plant growth, and biomass acquisition. Cold plasma seed treatment enhanced HFO removal by M. sativa at low HFO contamination and in combination with bioaugmentation it resulted in up to 14% better HFO removal compared to remediation with CP non-treated and non-bioaugmented M. sativa. Our results show that the combination of different remediation techniques is an effective soil rehabilitation strategy to remove HFO and improve soil quality. CP plant seed treatment could be a promising option in soil clean-up and valorization.
Collapse
Affiliation(s)
- Jūratė Žaltauskaitė
- Laboratory of Heat Equipment Research and Testing, Lithuanian Energy Institute, Breslaujos 3, 44404, Kaunas, Lithuania.
- Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, Akademija, Kaunas District, Lithuania.
| | - Rimas Meištininkas
- Laboratory of Heat Equipment Research and Testing, Lithuanian Energy Institute, Breslaujos 3, 44404, Kaunas, Lithuania
| | - Austra Dikšaitytė
- Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, Akademija, Kaunas District, Lithuania
| | - Laima Degutytė-Fomins
- Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, Akademija, Kaunas District, Lithuania
| | - Vida Mildažienė
- Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, Akademija, Kaunas District, Lithuania
| | - Zita Naučienė
- Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, Akademija, Kaunas District, Lithuania
| | - Rasa Žūkienė
- Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, Akademija, Kaunas District, Lithuania
| | - Kazunori Koga
- Center of Plasma Nano-Interface Engineering, Kyushu University, Fukuoka, 819-0395, Japan
| |
Collapse
|
18
|
Rani R, Kumar D. Recent advances in degradation of N,N-diethyl-3-toluamide (DEET)-an emerging environmental contaminant: a review. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:238. [PMID: 38319467 DOI: 10.1007/s10661-024-12414-7] [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: 11/30/2023] [Accepted: 01/29/2024] [Indexed: 02/07/2024]
Abstract
N,N-Diethyl-3-toluamide (DEET) is a commonly used insect repellent, which acts as an organic chemical contaminant in water and considered as an emerging contaminant which has been observed worldwide. It gets discharged into the environment through sewage waste. The various methods have been used to degrade DEET, such as UV based, ozonation, photocatalytic degradation, and biodegradation (based on the metabolic activity of fungi and bacteria). However, less research has been done on the degradation of DEET by deploying nanoparticles. Therefore, biodegradation and nanotechnology-based methods can be the potential solution to remediate DEET from the environment. This review is an attempt to analyze the routes of entry of DEET into the atmosphere and its environmental health consequences and to explore physical, chemical, and biological methods of degradation. Furthermore, it focuses on the various methods used for the biodegradation of the DEET, including their environmental consequences. Future research is needed with the application of biological methods for the degradation of DEET. Metabolic pathway for biodegradation was explored for the new potent microbial strains by the application of physical, chemical, and microbial genomics; molecular biology; genetic engineering; and genome sequencing methods.
Collapse
Affiliation(s)
- Ritu Rani
- Department of Biotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039, Sonipat, Haryana, India
| | - Dharmender Kumar
- Department of Biotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039, Sonipat, Haryana, India.
| |
Collapse
|
19
|
Qin X, Xu J, An X, Yang J, Wang Y, Dou M, Wang M, Huang J, Fu Y. Insight of endophytic fungi promoting the growth and development of woody plants. Crit Rev Biotechnol 2024; 44:78-99. [PMID: 36592988 DOI: 10.1080/07388551.2022.2129579] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 04/04/2022] [Accepted: 04/16/2022] [Indexed: 01/04/2023]
Abstract
Microorganisms play an important role in plant growth and development. In particular, endophytic fungi is one of the important kinds of microorganisms and has a mutually beneficial symbiotic relationship with host plants. Endophytic fungi have many substantial benefits to host plants, especially for woody plants, such as accelerating plant growth, enhancing stress resistance, promoting nutrient absorption, resisting pathogens and etc. However, the effects of endophytic fungi on the growth and development of woody plants have not been systematically summarized. In this review, the functions of endophytic fungi for the growth and development of woody plants have been mainly reviewed, including regulating plant growth (e.g., flowering, root elongation, etc.) by producing nutrients and plant hormones, and improving plant disease, insect resistance and heavy metal resistance by producing secondary metabolites. In addition, the diversity of endophytic fungi could improve the ability of woody plants to adapt to adverse environment. The components produced by endophytic fungi have excellent potential for the growth and development of woody plants. This review has systematically discussed the potential regulation mechanism of endophytic fungi regulating the growth and development of woody plants, it would be of great significance for the development and utilization of endophytic fungi resource from woody plants for the protection of forest resources.
Collapse
Affiliation(s)
- Xiangyu Qin
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, PR China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, PR China
| | - Jian Xu
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, PR China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, PR China
| | - Xiaoli An
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, PR China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, PR China
| | - Jie Yang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, PR China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, PR China
| | - Yao Wang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, PR China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, PR China
| | - Meijia Dou
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, PR China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, PR China
| | - Minggang Wang
- The College of Forestry, Beijing Forestry University, Beijing, PR China
| | - Jin Huang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, PR China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, PR China
| | - Yujie Fu
- The College of Forestry, Beijing Forestry University, Beijing, PR China
| |
Collapse
|
20
|
Gaur VK, Tripathi V, Gupta P, Thakur RS, Kaur I, Regar RK, Srivastava PK, Manickam N. Holistic approach to waste mobil oil bioremediation: Valorizing waste through biosurfactant production for soil restoration. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 348:119207. [PMID: 37832293 DOI: 10.1016/j.jenvman.2023.119207] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/30/2023] [Accepted: 09/30/2023] [Indexed: 10/15/2023]
Abstract
The combustion of mobil oil leads to the emission of toxic compounds in the environment. In this study, the aromatic and aliphatic hydrocarbon fractions present in a waste mobil oil collected from automobile market were comprehensively identified and their toxicity was evaluated using wheat grain. Lysinibacillus sphaericus strain IITR51 isolated and characterized previously could degrade 30-80% of both aliphatic and aromatic hydrocarbons in liquid culture. Interestingly, the strain IITR51 produced 627 mg/L of rhamnolipid biosurfactant by utilizing 3% (v/v) of waste mobil oil in the presence of 1.5% glycerol as additional carbon source. In a soil microcosm study by employing strain IITR51, 50-86% of 3-6 ring aromatic hydrocarbons and 63-98% of aliphatic hydrocarbons (C8 to C22) were degraded. Addition of 60 μg/mL rhamnolipid biosurfactant enhanced the degradation of both aliphatic and aromatic hydrocarbons from 76.88% to 61.21%-94.11% and 78.27% respectively. The degradation of mobil oil components improved the soil physico-chemical properties and increased soil fertility to 64% as evident by the phytotoxicity assessments. The findings indicate that strain IITR51 with degradation capability coupled with biosurfactant production could be a candidate for restoring hydrocarbon contaminated soils.
Collapse
Affiliation(s)
- Vivek K Gaur
- FEST Division, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India; School of Energy and Chemical Engineering, UNIST, Ulsan, 44919, Republic of Korea
| | - Varsha Tripathi
- FEST Division, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh, India
| | - Pallavi Gupta
- FEST Division, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India
| | - Ravindra S Thakur
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh, India; Analytical Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India
| | - Ispreet Kaur
- Department of Environmental Technologies, CSIR-National Botanical Research Institute, Lucknow, India
| | - Raj K Regar
- FEST Division, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India
| | - Pankaj K Srivastava
- Department of Environmental Technologies, CSIR-National Botanical Research Institute, Lucknow, India
| | - Natesan Manickam
- FEST Division, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh, India.
| |
Collapse
|
21
|
Melini F, Melini V, Luziatelli F, Abou Jaoudé R, Ficca AG, Ruzzi M. Effect of microbial plant biostimulants on fruit and vegetable quality: current research lines and future perspectives. FRONTIERS IN PLANT SCIENCE 2023; 14:1251544. [PMID: 37900743 PMCID: PMC10602749 DOI: 10.3389/fpls.2023.1251544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 09/25/2023] [Indexed: 10/31/2023]
Abstract
Fruit and vegetables hold a prominent place in dietary guidance worldwide and, following the increasing awareness of the importance of their consumption for health, their demand has been on the rise. Fruit and vegetable production needs to be reconsidered so that it can be productive and, meantime, sustainable, resilient, and can deliver healthy and nutritious diets. Microbial plant biostimulants (PBs) are a possible approach to pursuing global food security and agricultural sustainability, and their application emerged as a promising alternative or substitute to the use of agrochemicals (e.g., more efficient use of mineral and organic fertilizers or less demand and more efficient use of pesticides in integrated production systems) and as a new frontier of investigation. To the best of our knowledge, no comprehensive reviews are currently available on the effects that microbial plant biostimulants' application can have specifically on each horticultural crop. This study thus aimed to provide a state-of-the-art overview of the effects that PBs can have on the morpho-anatomical, biochemical, physiological, and functional traits of the most studied crops. It emerged that most experiments occurred under greenhouse conditions; only a few field trials were carried out. Tomato, lettuce, and basil crops have been primarily treated with Arbuscular Mycorrhizal Fungi (AMF), while plant grow-promoting rhizobacteria (PGPR) metabolites were used for crops, such as strawberries and cucumbers. The literature review also pointed out that crop response to PBs is never univocal. Complex mechanisms related to the PB type, the strain, and the crop botanical family, occur.
Collapse
Affiliation(s)
- Francesca Melini
- CREA Research Centre for Food and Nutrition, Council for Agricultural Research and Economics, Rome, Italy
| | - Valentina Melini
- CREA Research Centre for Food and Nutrition, Council for Agricultural Research and Economics, Rome, Italy
| | - Francesca Luziatelli
- Department for Innovation in Biological, Agrofood and Forest Systems (DIBAF), University of Tuscia, Viterbo, Italy
| | - Renée Abou Jaoudé
- Department for Innovation in Biological, Agrofood and Forest Systems (DIBAF), University of Tuscia, Viterbo, Italy
| | - Anna Grazia Ficca
- Department for Innovation in Biological, Agrofood and Forest Systems (DIBAF), University of Tuscia, Viterbo, Italy
| | - Maurizio Ruzzi
- Department for Innovation in Biological, Agrofood and Forest Systems (DIBAF), University of Tuscia, Viterbo, Italy
| |
Collapse
|
22
|
Zheng K, Liu Z, Liu C, Liu J, Zhuang J. Enhancing remediation potential of heavy metal contaminated soils through synergistic application of microbial inoculants and legumes. Front Microbiol 2023; 14:1272591. [PMID: 37840744 PMCID: PMC10571051 DOI: 10.3389/fmicb.2023.1272591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 09/07/2023] [Indexed: 10/17/2023] Open
Abstract
Soil microorganisms play a crucial role in remediating contaminated soils in modern ecosystems. However, the potential of combining microorganisms with legumes to enhance the remediation of heavy metal-contaminated soils remains unexplored. To investigate this, we isolated and purified a highly efficient cadmium and lead-tolerant strain. Through soil-cultivated pot experiments with two leguminous plants (Robinia pseudoacacia L. and Sophora xanthantha), we studied the effects of applying this microbial agent on plant nutrient uptake of soil nutrients, heavy metal accumulation, and the dynamics of heavy metal content. Additionally, we examined the response characteristics of inter-root microbial and bacterial communities. The results demonstrated that microorganisms screened from heavy metal-contaminated soil environments exhibited strong survival and adaptability in heavy metal solutions. The use of the Serratia marcescens WZ14 strain-phytoremediation significantly increased the soil's ammonium nitrogen (AN) and organic carbon (OC) contents compared to monoculture. In addition, the lead (Pb) and cadmium (Cd) contents of the soil significantly decreased after combined remediation than those of the soil before potting. However, the remediation effects on Pb- and Cd-contaminated soils differed between the two legumes following the Serratia marcescens WZ14 inoculation. The combined restoration altered the composition of the plant inter-rhizosphere bacterial community, with the increase in the relative abundance of both Proteobacteria and Firmicutes. Overall, the combined remediation using the tolerant strain WZ14 with legumes proved advantageous. It effectively reduced the heavy metal content of the soil, minimized the risk of heavy metal migration, and enhanced heavy metal uptake, accumulation, and translocation in the legumes of S. xanthantha and R. pseudoacacia. Additionally, it improved the adaptability and resistance of both legumes, leading to an overall improvement in the soil's environmental quality. These studies can offer primary data and technical support for remediating and treating Cd and Pb in soils, as well as rehabilitating mining sites.
Collapse
Affiliation(s)
| | | | | | | | - Jiayao Zhuang
- Collaborative Innovation Center of Sustainable Forestry in Southern China of Jiangsu Province, Nanjing Forestry University, Nanjing, China
| |
Collapse
|
23
|
Jiang M, Yao F, Yang Y, Zhou Y, Hou K, Chen Y, Feng D, Wu W. Analysis of the rhizosphere bacterial diversity of Angelica dahurica var. formosana from different experimental sites and varieties (strains). PeerJ 2023; 11:e15997. [PMID: 37692115 PMCID: PMC10492537 DOI: 10.7717/peerj.15997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 08/08/2023] [Indexed: 09/12/2023] Open
Abstract
Background Rhizosphere bacteria play important roles in plant growth and secondary metabolite accumulation. Moreover, only with favorable production areas and desirable germplasm can high-yield and high-quality medicinal materials be produced. However, whether origin and germplasm indirectly affect the yield and quality of Angelica dahurica var. formosana through rhizosphere bacterial effects are not known. Methods In this study, a high-throughput sequencing strategy was used to explore the relationship between the rhizosphere bacterial community and the cultivation of A. dahurica var. formosana from different production areas and germplasm for the first time. Results (1) Proteobacteria was the dominant bacterial phylum in the rhizosphere soil of A. dahurica var. formosana, and these bacteria were stable and conserved to a certain extent. (2) High abundance of Proteobacteria was an important rhizospheric indicator of high yield, and high abundance of Firmicutes was an important indicator of high quality. Proteobacteria and Firmicutes might have an important relationship with the yield and quality of A. dahurica var. formosana, respectively. (3) PCoA cluster analysis demonstrated that both production area and germplasm affected the bacterial community structure in the rhizosphere of A. dahurica var. formosana to a certain extent, and production area had the greatest effect. In addition to available potassium, the rhizosphere soil nutrient levels of different production areas strongly affected the bacterial diversity and community. These findings provide a theoretical basis for the exploitation and utilization of rhizosphere microbial resources of A. dahurica var. formosana and offer a novel approach for increasing the yield and quality of this crop.
Collapse
Affiliation(s)
| | - Fei Yao
- Sichuan Agricultural University, Chengdu, China
| | - Yunshu Yang
- Sichuan Agricultural University, Chengdu, China
| | - Yang Zhou
- Sichuan Agricultural University, Chengdu, China
| | - Kai Hou
- Sichuan Agricultural University, Chengdu, China
| | - Yinyin Chen
- Sichuan Agricultural University, Chengdu, China
| | - Dongju Feng
- Sichuan Agricultural University, Chengdu, China
| | - Wei Wu
- Sichuan Agricultural University, Chengdu, China
| |
Collapse
|
24
|
Bhuyan B, Kotoky R, Pandey P. Impacts of rhizoremediation and biostimulation on soil microbial community, for enhanced degradation of petroleum hydrocarbons in crude oil-contaminated agricultural soils. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:94649-94668. [PMID: 37535290 DOI: 10.1007/s11356-023-29033-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 07/25/2023] [Indexed: 08/04/2023]
Abstract
Hydrocarbonoclastic bacterial strains were isolated from rhizosphere of plants growing in crude oil-contaminated sites of Assam, India. These bacteria showed plant growth-promoting attributes, even when exposed to crude oil. Two independent pot trials were conducted to test the rhizodegradation ability of the bacterial consortium in combination of plants Azadirchta indica or Delonix regia in crude oil-contaminated soil. Field experiments were conducted at two crude oil-contaminated agricultural field at Assam (India), where plants (A. indica or D. regia) were grown with the selected bacterial consortium consisting of five hydrocarbonoclastic bacterial isolates (Gordonia amicalis BB-DAC, Pseudomonas aeruginosa BB-BE3, P. citronellolis BB-NA1, Rhodococcus ruber BB-VND, and Ochrobactrum anthropi BB-NM2), and NPK was added to the soil for biostimulation. The bacterial consortium-NPK biostimulation led to change in rhizosphere microbiome with enhanced degradation of petroleum hydrocarbons (PHs) in soils contaminated with crude oil. After 120 days of planting A. indica + consortium + NPK treatment, degradation of PHs was found to be up to 67%, which was 55% with D. regia with the same treatment. Significant changes in the activities of plant and soil enzymes were also noted. The shift is bacterial community was also apparent as with A. indica, the relative abundance of Proteobacteria, Actinobacteria, and Acidobacteria increased by 35.35%, 26.59%, and 20.98%, respectively. In the case of D. regia, the relative abundance of Proteobacteria, Actinobacteria, and Acidobacteria were increased by 39.28%, 35.79%, and 9.60%, respectively. The predicted gene functions shifted in favor of the breakdown of xenobiotic compounds. This study suggests that a combination of plant-bacterial consortium and NPK biostimulation could be a productive approach to bioengineering the rhizosphere microbiome for the purpose of commercial bioremediation of crude oil-contaminated sites, which is a major environmental issue faced globally.
Collapse
Affiliation(s)
- Bhrigu Bhuyan
- Department of Microbiology, Assam University, Silchar, Assam, 788011, India
| | - Rhitu Kotoky
- Department of Microbiology, Assam University, Silchar, Assam, 788011, India
| | - Piyush Pandey
- Department of Microbiology, Assam University, Silchar, Assam, 788011, India.
| |
Collapse
|
25
|
Oleńska E, Małek W, Wójcik M, Szopa S, Swiecicka I, Aleksandrowicz O, Włostowski T, Zawadzka W, Sillen WMA, Vangronsveld J, Cholakova I, Langill T, Thijs S. Bacteria associated with Zn-hyperaccumulators Arabidopsis halleri and Arabidopsis arenosa from Zn-Pb-Cd waste heaps in Poland as promising tools for bioremediation. Sci Rep 2023; 13:12606. [PMID: 37537323 PMCID: PMC10400580 DOI: 10.1038/s41598-023-39852-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 08/01/2023] [Indexed: 08/05/2023] Open
Abstract
To identify metal adapted bacteria equipped with traits positively influencing the growth of two hyperaccumulator plant species Arabidopsis arenosa and Arabidopsis halleri, we isolated bacteria inhabiting rhizosphere and vegetative tissues (roots, basal and stem leaves) of plants growing on two old Zn-Pb-Cd waste heaps in Bolesław and Bukowno (S. Poland), and characterized their potential plant growth promoting (PGP) traits as well as determined metal concentrations in rhizosphere and plant tissues. To determine taxonomic position of 144 bacterial isolates, 16S rDNA Sanger sequencing was used. A metabolic characterization of isolated strains was performed in vitro using PGP tests. A. arenosa and A. halleri accumulate high amounts of Zn in their tissues, especially in stem leaves. Among in total 22 identified bacterial taxa, the highest level of the taxonomical diversity (H' = 2.01) was revealed in A. halleri basal leaf endophytes originating from Bukowno waste heap area. The 96, 98, 99, and 98% of investigated strains showed tolerant to Cd, Zn, Pb and Cu, respectively. Generally, higher percentages of bacteria could synthesize auxins, siderophores, and acetoin as well as could solubilize phosphate. Nine of waste heap origin bacterial strains were tolerant to toxic metals, showed in vitro PGP traits and are potential candidates for bioremediation.
Collapse
Affiliation(s)
- Ewa Oleńska
- Faculty of Biology, University of Bialystok, 1J Ciołkowski, 15-245, Bialystok, Poland.
| | - Wanda Małek
- Faculty of Biology and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, 19 Akademicka, 20-033, Lublin, Poland
| | - Małgorzata Wójcik
- Faculty of Biology and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, 19 Akademicka, 20-033, Lublin, Poland
| | - Sebastian Szopa
- SHIM-POL A.M. Borzymowski, 5 Lubomirski, 05-080, Izabelin, Poland
| | - Izabela Swiecicka
- Faculty of Biology, University of Bialystok, 1J Ciołkowski, 15-245, Bialystok, Poland
- Laboratory of Applied Microbiology, University of Bialystok, 1J Ciołkowski, 15-245, Bialystok, Poland
| | | | - Tadeusz Włostowski
- Faculty of Biology, University of Bialystok, 1J Ciołkowski, 15-245, Bialystok, Poland
| | - Weronika Zawadzka
- Faculty of Biology, University of Bialystok, 1J Ciołkowski, 15-245, Bialystok, Poland
| | - Wouter M A Sillen
- Faculty of Environmental Biology, Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
| | - Jaco Vangronsveld
- Faculty of Biology and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, 19 Akademicka, 20-033, Lublin, Poland
- Faculty of Environmental Biology, Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
| | - Iva Cholakova
- Faculty of Environmental Biology, Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
| | - Tori Langill
- Faculty of Environmental Biology, Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
| | - Sofie Thijs
- Faculty of Environmental Biology, Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
| |
Collapse
|
26
|
Riseh RS, Vazvani MG, Hajabdollahi N, Thakur VK. Bioremediation of Heavy Metals by Rhizobacteria. Appl Biochem Biotechnol 2023; 195:4689-4711. [PMID: 36287331 PMCID: PMC10354140 DOI: 10.1007/s12010-022-04177-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/28/2022] [Indexed: 11/02/2022]
Abstract
Heavy elements accumulate rapidly in the soil due to industrial activities and the industrial revolution, which significantly impact the morphology, physiology, and yield of crops. Heavy metal contamination will eventually affect the plant tolerance threshold and cause changes in the plant genome and genetic structure. Changes in the plant genome lead to changes in encoded proteins and protein sequences. Consuming these mutated products can seriously affect human and animal health. Bioremediation is a process that can be applied to reduce the adverse effects of heavy metals in the soil. In this regard, bioremediation using plant growth-promoting rhizobacteria (PGPRs) as beneficial living agents can help to neutralize the negative interaction between the plant and the heavy metals. PGPRs suppress the adverse effects of heavy metals and the negative interaction of plant-heavy elements by different mechanisms such as biological adsorption and entrapment of heavy elements in extracellular capsules, reduction of metal ion concentration, and formation of complexes with metal ions inside the cell.
Collapse
Affiliation(s)
- Roohallah Saberi Riseh
- Department of Plant Protection, Faculty of Agriculture, Vali-E-Asr University of Rafsanjan, Imam Khomeini Square, Rafsanjan, 7718897111 Iran
| | - Mozhgan Gholizadeh Vazvani
- Department of Plant Protection, Faculty of Agriculture, Vali-E-Asr University of Rafsanjan, Imam Khomeini Square, Rafsanjan, 7718897111 Iran
| | - Najmeh Hajabdollahi
- Department of Plant Protection, Faculty of Agriculture, Vali-E-Asr University of Rafsanjan, Imam Khomeini Square, Rafsanjan, 7718897111 Iran
| | - Vijay Kumar Thakur
- Biorefining and Advanced Materials Research Center, Scotland’s Rural College (SRUC), Edinburgh, EH9 3JG UK
- School of Engineering, University of Petroleum & Energy Studies (UPES), Dehradun, 248007 India
- Centre for Research and Development, Chandigarh University, Mohali, 140413 Punjab India
- Department of Biotechnology, Graphic Era Deemed to Be University, Dehradun, 248002 Uttarakhand India
| |
Collapse
|
27
|
Saharan BS, Chaudhary T, Mandal BS, Kumar D, Kumar R, Sadh PK, Duhan JS. Microbe-Plant Interactions Targeting Metal Stress: New Dimensions for Bioremediation Applications. J Xenobiot 2023; 13:252-269. [PMID: 37367495 DOI: 10.3390/jox13020019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/25/2023] [Accepted: 05/30/2023] [Indexed: 06/28/2023] Open
Abstract
In the age of industrialization, numerous non-biodegradable pollutants like plastics, HMs, polychlorinated biphenyls, and various agrochemicals are a serious concern. These harmful toxic compounds pose a serious threat to food security because they enter the food chain through agricultural land and water. Physical and chemical techniques are used to remove HMs from contaminated soil. Microbial-metal interaction, a novel but underutilized strategy, might be used to lessen the stress caused by metals on plants. For reclaiming areas with high levels of heavy metal contamination, bioremediation is effective and environmentally friendly. In this study, the mechanism of action of endophytic bacteria that promote plant growth and survival in polluted soils-known as heavy metal-tolerant plant growth-promoting (HMT-PGP) microorganisms-and their function in the control of plant metal stress are examined. Numerous bacterial species, such as Arthrobacter, Bacillus, Burkholderia, Pseudomonas, and Stenotrophomonas, as well as a few fungi, such as Mucor, Talaromyces, Trichoderma, and Archaea, such as Natrialba and Haloferax, have also been identified as potent bioresources for biological clean-up. In this study, we additionally emphasize the role of plant growth-promoting bacteria (PGPB) in supporting the economical and environmentally friendly bioremediation of heavy hazardous metals. This study also emphasizes future potential and constraints, integrated metabolomics approaches, and the use of nanoparticles in microbial bioremediation for HMs.
Collapse
Affiliation(s)
- Baljeet Singh Saharan
- Department of Microbiology, CCS Haryana Agricultural University, Hisar 125004, India
| | - Twinkle Chaudhary
- Department of Animal Biotechnology, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar 125004, India
| | - Balwan Singh Mandal
- Department of Forestry, CCS Haryana Agricultural University, Hisar 125004, India
| | - Dharmender Kumar
- Department of Biotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal 131039, India
| | - Ravinder Kumar
- Department of Biotechnology, Chaudhary Devi Lal University, Sirsa 125055, India
| | - Pardeep Kumar Sadh
- Department of Biotechnology, Chaudhary Devi Lal University, Sirsa 125055, India
| | | |
Collapse
|
28
|
Rai PK, Sonne C, Kim KH. Heavy metals and arsenic stress in food crops: Elucidating antioxidative defense mechanisms in hyperaccumulators for food security, agricultural sustainability, and human health. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 874:162327. [PMID: 36813200 DOI: 10.1016/j.scitotenv.2023.162327] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/02/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
The spread of heavy metal(loid)s at soil-food crop interfaces has become a threat to sustainable agricultural productivity, food security, and human health. The eco-toxic effects of heavy metals on food crops can be manifested through reactive oxygen species that have the potential to disturb seed germination, normal growth, photosynthesis, cellular metabolism, and homeostasis. This review provides a critical overview of stress tolerance mechanisms in food crops/hyperaccumulator plants against heavy metals and arsenic (HM-As). The HM-As antioxidative stress tolerance in food crops is associated with changes in metabolomics (physico-biochemical/lipidomics) and genomics (molecular level). Furthermore, HM-As stress tolerance can occur through plant-microbe, phytohormone, antioxidant, and signal molecule interactions. Information regarding the avoidance, tolerance, and stress resilience of HM-As should help pave the way to minimize food chain contamination, eco-toxicity, and health risks. Advanced biotechnological approaches (e.g., genome modification with CRISPR-Cas9 gene editing) in concert with traditional sustainable biological methods are useful options to develop 'pollution safe designer cultivars' with increased climate change resilience and public health risks mitigation. Further, the usage of HM-As tolerant hyperaccumulator biomass in biorefineries (e.g., environmental remediation, value added chemicals, and bioenergy) is advocated to realize the synergy between biotechnological research and socio-economic policy frameworks, which are inextricably linked with environmental sustainability. The biotechnological innovations, if directed toward 'cleaner climate smart phytotechnologies' and 'HM-As stress resilient food crops', should help open the new path to achieve sustainable development goals (SDGs) and a circular bioeconomy.
Collapse
Affiliation(s)
- Prabhat Kumar Rai
- Department of Environmental Science, Mizoram University, Aizawl 796004, India
| | - Christian Sonne
- Department of Ecoscience, Aarhus University, Frederiksborgvej 399, PO Box 358, DK-4000 Roskilde, Denmark
| | - Ki-Hyun Kim
- Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
| |
Collapse
|
29
|
Yang C, Xia L, Zeng Y, Chen Y, Zhang S. Hexaploid Salix rehderiana is more suitable for remediating lead contamination than diploids, especially male plants. CHEMOSPHERE 2023; 333:138902. [PMID: 37182717 DOI: 10.1016/j.chemosphere.2023.138902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/04/2023] [Accepted: 05/08/2023] [Indexed: 05/16/2023]
Abstract
Willows are promising candidates for phytoremediation, but the lead (Pb) phytoremediation potential of different willow ploidy and sex has not yet been exploited. In this study, the Pb uptake, translocation and detoxification capacities of hexaploid and diploid, female and male Salix rehderiana were investigated. The results showed that Pb treatment inhibited biomass accumulation and gas exchange, caused ultrastructural and oxidative damage, and induced antioxidant, phytohormonal and transcriptional regulation in S. rehderiana. Absorbed Pb was mainly accumulated in the roots with restricted root-to-shoot transport. Despite lower biomass, greater transpiration, phytohormonal and transcriptional regulation indicated that hexaploid S. rehderiana had higher tissue Pb concentration, total accumulated Pb amount (4.39 mg, 6.19 mg, 6.60 mg and 10.83 mg in diploid and hexaploid females and males, respectively) as well as bioconcentration factors and translocation factors (0.412, 0.593, 0.921 and 1.320 for bioconcentration factors in roots, and 0.029, 0.032, 0.035 and 0.047 for translocation factors in diploid and hexaploid females and males, respectively) than diploids. Higher soil urease and acid phosphatase activities also favored hexaploids to use more available N and P than diploids in Pb-contaminated soils. Additionally, hexaploid S. rehderiana had stronger antioxidant, phytohormonal and transcriptional responses, and displayed less morphological and ultrastructural damage than diploids after Pb treatment, suggesting that hexaploids have greater Pb uptake, translocation and detoxification capacities than diploids. Moreover, S. rehderiana males had greater Pb uptake and translocation abilities, as well as stronger antioxidant, phytohormonal, and transcriptional regulation mediated Pb detoxification capacities than females. Therefore, hexaploid S. rehderiana are superior to diploids, and males are better than females in Pb phytoremediation. This study provides novel and valuable insights for selecting better willow materials to mitigate Pb contamination.
Collapse
Affiliation(s)
- Congcong Yang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Linchao Xia
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Yi Zeng
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Yao Chen
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Sheng Zhang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China.
| |
Collapse
|
30
|
Mocek-Płóciniak A, Mencel J, Zakrzewski W, Roszkowski S. Phytoremediation as an Effective Remedy for Removing Trace Elements from Ecosystems. PLANTS (BASEL, SWITZERLAND) 2023; 12:1653. [PMID: 37111876 PMCID: PMC10141480 DOI: 10.3390/plants12081653] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/07/2023] [Accepted: 04/12/2023] [Indexed: 06/19/2023]
Abstract
The pollution of soil by trace elements is a global problem. Conventional methods of soil remediation are often inapplicable, so it is necessary to search intensively for innovative and environment-friendly techniques for cleaning up ecosystems, such as phytoremediation. Basic research methods, their strengths and weaknesses, and the effects of microorganisms on metallophytes and plant endophytes resistant to trace elements (TEs) were summarised and described in this manuscript. Prospectively, bio-combined phytoremediation with microorganisms appears to be an ideal, economically viable and environmentally sound solution. The novelty of the work is the description of the potential of "green roofs" to contribute to the capture and accumulation of many metal-bearing and suspended dust and other toxic compounds resulting from anthropopressure. Attention was drawn to the great potential of using phytoremediation on less contaminated soils located along traffic routes and urban parks and green spaces. It also focused on the supportive treatments for phytoremediation using genetic engineering, sorbents, phytohormones, microbiota, microalgae or nanoparticles and highlighted the important role of energy crops in phytoremediation. Perceptions of phytoremediation on different continents are also presented, and new international perspectives are presented. Further development of phytoremediation requires much more funding and increased interdisciplinary research in this direction.
Collapse
Affiliation(s)
- Agnieszka Mocek-Płóciniak
- Department of Soil Science and Microbiology, Poznan University of Life Sciences, Szydłowska 50, 60-656 Poznan, Poland
| | - Justyna Mencel
- Department of Soil Science and Microbiology, Poznan University of Life Sciences, Szydłowska 50, 60-656 Poznan, Poland
| | - Wiktor Zakrzewski
- Regional Chemical and Agricultural Station in Poznan, Sieradzka 29, 60-163 Poznan, Poland
| | - Szymon Roszkowski
- Department of Geriatrics, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Jagiellonska 13/15, 85-067 Bydgoszcz, Poland
| |
Collapse
|
31
|
Tang S, Xu Y, Zeng K, Liang X, Shi X, Liu K, Ma J, Yu F, Li Y. Comparative study on plant growth-promoting bacterial inoculation by irrigation and spraying for promoting Bidens pilosa L. phytoremediation of cadmium-contaminated soil. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 254:114764. [PMID: 36907097 DOI: 10.1016/j.ecoenv.2023.114764] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 03/06/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
A field study was conducted to compare FM-1 inoculation by irrigation and spraying for promoting Bidens pilosa L. phytoremediation of cadmium (Cd)-contaminated soil. Cascading relationships between bacterial inoculation by irrigation and spraying and soil properties, plant growth-promoting traits, plant biomass and Cd concentrations in Bidens pilosa L. were explored based on the partial least squares path model (PLS-PM). The results indicated that inoculation with FM-1 not only improved the rhizosphere soil environment of B. pilosa L. but also increased the Cd extracted from the soil. Moreover, Fe and P in leaves play vital roles in promoting plant growth when FM-1 is inoculated by irrigation, while Fe in leaves and stems plays a vital role in promoting plant growth when FM-1 is inoculated by spraying. In addition, FM-1 inoculation decreased the soil pH by affecting soil dehydrogenase and oxalic acid in cases with irrigation and Fe in roots in cases with spraying. Thus, the soil bioavailable Cd content increased and promoted Cd uptake by Bidens pilosa L. To address Cd-induced oxidative stress, Fe in leaves helped to convert GSH into PCs, which played a vital role in ROS scavenging when FM-1 was inoculated by irrigation. The soil urease content effectively increased the POD and APX activities in the leaves of Bidens pilosa L., which helped alleviate Cd-induced oxidative stress when FM-1 was inoculated by spraying. This study compares and illustrates the potential mechanism by which FM-1 inoculation can improve the phytoremediation of Cd-contaminated soil by Bidens pilosa L., suggesting that FM-1 inoculation by irrigation and spraying is useful in the phytoremediation of Cd-contaminated sites.
Collapse
Affiliation(s)
- Shuting Tang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; College of Environment and Resources, Guangxi Normal University, 541004 Guilin, China
| | - Yue Xu
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; College of Environment and Resources, Guangxi Normal University, 541004 Guilin, China
| | - Kaiyue Zeng
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; College of Environment and Resources, Guangxi Normal University, 541004 Guilin, China
| | - Xin Liang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; College of Environment and Resources, Guangxi Normal University, 541004 Guilin, China
| | - Xinwei Shi
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; College of Environment and Resources, Guangxi Normal University, 541004 Guilin, China
| | - Kehui Liu
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; Guangxi Key Laboratory of Landscape Resources Conservation and Sustainable Utilization in Lijiang River Basin, Guangxi Normal University, 541004 Guilin, China; College of Life Science, Guangxi Normal University, 541004 Guilin, China
| | - Jiangming Ma
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; Guangxi Key Laboratory of Landscape Resources Conservation and Sustainable Utilization in Lijiang River Basin, Guangxi Normal University, 541004 Guilin, China; College of Life Science, Guangxi Normal University, 541004 Guilin, China
| | - Fangming Yu
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; Guangxi Key Laboratory of Landscape Resources Conservation and Sustainable Utilization in Lijiang River Basin, Guangxi Normal University, 541004 Guilin, China; College of Environment and Resources, Guangxi Normal University, 541004 Guilin, China.
| | - Yi Li
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; Guangxi Key Laboratory of Landscape Resources Conservation and Sustainable Utilization in Lijiang River Basin, Guangxi Normal University, 541004 Guilin, China; College of Environment and Resources, Guangxi Normal University, 541004 Guilin, China.
| |
Collapse
|
32
|
Sahoo B, Chaudhuri S. Removal of lindane in liquid culture using soil bacteria and toxicity assessment in human skin fibroblast and HCT116 cell lines. ENVIRONMENTAL TECHNOLOGY 2023; 44:1213-1227. [PMID: 34694963 DOI: 10.1080/09593330.2021.1998229] [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: 07/23/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
The development of effective measures for the remediation of lindane contaminated sites is the need of the hour. In this study, a potent lindane degrading bacteria, identified as Rhodococcus rhodochrous NITDBS9 was isolated from an agricultural field of Odisha that could utilize up to 87% of 100 mg L-1 lindane when grown under liquid culture conditions in mineral salt media in 10 days. The bacteria could produce biofilm in lindane-containing media. Rhodococcus rhodochrous NITDBS9 was further characterized for its plant growth-promoting properties and it was found that the bacteria showed abilities for phytohormone, ammonia and biosurfactant production, etc. This could be beneficial for the bioremediation and improvement of crop production in contaminated sites. Ecotoxicity studies carried out for lindane, and its degradation products in mung bean and mustard seeds showed a reduction in toxicity of lindane after treatment with NITDBS9. NITDBS9 was used with a previously isolated potent lindane degrading strain Paracoccus sp. NITDBR1 in a dual mixed culture for the enhanced removal of lindane in the liquid system i.e. up to 93% in 10 days. Cytotoxicity studies were conducted with lindane before and after treatment with the single and dual mixed cultures on human skin fibroblast and HCT116 cell lines. They revealed a significant reduction in toxicity of lindane after it was bioremediated with the single and dual mixed cultures. Therefore, our proposed strategy could be efficiently used for the detoxification of the lindane-contaminated system, and further work should be done to study the use of these cultures in the contaminated soil system.
Collapse
Affiliation(s)
- Banishree Sahoo
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur, India
| | - Surabhi Chaudhuri
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur, India
| |
Collapse
|
33
|
Tiwari P, Bae H. Trends in Harnessing Plant Endophytic Microbiome for Heavy Metal Mitigation in Plants: A Perspective. PLANTS (BASEL, SWITZERLAND) 2023; 12:1515. [PMID: 37050141 PMCID: PMC10097340 DOI: 10.3390/plants12071515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/08/2023] [Accepted: 03/27/2023] [Indexed: 06/19/2023]
Abstract
Plant microbiomes represent dynamic entities, influenced by the environmental stimuli and stresses in the surrounding conditions. Studies have suggested the benefits of commensal microbes in improving the overall fitness of plants, besides beneficial effects on plant adaptability and survival in challenging environmental conditions. The concept of 'Defense biome' has been proposed to include the plant-associated microbes that increase in response to plant stress and which need to be further explored for their role in plant fitness. Plant-associated endophytes are the emerging candidates, playing a pivotal role in plant growth, adaptability to challenging environmental conditions, and productivity, as well as showing tolerance to biotic and abiotic stresses. In this article, efforts have been made to discuss and understand the implications of stress-induced changes in plant endophytic microbiome, providing key insights into the effects of heavy metals on plant endophytic dynamics and how these beneficial microbes provide a prospective solution in the tolerance and mitigation of heavy metal in contaminated sites.
Collapse
|
34
|
Chandwani S, Kayasth R, Naik H, Amaresan N. Current status and future prospect of managing lead (Pb) stress through microbes for sustainable agriculture. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:479. [PMID: 36930330 DOI: 10.1007/s10661-023-11061-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 02/25/2023] [Indexed: 06/18/2023]
Abstract
Soil is an important residence under various biotic and abiotic conditions. Contamination of soil by various means has hazardous effects on both plants and humans. Soil contamination by heavy metals occurs due to various man-made activities, including improper industrial and agricultural practices. Among the heavy metals, after arsenic, lead (Pb) was found to be the second most toxic metal and potent pollutants that accumulate in sediments and soils. Pb is not considered an essential element for promoting plant growth but is readily absorbed and accumulated in different plant parts. Many parameters such as pH, root exudation, soil particle size, cation exchange capacity, and other physicochemical parameters are involved in Pb uptake in plants. Excess amounts of Pb pose a threat to plant growth and cause toxicity such as chlorosis, blackening of the root system, and stunted growth. Pb toxicity may inhibit photosynthesis, disturb water balance and mineral nutrition, and alter the hormonal status, structure, and membrane permeability of plants. Therefore, this review addresses the effects of Pb toxicity and its impact on plant growth, including the morphological, physiological, and biological effects of Pb toxicity, the mechanisms behind different strategies promoting plant growth, and in combating Pb-induced stress. The bioremediation strategy for Pb removal from Pb-contaminated soil also plays an important role in combating Pb toxicity using bacterial community. Pb-contaminated soil may be remediated using different technologies such as rhizofiltration and phytoremediation, which tend to have a great capacity to curb Pb-contamination within the soil.
Collapse
Affiliation(s)
- Sapna Chandwani
- C.G. Bhakta Institute of Biotechnology, Uka Tarsadia University, Maliba Campus, Bardoli Surat, 394 350, Gujarat, India
| | - Rinkal Kayasth
- C.G. Bhakta Institute of Biotechnology, Uka Tarsadia University, Maliba Campus, Bardoli Surat, 394 350, Gujarat, India
| | - Hetvi Naik
- C.G. Bhakta Institute of Biotechnology, Uka Tarsadia University, Maliba Campus, Bardoli Surat, 394 350, Gujarat, India
| | - Natarajan Amaresan
- C.G. Bhakta Institute of Biotechnology, Uka Tarsadia University, Maliba Campus, Bardoli Surat, 394 350, Gujarat, India.
| |
Collapse
|
35
|
Wróbel M, Śliwakowski W, Kowalczyk P, Kramkowski K, Dobrzyński J. Bioremediation of Heavy Metals by the Genus Bacillus. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:ijerph20064964. [PMID: 36981874 PMCID: PMC10049623 DOI: 10.3390/ijerph20064964] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/07/2023] [Accepted: 03/09/2023] [Indexed: 06/12/2023]
Abstract
Environmental contamination with heavy metals is one of the major problems caused by human activity. Bioremediation is an effective and eco-friendly approach that can reduce heavy metal contamination in the environment. Bioremediation agents include bacteria of the genus Bacillus, among others. The best-described species in terms of the bioremediation potential of Bacillus spp. Are B. subtilis, B. cereus, or B. thuringiensis. This bacterial genus has several bioremediation strategies, including biosorption, extracellular polymeric substance (EPS)-mediated biosorption, bioaccumulation, or bioprecipitation. Due to the above-mentioned strategies, Bacillus spp. strains can reduce the amounts of metals such as lead, cadmium, mercury, chromium, arsenic or nickel in the environment. Moreover, strains of the genus Bacillus can also assist phytoremediation by stimulating plant growth and bioaccumulation of heavy metals in the soil. Therefore, Bacillus spp. is one of the best sustainable solutions for reducing heavy metals from various environments, especially soil.
Collapse
Affiliation(s)
- Monika Wróbel
- Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland
| | - Wojciech Śliwakowski
- Institute of Technology and Life Sciences—National Research Institute, Falenty, 3 Hrabska Avenue, 05-090 Raszyn, Poland
| | - Paweł Kowalczyk
- Department of Animal Nutrition, The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, Instytucka 3, 05-110 Jabłonna, Poland
| | - Karol Kramkowski
- Department of Physical Chemistry, Medical University of Białystok, Kilińskiego 1 Str., 15-089 Białystok, Poland
| | - Jakub Dobrzyński
- Institute of Technology and Life Sciences—National Research Institute, Falenty, 3 Hrabska Avenue, 05-090 Raszyn, Poland
| |
Collapse
|
36
|
Zhang C, Chen H, Dai Y, Chen Y, Tian Y, Huo Z. Isolation and screening of phosphorus solubilizing bacteria from saline alkali soil and their potential for Pb pollution remediation. Front Bioeng Biotechnol 2023; 11:1134310. [PMID: 36814714 PMCID: PMC9939700 DOI: 10.3389/fbioe.2023.1134310] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 01/23/2023] [Indexed: 02/08/2023] Open
Abstract
The high pH and salinity of saline alkali soil not only seriously restrict the growth of crops, but also aggravate the pollution of heavy metals. The fixation of heavy metals and the regulation of pH by phosphorus solubilizing microorganisms may become a new way to repair heavy mental and improve saline alkali soil. In this study, a saline-alkali resistant bacteria (CZ-B1, CGMCC No: 1.19458) was screened from saline-alkali soil, and its tolerance to salt/alkali/lead stress was investigated by shaking flask experiment. The strain was identified as Bacillus amyloliquefaciens by morphology and 16S rRNA gene sequence analysis. The optimum growth temperature of CZ-B1 is about 35°C-40℃. The maximum salt stress and pH that it can tolerance are 100 g/L and 9 respectively, and its tolerance to Pb2+ can reach 2000 mg/L. The phosphorus release amount of CZ-B1 to Ca3(PO4)2 within 72 h is 91.00-102.73 mg/L. The phosphate solubilizing index in PVK agar medium and NBRIP agar medium are more than 2, which can be defined as phosphate solubilizing bacteria. Moreover, the dissolution of CZ-B1 to phosphorus is mainly attributed to tartaric acid, citric acid and succinic acid in inorganic medium. In addition, the removal rate of Pb2+ by CZ-B1 can reach 90.38% for 500 mg/L. This study found that CZ-B1 can immobilize Pb through three biological mechanisms (organic acid, extracellular polymers and mineralization reaction). The release of succinic acid (10.97 g/L) and citric acid (5.26 g/L) may be the main mechanism to promote the mineralization reaction of CZ-B1 (phosphate and oxalate) and resistance to Pb stress. In addition, the high enrichment of Pb2+ by EPS can increase the rate of extracellular electron transfer and accelerate the mineralization of CZ-B1. The screening and domestication of saline-tolerant phosphorus-solubilizing bacteria not only help to remediate Pb contamination in saline soils, but also can provide P element for plant growth in saline soil.
Collapse
Affiliation(s)
- Chaonan Zhang
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, China
| | - Haoming Chen
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, China,*Correspondence: Zongli Huo, ; Haoming Chen,
| | - Yao Dai
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, China
| | - Yan Chen
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, China
| | - Yuxin Tian
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, China
| | - Zongli Huo
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China,*Correspondence: Zongli Huo, ; Haoming Chen,
| |
Collapse
|
37
|
Dhuldhaj UP, Singh R, Singh VK. Pesticide contamination in agro-ecosystems: toxicity, impacts, and bio-based management strategies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:9243-9270. [PMID: 36456675 DOI: 10.1007/s11356-022-24381-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 11/19/2022] [Indexed: 06/17/2023]
Abstract
Continuous rise in application of pesticides in the agro-ecosystems in order to ensure food supply to the ever-growing population is of greater concern to the human health and the environment. Once entered into the agro-ecosystem, the fate and transport of pesticides is determined largely by the nature of pesticides and the soil attributes, in addition to the soil-inhabiting microbes, fauna, and flora. Changes in the soil microbiological actions, soil properties, and enzymatic activities resulting from pesticide applications are the important factors substantially affecting the soil productivity. Disturbances in the microbial community composition may lead to the considerable perturbations in cycling of major nutrients, metals, and subsequent uptake by plants. Indiscriminate applications are linked with the accumulation of pesticides in plant-based foods, feeds, and animal products. Furthermore, rapid increase in the application of pesticides having long half-life has also been reported to contaminate the nearby aquatic environments and accumulation in the plants, animals, and microbes surviving there. To circumvent the negative consequences of pesticide application, multitude of techniques falling in physical, chemical, and biological categories are presented by different investigators. In the present study, important findings pertaining to the pesticide contamination in cultivated agricultural soils; toxicity on soil microbes, plants, invertebrates, and vertebrates; effects on soil characteristics; and alleviation of toxicity by bio-based management approaches have been thoroughly reviewed. With the help of bibliometric analysis, thematic evolution and research trends on the bioremediation of pesticides in the agro-ecosystems have also been highlighted.
Collapse
Affiliation(s)
- Umesh Pravin Dhuldhaj
- School of Life Sciences, Swami Ramanand Teerth Marathwada University, Nanded, 431606, India
| | - Rishikesh Singh
- Department of Botany, Panjab University, Chandigarh, 160014, India
| | - Vipin Kumar Singh
- Department of Botany, K. S. Saket P. G. College, (Affiliated to Dr. Ram Manohar Lohia Avadh University), Ayodhya, 224123, India.
| |
Collapse
|
38
|
Ghitti E, Rolli E, Crotti E, Borin S. Flavonoids Are Intra- and Inter-Kingdom Modulator Signals. Microorganisms 2022; 10:microorganisms10122479. [PMID: 36557733 PMCID: PMC9781135 DOI: 10.3390/microorganisms10122479] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 12/07/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Flavonoids are a broad class of secondary metabolites with multifaceted functionalities for plant homeostasis and are involved in facing both biotic and abiotic stresses to sustain plant growth and health. Furthermore, they were discovered as mediators of plant networking with the surrounding environment, showing a surprising ability to perform as signaling compounds for a multitrophic inter-kingdom level of communication that influences the plant host at the phytobiome scale. Flavonoids orchestrate plant-neighboring plant allelopathic interactions, recruit beneficial bacteria and mycorrhizal fungi, counteract pathogen outbreak, influence soil microbiome and affect plant physiology to improve its resilience to fluctuating environmental conditions. This review focuses on the diversified spectrum of flavonoid functions in plants under a variety of stresses in the modulation of plant morphogenesis in response to environmental clues, as well as their role as inter-kingdom signaling molecules with micro- and macroorganisms. Regarding the latter, the review addresses flavonoids as key phytochemicals in the human diet, considering their abundance in fruits and edible plants. Recent evidence highlights their role as nutraceuticals, probiotics and as promising new drugs for the treatment of several pathologies.
Collapse
|
39
|
Impact of Plant-Beneficial Bacterial Inocula on the Resident Bacteriome: Current Knowledge and Future Perspectives. Microorganisms 2022; 10:microorganisms10122462. [PMID: 36557714 PMCID: PMC9781654 DOI: 10.3390/microorganisms10122462] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022] Open
Abstract
The inoculation of plant growth-promoting bacteria (PGPB) as biofertilizers is one of the most efficient and sustainable strategies of rhizosphere manipulation leading to increased plant biomass and yield and improved plant health, as well as the ameliorated nutritional value of fruits and edible seeds. During the last decades, exciting, but heterogeneous, results have been obtained growing PGPB inoculated plants under controlled, stressful, and open field conditions. On the other hand, the possible impact of the PGPB deliberate release on the resident microbiota has been less explored and the little available information is contradictory. This review aims at filling this gap: after a brief description of the main mechanisms used by PGPB, we focus our attention on the process of PGPB selection and formulation and we provide some information on the EU regulation for microbial inocula. Then, the concept of PGPB inocula as a tool for rhizosphere engineering is introduced and the possible impact of bacterial inoculant on native bacterial communities is discussed, focusing on those bacterial species that are included in the EU regulation and on other promising bacterial species that are not yet included in the EU regulation.
Collapse
|
40
|
Ciadamidaro L, Pfendler S, Girardclos O, Zappelini C, Binet P, Bert V, Khasa D, Blaudez D, Chalot M. Mycorrhizal inoculation effects on growth and the mycobiome of poplar on two phytomanaged sites after 7-year-short rotation coppicing. FRONTIERS IN PLANT SCIENCE 2022; 13:993301. [PMID: 36388565 PMCID: PMC9650387 DOI: 10.3389/fpls.2022.993301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
AIMS Afforestation of trace-element contaminated soils, notably with fast growing trees, has been demonstrated to be an attractive option for bioremediation due to the lower costs and dispersion of contaminants than conventional cleanup methods. Mycorrhizal fungi form symbiotic associations with plants, contributing to their tolerance towards toxic elements and actively participating to the biorestoration processes. The aim of this study was to deepen our understanding on the effects of mycorrhizal inoculation on plant development and fungal community at two trace-element contaminated sites (Pierrelaye and Fresnes-sur-Escaut, France) planted with poplar (Populus trichocarpa x Populus maximowiczii). METHODS The 2 sites were divided into 4 replicated field blocks with a final plant density of 2200 tree h-1. Half of the trees were inoculated with a commercial inoculum made of a mix of mycorrhizal species. The sites presented different physico-chemical characteristics (e.g., texture: sandy soil versus silty-loam soil and organic matter: 5.7% versus 3.4% for Pierrelaye and Fresnes-sur-Escaut, respectively) and various trace element contamination levels. RESULTS After 7 years of plantation, inoculation showed a significant positive effect on poplar biomass production at the two sites. Fungal composition study demonstrated a predominance of the phylum Ascomycota at both sites, with a dominance of Geopora Arenicola and Mortierella elongata, and a higher proportion of ectomycorrhizal and endophytic fungi (with the highest values observed in Fresnes-sur-Escaut: 45% and 28% for ECM and endophytic fungi, respectively), well known for their capacity to have positive effects on plant development in stressful conditions. Furthermore, Pierrelaye site showed higher frequency (%) of mycorrhizal tips for ectomycorrhizal fungi (ECM) and higher intensity (%) of mycorrhizal root cortex colonization for arbuscular mycorrhizal fungi (AMF) than Fresnes-sur-Escaut site, which translates in a higher level of diversity. CONCLUSIONS Finally, this study demonstrated that this biofertilization approach could be recommended as an appropriate phytomanagement strategy, due to its capacity to significantly improve poplar productivity without any perturbations in soil mycobiomes.
Collapse
Affiliation(s)
- Lisa Ciadamidaro
- Chrono-environnement UMR6249, CNRS, Université Bourgogne Franche-Comté, Besançon, France
| | - Stéphane Pfendler
- Laboratoire Chrono-environnement UMR6249, CNRS, Université Bourgogne Franche-Comté, Besançon, France
| | - Olivier Girardclos
- Laboratoire Chrono-environnement UMR6249, CNRS, Université Bourgogne Franche-Comté, Besançon, France
| | - Cyril Zappelini
- Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, Dijon, France
| | - Philippe Binet
- Laboratoire Chrono-environnement UMR6249, CNRS, Université Bourgogne Franche-Comté, Besançon, France
| | - Valerie Bert
- INERIS, Clean Technologies and Circular Economy Unit, SIT, Parc Technologique Alata, BP2, Verneuil-en- Halatte, France
| | - Damase Khasa
- Centre for Forest Research and Institute for Systems and Integrative Biology, Université Laval, Québec, QC, Canada
| | | | - Michel Chalot
- Laboratoire Chrono-environnement UMR6249, CNRS, Université Bourgogne Franche-Comté, Besançon, France
- Université de Lorraine, Faculté des Sciences et Technologies, Nancy, France
| |
Collapse
|
41
|
Jin J, Huang R, Wang J, Wang C, Liu R, Zhang H, Deng M, Li S, Li X, Tang R, Li C. Increase in Cd Tolerance through Seed-Borne Endophytic Fungus Epichloë gansuensis Affected Root Exudates and Rhizosphere Bacterial Community of Achnatherum inebrians. Int J Mol Sci 2022; 23:13094. [PMID: 36361880 PMCID: PMC9654189 DOI: 10.3390/ijms232113094] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/23/2022] [Accepted: 10/25/2022] [Indexed: 08/19/2023] Open
Abstract
Soil cadmium (Cd) pollution is a serious environmental problem imperiling food safety and human health. The endophyte Epichloë gansuensis can improve the tolerance of Achnatherum inebrians to Cd stress. However, it is still unknown whether and how the endophyte helps host plants build up a specific bacterial community when challenged by CdCl2. In this study, the responses of the structure and function of bacterial community and root exudates of E+ (E. gansuensis infected) and E- (E. gansuensis uninfected) plants to Cd stress were investigated. Analysis of bacterial community structure indicated that the rhizosphere bacterial community predominated over the root endosphere bacterial community in enhancing the resistance of CdCl2 in a host mediated by E. gansuensis. E+ plant strengthened the interspecific cooperation of rhizosphere bacterial species. Moreover, the analysis of root exudates demonstrated E. gansuensis and increased the contents of organic acids and amino acids under Cd stress, and most root exudates were significantly correlated with rhizosphere bacteria. These results suggested that E. gansuensis employed a specific strategy to recruit distinct rhizosphere bacterial species and relevant functions by affecting root exudates to improve the tolerance of the host to Cd stress. This study provides a firm foundation for the potential application of symbionts in improving phytostabilization efficiency.
Collapse
Affiliation(s)
- Jie Jin
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, Collaborative Innovation Center for Western Ecological Safety, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Rong Huang
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, Collaborative Innovation Center for Western Ecological Safety, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Jianfeng Wang
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, Collaborative Innovation Center for Western Ecological Safety, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China
| | - Chao Wang
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, Collaborative Innovation Center for Western Ecological Safety, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Ronggui Liu
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, Collaborative Innovation Center for Western Ecological Safety, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Hanwen Zhang
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, Collaborative Innovation Center for Western Ecological Safety, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Maohua Deng
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, Collaborative Innovation Center for Western Ecological Safety, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Shicai Li
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, Collaborative Innovation Center for Western Ecological Safety, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Xinglu Li
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, Collaborative Innovation Center for Western Ecological Safety, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Rong Tang
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, Collaborative Innovation Center for Western Ecological Safety, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Chunjie Li
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, Collaborative Innovation Center for Western Ecological Safety, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
| |
Collapse
|
42
|
Khanna K, Kohli SK, Sharma N, Kour J, Devi K, Bhardwaj T, Dhiman S, Singh AD, Sharma N, Sharma A, Ohri P, Bhardwaj R, Ahmad P, Alam P, Albalawi TH. Phytomicrobiome communications: Novel implications for stress resistance in plants. Front Microbiol 2022; 13:912701. [PMID: 36274695 PMCID: PMC9583171 DOI: 10.3389/fmicb.2022.912701] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 07/15/2022] [Indexed: 11/13/2022] Open
Abstract
The agricultural sector is a foremost contributing factor in supplying food at the global scale. There are plethora of biotic as well as abiotic stressors that act as major constraints for the agricultural sector in terms of global food demand, quality, and security. Stresses affect rhizosphere and their communities, root growth, plant health, and productivity. They also alter numerous plant physiological and metabolic processes. Moreover, they impact transcriptomic and metabolomic changes, causing alteration in root exudates and affecting microbial communities. Since the evolution of hazardous pesticides and fertilizers, productivity has experienced elevation but at the cost of impeding soil fertility thereby causing environmental pollution. Therefore, it is crucial to develop sustainable and safe means for crop production. The emergence of various pieces of evidence depicting the alterations and abundance of microbes under stressed conditions proved to be beneficial and outstanding for maintaining plant legacy and stimulating their survival. Beneficial microbes offer a great potential for plant growth during stresses in an economical manner. Moreover, they promote plant growth with regulating phytohormones, nutrient acquisition, siderophore synthesis, and induce antioxidant system. Besides, acquired or induced systemic resistance also counteracts biotic stresses. The phytomicrobiome exploration is crucial to determine the growth-promoting traits, colonization, and protection of plants from adversities caused by stresses. Further, the intercommunications among rhizosphere through a direct/indirect manner facilitate growth and form complex network. The phytomicrobiome communications are essential for promoting sustainable agriculture where microbes act as ecological engineers for environment. In this review, we have reviewed our building knowledge about the role of microbes in plant defense and stress-mediated alterations within the phytomicrobiomes. We have depicted the defense biome concept that infers the design of phytomicrobiome communities and their fundamental knowledge about plant-microbe interactions for developing plant probiotics.
Collapse
Affiliation(s)
- Kanika Khanna
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
- Department of Microbiology, DAV University, Jalandhar, India
| | - Sukhmeen Kaur Kohli
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
| | - Nandni Sharma
- Department of Zoology, Guru Nanak Dev University, Amritsar, India
| | - Jaspreet Kour
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
| | - Kamini Devi
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
| | - Tamanna Bhardwaj
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
| | - Shalini Dhiman
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
| | - Arun Dev Singh
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
| | - Neerja Sharma
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
| | - Anket Sharma
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Puja Ohri
- Department of Zoology, Guru Nanak Dev University, Amritsar, India
| | - Renu Bhardwaj
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
| | - Parvaiz Ahmad
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
- Department of Botany, S.P. College Srinagar, Jammu and Kashmir, India
| | - Pravej Alam
- Department of Biology, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Thamer H. Albalawi
- Department of Biology, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| |
Collapse
|
43
|
The Microbially Extended Phenotype of Plants, a Keystone against Abiotic Stress. THE EUROBIOTECH JOURNAL 2022. [DOI: 10.2478/ebtj-2022-0017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Abstract
Background: Climate change affects every region across the globe with heterogeneous effects on local temperatures and precipitation patterns. In plants, sessile organisms, climate change imposes more drastic effects leading to loss of yield or even death. However, plants establish mutualistic interactions with microorganisms that boost plant tolerance against abiotic stresses or strengthen the plant immune system against pathogens, thus, enhancing their survival and fitness. Moreover, in the wild, microbial endophytes provide important ecosystem services.
Purpose and scope: Little we know about the mechanisms of response against the adverse effects of climate change on natural populations of wild plants and even less about the potential role played by microbial biostimulants. In this article, we review the effects of biostimulants on plant responses against abiotic stresses, with a particular focus on the role of mycorrhizas and leaf endophytes.
Results: We have reviewed the effects of the main abiotic stresses in plants, the mechanisms that plants use to face these abiotic challenges, and the interaction plant-biostimulant-abiotic stress, highlighting the primary responses and parameters to evaluate different plant responses.
Conclusion: Abiotic stresses can check the phenotypic plasticity of plants and also trigger a complex and heterogeneous array of responses to face different abiotic stresses, and beneficial microorganisms do play an essential role in enhancing such responses. Our laboratory has initiated a project to characterise microbial populations associated with plants from wild areas and analyse their potential role in aiding the plants to cope with abiotic stresses.
Collapse
|
44
|
Samet M, Ghazala I, Karray F, Abid C, Chiab N, Nouri-Ellouz O, Sayadi S, Gargouri-Bouzid R. Isolation of bacterial strains from compost teas and screening of their PGPR properties on potato plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:75365-75379. [PMID: 35653020 DOI: 10.1007/s11356-022-21046-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
The beneficial effect of compost and compost tea on plant growth and protection is mainly associated with the microbial diversity and the presence of bacteria with plant growth-promoting effect. PGPR are considered as eco-friendly bio-fertilizers that may reduce the use of chemical pesticides and fertilizers. Three composts (AT, A10, and A30) were previously prepared from industrial wastes (olive mill wastewater, olive pomace, coffee ground, and phosphogypsum). In the present study, we isolated three bacterial strains from the compost teas. The phylogenetic identification of these bacterial strains (B.AT, B.A10, and B.A30) showed that they correspond to Serratia liquefaciens (B.AT and B.A10) and Achromobacter spanius (B.A30) species. A further characterization of the PGPR traits of these bacteria showed that they produce siderophore, exopolysaccharides, and IAA. Their effect on potato plant growth, yields, and tuber quality was performed under field culture conditions. Results showed that these strains can be characterized as PGPR, the best effect on potato plant growth was observed with Serratia liquefaciens (B.AT), the best yield and tuber quality was observed with Serratia liquefaciens (B.A10) while bacterial treatment with Achromobacter spanius (B.A30) is a Cd-tolerant PGPR.
Collapse
Affiliation(s)
- Mariem Samet
- Laboratory of Plant Improvement and Agro-Resources Valorization, National School of Engineers of Sfax, road of Soukra Km 4, B.P 1173, 3038, Sfax, Tunisia.
| | - Imen Ghazala
- Laboratory of Plant Improvement and Agro-Resources Valorization, National School of Engineers of Sfax, road of Soukra Km 4, B.P 1173, 3038, Sfax, Tunisia
| | - Fatma Karray
- Laboratory of Environmental Bioprocesses, Sfax Biotechnology Center, Road of Sidi Mansour km6, BP 1177, 3018, Sfax, Tunisia
| | - Cyrine Abid
- Laboratory of Plant Improvement and Agro-Resources Valorization, National School of Engineers of Sfax, road of Soukra Km 4, B.P 1173, 3038, Sfax, Tunisia
| | - Nour Chiab
- Laboratory of Plant Improvement and Agro-Resources Valorization, National School of Engineers of Sfax, road of Soukra Km 4, B.P 1173, 3038, Sfax, Tunisia
| | - Oumèma Nouri-Ellouz
- Laboratory of Plant Improvement and Agro-Resources Valorization, National School of Engineers of Sfax, road of Soukra Km 4, B.P 1173, 3038, Sfax, Tunisia
| | - Sami Sayadi
- Biotechnology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - Radhia Gargouri-Bouzid
- Laboratory of Plant Improvement and Agro-Resources Valorization, National School of Engineers of Sfax, road of Soukra Km 4, B.P 1173, 3038, Sfax, Tunisia
| |
Collapse
|
45
|
Farid M, Sajjad A, Asam ZUZ, Zubair M, Rizwan M, Abbas M, Farid S, Ali S, Alharby HF, Alzahrani YM, Alabdallah NM. Phytoremediation of contaminated industrial wastewater by duckweed (Lemna minor L.): Growth and physiological response under acetic acid application. CHEMOSPHERE 2022; 304:135262. [PMID: 35688199 DOI: 10.1016/j.chemosphere.2022.135262] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 06/01/2022] [Accepted: 06/04/2022] [Indexed: 06/15/2023]
Abstract
Extensive usage of heavy metals (HMs) in chemical reactions and processes eventually contaminate the environmental segments and is currently a major environmental concern. HMs such as cadmium (Cd), copper (Cu), lead (Pb), chromium (Cr) and nickel (Ni) are considered the most harmful pollutants as they have adequate potential of bioaccumulation. The current research was carried out to assess the HMs toxicity of textile and tannery wastewater and effect of acetic acid (AA) on phytoextraction of HMs by duckweed (Lemna minor L.) in a hydroponic system. Plants were treated with different treatments having different hydroponic concentrations of AA (5 and 10 mM) and textile and tannery effluents, where these two effuents were equally mixed and then diluted with good quality water with different ratios (25, 50, 75, and 100%) along with three replications of each treatment. Results were recorded for growth attributes, chlorophylls, antioxidant enzymes, electrolytic leakage, reactive oxygen species and HMs accumulation in plants. HMs accumulation disrupts the growth parameters, chlorophyll contents and carotenoids contents along with increased activities of antioxidant enzyme such as catalases (CAT), superoxide dismutase (SOD), peroxidases (POD) and ascorbate peroxidase (APX). Addition of AA in the hydroponic experimental system significantly improves the antioxidant defense mechanism and alleviated the HM induced toxicity in plants. Cr, Cd, Pb, Cu and Ni concentrations were maximally increased up to 116 & 422%, 106 & 416%, 72 & 351%, 76 & 346%, and 41 & 328% respectively under AA (10 mM) application. The results revealed that duckweed can be applied as potential phyto-remedy to treat industrial wastewater.
Collapse
Affiliation(s)
- Mujahid Farid
- Department of Environmental Sciences, University of Gujrat, Hafiz Hayat Campus, Gujrat, 50700, Pakistan.
| | - Amina Sajjad
- Department of Environmental Sciences, University of Gujrat, Hafiz Hayat Campus, Gujrat, 50700, Pakistan
| | - Zaki Ul Zaman Asam
- Department of Environmental Sciences, University of Gujrat, Hafiz Hayat Campus, Gujrat, 50700, Pakistan
| | - Muhammad Zubair
- Department of Chemistry, University of Gujrat, Gujrat, 50700, Pakistan
| | - Muhammad Rizwan
- Department of Environmental Sciences, Governmemnt College University, Faisalabad, 38000, Pakistan.
| | - Mohsin Abbas
- Department of Environmental Sciences, University of Gujrat, Hafiz Hayat Campus, Gujrat, 50700, Pakistan
| | - Sheharyaar Farid
- Faculty of Science and Technology, University of the Basque Country, Basque, Spain
| | - Shafaqat Ali
- Department of Environmental Sciences, Governmemnt College University, Faisalabad, 38000, Pakistan; Department of Biological Sciences and Technology, China Medical University, Taichung, 40402, Taiwan.
| | - Hesham F Alharby
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Yahya M Alzahrani
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Nadiyah M Alabdallah
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, 31441, Dammam, Saudi Arabia
| |
Collapse
|
46
|
Li H, Wu Y, Tang Y, Fang B, Luo P, Yang L, Jiang Q. A manganese-oxidizing bacterium-Enterobacter hormaechei strain DS02Eh01: Capabilities of Mn(II) immobilization, plant growth promotion and biofilm formation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 309:119775. [PMID: 35843452 DOI: 10.1016/j.envpol.2022.119775] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 07/06/2022] [Accepted: 07/10/2022] [Indexed: 06/15/2023]
Abstract
While biogenic Mn oxides (BioMnOx) generated by Mn(II)-oxidizing bacteria (MOB) have attracted increasing attention, a MOB strain isolated from Mn-polluted sediments was identified and assigned as Enterobacter hormaechei DS02Eh01. Its Mn(II) immobilization activity, plant growth-promoting traits, and biofilm formation capability were investigated. The results showed that strain DS02Eh01 was found to be able to tolerate Mn(II) up to 122 mM. The strain immobilized Mn(II) in aquatic media mainly through extracellular adsorption, bio-oxidation and pH-induced precipitation as well as manganese oxidation. DS02Eh01-derived BioMnOx are negatively charged and have a larger specific surface area (86.70 m2/g) compared to the previously reported BioMnOx. The strain can immobilize Mn(II) at extreme levels, for instance, when it was exposed to 20 mM Mn(II), about 59% of Mn(II) were found immobilized and 17% of Mn(II) were converted to MnOx. The SEM and TEM observation revealed that the DS02Eh01-derived BioMnOx were aggregates doped with granules and microbial pellets. The precipitated Mn(II) and the Mn(III)/Mn(IV) oxides co-existed in BioMnOx, in which Mn(II) and Mn(IV) were found dominant with Mn(II) accounting for 49.6% and Mn(IV) accounting for 41.3%. DS02Eh01 possesses plant growth-promoting traits and biofilm formation capacity even under Mn(II) exposure. Mn(II) exposure at 5 mM was found to stimulate strain DS02Eh01 to form biofilms, from which, the extracted EPS was mainly composed of aromatic proteins. This study reveals that E. hormaechei strain DS02Eh01 possesses the potential in environmental ecoremediation via coupling processes of macrophytes extraction, biochemical immobilization and biosorption.
Collapse
Affiliation(s)
- Huilan Li
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials & MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China; Key Laboratory of Environmental Protection (Guangxi University), Education Department of Guangxi Zhuang Autonomous Region, Nanning, 530004, China
| | - Yu Wu
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials & MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China; Key Laboratory of Environmental Protection (Guangxi University), Education Department of Guangxi Zhuang Autonomous Region, Nanning, 530004, China
| | - Yankui Tang
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials & MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China; Key Laboratory of Environmental Protection (Guangxi University), Education Department of Guangxi Zhuang Autonomous Region, Nanning, 530004, China.
| | - Bo Fang
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials & MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China; Key Laboratory of Environmental Protection (Guangxi University), Education Department of Guangxi Zhuang Autonomous Region, Nanning, 530004, China
| | - Penghong Luo
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials & MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China; Key Laboratory of Environmental Protection (Guangxi University), Education Department of Guangxi Zhuang Autonomous Region, Nanning, 530004, China
| | - Luling Yang
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials & MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China; Key Laboratory of Environmental Protection (Guangxi University), Education Department of Guangxi Zhuang Autonomous Region, Nanning, 530004, China
| | - Qiming Jiang
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials & MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China; Key Laboratory of Environmental Protection (Guangxi University), Education Department of Guangxi Zhuang Autonomous Region, Nanning, 530004, China
| |
Collapse
|
47
|
Liu N, Liu Q, Min J, Zhang S, Li S, Chen Y, Dai J. Specific bacterial communities in the rhizosphere of low-cadmium and high‑zinc wheat (Triticum aestivum L.). THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:156484. [PMID: 35667435 DOI: 10.1016/j.scitotenv.2022.156484] [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: 12/27/2021] [Revised: 05/31/2022] [Accepted: 06/01/2022] [Indexed: 06/15/2023]
Abstract
Microorganisms can modulate the contents of cadmium (Cd) and zinc (Zn) in wheat grains. Increasing the essential nutrient element Zn and decreasing the toxic element Cd in wheat grains can significantly improve human health. To characterize the specific bacterial communities associated with Cd and Zn accumulation in wheat, we conducted a field experiment by planting wheat cultivars differing in their capacity for Cd and Zn accumulation. The grain Cd contents in wheat cultivars YN23 (0.078 mg kg-1), JN17 (0.080 mg kg-1), YN836 (0.081 mg kg-1) and LM2 (0.091 mg kg-1) were significantly lower than those in ZM32 (0.16 mg kg-1). The Zn contents were significantly higher in the grains of JN17 (44.36 mg kg-1), LM2 (42.22 mg kg-1) and ZM32 (43.19 mg kg-1) than YN23 (27.05 mg kg-1) and YN836 (29.70 mg kg-1). On the basis of contents and bio-concentration factors of Cd and Zn in wheat grain, JN17 and LM2 were identified as low-Cd- and high-Zn-accumulating cultivars, YN23 and YN836 were low-Cd- and low-Zn-accumulating cultivars, and ZM23 was a high-Cd- and high-Zn-accumulating cultivar. The relative abundance values of Gemmatimonadaceae, Sphingomonadaceae and Beijerinckiaceae in the rhizospheres of low-Cd cultivars were significantly higher than those of high-Cd cultivars. High-Zn cultivars had higher abundance of Rhodanobacteraceae in the rhizosphere than did low-Zn cultivars. The low-Cd- and high-Zn-accumulating cultivars were enriched in Alphaproteobacteria and Gemmatimonadaceae, and strengthened nitrification function including aerobic_ammonia_oxidation and aerobic_nitrite_oxidation in the rhizosphere soil, thus contributing to the decreased Cd and increased Zn contents in wheat grains. Microbial technology is a promising method to control the contents of Cd and Zn in wheat grains.
Collapse
Affiliation(s)
- Na Liu
- College of Resource and Environment, Shanxi Agricultural University, Taigu 030801, China; Environment Research Institute, Shandong University, Qingdao 266237, China; Shanxi Key Laboratory of Edible Fungi for Loess Plateau, Taigu 030801, China
| | - Qian Liu
- Shandong General Station of Agricultural Environmental Protection and Rural Energy, Jinan 250000, China
| | - Jianmei Min
- Shandong General Station of Agricultural Environmental Protection and Rural Energy, Jinan 250000, China
| | - Shujuan Zhang
- Shandong General Station of Agricultural Environmental Protection and Rural Energy, Jinan 250000, China
| | - Shuangshuang Li
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Yihui Chen
- Environment Research Institute, Shandong University, Qingdao 266237, China; Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jiulan Dai
- Environment Research Institute, Shandong University, Qingdao 266237, China.
| |
Collapse
|
48
|
Kuang W, Sanow S, Kelm JM, Müller Linow M, Andeer P, Kohlheyer D, Northen T, Vogel JP, Watt M, Arsova B. N-dependent dynamics of root growth and nitrate and ammonium uptake are altered by the bacterium Herbaspirillum seropedicae in the cereal model Brachypodium distachyon. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:5306-5321. [PMID: 35512445 PMCID: PMC9440436 DOI: 10.1093/jxb/erac184] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 05/04/2022] [Indexed: 06/14/2023]
Abstract
Nitrogen (N) fixation in cereals by root-associated bacteria is a promising solution for reducing use of chemical N fertilizers in agriculture. However, plant and bacterial responses are unpredictable across environments. We hypothesized that cereal responses to N-fixing bacteria are dynamic, depending on N supply and time. To quantify the dynamics, a gnotobiotic, fabricated ecosystem (EcoFAB) was adapted to analyse N mass balance, to image shoot and root growth, and to measure gene expression of Brachypodium distachyon inoculated with the N-fixing bacterium Herbaspirillum seropedicae. Phenotyping throughput of EcoFAB-N was 25-30 plants h-1 with open software and imaging systems. Herbaspirillum seropedicae inoculation of B. distachyon shifted root and shoot growth, nitrate versus ammonium uptake, and gene expression with time; directions and magnitude depended on N availability. Primary roots were longer and root hairs shorter regardless of N, with stronger changes at low N. At higher N, H. seropedicae provided 11% of the total plant N that came from sources other than the seed or the nutrient solution. The time-resolved phenotypic and molecular data point to distinct modes of action: at 5 mM NH4NO3 the benefit appears through N fixation, while at 0.5 mM NH4NO3 the mechanism appears to be plant physiological, with H. seropedicae promoting uptake of N from the root medium.Future work could fine-tune plant and root-associated microorganisms to growth and nutrient dynamics.
Collapse
Affiliation(s)
- Weiqi Kuang
- College of Life and Environmental Sciences, Hunan University of Arts and Science, 415000 Changde, China
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Innovation Academy for Seed Design, Chinese Academy of Sciences, 410125 Changsha, China
| | - Stefan Sanow
- IBG-2 Plant Sciences, Institut für Bio- und Geowissenschaften, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Jana M Kelm
- IBG-2 Plant Sciences, Institut für Bio- und Geowissenschaften, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Mark Müller Linow
- IBG-2 Plant Sciences, Institut für Bio- und Geowissenschaften, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Peter Andeer
- Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Dietrich Kohlheyer
- IBG-1 Biotechnology, Institut für Bio- und Geowissenschaften, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Trent Northen
- Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- The Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - John P Vogel
- Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- The Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Michelle Watt
- IBG-2 Plant Sciences, Institut für Bio- und Geowissenschaften, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
- Faculty of Science, The University of Melbourne, Melbourne, Australia
| | | |
Collapse
|
49
|
Wang K, Li Y, Liang C. Closed-loop evaluation on potential of three oil crops in remediation of Cd-contaminated soil. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 316:115123. [PMID: 35576704 DOI: 10.1016/j.jenvman.2022.115123] [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: 11/10/2021] [Revised: 04/09/2022] [Accepted: 04/18/2022] [Indexed: 06/15/2023]
Abstract
Cd-contaminated farmlands threaten food security and safety by inhibiting crop growth and Cd accumulating in edible parts. Phytoremediation is a promising option to remove Cd from farmland soil. An ideal option is to remediate Cd and produce crops simultaneously on the contaminated soil. Therefore, we chose widely planted oil crops (soybean, sunflower and rape) as experimental materials, cultured in pots filled with soils contaminated with different concentrations (10, 20, 50, and 100 mg kg-1) Cd till harvest, and then took a closed-loop method to evaluate the remediation potential of the three oil crops, including the remediating ability, yield, and quality of seeds and environmental risk of pyrolytic biochar. The results show that the order of Cd accumulation capacity in the three oil crops was sunflower > rape > soybean. The yield and quality of the three oil crops were decreased by being treated with different concentrations of Cd. In addition, the order for a decreased degree in yield of the three oil crops was sunflower < rape < soybean, and the order for a decreased degree in protein and fat content was sunflower < soybean < rape. The potential risk of seeds of the three oil crops as food/feed was sunflower/soybean < soybean/sunflower < rape. After pyrolysis of harvested three oil crops, the order for leaching toxicity/leaching potential was sunflower-biochar < soybean-biochar/rape-biochar < rape-biochar/soybean-biochar. All three oil crops could remediate Cd-contaminated soils, and their seeds could generate economic value. Closed-loop evaluation of sunflower proved it might be a good option for removing Cd from farmland soil.
Collapse
Affiliation(s)
- Kaiyue Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Youwei Li
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Chanjuan Liang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou, 215009, China.
| |
Collapse
|
50
|
Use of Biostimulants as a New Approach for the Improvement of Phytoremediation Performance—A Review. PLANTS 2022; 11:plants11151946. [PMID: 35893650 PMCID: PMC9332818 DOI: 10.3390/plants11151946] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/16/2022] [Accepted: 07/20/2022] [Indexed: 11/23/2022]
Abstract
Environmental pollution is one of the most pressing global issues, and it requires priority attention. Environmental remediation techniques have been developed over the years and can be applied to polluted sites, but they can have limited effectiveness and high energy consumption and costs. Bioremediation techniques, on the other hand, represent a promising alternative. Among them, phytoremediation is attracting particular attention, a green methodology that relies on the use of plant species to remediate contaminated sites or prevent the dispersion of xenobiotics into the environment. In this review, after a brief introduction focused on pollution and phytoremediation, the use of plant biostimulants (PBs) in the improvement of the remediation effectiveness is proposed. PBs are substances widely used in agriculture to raise crop production and resistance to various types of stress. Recent studies have also documented their ability to counteract the deleterious effects of pollutants on plants, thus increasing the phytoremediation efficiency of some species. The works published to date, reviewed and discussed in the present work, reveal promising prospects in the remediation of polluted environments, especially for heavy metals, when PBs derived from humic substances, protein and amino acid hydrolysate, inorganic salts, microbes, seaweed, plant extracts, and fungi are employed.
Collapse
|