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Mihoub A, Ahmad I, Radicetti E. Editorial: Alternative fertilizer harnessing plant-microbe interactions (AFPMI) for improved soil and plantnutrient management. FRONTIERS IN PLANT SCIENCE 2023; 14:1333927. [PMID: 38126018 PMCID: PMC10731673 DOI: 10.3389/fpls.2023.1333927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 11/29/2023] [Indexed: 12/23/2023]
Affiliation(s)
- Adil Mihoub
- Center for Scientific and Technical Research on Arid Regions (CRSTRA), Biophysical Environment Station, Touggourt, Algeria
| | - Iftikhar Ahmad
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari, Pakistan
| | - Emanuele Radicetti
- Department of Chemical, Pharmaceutical and Agricultural Sciences (DOCPAS), University of Ferrara, Ferrara, Italy
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2
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Maqsood Q, Sumrin A, Waseem R, Hussain M, Imtiaz M, Hussain N. Bioengineered microbial strains for detoxification of toxic environmental pollutants. ENVIRONMENTAL RESEARCH 2023; 227:115665. [PMID: 36907340 DOI: 10.1016/j.envres.2023.115665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 03/05/2023] [Accepted: 03/08/2023] [Indexed: 05/08/2023]
Abstract
Industrialization and other anthropogenic human activities pose significant environmental risks. As a result of the hazardous pollution, numerous living organisms may suffer from undesirable diseases in their separate habitats. Bioremediation, which removes hazardous compounds from the environment using microbes or their biologically active metabolites, is one of the most successful remediation approaches. According to the United Nations Environment Program (UNEP), deteriorating soil health negatively impacts food security and human health over time. Soil health restoration is critical right now. Microbes are widely known for their importance in cleaning up toxins present in the soil, such as heavy metals, pesticides, and hydrocarbons. However, the capacity of local bacteria to digest these pollutants is limited, and the process takes an extended time. Genetically modified organisms (GMOs), whose altered metabolic pathways promote the over-secretion of a variety of proteins favorable to the bioremediation process, can speed up the breakdown process. The need for remediation procedures, degrees of soil contamination, site circumstances, broad adoptions, and numerous possibilities occurring at various cleaning stages are all studied in detail. Massive efforts to restore contaminated soils have also resulted in severe issues. This review focuses on the enzymatic removal of hazardous pollutants from the environment, such as pesticides, heavy metals, dyes, and plastics. There are also in-depth assessments of present discoveries and future plans for efficient enzymatic degradation of hazardous pollutants.
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Affiliation(s)
- Quratulain Maqsood
- Center for Applied Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Aleena Sumrin
- Center for Applied Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Rafia Waseem
- Center for Applied Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Maria Hussain
- Center for Applied Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Mehwish Imtiaz
- Center for Applied Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Nazim Hussain
- Center for Applied Molecular Biology, University of the Punjab, Lahore, Pakistan.
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3
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Prokaryotic communities adapted to microhabitats on the Indian lotus (Nelumbo nucifera) growing in the high-altitude urban Dal Lake. Int Microbiol 2022; 26:257-267. [PMID: 36378397 DOI: 10.1007/s10123-022-00297-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 08/18/2022] [Accepted: 10/28/2022] [Indexed: 11/16/2022]
Abstract
Indian lotus (Nelumbo nucifera) is one of the dominant aquatic plants cultivated in Dal Lake, situated at 1586 m above mean sea level (MSL) in the northeast of Srinagar, Kashmir. Despite their economic and ecological role, the microbial communities associated with the lotus plant are still unexplored. In this study, we investigated the prokaryotic communities on surfaces of different lotus microhabitats (roots, rhizome, leaves, flowers, and fruits), lake water, and sediments using 16S rRNA gene amplicon sequencing. Overall, prokaryotic diversity decreased significantly on the surface of lotus microhabitats in comparison to the lake water and sediments. Among the microhabitats of lotus, roots and leaves harbored more diverse communities in comparison to rhizomes, fruits, and flowers. A total of 98 genera were shared by lotus and the Dal Lake sediments and water. However, significant differences were found in their relative abundance; for example, Pseudomonas was the most dominant genus on the majority of lotus microhabitats. On the other hand, Flavobacterium was highly abundant in the lake water, while a higher abundance of Acinetobacter was recorded in sediments. Additionally, we also noted the presence of potential human pathogenic genera including Escherichia-Shigella, Enterobacter, Pantoea, Raoultella, Serratia, and Sphingomonas on the lotus microhabitats. Predicted functions of prokaryotic communities revealed a higher abundance of genes associated with nutrient uptake in the microhabitats of the lotus. This study offered first-hand information on the prokaryotic communities harbored by lotus plants and water and sediments of the Dal Lake and demonstrated the adaptation of diverse communities to microhabitats of lotus.
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Uqab B, Nazir R, Ganai BA, Rahi P. In vitro Sequestration of Molecular and Mass Spectra Characterized Metallophilic Cadmium Tolerant Bacteria for Sustainable Agriculture. Front Microbiol 2022; 13:845853. [PMID: 35479643 PMCID: PMC9038000 DOI: 10.3389/fmicb.2022.845853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 03/02/2022] [Indexed: 11/21/2022] Open
Abstract
Due to industrialization, the contamination of toxic metals in soils is currently one of the major concerns to scientists worldwide. The presence of high concentrations of heavy metals including cadmium in the environment is mainly attributed to human activities. Being a highly toxic metal, cadmium can enter plant cell transporters usually used for the uptake of essential cations, such as iron, calcium, and zinc. This study deals with the appraisement of response and tolerance shown by various bacteria in varied cadmium concentrations (100-1,000 ppm). The optical density (OD) of the isolates was measured to determine the minimum inhibitory concentration (MIC) of cadmium. Isolated bacteria have been identified using 16S rRNA gene sequence and Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS). Among the 72 isolates, 07 (Bacillus pumilus, Enterobacter kobei, Klebsiella pneumonia, Pseudomonas mandelii, Pseudomonas putida, Pseudomonas avellanae, and Staphylococcus equorum), isolates had efficacy for cadmium tolerance and showed sequestration potential at varying MIC. Furthermore, K. pneumonia was observed to have the highest (900 ppm) tolerance for cadmium and the lowest (600 ppm) was shown by E. kobei. Besides, K. pneumonia showed the highest (75.2%) sequestration potential while the least (52.4%) potential was observed for P. putida. These cadmium tolerant species can be implemented in contaminated environments for detoxification and elimination of cadmium from these agricultural fields. Graphical Abstract.
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Affiliation(s)
- Baba Uqab
- Department of Environmental Science, University of Kashmir, Srinagar, India
| | - Ruqeya Nazir
- Center of Research for Development, University of Kashmir, Srinagar, India,*Correspondence: Ruqeya Nazir,
| | - Bashir Ahmad Ganai
- Center of Research for Development, University of Kashmir, Srinagar, India
| | - Praveen Rahi
- National Center for Microbial Resource, National Center for Cell Science, Pune, India
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5
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Rebello S, Nathan VK, Sindhu R, Binod P, Awasthi MK, Pandey A. Bioengineered Microbes for Soil Health Restoration - Present Status and Future. Bioengineered 2021; 12:12839-12853. [PMID: 34775906 PMCID: PMC8810056 DOI: 10.1080/21655979.2021.2004645] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
According to the United Nations Environment Programme (UNEP), soil health is declining over the decades and it has an adverse impact on human health and food security. Hence, soil health restoration is a need of the hour. It is known that microorganisms play a vital role in remediation of soil pollutants like heavy metals, pesticides, hydrocarbons, etc. However, the indigenous microbes have a limited capacity to degrade these pollutants and it will be a slow process. Genetically modified organisms (GMOs) can catalyze the degradation process as their altered metabolic pathways lead to hypersecretions of various biomolecules that favor the bioremediation process. This review provides an overview on the application of bioengineered microorganisms for the restoration of soil health by degradation of various pollutants. It also sheds light on the challenges of using GMOs in environmental application as their introduction may affect the normal microbial community in soil. Since soil health also refers to the potential of native organisms to survive, the possible changes in the native microbial community with the introduction of GMOs are also discussed. Finally, the future prospects of using bioengineered microorganisms in environmental engineering applications to make the soil fertile and healthy have been deciphered. With the alarming rates of soil health loss, the treatment of soil and soil health restoration need to be fastened to a greater pace and the combinatorial efforts unifying GMOs, plant growth-promoting rhizobacteria, and other soil amendments will provide an effective solution to soil heath restoration ten years ahead.
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Affiliation(s)
| | - Vinod Kumar Nathan
- School of Chemical and Biotechnology, Sastra University, Thanjavur, India
| | - Raveendran Sindhu
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum - 695 019, India
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum - 695 019, India
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, North West A & F University, Yangling, Shaanxi - 712 100, China
| | - Ashok Pandey
- Centre for Innovation and Translational Research, CSIR- Indian Institute for Toxicology Research, Lucknow - 226 001, India.,Centre for Energy and Environmental Sustainability, Lucknow-226 029, Uttar Pradesh, India
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Wang J, Wu H, Wu L, Liu Y, Letuma P, Qin X, Chen T, Rensing C, Lin S, Lin W. Revealing Microbiome Structure and Assembly Process in Three Rhizocompartments of Achyranthes bidentata Under Continuous Monoculture Regimes. Front Microbiol 2021; 12:677654. [PMID: 34194412 PMCID: PMC8236951 DOI: 10.3389/fmicb.2021.677654] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 05/10/2021] [Indexed: 11/13/2022] Open
Abstract
The complex composition and interaction of root-associated microbes are critical to plant health and performance. In this study, we presented a detailed characterization of three rhizocompartment (rhizosphere, rhizoplane, and root) microbiomes of Achyranthes bidentata under different years of consecutive monoculture by deep sequencing in order to determine keystone microorganisms via co-occurrence network analysis. The network analysis showed that multiple consecutive monoculture (MCM, represented 5Y and 10Y) soils generated some distinct beneficial bacterial taxa such as Bacillus, Fictibacillus, Bradyrhizobium, Shinella, and Herbaspirillum. For fungi, Mortierella substituted for Fusarium in occupying an important position in different rhizocompartments under A. bidentate monoculture. Quantitative PCR analysis confirmed a significant increase in Bacillus, Pseudomonas, and Burkholderia spp. The results of the inoculation assay showed that addition of beneficial bacteria Bacillus subtilis 74 and Bacillus halodurans 75 significantly increased the root length and fresh weight of A. bidentata. Furthermore, three types of phytosterones, as the main allochemicals, were identified both in the rhizosphere soil and in culture medium under sterile conditions by LC-MS/MS. When looking at in vitro interactions, it was found that phytosterones displayed a positive interaction with dominant beneficial species (Bacillus amyloliquefaciens 4 and B. halodurans 75) and had a negative effect on the presence of the pathogenic fungi Fusarium solani and Fusarium oxysporum. Overall, this study demonstrated that consecutive monoculture of A. bidentata can alter the bacterial and fungal community by secreting root exudates, leading to recruitment of beneficial microbes and replacement of plant-specific pathogenic fungi with plant beneficial fungi.
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Affiliation(s)
- Juanying Wang
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Hongmiao Wu
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Linkun Wu
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Ye Liu
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Puleng Letuma
- Department of Crop Science, National University of Lesotho, Maseru, Lesotho
| | - Xianjin Qin
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Ting Chen
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Christopher Rensing
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Sheng Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Wenxiong Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
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7
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Duan Y, Mehariya S, Kumar A, Singh E, Yang J, Kumar S, Li H, Kumar Awasthi M. Apple orchard waste recycling and valorization of valuable product-A review. Bioengineered 2021; 12:476-495. [PMID: 33472503 PMCID: PMC8291833 DOI: 10.1080/21655979.2021.1872905] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Huge quantities of apple orchard waste (AOW) generated could be regarded as a promising alternative energy source for fuel and material production. Conventional and traditional processes for disposal of these wastes are neither economical nor environment friendly. Hence, sustainable technologies are required to be developed to solve this long-term existence and continuous growing problem. In light of these issues, this review pays attention towards sustainable and renewable systems, various value-added products from an economic and environmental perspective. Refined bio-product derived from AOW contributes to resource and energy demand comprising of biomethane, bioethanol, biofuels, bio-fertilizers, biochar, and biochemicals, such as organic acid, and enzymes. However, the market implementation of biological recovery requires reliable process technology integrated with an eco-friendly and economic production chain, classified management.
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Affiliation(s)
- Yumin Duan
- College of Natural Resources and Environment, Northwest A&F University , Yangling, Shaanxi Province China
| | - Sanjeet Mehariya
- Department of Engineering, University of Campania "Luigi Vanvitelli" , Aversa (CE), Italy
| | - Aman Kumar
- CSIR-National Environmental Engineering Research Institute , Nagpur Maharashtra, India
| | - Ekta Singh
- CSIR-National Environmental Engineering Research Institute , Nagpur Maharashtra, India
| | - Jianfeng Yang
- College of Natural Resources and Environment, Northwest A&F University , Yangling, Shaanxi Province China
| | - Sunil Kumar
- CSIR-National Environmental Engineering Research Institute , Nagpur Maharashtra, India
| | - Huike Li
- College of Natural Resources and Environment, Northwest A&F University , Yangling, Shaanxi Province China
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University , Yangling, Shaanxi Province China.,Swedish Centre for Resource Recovery, University of Borås , Borås, Sweden
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8
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Sunita K, Mishra I, Mishra J, Prakash J, Arora NK. Secondary Metabolites From Halotolerant Plant Growth Promoting Rhizobacteria for Ameliorating Salinity Stress in Plants. Front Microbiol 2020; 11:567768. [PMID: 33193157 PMCID: PMC7641974 DOI: 10.3389/fmicb.2020.567768] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 09/29/2020] [Indexed: 12/23/2022] Open
Abstract
Soil salinization has emerged as one of the prime environmental constraints endangering soil quality and agricultural productivity. Anthropogenic activities coupled with rapid pace of climate change are the key drivers of soil salinity resulting in degradation of agricultural lands. Increasing levels of salt not only impair structure of soil and its microbial activity but also restrict plant growth by causing harmful imbalance and metabolic disorders. Potential of secondary metabolites synthesized by halotolerant plant growth promoting rhizobacteria (HT-PGPR) in the management of salinity stress in crops is gaining importance. A wide array of secondary metabolites such as osmoprotectants/compatible solutes, exopolysaccharides (EPS) and volatile organic compounds (VOCs) from HT-PGPR have been reported to play crucial roles in ameliorating salinity stress in plants and their symbiotic partners. In addition, HT-PGPR and their metabolites also help in prompt buffering of the salt stress and act as biological engineers enhancing the quality and productivity of saline soils. The review documents prominent secondary metabolites from HT-PGPR and their role in modulating responses of plants to salinity stress. The review also highlights the mechanisms involved in the production of secondary metabolites by HT-PGPR in saline conditions. Utilizing the HT-PGPR and their secondary metabolites for the development of novel bioinoculants for the management of saline agro-ecosystems can be an important strategy in the future.
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Affiliation(s)
- Kumari Sunita
- Department of Botany, Deen Dayal Upadhyay Gorakhpur University, Gorakhpur, India
| | - Isha Mishra
- Department of Microbiology, School for Environmental Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, India
| | - Jitendra Mishra
- DST-Center for Policy Research, Babasaheb Bhimrao Ambedkar University, Lucknow, India
| | - Jai Prakash
- Department of Microbiology, School for Environmental Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, India
| | - Naveen Kumar Arora
- Department of Environmental Science, School for Environmental Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, India
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9
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Xie H, Feng X, Wang M, Wang Y, Kumar Awasthi M, Xu P. Implications of endophytic microbiota in Camellia sinensis: a review on current understanding and future insights. Bioengineered 2020; 11:1001-1015. [PMID: 32881650 PMCID: PMC8291792 DOI: 10.1080/21655979.2020.1816788] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Endophytic fungi and bacteria are the most ubiquitous and representative commensal members that have been studied so far in various higher plants. Within colonization and interaction with their host plants, endophytic microbiota are reportedly to modulate not only the host's growth but also holobiont resilience to abiotic and biotic stresses, providing a natural reservoir and a promising solution for sustainable agricultural development challenged by global climate change. Moreover, possessing the talent to produce a wide array of high-value natural products, plant endophytic microbiota also serve as an alternative way for novel drug discovery. In this review, tea, one of the world's three largest nonalcoholic beverages and a worldwide economic woody crop, was highlighted in the context of endophytic microbiota. We explore the recent studies regarding isolation approaches, distribution characteristics and diversity, and also biological functions of endophytic microbiota in Camellia sinensis (L.) O. Kuntze. Profoundly, the future insight into interaction mechanism between endophytic microbiota and tea plants will shed light on in-depth exploration of tea microbial resources.
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Affiliation(s)
- Hengtong Xie
- College of Agriculture and Biotechnology, Zhejiang University , Hangzhou, China
| | - Xiaoxiao Feng
- Agricultural Experiment Station of Zhejiang University , Hangzhou, China
| | - Mengcen Wang
- College of Agriculture and Biotechnology, Zhejiang University , Hangzhou, China.,Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture , Hangzhou, China
| | - Yuefei Wang
- College of Agriculture and Biotechnology, Zhejiang University , Hangzhou, China.,Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture , Hangzhou, China
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University , Yangling, China
| | - Ping Xu
- College of Agriculture and Biotechnology, Zhejiang University , Hangzhou, China.,Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture , Hangzhou, China
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Uqab B, Nazir R, Ahmad Ganai B, Rahi P, Rehman S, Farooq S, Dar R, Parray JA, Fahad Al-Arjani Al-Arjani AB, Tabassum B, Fathi Abd Allah E. MALDI-TOF-MS and 16S rRNA characterization of lead tolerant metallophile bacteria isolated from saffron soils of Kashmir for their sequestration potential. Saudi J Biol Sci 2020; 27:2047-2053. [PMID: 32714029 PMCID: PMC7376117 DOI: 10.1016/j.sjbs.2020.04.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 04/11/2020] [Accepted: 04/12/2020] [Indexed: 11/25/2022] Open
Abstract
Toxic metal contamination in soils due industrialization is nowadays a concern to the scientists worldwide. The current study deals with the evaluation of response and tolerance by isolated metallophilic bacteria in different lead concentrations (100 ppm to 1000 ppm). By taking optical densities of the isolates, the minimum inhibitory concentration (MIC) of Pb2+ were determined.16S rRNA and MALDI-TOF MS were used for the identification of the bacteria. Total of 37 isolates were observed, among them 04 (Staphylococcus equorum, Staphylococcus warneri, Bacillus safensis and Bacillus thuringiensis), isolated were detected having efficacy of Pb2+tolerance and sequestration at varying MIC. Furthermore, B. thuringiensis was observed to have highest (900 ppm) tolerance for lead and lowest (500 ppm) for Staphylococcus warneri. Moreover, the highest (65.3%) sequestration potential has been observed for B. thuringiensis and least (52.8%) for S. warneri. The tolerance and sequestration potential properties of these isolated species can be utilised to exterminate heavy metals and reduce their toxicity from the contaminated environment.
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Affiliation(s)
- Baba Uqab
- Department of Environmental Science, University of Kashmir, 190006 Jammu & Kashmir, India
| | - Ruqeya Nazir
- Centre of Research for Development (CORD), University of Kashmir, 190006 Jammu & Kashmir, India
| | - Bashir Ahmad Ganai
- Centre of Research for Development (CORD), University of Kashmir, 190006 Jammu & Kashmir, India
| | - Praveen Rahi
- National Centre For Microbial Research (NCMR), Pune, India
| | - Sabeehah Rehman
- Centre of Research for Development (CORD), University of Kashmir, 190006 Jammu & Kashmir, India
| | - Saleem Farooq
- Department of Environmental Science, University of Kashmir, 190006 Jammu & Kashmir, India
| | - Rubiya Dar
- Centre of Research for Development (CORD), University of Kashmir, 190006 Jammu & Kashmir, India
| | - Javid A Parray
- Centre of Research for Development (CORD), University of Kashmir, 190006 Jammu & Kashmir, India.,Govt SAM Degree College Budgam, JK 191111, India
| | | | - Baby Tabassum
- Toxicology Laboratory, Department of Zoology, Govt. Raza P.G. College Rampur, 244901 U.P., India
| | - Elsayed Fathi Abd Allah
- Plant Production Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box. 2460, Riyadh 11451, Saudi Arabia
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11
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Singh P, Singh J, Ray S, Rajput RS, Vaishnav A, Singh RK, Singh HB. Seed biopriming with antagonistic microbes and ascorbic acid induce resistance in tomato against Fusarium wilt. Microbiol Res 2020; 237:126482. [PMID: 32353683 DOI: 10.1016/j.micres.2020.126482] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/22/2020] [Accepted: 03/28/2020] [Indexed: 12/20/2022]
Abstract
Seed biopriming is an emerging technique to enhance seed germination under stress conditions. An integrated approach of tomato seed biopriming with ascorbic acid, Trichoderma asperellum BHU P-1 and Ochrobactrum sp. BHU PB-1 was applied to observe the response against wilt pathogen of tomato Fusarium oxysporum f. sp. lycopersici (FOL). Tomato seeds bioprimed with the aforementioned application expressed augmented seed germination and activated of defense response. Seed germination was recorded higher (80 %) at low concentration (1 pM) of ascorbic acid as compared to high concentration of 1 mM (41 %). Combination of both ascorbic acid and antagonistic microbe treatments (T5 & T6) significantly reduced disease incidence (up to 28 %) in tomato plants at 10 days. T5 and T6 treated plants exhibited higher accumulation of total phenol content and increased activity of Phenylammonia lyase (PAL), Peroxidase (PO), Chitinase (Chi) and Polyphenol oxidase (PPO) as compared to control (T1) plants. ROS formation in the form of H2O2 was also found to be reduced in combined treatment. Histochemical analysis revealed that phenylpropanoid pathway (lignin deposition) was more activated in combined priming treatment plants as compared to individual treatment upon challenge inoculation with FOL. Transcript expression analysis of defense genes confirmed the up-regulation of PAL (2.1 fold), Chi (0.92 fold), Pathogenesis related proteins (PR) (1.58 fold) and Lipoxygenase (Lox) (0.72 fold) in T6 treatment as compared to T1 treatment plants at 96 h. This study reveals that ascorbic acid treatment with antagonistic microbes through seed priming effectively induced seed germination and elicited defense mechanism to control wilt disease in tomato plants.
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Affiliation(s)
- Prachi Singh
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Jyoti Singh
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221005, India; Department of Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Shatrupa Ray
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Rahul Singh Rajput
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Anukool Vaishnav
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221005, India.
| | - Rakesh Kumar Singh
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Harikesh Bahadur Singh
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221005, India; Somvanshi Research Foundation13/21 Vikas Nagar, Lucknow-226022, India.
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12
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Castellano-Hinojosa A, Strauss SL. Impact of Cover Crops on the Soil Microbiome of Tree Crops. Microorganisms 2020; 8:E328. [PMID: 32110988 PMCID: PMC7143828 DOI: 10.3390/microorganisms8030328] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/19/2020] [Accepted: 02/22/2020] [Indexed: 12/21/2022] Open
Abstract
Increased concerns associated with interactions between herbicides, inorganic fertilizers, soil nutrient availability, and plant phytotoxicity in perennial tree crop production systems have renewed interest in the use of cover crops in the inter-row middles or between trees as an alternative sustainable management strategy for these systems. Although interactions between the soil microbiome and cover crops have been examined for annual cropping systems, there are critical differences in management and growth in perennial cropping systems that can influence the soil microbiome and, therefore, the response to cover crops. Here, we discuss the importance of cover crops in tree cropping systems using multispecies cover crop mixtures and minimum tillage and no-tillage to not only enhance the soil microbiome but also carbon, nitrogen, and phosphorus cycling compared to monocropping, conventional tillage, and inorganic fertilization. We also identify potentially important taxa and research gaps that need to be addressed to facilitate assessments of the relationships between cover crops, soil microbes, and the health of tree crops. Additional evaluations of the interactions between the soil microbiome, cover crops, nutrient cycling, and tree performance will allow for more effective and sustainable management of perennial cropping systems.
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Affiliation(s)
| | - Sarah L. Strauss
- Department of Soil and Water Sciences, Southwest Florida Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Immokalee, FL 34142, USA;
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13
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Sarsaiya S, Shi J, Chen J. A comprehensive review on fungal endophytes and its dynamics on Orchidaceae plants: current research, challenges, and future possibilities. Bioengineered 2019; 10:316-334. [PMID: 31347943 PMCID: PMC6682353 DOI: 10.1080/21655979.2019.1644854] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
In the development of medicinally important Orchidaceae, the extent of fungal endophytes specificity is not presently very clear. Limited study has been available on natural products formed and its role on plant growth, defence mechanism by endophytes, and to characterize the chief treasure of bioactive molecules. Therefore, this review article presents an evaluation of the endophytes associated with Orchidaceae for physiology, metabolism, and genomics which have prominently contributed to the resurgence of novel metabolite research increasing our considerate of multifaceted mechanisms regulatory appearance of biosynthetic gene groups encoding diverse metabolites. Additionally, we presented the comprehensive recent development of bio-strategies for the cultivation of endophytes from Orchidaceae and integration of bioengineered ‘Genomics with metabolism’ approaches with emphases collective omics as powerful approach to discover novel metabolite compounds. The Orchidaceae-fungal endophytes' biodynamics for sustainable development of bioproducts and its applications are supported in large-scale biosynthesis of industrially and pharmaceutical important biomolecules.
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Affiliation(s)
- Surendra Sarsaiya
- a Key Laboratory of Basic Pharmacology and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University , Zunyi , China.,b Bioresource Institute for Healthy Utilization, Zunyi Medical University , Zunyi , China
| | - Jingshan Shi
- a Key Laboratory of Basic Pharmacology and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University , Zunyi , China
| | - Jishuang Chen
- b Bioresource Institute for Healthy Utilization, Zunyi Medical University , Zunyi , China.,c College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University , Nanjing , China
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14
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Ahmad F, Ashraf N, Da-Chuan Y, Jabeen H, Anwar S, Wahla AQ, Iqbal S. Application of a novel bacterial consortium BDAM for bioremediation of bispyribac sodium in wheat vegetated soil. JOURNAL OF HAZARDOUS MATERIALS 2019; 374:58-65. [PMID: 30978631 DOI: 10.1016/j.jhazmat.2019.03.130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 03/29/2019] [Accepted: 03/30/2019] [Indexed: 06/09/2023]
Abstract
Plant-bacterial mutualism has tremendous potential for remediation of herbicide contaminated soils. Generally, bacterial inoculation helps plants to grow well in the contaminated environment. Here, we investigated the impact of bispyribac sodium (BS) degrading bacterial consortium (BDAM) on BS remediation, plant growth promotion and BS accumulation in plant parts. Wheat (Triticum aestivum) was planted in BS spiked soil and inoculated with BDAM. Inoculation showed a beneficial effect on plant biomass production and degradation of BS in the rhizosphere and the rhizosheath. After 40 and 60 days of inoculation, the degradation of BS was more than 96% and approximately 100% respectively in the planted and inoculated soil spiked with 2 and 5 mg kg-1 BS. However, in planted and un-inoculated soil, the degradation of BS was 72% after 60 days of sowing. Furthermore, inoculated bacterial strains colonized both in rhizo- and endosphere of the inoculated plants. In comparison with the un-inoculated soil, significantly less accumulation of BS was found in the roots and shoots of the plants growing in inoculated soil. We report the efficiency of plant-bacterial partnership for enhanced biodegradation of BS and to eliminate the BS residual toxicity to non-target plants.
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Affiliation(s)
- Fiaz Ahmad
- Key Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Noreen Ashraf
- Key Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Yin Da-Chuan
- Key Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Hina Jabeen
- Assistant Prof. Head Department of Microbiology, Women University Mardan, Khyber Pakhtunkhwa, Pakistan
| | - Samina Anwar
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), P.O. Box 577, Jhang Road, Faisalabad, 38000, Pakistan
| | - Abdul Qadeer Wahla
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), P.O. Box 577, Jhang Road, Faisalabad, 38000, Pakistan
| | - Samina Iqbal
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), P.O. Box 577, Jhang Road, Faisalabad, 38000, Pakistan.
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15
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Singh D, Raina TK, Kumar A, Singh J, Prasad R. Plant microbiome: A reservoir of novel genes and metabolites. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.plgene.2019.100177] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Wang B, Adachi Y, Sugiyama S. Soil productivity and structure of bacterial and fungal communities in unfertilized arable soil. PLoS One 2018; 13:e0204085. [PMID: 30248134 PMCID: PMC6152964 DOI: 10.1371/journal.pone.0204085] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 09/04/2018] [Indexed: 01/22/2023] Open
Abstract
Soil productivity is strongly influenced by the activities of microbial communities. However, it is not well understood how community structure, including its richness, mass, and composition, influences soil functions. We investigated the relationships between soil productivity and microbial communities in unfertilized arable soils extending over 1000 km in eastern Japan. Soil properties, including C turnover rate, N mineralization rate, microbial C, and various soil chemical properties, were measured. Soil bacterial and fungal communities were analyzed by Illumina's MiSeq using 16S rRNA and ITS regions. In addition, root microbial communities from maize grown in each soil were also investigated. Soil bacterial communities shared many operational taxonomic units (OTUs) among farms. An ordination plot based on correspondence analysis revealed convergent distribution of soil bacterial communities across the farms, which seemed to be a result of similar agricultural management practices. Although fungal communities showed lower richness and a lower proportion of shared OTUs than bacterial communities, community structure between the farms tended to be convergent. On the other hand, root communities had lower richness and a higher abundance of specific taxa than the soil communities. Two soil functions, decomposition activity and soil productivity, were extracted by principal component analysis (PCA) based on eight soil properties. Soil productivity correlated with N mineralization rate, P2O5, and maize growth, but not with decomposition activity, which is characterized by C turnover rate, soil organic C, and microbial mass. Soil productivity showed a significant association with community composition, but not with richness and mass of soil microbial communities. Soil productivity also correlated with the abundance of several specific taxa, both in bacteria and fungi. Root communities did not show any clear correlations with soil productivity. These results demonstrate that community composition and abundance of soil microbial communities play important roles in determining soil productivity.
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Affiliation(s)
- Boxi Wang
- Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, Aomori, Japan
- The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate, Japan
| | - Yoichi Adachi
- Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, Aomori, Japan
| | - Shuichi Sugiyama
- Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, Aomori, Japan
- * E-mail:
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17
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Wu L, Wang J, Wu H, Chen J, Xiao Z, Qin X, Zhang Z, Lin W. Comparative Metagenomic Analysis of Rhizosphere Microbial Community Composition and Functional Potentials under Rehmannia glutinosa Consecutive Monoculture. Int J Mol Sci 2018; 19:ijms19082394. [PMID: 30110928 PMCID: PMC6121535 DOI: 10.3390/ijms19082394] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 08/08/2018] [Accepted: 08/08/2018] [Indexed: 11/16/2022] Open
Abstract
Consecutive monoculture of Rehmannia glutinosa, highly valued in traditional Chinese medicine, leads to a severe decline in both quality and yield. Rhizosphere microbiome was reported to be closely associated with the soil health and plant performance. In this study, comparative metagenomics was applied to investigate the shifts in rhizosphere microbial structures and functional potentials under consecutive monoculture. The results showed R. glutinosa monoculture significantly decreased the relative abundances of Pseudomonadaceae and Burkholderiaceae, but significantly increased the relative abundances of Sphingomonadaceae and Streptomycetaceae. Moreover, the abundances of genera Pseudomonas, Azotobacter, Burkholderia, and Lysobacter, among others, were significantly lower in two-year monocultured soil than in one-year cultured soil. For potentially harmful/indicator microorganisms, the percentages of reads categorized to defense mechanisms (i.e., ATP-binding cassette (ABC) transporters, efflux transporter, antibiotic resistance) and biological metabolism (i.e., lipid transport and metabolism, secondary metabolites biosynthesis, transport and catabolism, nucleotide transport and metabolism, transcription) were significantly higher in two-year monocultured soil than in one-year cultured soil, but the opposite was true for potentially beneficial microorganisms, which might disrupt the equilibrium between beneficial and harmful microbes. Collectively, our results provide important insights into the shifts in genomic diversity and functional potentials of rhizosphere microbiome in response to R. glutinosa consecutive monoculture.
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Affiliation(s)
- Linkun Wu
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Juanying Wang
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Hongmiao Wu
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Jun Chen
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Zhigang Xiao
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Xianjin Qin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou 350002, China.
| | - Zhongyi Zhang
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou 350002, China.
- College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Wenxiong Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou 350002, China.
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18
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Basu S, Rabara RC, Negi S, Shukla P. Engineering PGPMOs through Gene Editing and Systems Biology: A Solution for Phytoremediation? Trends Biotechnol 2018; 36:499-510. [DOI: 10.1016/j.tibtech.2018.01.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 01/22/2018] [Accepted: 01/23/2018] [Indexed: 01/17/2023]
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19
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Singh BK, Trivedi P, Singh S, Macdonald CA, Verma JP. Emerging microbiome technologies for sustainable increase in farm productivity and environmental security. MICROBIOLOGY AUSTRALIA 2018. [DOI: 10.1071/ma18006] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Farming systems are under pressure to sustainably increase productivity to meet demand for food and fibre for a growing global population under shrinking arable lands and changing climatic conditions. Furthermore, conventional farming has led to declines in soil fertility and, in some cases, inappropriate and excessive use of chemical fertilisers and pesticides has caused soil degradation, negatively impacting human and environmental health. The soil and plant microbiomes are significant determinants of plant fitness and productivity. Microbes are also the main drivers of global biogeochemical cycles and thus key to sustainable agriculture. There is increasing evidence that with development of appropriate technologies, the plant microbiome can be harnessed to potentially decrease the frequency of plant diseases, increase resource use efficiencies and ultimately enhance agricultural productivity, while simultaneously decreasing the input of chemical fertilisers and pesticides, resulting in reduced greenhouse gas emissions and promoting environmental sustainability. However, to successfully translate potential to practical outcomes, both fundamental and applied research are needed to overcome current constraints. Research efforts need to be embedded in industrial requirements and policy and social frameworks to expedite the process of innovation, commercialisation and adoption. We propose that learning from the advancement in the human microbiome can significantly expedite the discovery and innovation of effective microbial products for sustainable and productive farming. This article summarises the emergence of microbiome technologies for the agriculture industry and how to facilitate the development and adoption of environmentally friendly microbiome technologies for sustainable increase in farm productivity.
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20
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Chen J, Wu L, Xiao Z, Wu Y, Wu H, Qin X, Wang J, Wei X, Khan MU, Lin S, Lin W. Assessment of the Diversity of Pseudomonas spp. and Fusarium spp. in Radix pseudostellariae Rhizosphere under Monoculture by Combining DGGE and Quantitative PCR. Front Microbiol 2017; 8:1748. [PMID: 28966607 PMCID: PMC5605650 DOI: 10.3389/fmicb.2017.01748] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 08/28/2017] [Indexed: 11/13/2022] Open
Abstract
Radix pseudostellariae is a perennial tonic medicinal plant, with high medicinal value. However, consecutive monoculture of this plant in the same field results in serious decrease in both yield and quality. In this study, a 3-year field experiment was performed to identify the inhibitory effect of growth caused by prolonged monoculture of R. pseudostellariae. DGGE analysis was used to explore the shifts in the structure and diversity of soil Fusarium and Pseudomonas communities along a 3-year gradient of monoculture. The results demonstrated that extended monoculture significantly boosted the diversity of Fusarium spp., but declined Pseudomonas spp. diversity. Quantitative PCR analysis showed a significant increase in Fusarium oxysporum, but a decline in Pseudomonas spp. Furthermore, abundance of antagonistic Pseudomonas spp. possessing antagonistic ability toward F. oxysporum significantly decreased in consecutively monocultured soils. Phenolic acid mixture at the same ratio as detected in soil could boost mycelial and sporular growth of pathogenic F. oxysporum while inhibit the growth of antagonistic Pseudomonas sp. CJ313. Moreover, plant bioassays showed that Pseudomonas sp. CJ313 had a good performance that protected R. pseudostellariae from infection by F. oxysporum. In conclusion, this study demonstrated that extended monoculture of R. pseudostellariae could alter the Fusarium and Pseudomonas communities in the plant rhizosphere, leading to relatively low level of antagonistic microorganisms, but with relatively high level of pathogenic microorganisms.
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Affiliation(s)
- Jun Chen
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Linkun Wu
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Zhigang Xiao
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Yanhong Wu
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Hongmiao Wu
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Xianjin Qin
- Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China.,College of Crop Science, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Juanying Wang
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Xiaoya Wei
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Muhammad U Khan
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Sheng Lin
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Wenxiong Lin
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China.,Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Fujian Agriculture and Forestry UniversityFuzhou, China
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21
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Trivedi P, Schenk PM, Wallenstein MD, Singh BK. Tiny Microbes, Big Yields: enhancing food crop production with biological solutions. Microb Biotechnol 2017; 10:999-1003. [PMID: 28840959 PMCID: PMC5609239 DOI: 10.1111/1751-7915.12804] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 07/12/2017] [Indexed: 01/19/2023] Open
Abstract
Plant‐associated microbiomes have tremendous potential to improve plant resilience and yields in farming systems. There is increasing evidence that biological technologies that use microbes or their metabolites can enhance nutrient uptake and yield, control pests and mitigate plant stress responses. However, to fully realize the potential of microbial technology, their efficacy and consistency under the broad range of real‐world conditions need to be improved. While the optimization of microbial biofertilizers and biopesticides is advancing rapidly to enable use in various soils, crop varieties and environments, crop breeding programmes have yet to incorporate the selection of beneficial plant–microbe interactions to breed ‘microbe‐optimized plants’. Emerging efforts exploring microbiome engineering could lead to microbial consortia that are better suited to support plants. The combination of all three approaches could be integrated to achieve maximum benefits and significantly improved crop yields to address food security.
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Affiliation(s)
- Pankaj Trivedi
- Bioagricultural Science and Pest Management, Colorado State University, Fort Collins, CO, 80523, USA
| | - Peer M Schenk
- School of Agriculture and Food Sciences, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Matthew D Wallenstein
- Department of Ecosystem Science and Sustainability, Colorado State University, Fort Collins, CO, 80523, USA.,Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, CO, 80523, USA
| | - Brajesh K Singh
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, 2753, Australia.,Global Center for Land Based Innovation, Western Sydney University, Richmond, NSW, 2753, Australia
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22
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Trivedi P, Delgado‐Baquerizo M, Jeffries TC, Trivedi C, Anderson IC, Lai K, McNee M, Flower K, Pal Singh B, Minkey D, Singh BK. Soil aggregation and associated microbial communities modify the impact of agricultural management on carbon content. Environ Microbiol 2017; 19:3070-3086. [DOI: 10.1111/1462-2920.13779] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 04/20/2017] [Indexed: 12/23/2022]
Affiliation(s)
- Pankaj Trivedi
- Hawkesbury Institute for the EnvironmentWestern Sydney UniversityLocked Bag 1797Penrith South NSW2751, Australia
- Department of Bioagricultural Sciences and Pest ManagementColorado State UniversityFort Collins CO80523, USA
| | - Manuel Delgado‐Baquerizo
- Hawkesbury Institute for the EnvironmentWestern Sydney UniversityLocked Bag 1797Penrith South NSW2751, Australia
- Cooperative Institute for Research in Environmental SciencesUniversity of ColoradoBoulder CO80309, USA
| | - Thomas C. Jeffries
- Hawkesbury Institute for the EnvironmentWestern Sydney UniversityLocked Bag 1797Penrith South NSW2751, Australia
| | - Chanda Trivedi
- Hawkesbury Institute for the EnvironmentWestern Sydney UniversityLocked Bag 1797Penrith South NSW2751, Australia
| | - Ian C. Anderson
- Hawkesbury Institute for the EnvironmentWestern Sydney UniversityLocked Bag 1797Penrith South NSW2751, Australia
| | - Kaitao Lai
- Hawkesbury Institute for the EnvironmentWestern Sydney UniversityLocked Bag 1797Penrith South NSW2751, Australia
| | - Matthew McNee
- Western Australian No‐Tillage Farmers AssociationLeeuwin Centre, CSIRO65, Brockway RoadFloreat WA6014, Australia
| | - Kenneth Flower
- School of Plant Biology and Institute of AgricultureThe University of Western Australia35 Stirling HighwayCrawley WA6009, Australia
| | - Bhupinder Pal Singh
- NSW Department of Primary IndustriesElizabeth Macarthur Agricultural InstituteMenangle NSW2568, Australia
| | - David Minkey
- Western Australian No‐Tillage Farmers AssociationLeeuwin Centre, CSIRO65, Brockway RoadFloreat WA6014, Australia
| | - Brajesh K. Singh
- Hawkesbury Institute for the EnvironmentWestern Sydney UniversityLocked Bag 1797Penrith South NSW2751, Australia
- Global Centre for Land Based InnovationWestern Sydney UniversityBuilding L9, Locked Bag 1797Penrith South NSW2751, Australia
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23
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Wu L, Chen J, Wu H, Qin X, Wang J, Wu Y, Khan MU, Lin S, Xiao Z, Luo X, Zhang Z, Lin W. Insights into the Regulation of Rhizosphere Bacterial Communities by Application of Bio-organic Fertilizer in Pseudostellaria heterophylla Monoculture Regime. Front Microbiol 2016; 7:1788. [PMID: 27899917 PMCID: PMC5110535 DOI: 10.3389/fmicb.2016.01788] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 10/25/2016] [Indexed: 12/27/2022] Open
Abstract
The biomass and quality of Pseudostellariae heterophylla suffers a significant decline under monoculture. Since rhizosphere miobiome plays crucial roles in soil health, deep pyrosequencing combined with qPCR was applied to characterize the composition and structure of soil bacterial community under monoculture and different amendments. The results showed compared with the 1st-year planted (FP), 2nd-year monoculture of P. heterophylla (SP) led to a significant decline in yield and resulted in a significant increase in Fusarium oxysporum but a decline in Burkholderia spp. Bio-organic fertilizer (MT) formulated by combining antagonistic bacteria with organic matter could significantly promote the yield by regulating rhizosphere bacterial community. However, organic fertilizer (MO) without antagonistic bacteria could not suppress Fusarium wilt. Multivariate statistics analysis showed a distinct separation between the healthy samples (FP and MT) and the unhealthy samples (SP and MO), suggesting a strong relationship between soil microbial community and plant performance. Furthermore, we found the application of bio-organic fertilizer MT could significantly increase the bacterial community diversity and restructure microbial community with relatively fewer pathogenic F. oxysporum and more beneficial Burkholderia spp. In conclusion, the application of novel bio-organic fertilizer could effectively suppress Fusarium wilt by enriching the antagonistic bacteria and enhancing the bacterial diversity.
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Affiliation(s)
- Linkun Wu
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Jun Chen
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Hongmiao Wu
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Xianjin Qin
- Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China; College of Crop Science, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Juanying Wang
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Yanhong Wu
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Muhammad U Khan
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Sheng Lin
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Zhigang Xiao
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Xiaomian Luo
- College of Crop Science, Fujian Agriculture and Forestry UniversityFuzhou, China; Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Zhongyi Zhang
- College of Crop Science, Fujian Agriculture and Forestry UniversityFuzhou, China; Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Wenxiong Lin
- College of Life Sciences, Fujian Agriculture and Forestry UniversityFuzhou, China; Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Fujian Agriculture and Forestry UniversityFuzhou, China
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24
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Singh A, Gupta R, Pandey R. Rice Seed Priming with Picomolar Rutin Enhances Rhizospheric Bacillus subtilis CIM Colonization and Plant Growth. PLoS One 2016; 11:e0146013. [PMID: 26742102 PMCID: PMC4711789 DOI: 10.1371/journal.pone.0146013] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 12/12/2015] [Indexed: 11/19/2022] Open
Abstract
The effect of rutin, a bioflavonoid on the growth and biofilm formation of Bacillus subtilis strain CIM was investigated. In addition to swimming, swarming, and twitching potentials of B. subtilis CIM (BS), one picomolar (1 pM) of rutin was also observed to boost the biofilm forming ability of the bacterium. Bio-priming of rice seeds with BS and rutin not only augmented root and shoot lengths but also the photosynthetic pigments like chlorophyll and carotenoid. Similarly, high accumulation of phenolic and flavonoid contents was observed in the leaves. Fluorescent microscopic images revealed that BS plus rutin enhanced callose deposition in the leaves. It was also established that the least formation of reactive oxygen species in BS plus rutin treated rice plants was due to higher free radicals scavenging activity and total antioxidant potential. The results highlight chemo attractant nature of BS towards rutin, which by enhancing biofilm formation and root colonization indirectly strengthened the plants' defensive state.
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Affiliation(s)
- Akanksha Singh
- Department of Microbial Technology and Nematology, CSIR- Central Institute of Medicinal and Aromatic Plants, P.O. CIMAP, Lucknow 226015, India
| | - Rupali Gupta
- Department of Microbial Technology and Nematology, CSIR- Central Institute of Medicinal and Aromatic Plants, P.O. CIMAP, Lucknow 226015, India
| | - Rakesh Pandey
- Department of Microbial Technology and Nematology, CSIR- Central Institute of Medicinal and Aromatic Plants, P.O. CIMAP, Lucknow 226015, India
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