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Bhatta D, Adhikari A, Kang SM, Kwon EH, Jan R, Kim KM, Lee IJ. Hormones and the antioxidant transduction pathway and gene expression, mediated by Serratia marcescens DB1, lessen the lethality of heavy metals (As, Ni, and Cr) in Oryza sativa L. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 263:115377. [PMID: 37597286 DOI: 10.1016/j.ecoenv.2023.115377] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 08/11/2023] [Accepted: 08/13/2023] [Indexed: 08/21/2023]
Abstract
Microorganisms have recently gained recognition as efficient biological tool for reducing heavy metal toxicity in crops. In this experiment, we isolated a potent heavy metal (As, Ni, and Cr) resistant rhizobacterium Serratia marcescens DB1 and detected its plant growth promoting traits such as phosphate solubilization, gibberellin synthesis, organic acid production and amino acid regulation. Based on these findings, DB1 was further investigated for application in a rice var. Hwayeongbyeo subjected to 1 mM As, 4 mM Ni, and 4 mM Cr stress. The rice plants treated with Cr and Ni appeared healthy but were lethal, indicating unfitness for consumption due to toxic metal deposition, whereas the plants treated with > 1 mM As instantaneously died. Our results showed that DB1 inoculation significantly decreased metal accumulation in the rice shoots. Particularly, Cr uptake dropped by 16.55% and 22.12% in (Cr + DB1) and (Cr + As + Ni + DB1), respectively, As dropped by 48.90% and 35.82% in (As + DB1) and (Cr + As + Ni + DB1), respectively, and Ni dropped by 7.95% and 19.56% in (Ni + DB1) and (Cr + As + Ni + DB1), respectively. These findings were further validated by gene expression analysis results, which showed that DB1 inoculation significantly decreased the expression of OsPCS1 (a phytochelatin synthase gene), OsMTP1 (a metal transporting gene), and OsMTP5 (a gene for the expulsion of excess metal). Moreover, DB1 inoculation considerably enhanced the morphological growth of rice through modulation of endogenous phytohormones (abscisic acid, salicylic acid, and jasmonic acid) and uptake of essential elements such as K and P. These findings indicate that DB1 is an effective biofertilizer that can mitigate heavy metal toxicity in rice crops.
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Affiliation(s)
- Dibya Bhatta
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, South Korea
| | - Arjun Adhikari
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, South Korea
| | - Sang-Mo Kang
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, South Korea
| | - Eun-Hae Kwon
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, South Korea
| | - Rahmatullah Jan
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, South Korea
| | - Kyung-Min Kim
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, South Korea
| | - In-Jung Lee
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, South Korea.
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Koohkan H, Mortazavi MS, Golchin A, Najafi-Ghiri M, Golkhandan M, Akbarzadeh-Chomachaei G, Saraji F. The effect of petroleum levels on some soil biological properties under phytoremediation and bioaugmentation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:60618-60637. [PMID: 37036650 DOI: 10.1007/s11356-023-26730-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 03/26/2023] [Indexed: 04/11/2023]
Abstract
With the development of industries and excessive use of petroleum compounds, petroleum pollution has become a serious threat to the environment. The aim of this study was to the effect of petroleum levels on the biological activities of soil affected by phytoremediation and bioaugmentation. A surface soil sample was collected from the polluted areas around Bandar Abbas Oil Refinery Company, and the petroleum-degrading bacteria were isolated. M. yunnanensis (native) was selected among the isolated colonies for further experiment. The used soil in this study was a surface soil collected from Baghu region of Bandar Abbas, Sothern Iran, and treatments were added to soil samples. To evaluate removal of petroleum levels (0, 4, and 8%) from the soil by phytoremediation (control, sorghum, barley, and bermudagrass) and bioaugmentation (control, A. brasilense (non-native) and M. yunnanensis) and bioaugmented phytoremediation, a factorial pot experiment with completely randomized design and three replications was performed. The results demonstrated that sorghum and bermudagrass were more resistant than barley to the toxic effects of petroleum. Positive effect of bacteria on dry weight in polluted soil was greater than in the non-polluted soil. The degradation of petroleum reaches 77% in sorghum + M. yunanesis + 4% petroleum. Plants had stronger ability to degrade total petroleum hydrocarbon (TPH), while bacteria could better degrade polyaromatic hydrocarbons (PAHs). Application of bacteria and plants stimulated soil biological characteristics (dehydrogenase, arylsulfatase, lipase, bacterial population, and respiration) in polluted soil. Among measured enzymes, dehydrogenase exhibited a stronger response to petroleum levels. Four-percent level had greater irritating effect on soil biological properties. Plants and bacteria rely on differences in biological properties to attain synergy in petroleum degradation. Results indicated that M. yunnanensis has a high ability to remove petroleum from soil, and plants enhance the efficiency of this bacterium.
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Affiliation(s)
- Hadi Koohkan
- Agricultural Education and Extension Research Organization, Persian Gulf and Oman Sea Ecological Research Institute, Iranian Fisheries Science Research Institute, Bandar Abbas, Hormozgan, Iran.
| | - Mohammad Seddiq Mortazavi
- Agricultural Education and Extension Research Organization, Persian Gulf and Oman Sea Ecological Research Institute, Iranian Fisheries Science Research Institute, Bandar Abbas, Hormozgan, Iran
| | - Ahmad Golchin
- Soil Science Department, Faculty of Agriculture, Zanjan University of Zanjan, Zanjan, Iran
| | - Mehdi Najafi-Ghiri
- College of Agriculture and Natural Resources of Darab, Shiraz University, Darab, Iran
| | | | - Gholamali Akbarzadeh-Chomachaei
- Agricultural Education and Extension Research Organization, Persian Gulf and Oman Sea Ecological Research Institute, Iranian Fisheries Science Research Institute, Bandar Abbas, Hormozgan, Iran
| | - Fereshteh Saraji
- Agricultural Education and Extension Research Organization, Persian Gulf and Oman Sea Ecological Research Institute, Iranian Fisheries Science Research Institute, Bandar Abbas, Hormozgan, Iran
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Dhawi F. The Role of Plant Growth-Promoting Microorganisms (PGPMs) and Their Feasibility in Hydroponics and Vertical Farming. Metabolites 2023; 13:metabo13020247. [PMID: 36837866 PMCID: PMC9964210 DOI: 10.3390/metabo13020247] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/06/2023] [Accepted: 02/08/2023] [Indexed: 02/11/2023] Open
Abstract
There are many reasons for the increase in hydroponics/soil-free systems in agriculture, and these systems have now advanced to the form of vertical farming. The sustainable use of space, the reduction in water use compared to soil-based agriculture, the lack of pesticides, the ability to control nutrient inputs, and the implementation of user-friendly technology for environmental control and harvesting are all factors that have made the global market for vertical farming predicted to reach more than USD 10.02 billion by 2027. By comparison, soil-based agriculture consumes 20 times more water, and some agricultural practices promote soil deterioration and cause environmental pollution. Plant growth-promoting microorganisms (PGPMs) have been used extensively in traditional agriculture to enhance plant growth, environmental stress tolerance, and the efficacy of phytoremediation in soil-based farming. Due to the controlled atmosphere in hydroponics and vertical farms, there is strong potential to maximize the use of PGPMs. Here, we review the leveraging of plant growth-promoting microorganism mechanisms in hydroponics and vertical farming. We recommend a synchronized PGPM treatment using a biostimulant extract added to the hydroponic medium while also pre-treating seeds or seedlings with a microbial suspension for aquaponic and aeroponic systems.
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Affiliation(s)
- Faten Dhawi
- Agricultural Biotechnology Department, College of Agricultural and Food Sciences, King Faisal University, Al-Ahsa 31982, Saudi Arabia
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4
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Li W, Li WB, Xing LJ, Guo SX. Effect of arbuscular mycorrhizal fungi (AMF) and plant growth-promoting rhizobacteria (PGPR) on microorganism of phenanthrene and pyrene contaminated soils. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2022; 25:240-251. [PMID: 35549569 DOI: 10.1080/15226514.2022.2071832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A pot experiment was performed to investigate the effect of phytoremediation (CK, using tall fescue), fungi remediation (GV, using Glomus versiforme), bacterial remediation (PS, using Pseudomonas fluorescens Ps2-6), and microbial-phytoremediation (GVPS, using three species) on removing polycyclic aromatic hydrocarbons (PAHs) and the microbial diversity in soils. Inoculation with G. versiforme and P. fluorescens could increase the biomass of tall fescue and the accumulation of phenanthrene (PHE) and pyrene (PYR) in plants. Among them, the highest PHE and PYR removal efficiencies and highest biomass of tall fescue were observed in the GVPS treatment and the microbial diversity in contaminated soil was changed, the result revealed that Proteobacteria and Ascomycota were the dominant bacterial phylum and fungal phylum in all treatments, while more Proteobacteria were detected in GVPS treatment. At the genus level, the abundance of Sphingomonas (3.17%), Pseudomonas (2.05%), and Fusarium (8.65%) treated with GVPS increased compared with other treatments. These pieces of evidence contribute to a better understanding of the mechanisms involved in the combined microbial-phytoremediation strategies for PAHs-contaminated soils, especially the effects of microbial-phytoremediation on rhizosphere microbial diversity.
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Affiliation(s)
- Wei Li
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, China
| | - Wen-Bin Li
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, China
| | - Li-Jun Xing
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, China
| | - Shao-Xia Guo
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, China
- Institute of Mycorrhizal Biotechnology, Qingdao Agricultural University, Qingdao, China
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5
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Mansotra P, Sharma P, Sirari A, Aggarwal N. Ecological performance of multifunctional pesticide tolerant strains of Mesorhizobium sp. in chickpea with recommended pendimethalin, ready-mix of pendimethalin and imazethpyr, carbendazim and chlorpyrifos application. Arch Microbiol 2022; 204:117. [PMID: 34985559 DOI: 10.1007/s00203-021-02628-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/16/2021] [Accepted: 09/30/2021] [Indexed: 11/02/2022]
Abstract
The present study was designed to screen the Mesorhizobium strains (50) for tolerance with four recommended pesticides in chickpea. In-vitro, robust pesticide tolerant strains were developed in pesticides amended media over several generations. Further, verification of the multifunctional traits of pesticide tolerant mesorhizobia under pesticide stress was conducted in-vitro. Among different pesticides, significantly high tolerance in Mesorhizobium strains was observed with recommended doses of pendimethalin (37%) and ready-mix (36%) followed by chlorpyrifos (31%) and carbendazim (30%), on an overall basis. Based on multifunctional traits, Mesorhizobium strains viz. MR2, MR17 and recommended MR33 were the most promising. Ecological performance of the potential Mesorhizobium strains alone and in dual-inoculation with recommended PGP rhizobacterium strain RB-1 (Pseudomonas argenttinensis JX239745.1) was subsequently analyzed in field following standard pesticide application in PBG-7 and GPF-2 chickpea varieties for two consecutive rabi seasons (2015 and 2016). Dual-inoculant treatments; recommended RB-1 + MR33 (4.1%) and RB-1 + MR2 (3.8%) significantly increased the grain yield over Mesorhizobium alone treatments viz MR33 and MR2, respectively. Grain yield in PBG7 variety was significantly affected (7.3%) by the microbial inoculant treatments over GPF2 variety. Therefore, the potential pesticide tolerant strains MR2 and MR33 can be further explored as compatible dual-inoculants with recommended RB-1 for chickpea under environmentally stressed conditions (pesticide application) at multiple locations. Our approach using robust multifunctional pesticide tolerant Mesorhizobium for bio-augmentation of chickpea might be helpful in the formulation of effective bio-inoculants consortia in establishing successful chickpea-Mesorhizobium symbiosis.
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Affiliation(s)
- Pallavi Mansotra
- Department of Microbiology, Punjab Agricultural University, Ludhiana, 141004, India.
| | - Poonam Sharma
- Pulses Section, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, 141004, India
| | - Asmita Sirari
- Pulses Section, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, 141004, India
| | - Navneet Aggarwal
- South Australia Research and Development Institute, Claire Research Centre, Clare, South Australia
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ZHAO Y, CHENG Q, SHEN Z, FAN B, XU Y, CAO Y, PENG F, ZHAO J, XUE B. Structure of prodigiosin from Serratia marcescens NJZT-1 and its cytotoxicity on TSC2-null cells. FOOD SCIENCE AND TECHNOLOGY 2021. [DOI: 10.1590/fst.35719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Qi CHENG
- Nanjing Medical University, China
| | | | - Ben FAN
- Nanjing Forestry University, China
| | - Yan XU
- Nanjing Forestry University, China
| | | | | | | | - Bin XUE
- Nanjing Medical University, China; China Pharmaceutical University, China
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7
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Hoang SA, Lamb D, Seshadri B, Sarkar B, Choppala G, Kirkham MB, Bolan NS. Rhizoremediation as a green technology for the remediation of petroleum hydrocarbon-contaminated soils. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123282. [PMID: 32634659 DOI: 10.1016/j.jhazmat.2020.123282] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 06/18/2020] [Accepted: 06/19/2020] [Indexed: 05/22/2023]
Abstract
Rhizoremediation is increasingly becoming a green and sustainable alternative to physico-chemical methods for remediation of contaminated environments through the utilization of symbiotic relationship between plants and their associated soil microorganisms in the root zone. The overall efficiency can be enhanced by identifying suitable plant-microbe combinations for specific contaminants and supporting the process with the application of appropriate soil amendments. This approach not only involves promoting the existing activity of plants and soil microbes, but also introduces an adequate number of microorganisms with specific catabolic activity. Here, we reviewed recent literature on the main mechanisms and key factors in the rhizoremediation process with a particular focus on soils contaminated with total petroleum hydrocarbon (TPH). We then discuss the potential of different soil amendments to accelerate the remediation efficiency based on biostimulation and bioaugmentation processes. Notwithstanding some successes in well-controlled environments, rhizoremediation of TPH under field conditions is still not widespread and considered less attractive than physico-chemical methods. We catalogued the major pitfalls of this remediation approach at the field scale in TPH-contaminated sites and, provide some applicable situations for the future successful use of in situ rhizoremediation of TPH-contaminated soils.
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Affiliation(s)
- Son A Hoang
- Global Centre for Environmental Remediation (GCER), Advanced Technology Centre (ATC) Building, Faculty of Science, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia; Division of Urban Infrastructural Engineering, Mien Trung University of Civil Engineering, Phu Yen 56000, Viet Nam
| | - Dane Lamb
- Global Centre for Environmental Remediation (GCER), Advanced Technology Centre (ATC) Building, Faculty of Science, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
| | - Balaji Seshadri
- Global Centre for Environmental Remediation (GCER), Advanced Technology Centre (ATC) Building, Faculty of Science, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
| | - Binoy Sarkar
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Girish Choppala
- Global Centre for Environmental Remediation (GCER), Advanced Technology Centre (ATC) Building, Faculty of Science, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
| | - M B Kirkham
- Department of Agronomy, Kansas State University, Manhattan, KS, United States
| | - Nanthi S Bolan
- Global Centre for Environmental Remediation (GCER), Advanced Technology Centre (ATC) Building, Faculty of Science, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia.
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8
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Guo Y, Lin Q, Chen L, Carballar-Lejarazú R, Zhang A, Shao E, Liang G, Hu X, Wang R, Xu L, Zhang F, Wu S. Characterization of bacterial communities associated with the pinewood nematode insect vector Monochamus alternatus Hope and the host tree Pinus massoniana. BMC Genomics 2020; 21:337. [PMID: 32357836 PMCID: PMC7195709 DOI: 10.1186/s12864-020-6718-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Accepted: 04/05/2020] [Indexed: 01/24/2023] Open
Abstract
Background Monochamus alternatus Hope is one of the insect vectors of pinewood nematode (Bursaphelenchus xylophilus), which causes the destructive pine wilt disease. The microorganisms within the ecosystem, comprising plants, their environment, and insect vectors, form complex networks. This study presents a systematic analysis of the bacterial microbiota in the M. alternatus midgut and its habitat niche. Methods Total DNA was extracted from 20 types of samples (with three replicates each) from M. alternatus and various tissues of healthy and infected P. massoniana (pines). 16S rDNA amplicon sequencing was conducted to determine the composition and diversity of the bacterial microbiota in each sample. Moreover, the relative abundances of bacteria in the midgut of M. alternatus larvae were verified by counting the colony-forming units. Results Pinewood nematode infection increased the microbial diversity in pines. Bradyrhizobium, Burkholderia, Dyella, Mycobacterium, and Mucilaginibacter were the dominant bacterial genera in the soil and infected pines. These results indicate that the bacterial community in infected pines may be associated with the soil microbiota. Interestingly, the abundance of the genus Gryllotalpicola was highest in the bark of infected pines. The genus Cellulomonas was not found in the midgut of M. alternatus, but it peaked in the phloem of infected pines, followed by the phloem of heathy pines. Moreover, the genus Serratia was not only present in the habitat niche, but it was also enriched in the M. alternatus midgut. The colony-forming unit assays showed that the relative abundance of Serratia sp. peaked in the midgut of instar II larvae (81%). Conclusions Overall, the results indicate that the bacterial microbiota in the soil and in infected pines are correlated. The Gryllotalpicola sp. and Cellulomonas sp. are potential microbial markers of pine wilt disease. Additionally, Serratia sp. could be an ideal agent for expressing insecticidal protein in the insect midgut by genetic engineering, which represents a new use of microbes to control M. alternatus.
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Affiliation(s)
- Yajie Guo
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350000, China.,Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou, 350000, China.,State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, 350000, China
| | - Qiannan Lin
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350000, China.,Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou, 350000, China
| | - Lyuyi Chen
- Universityof California, Irvine, CA, 92697-4025, USA
| | - Rebeca Carballar-Lejarazú
- Department of Microbiology & Molecular Genetics, University of California, Irvine, CA, 92697-4025, USA
| | - Aishan Zhang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, 350000, China
| | - Ensi Shao
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, 350000, China
| | - Guanghong Liang
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350000, China.,Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou, 350000, China
| | - Xia Hu
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350000, China.,Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou, 350000, China
| | - Rong Wang
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350000, China.,Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou, 350000, China
| | - Lei Xu
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Feiping Zhang
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350000, China. .,Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou, 350000, China.
| | - Songqing Wu
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350000, China. .,Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou, 350000, China. .,State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, 350000, China.
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Waigi MG, Wang J, Yang B, Gudda FO, Ling W, Liu J, Gao Y. Endophytic Bacteria in in planta Organopollutant Detoxification in Crops. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 252:1-50. [PMID: 31451946 DOI: 10.1007/398_2019_33] [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] [Indexed: 06/10/2023]
Abstract
Microbe-assisted organopollutant removal, or in planta crop decontamination, is based on an interactive system between organopollutant-degrading endophytic bacteria (DEBOP) and crops in alleviating organic toxins in plants. This script focuses on the fast-growing body of literature that has recently bloomed in organopollutant control in agricultural plants. The various facets of DEBOP under study include their colonization, distribution, plant growth-promoting mechanisms, and modes of action in the detoxification process in plants. Also, an assessment of the biotechnological advances, advantages, and bottlenecks in accelerating the implementation of this decontamination strategy will be undertaken. The highlighted key research directions from this review will shape the future of agro-environmental sustainability and preservation of human health.
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Affiliation(s)
- Michael Gatheru Waigi
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Jian Wang
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Bing Yang
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Fredrick Owino Gudda
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Wanting Ling
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Juan Liu
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Yanzheng Gao
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China.
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10
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Matteoli FP, Passarelli-Araujo H, Reis RJA, da Rocha LO, de Souza EM, Aravind L, Olivares FL, Venancio TM. Genome sequencing and assessment of plant growth-promoting properties of a Serratia marcescens strain isolated from vermicompost. BMC Genomics 2018; 19:750. [PMID: 30326830 PMCID: PMC6192313 DOI: 10.1186/s12864-018-5130-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 09/27/2018] [Indexed: 01/11/2023] Open
Abstract
Background Plant-bacteria associations have been extensively studied for their potential in increasing crop productivity in a sustainable manner. Serratia marcescens is a species of Enterobacteriaceae found in a wide range of environments, including soil. Results Here we describe the genome sequencing and assessment of plant growth-promoting abilities of S. marcescens UENF-22GI, a strain isolated from mature cattle manure vermicompost. In vitro, S. marcescens UENF-22GI is able to solubilize P and Zn, to produce indole compounds (likely IAA), to colonize hyphae and counter the growth of two phytopathogenic fungi. Inoculation of maize with this strain remarkably increased seedling growth and biomass under greenhouse conditions. The S. marcescens UENF-22GI genome has 5 Mb, assembled in 17 scaffolds comprising 4662 genes (4528 are protein-coding). No plasmids were identified. S. marcescens UENF-22GI is phylogenetically placed within a clade comprised almost exclusively of non-clinical strains. We identified genes and operons that are likely responsible for the interesting plant-growth promoting features that were experimentally described. The S. marcescens UENF-22GI genome harbors a horizontally-transferred genomic island involved in antibiotic production, antibiotic resistance, and anti-phage defense via a novel ADP-ribosyltransferase-like protein and possible modification of DNA by a deazapurine base, which likely contributes to its competitiveness against other bacteria. Conclusions Collectively, our results suggest that S. marcescens UENF-22GI is a strong candidate to be used in the enrichment of substrates for plant growth promotion or as part of bioinoculants for agriculture. Electronic supplementary material The online version of this article (10.1186/s12864-018-5130-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Filipe P Matteoli
- Laboratório de Química e Função de Proteínas e Peptídeos, Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil
| | - Hemanoel Passarelli-Araujo
- Laboratório de Química e Função de Proteínas e Peptídeos, Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil
| | - Régis Josué A Reis
- Núcleo de Desenvolvimento de Insumos Biológicos para a Agricultura (NUDIBA), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil
| | - Letícia O da Rocha
- Núcleo de Desenvolvimento de Insumos Biológicos para a Agricultura (NUDIBA), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil
| | - Emanuel M de Souza
- Departamento de Bioquímica e Biologia Molecular, Núcleo de Fixação Biológica de Nitrogênio, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - L Aravind
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD, USA
| | - Fabio L Olivares
- Núcleo de Desenvolvimento de Insumos Biológicos para a Agricultura (NUDIBA), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil.
| | - Thiago M Venancio
- Laboratório de Química e Função de Proteínas e Peptídeos, Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil.
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Wu F, An YQ, An Y, Wang XJ, Cheng ZY, Zhang Y, Hou X, Chen CX, Wang L, Bai JG. Acinetobacter calcoaceticus CSY-P13 Mitigates Stress of Ferulic and p-Hydroxybenzoic Acids in Cucumber by Affecting Antioxidant Enzyme Activity and Soil Bacterial Community. Front Microbiol 2018; 9:1262. [PMID: 29963024 PMCID: PMC6010532 DOI: 10.3389/fmicb.2018.01262] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 05/24/2018] [Indexed: 12/02/2022] Open
Abstract
Ferulic acid (FA) and p-hydroxybenzoic acid (PHBA) are main phenolic compounds accumulated in rhizosphere of continuously cropped cucumber, causing stress in plants. Microbial degradation of a mixture of FA and PHBA is not well understood in soil. We isolated a strain CSY-P13 of Acinetobacter calcoaceticus, inoculated it into soil to protect cucumber from FA and PHBA stress, and explored a mechanism underlying the protection. CSY-P13 effectively degraded a mixture of FA and PHBA in culture solution under conditions of 39.37°C, pH 6.97, and 21.59 g L-1 potassium dihydrogen phosphate, giving rise to 4-vinyl guaiacol, vanillin, vanillic acid, and protocatechuic acid. During FA and PHBA degradation, activities of superoxide dismutase (SOD), catalase, ascorbate peroxidase, and dehydroascorbate reductase in CSY-P13 were induced. Inoculated into cucumber-planted soil containing 220 μg g-1 mixture of FA and PHBA, CSY-P13 degraded FA and PHBA in soil, increased plant height, and decreased malonaldehyde, superoxide radical, and hydrogen peroxide levels in leaves. CSY-P13 also enhanced SOD, guaiacol peroxidase, catalase, glutathione peroxidase, ascorbate peroxidase, monodehydroascorbate reductase, dehydroascorbate reductase, and glutathione reductase activities; increased ascorbate and glutathione contents; and elevated transcript levels of copper/zinc SOD, manganese SOD, and catalase in leaves under FA and PHBA. Moreover, CSY-P13 increased phosphatase, catalase, urease, and sucrase activities and changed bacterial richness, diversity, and community composition by high throughput sequencing in cucumber-planted soil supplemented with the mixture of FA and PHBA. So CSY-P13 degrades the mixture of FA and PHBA in soil and mitigates stress from the two phenolic compounds in cucumber by activating antioxidant enzymes, changing soil bacterial community, and inducing soil enzymes.
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Affiliation(s)
- Fenghui Wu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
| | - Yan-Qiu An
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Yanrong An
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Xiu-Juan Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Zeng-Yan Cheng
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Yue Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Xinwei Hou
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Chang-Xia Chen
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Li Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Ji-Gang Bai
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
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Romeh AA, Hendawi MY. Biochemical interactions between Glycine max L. silicon dioxide (SiO 2) and plant growth-promoting bacteria (PGPR) for improving phytoremediation of soil contaminated with fenamiphos and its degradation products. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2017; 142:32-43. [PMID: 29107245 DOI: 10.1016/j.pestbp.2017.01.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 12/24/2016] [Accepted: 01/02/2017] [Indexed: 06/07/2023]
Abstract
Fenamiphos is a systematic nematicide-insecticide used extensively for the control of soil nematodes. Fenamiphos and oxidation products have been known to induce water pollution, soil pollution and ecotoxicological effects on aquatic organisms, as well as heath issues. This contaminant can be removed by phytoremediation. Herein, we tested several strategies to improve the effectiveness of this technology. A combination of G. max plus Pseudomonas fluorescens was more efficient than G. max plus Serratia marcescens or G. max alone in degrading fenamiphos to other metabolites. Three major metabolites, namely fenamiphos sulfoxide (FSO), fenamiphos sulfone (FSO2) and fenamiphos phenol (F-phenol), were detected in roots and leaves in which G. max amended with P. fluorescens or amended with S. marcescens produced a significant accumulation of FSO and FSO2 with higher amounts than for G. max alone. Leaf concentrations of FSO were always higher than in the roots, while FSO2 accumulated significantly more in G. max roots than in G. max leaves. In soil treated with fenamiphos, G. max roots and leaves alone, and in combined effects of plant and microorganisms, resulted in the disappearance of fenamiphos and the appearance of F-SO, F-SO2 and F-phenol, which in turn caused toxic stress in G. max and the resulting production of reactive oxygen species such as H2O2 with higher content and an increase in antioxidant GPX activity. Although a batch equilibrium technique showed that use of SiO2 resulted in the efficient removal of fenamiphos when compared with other treatments for removing adsorbed fenamiphos from soil, a fewer amount of fenamiphos was removed by G. max L. with SiO2. H2O2 content and GPX activity increased in G. max under fenamiphos treatment and its degradation products, while amended G. max with SiO2 or Argal led to a decrease in GPX activity and H2O2 content.
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Affiliation(s)
- Ahmed Ali Romeh
- Plant Production Department, Faculty of Technology and Development, Zagazig University, Zagazig, Egypt
| | - Mohamed Yousef Hendawi
- Plant Protection Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt.
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Płociniczak T, Fic E, Pacwa-Płociniczak M, Pawlik M, Piotrowska-Seget Z. Improvement of phytoremediation of an aged petroleum hydrocarbon-contaminated soil by Rhodococcus erythropolis CD 106 strain. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2017; 19:614-620. [PMID: 28103078 DOI: 10.1080/15226514.2016.1278420] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The aim of this study was to assess the impact of soil inoculation with the Rhodococcus erythropolis CD 106 strain on the effectiveness of the phytoremediation of an aged hydrocarbon-contaminated [approx. 1% total petroleum hydrocarbon (TPH)] soil using ryegrass (Lolium perenne). The introduction of CD 106 into the soil significantly increased the biomass of ryegrass and the removal of hydrocarbons in planted soil. The fresh weight of the shoots and roots of plants inoculated with CD 106 increased by 49% and 30%, respectively. After 210 days of the experiment, the concentration of TPH was reduced by 31.2%, whereas in the planted, non-inoculated soil, it was reduced by 16.8%. By contrast, the concentration of petroleum hydrocarbon decreased by 18.7% in non-planted soil bioaugmented with the CD 106 strain. The rifampicin-resistant CD 106 strain survived after inoculation into soil and was detected in the soil during the entire experimental period, but the number of CD 106 cells decreased constantly during the enhanced phytoremediation and bioaugmentation experiments. The plant growth-promoting and hydrocarbon-degrading properties of CD 106, which are connected with its long-term survival and limited impact on autochthonous microflora, make this strain a good candidate for improving the phytoremediation efficiency of soil contaminated with hydrocarbons.
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Affiliation(s)
- Tomasz Płociniczak
- a Department of Microbiology , University of Silesia , Katowice , Poland
| | - Ewa Fic
- a Department of Microbiology , University of Silesia , Katowice , Poland
| | | | - Małgorzata Pawlik
- a Department of Microbiology , University of Silesia , Katowice , Poland
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Proença DN, Grass G, Morais PV. Understanding pine wilt disease: roles of the pine endophytic bacteria and of the bacteria carried by the disease-causing pinewood nematode. Microbiologyopen 2017; 6:e00415. [PMID: 27785885 PMCID: PMC5387314 DOI: 10.1002/mbo3.415] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 09/16/2016] [Accepted: 09/21/2016] [Indexed: 12/03/2022] Open
Abstract
Pine wilt disease (PWD) is one of the most destructive diseases in trees of the genus Pinus and is responsible for environmental and economic losses around the world. The only known causal agent of the disease is the pinewood nematode (PWN) Bursaphelenchus xylophilus. Despite that, bacteria belonging to several different genera have been found associated with PWN and their roles in the development of PWD have been suggested. Molecular methodologies and the new era of genomics have revealed different perspectives to the problem, recognizing the manifold interactions between different organisms involved in the disease. Here, we reviewed the possible roles of nematode-carried bacteria in PWD, what could be the definition of this group of microorganisms and questioned their origin as possible endophytes, discussing their relation within the endophytic community of pine trees. The diversity of the nematode-carried bacteria and the diversity of pine tree endophytes, reported until now, is revised in detail in this review. What could signify a synergetic effect with PWN harming the plant, or what could equip bacteria with functions to control the presence of nematodes inside the tree, is outlined as two possible roles of the microbial community in the etiology of this disease. An emphasis is put on the potential revealed by the genomic data of isolated organisms in their potential activities as effective tools in PWD management.
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Affiliation(s)
- Diogo N. Proença
- CEMUCUniversity of CoimbraCoimbraPortugal
- Department of Biology and CESAMUniversity of AveiroAveiroPortugal
| | - Gregor Grass
- Bundeswehr Institute of MicrobiologyMunichGermany
| | - Paula V. Morais
- CEMUCUniversity of CoimbraCoimbraPortugal
- Department of Life SciencesUniversity of CoimbraCoimbraPortugal
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Cheng L, Wang Y, Cai Z, Liu J, Yu B, Zhou Q. Phytoremediation of petroleum hydrocarbon-contaminated saline-alkali soil by wild ornamental Iridaceae species. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2017; 19:300-308. [PMID: 27592632 DOI: 10.1080/15226514.2016.1225282] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
As a green remediation technology, phytoremediation is becoming one of the most promising methods for treating petroleum hydrocarbons (PHCs)-contaminated soil. Pot culture experiments were conducted in this study to investigate phytoremediation potential of two representative Iridaceae species (Iris dichotoma Pall. and Iris lactea Pall.) in remediation of petroleum hydrocarbon-contaminated saline-alkali soil from the Dagang Oilfield in Tianjin, China. The results showed that I. lactea was more endurable to extremely high concentration of PHCs (about 40,000 mg/kg), with a relatively high degradation rate of 20.68%.The degradation rate of total petroleum hydrocarbons (TPHs) in soils contaminated with 10,000 and 20,000 mg/kg of PHCs was 30.79% and 19.36% by I. dichotoma, and 25.02% and 19.35% by I. lactea, respectively, which improved by 10-60% than the unplanted controls. The presence of I. dichotoma and I. lactea promoted degradation of PHCs fractions, among which saturates were more biodegradable than aromatics. Adaptive specialization was observed within the bacterial community. In conclusion, phytoremediation by I. dichotoma should be limited to soils contaminated with ≤20,000 mg/kg of PHCs, while I. lactea could be effectively applied to phytoremediation of contaminated soils by PHCs with at least 40,000 mg/kg.
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Affiliation(s)
- Lijuan Cheng
- a Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education/Tianjin Key Laboratory of Environmental Remediation and Pollution Control , College of Environmental Science and Engineering, Nankai University , Tianjin , China
| | - Yanan Wang
- a Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education/Tianjin Key Laboratory of Environmental Remediation and Pollution Control , College of Environmental Science and Engineering, Nankai University , Tianjin , China
| | - Zhang Cai
- a Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education/Tianjin Key Laboratory of Environmental Remediation and Pollution Control , College of Environmental Science and Engineering, Nankai University , Tianjin , China
| | - Jie Liu
- a Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education/Tianjin Key Laboratory of Environmental Remediation and Pollution Control , College of Environmental Science and Engineering, Nankai University , Tianjin , China
| | - Binbin Yu
- a Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education/Tianjin Key Laboratory of Environmental Remediation and Pollution Control , College of Environmental Science and Engineering, Nankai University , Tianjin , China
| | - Qixing Zhou
- a Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education/Tianjin Key Laboratory of Environmental Remediation and Pollution Control , College of Environmental Science and Engineering, Nankai University , Tianjin , China
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Iffis B, St-Arnaud M, Hijri M. Petroleum hydrocarbon contamination, plant identity and arbuscular mycorrhizal fungal (AMF) community determine assemblages of the AMF spore-associated microbes. Environ Microbiol 2016; 18:2689-704. [DOI: 10.1111/1462-2920.13438] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bachir Iffis
- Institut de Recherche en Biologie Végétale, Université de Montréal and Jardin botanique de Montréal; 4101 Rue Sherbrooke Est Montréal QC H1X 2B2 Canada
| | - Marc St-Arnaud
- Institut de Recherche en Biologie Végétale, Université de Montréal and Jardin botanique de Montréal; 4101 Rue Sherbrooke Est Montréal QC H1X 2B2 Canada
| | - Mohamed Hijri
- Institut de Recherche en Biologie Végétale, Université de Montréal and Jardin botanique de Montréal; 4101 Rue Sherbrooke Est Montréal QC H1X 2B2 Canada
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Jiang QY, Zhuo F, Long SH, Zhao HD, Yang DJ, Ye ZH, Li SS, Jing YX. Can arbuscular mycorrhizal fungi reduce Cd uptake and alleviate Cd toxicity of Lonicera japonica grown in Cd-added soils? Sci Rep 2016; 6:21805. [PMID: 26892768 PMCID: PMC4759589 DOI: 10.1038/srep21805] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 02/01/2016] [Indexed: 01/24/2023] Open
Abstract
A greenhouse pot experiment was conducted to study the impact of arbuscular mycorrhizal fungi--Glomus versiforme (Gv) and Rhizophagus intraradices (Ri) on the growth, Cd uptake, antioxidant indices [glutathione reductase (GR), ascorbate peroxidase (APX), superoxide dismutase (SOD), catalase (CAT), ascorbate (ASA), glutathione (GSH) and malonaldehyde (MDA)] and phytochelatins (PCs) production of Lonicera japonica in Cd-amended soils. Gv and Ri significantly increased P acquisition, biomass of shoots and roots at all Cd treatments. Gv significantly decreased Cd concentrations in shoots and roots, and Ri also obviously reduced Cd concentrations in shoots but increased Cd concentrations in roots. Meanwhile, activities of CAT, APX and GR, and contents of ASA and PCs were remarkably higher in Gv/Ri-inoculated plants than those of uninoculated plants, but lower MDA and GSH contents in Gv/Ri-inoculated plants were found. In conclusion, Gv and Ri symbiosis alleviated Cd toxicity of L. japonica through the decline of shoot Cd concentrations and the improvement of P nutrition, PCs content and activities of GR, CAT, APX in inoculated plants, and then improved plant growth. The decrease of shoot Cd concentrations in L. japonica inoculated with Gv/Ri would provide a clue for safe production of this plant from Cd-contaminated soils.
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Affiliation(s)
- Qiu-Yun Jiang
- Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, College of Life Sciences, South China Normal University, Guangzhou 510631, P. R. China
| | - Feng Zhuo
- Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, College of Life Sciences, South China Normal University, Guangzhou 510631, P. R. China
| | - Shi-Hui Long
- Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, College of Life Sciences, South China Normal University, Guangzhou 510631, P. R. China
| | - Hai-Di Zhao
- Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, College of Life Sciences, South China Normal University, Guangzhou 510631, P. R. China
| | - Dan-Jing Yang
- Guangzhou Research Academy of Environmental Protection, Guangzhou 510620, P. R. China
| | - Zhi-Hong Ye
- State Key Laboratory for Bio-control, and School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, P. R. China
| | - Shao-Shan Li
- Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, College of Life Sciences, South China Normal University, Guangzhou 510631, P. R. China
| | - Yuan-Xiao Jing
- Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, College of Life Sciences, South China Normal University, Guangzhou 510631, P. R. China
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Plouznikoff K, Declerck S, Calonne-Salmon M. Mitigating Abiotic Stresses in Crop Plants by Arbuscular Mycorrhizal Fungi. BELOWGROUND DEFENCE STRATEGIES IN PLANTS 2016. [DOI: 10.1007/978-3-319-42319-7_15] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Ali N, Masood S, Mukhtar T, Kamran MA, Rafique M, Munis MFH, Chaudhary HJ. Differential effects of cadmium and chromium on growth, photosynthetic activity, and metal uptake of Linum usitatissimum in association with Glomus intraradices. ENVIRONMENTAL MONITORING AND ASSESSMENT 2015; 187:311. [PMID: 25934052 DOI: 10.1007/s10661-015-4557-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Accepted: 04/21/2015] [Indexed: 05/08/2023]
Abstract
The current study was aimed at analyzing the differential effects of heavy metals (cadmium and chromium) and mycorrhizal fungus; Glomus intraradices on growth, chlorophyll content, proline production, and metal accumulation in flax plant (Linum usitatissimum L.). Heavy metal accumulation rate in flax varied from 90 to 95 % for Cd and 61-84 % for Cr at a concentration range of 250 to 500 ppm for both metals in 24 days of experiment. Growth and photosynthetic activity of flax reduced to an average of 21 and 45 %, respectively. However, inoculation of G. intraradices significantly increased the plant biomass even under metal stressed conditions. Additionally, mycorrhizal association also assists the Cd and Cr increased uptake by 23 and 33 %, respectively. Due to metal stress, chlorophyll contents were decreased by 27 and 45 %, while 84 and 71 % increased proline content was observed under Cd and Cr stress, respectively. The present results clearly signify the differential response and potential of flax plant towards heavy metal tolerance and accumulation that can further increase with mycorrhizal fungus.
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Xun F, Xie B, Liu S, Guo C. Effect of plant growth-promoting bacteria (PGPR) and arbuscular mycorrhizal fungi (AMF) inoculation on oats in saline-alkali soil contaminated by petroleum to enhance phytoremediation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:598-608. [PMID: 25091168 DOI: 10.1007/s11356-014-3396-4] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Accepted: 07/28/2014] [Indexed: 05/13/2023]
Abstract
To investigate the effect of plant growth-promoting bacteria (PGPR) and arbuscular mycorrhizal fungi (AMF) on phytoremediation in saline-alkali soil contaminated by petroleum, saline-alkali soil samples were artificially mixed with different amount of oil, 5 and 10 g/kg, respectively. Pot experiments with oat plants (Avena sativa) were conducted under greenhouse condition for 60 days. Plant biomass, physiological parameters in leaves, soil enzymes, and degradation rate of total petroleum hydrocarbon were measured. The result demonstrated that petroleum inhibited the growth of the plant; however, inoculation with PGPR in combination with AMF resulted in an increase in dry weight and stem height compared with noninoculated controls. Petroleum stress increased the accumulation of malondialdehyde (MDA) and free proline and the activities of the antioxidant enzyme such as superoxide dismutase, catalase, and peroxidase. Application of PGPR and AMF augmented the activities of three enzymes compared to their respective uninoculated controls, but decreased the MDA and free proline contents, indicating that PGPR and AMF could make the plants more tolerant to harmful hydrocarbon contaminants. It also improved the soil quality by increasing the activities of soil enzyme such as urease, sucrase, and dehydrogenase. In addition, the degradation rate of total petroleum hydrocarbon during treatment with PGPR and AMF in moderately contaminated soil reached a maximum of 49.73%. Therefore, we concluded the plants treated with a combination of PGPR and AMF had a high potential to contribute to remediation of saline-alkali soil contaminated with petroleum.
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Affiliation(s)
- Feifei Xun
- Key Laboratory of Molecular and Cytogenetics, Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, 150025, China
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