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Ramírez-Pool JA, Calderón-Pérez B, Ruiz-Medrano R, Ortiz-Castro R, Xoconostle-Cazares B. Bacillus Strains as Effective Biocontrol Agents Against Phytopathogenic Bacteria and Promoters of Plant Growth. MICROBIAL ECOLOGY 2024; 87:76. [PMID: 38801423 PMCID: PMC11129970 DOI: 10.1007/s00248-024-02384-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/17/2024] [Indexed: 05/29/2024]
Abstract
Modern crop production relies on the application of chemical pesticides and fertilizers causing environmental and economic challenges. In response, less environmentally impactful alternatives have emerged such as the use of beneficial microorganisms. These microorganisms, particularly plant growth-promoting bacteria (PGPB), have demonstrated their ability to enhance plant growth, protect against various stresses, and reduce the need for chemical inputs. Among the PGPB, Bacillus species have garnered attention due to their adaptability and commercial potential. Recent reports have highlighted Bacillus strains as biocontrol agents against phytopathogenic bacteria while concurrently promoting plant growth. We also examined Bacillus plant growth-promoting abilities in Arabidopsis thaliana seedlings. In this study, we assessed the potential of various Bacillus strains to control diverse phytopathogenic bacteria and inhibit quorum sensing using Chromobacterium violaceum as a model system. In conclusion, our results suggest that bacteria of the genus Bacillus hold significant potential for biotechnological applications. This includes developments aimed at reducing agrochemical use, promoting sustainable agriculture, and enhancing crop yield and protection.
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Affiliation(s)
- José Abrahán Ramírez-Pool
- Departamento de Biotecnología y Bioingeniería, CINVESTAV, Av. Instituto Politécnico Nacional 2508, Mexico City, 07360, Mexico
- Unidad de Biotecnología y Prototipos, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Mexico, Mexico
| | - Berenice Calderón-Pérez
- Departamento de Biotecnología y Bioingeniería, CINVESTAV, Av. Instituto Politécnico Nacional 2508, Mexico City, 07360, Mexico
| | - Roberto Ruiz-Medrano
- Departamento de Biotecnología y Bioingeniería, CINVESTAV, Av. Instituto Politécnico Nacional 2508, Mexico City, 07360, Mexico
| | - Randy Ortiz-Castro
- Red de Estudios Moleculares Avanzados, Instituto de Ecología A.C., Carretera Antigua a Coatepec 351, Xalapa, Veracruz, 91073, Mexico.
| | - Beatriz Xoconostle-Cazares
- Departamento de Biotecnología y Bioingeniería, CINVESTAV, Av. Instituto Politécnico Nacional 2508, Mexico City, 07360, Mexico.
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Giacomelli Ribeiro H, Teresinha Van Der Sand S. Exploring the Trends in Actinobacteria as Biological Control Agents of Phytopathogenic Fungi: A (Mini)-Review. Indian J Microbiol 2024; 64:70-81. [PMID: 38468744 PMCID: PMC10924869 DOI: 10.1007/s12088-023-01166-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 11/27/2023] [Indexed: 03/13/2024] Open
Abstract
Biological control has been considered a sustainable alternative to combat phytopathogens. The increase of studies in the past few years involving Actinobacteria as biological control agents of phytopathogenic fungi has motivated us to search for which Actinobacteria genus that have been studied in the last five years and explore their mechanisms of antifungal activity. The accesses were carried out on three multidisciplinary digital platforms: PubMED/MedLine, Web of Science and Scopus. Actinobacteria from genus Amycolatopsis, Curtobacterium, Kocuria, Nocardioides, Nocardiopsis, Saccharopolyspora, Streptoverticillium and especially Streptomyces showed a broad antifungal spectrum through several antibiosis mechanisms such as the production of natural antifungal compounds, siderophores, extracellular hydrolytic enzymes and activation of plant defense system. We observed the formation of a methodology based on antagonistic compounds bioactivity to select efficient Actinobacteria to be used as biological control agents against phytopathogenic fungi. The use of multifunctional Actinobacteria has been proven to be efficient, not only by its natural protective activity against phytopathogenic fungi but also because of their ability to act as plant growth-promoting bacteria.
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Affiliation(s)
- Heloísa Giacomelli Ribeiro
- Departamento de Microbiologia, Imunologia e Parasitologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Ramiro Barcelos 2600, Porto Alegre, RS 90035-003 Brazil
| | - Sueli Teresinha Van Der Sand
- Departamento de Microbiologia, Imunologia e Parasitologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Ramiro Barcelos 2600, Porto Alegre, RS 90035-003 Brazil
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Law SR, Mathes F, Paten AM, Alexandre PA, Regmi R, Reid C, Safarchi A, Shaktivesh S, Wang Y, Wilson A, Rice SA, Gupta VVSR. Life at the borderlands: microbiomes of interfaces critical to One Health. FEMS Microbiol Rev 2024; 48:fuae008. [PMID: 38425054 PMCID: PMC10977922 DOI: 10.1093/femsre/fuae008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 02/12/2024] [Accepted: 02/27/2024] [Indexed: 03/02/2024] Open
Abstract
Microbiomes are foundational components of the environment that provide essential services relating to food security, carbon sequestration, human health, and the overall well-being of ecosystems. Microbiota exert their effects primarily through complex interactions at interfaces with their plant, animal, and human hosts, as well as within the soil environment. This review aims to explore the ecological, evolutionary, and molecular processes governing the establishment and function of microbiome-host relationships, specifically at interfaces critical to One Health-a transdisciplinary framework that recognizes that the health outcomes of people, animals, plants, and the environment are tightly interconnected. Within the context of One Health, the core principles underpinning microbiome assembly will be discussed in detail, including biofilm formation, microbial recruitment strategies, mechanisms of microbial attachment, community succession, and the effect these processes have on host function and health. Finally, this review will catalogue recent advances in microbiology and microbial ecology methods that can be used to profile microbial interfaces, with particular attention to multi-omic, advanced imaging, and modelling approaches. These technologies are essential for delineating the general and specific principles governing microbiome assembly and functions, mapping microbial interconnectivity across varying spatial and temporal scales, and for the establishment of predictive frameworks that will guide the development of targeted microbiome-interventions to deliver One Health outcomes.
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Affiliation(s)
- Simon R Law
- CSIRO MOSH-Future Science Platform, Australia
- CSIRO Agriculture and Food, Canberra, ACT 2601, Australia
| | - Falko Mathes
- CSIRO MOSH-Future Science Platform, Australia
- CSIRO Environment, Floreat, WA 6014, Australia
| | - Amy M Paten
- CSIRO MOSH-Future Science Platform, Australia
- CSIRO Environment, Canberra, ACT 2601, Australia
| | - Pamela A Alexandre
- CSIRO MOSH-Future Science Platform, Australia
- CSIRO Agriculture and Food, St Lucia, Qld 4072, Australia
| | - Roshan Regmi
- CSIRO MOSH-Future Science Platform, Australia
- CSIRO Agriculture and Food, Urrbrae, SA 5064, Australia
| | - Cameron Reid
- CSIRO MOSH-Future Science Platform, Australia
- CSIRO Environment, Urrbrae, SA 5064, Australia
| | - Azadeh Safarchi
- CSIRO MOSH-Future Science Platform, Australia
- CSIRO Health and Biosecurity, Westmead, NSW 2145, Australia
| | - Shaktivesh Shaktivesh
- CSIRO MOSH-Future Science Platform, Australia
- CSIRO Data 61, Clayton, Vic 3168, Australia
| | - Yanan Wang
- CSIRO MOSH-Future Science Platform, Australia
- CSIRO Health and Biosecurity, Adelaide SA 5000, Australia
| | - Annaleise Wilson
- CSIRO MOSH-Future Science Platform, Australia
- CSIRO Health and Biosecurity, Geelong, Vic 3220, Australia
| | - Scott A Rice
- CSIRO MOSH-Future Science Platform, Australia
- CSIRO Agriculture, and Food, Westmead, NSW 2145, Australia
| | - Vadakattu V S R Gupta
- CSIRO MOSH-Future Science Platform, Australia
- CSIRO Agriculture and Food, Urrbrae, SA 5064, Australia
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Roca A, Cabeo M, Enguidanos C, Martínez-Checa F, Sampedro I, Llamas I. Potential of the quorum-quenching and plant-growth promoting halotolerant Bacillus toyonensis AA1EC1 as biocontrol agent. Microb Biotechnol 2024; 17:e14420. [PMID: 38532596 DOI: 10.1111/1751-7915.14420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 01/18/2024] [Accepted: 01/22/2024] [Indexed: 03/28/2024] Open
Abstract
The use of fertilizers and pesticides to control plant diseases is widespread in intensive farming causing adverse effects together with the development of antimicrobial resistance pathogens. As the virulence of many Gram-negative phytopathogens is controlled by N-acyl-homoserine lactones (AHLs), the enzymatic disruption of this type of quorum-sensing (QS) signal molecules, mechanism known as quorum quenching (QQ), has been proposed as a promising alternative antivirulence therapy. In this study, a novel strain of Bacillus toyonensis isolated from the halophyte plant Arthrocaulon sp. exhibited numerous traits associated with plant growth promotion (PGP) and degraded a broad range of AHLs. Three lactonases and an acylase enzymes were identified in the bacterial genome and verified in vitro. The AHL-degrading activity of strain AA1EC1 significantly attenuated the virulence of relevant phytopathogens causing reduction of soft rot symptoms on potato and carrots. In vivo assays showed that strain AA1EC1 significantly increased plant length, stem width, root and aerial dry weights and total weight of tomato and protected plants against Pseudomonas syringae pv. tomato. To our knowledge, this is the first report to demonstrate PGP and QQ activities in the species B. toyonensis that make this strain as a promising phytostimulant and biocontrol agent.
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Affiliation(s)
- Amalia Roca
- Department of Microbiology, Faculty of Pharmacy, University of Granada, Granada, Spain
- Institute of Biotechnology, Biomedical Research Center (CIBM), University of Granada, Granada, Spain
| | - Mónica Cabeo
- Department of Microbiology, Faculty of Pharmacy, University of Granada, Granada, Spain
| | - Carlos Enguidanos
- Department of Microbiology, Faculty of Pharmacy, University of Granada, Granada, Spain
| | - Fernando Martínez-Checa
- Department of Microbiology, Faculty of Pharmacy, University of Granada, Granada, Spain
- Institute of Biotechnology, Biomedical Research Center (CIBM), University of Granada, Granada, Spain
| | - Inmaculada Sampedro
- Department of Microbiology, Faculty of Pharmacy, University of Granada, Granada, Spain
- Institute of Biotechnology, Biomedical Research Center (CIBM), University of Granada, Granada, Spain
| | - Inmaculada Llamas
- Department of Microbiology, Faculty of Pharmacy, University of Granada, Granada, Spain
- Institute of Biotechnology, Biomedical Research Center (CIBM), University of Granada, Granada, Spain
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Wang Y, Sun Z, Zhao Q, Yang X, Li Y, Zhou H, Zhao M, Zheng H. Whole-genome analysis revealed the growth-promoting and biological control mechanism of the endophytic bacterial strain Bacillus halotolerans Q2H2, with strong antagonistic activity in potato plants. Front Microbiol 2024; 14:1287921. [PMID: 38235428 PMCID: PMC10792059 DOI: 10.3389/fmicb.2023.1287921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 11/21/2023] [Indexed: 01/19/2024] Open
Abstract
Introduction Endophytes are colonizers of healthy plants and they normally exhibit biocontrol activities, such as reducing the occurrence of plant diseases and promoting plant growth. The endophytic bacterium Bacillus halotolerans Q2H2 (Q2H2) was isolated from the roots of potato plants and was found to have an antagonistic effect on pathogenic fungi. Methods Q2H2 was identified by morphological observations, physiological and biochemical identification, and 16S rRNA gene sequence analysis. Genes related to the anti-fungal and growth-promoting effects were analyzed using whole-genome sequencing and comparative genomic analysis. Finally, we analyzed the growth-promoting and biocontrol activities of Q2H2 in potato plants using pot experiments. Results Antagonism and non-volatile substance plate tests showed that Q2H2 had strong antagonism against Fusarium oxysporum, Fusarium commune, Fusarium graminearum, Fusarium brachygibbosum, Rhizoctonia solani and Stemphylium solani. The plate test showed that Q2H2 had the ability to produce proteases, cellulases, β-1,3-glucanase, dissolved organic phosphate, siderophores, indole-3-acetic acid (IAA), ammonia and fix nitrogen. The suitable growth ranges of Q2H2 under different forms of abiotic stress were pH 5-9, a temperature of 15-30°C, and a salt concentration of 1-5%. Though whole-genome sequencing, we obtained sequencing data of approximately 4.16 MB encompassed 4,102 coding sequences. We predicted 10 secondary metabolite gene clusters related to antagonism and growth promotion, including five known products surfactin, bacillaene, fengycin, bacilysin, bacillibactin, and subtilosin A. Average nucleotide identity and comparative genomic analyses revealed that Q2H2 was Bacillus halotolerans. Through gene function annotation, we analyzed genes related to antagonism and plant growth promotion in the Q2H2 genome. These included genes involved in phosphate metabolism (pstB, pstA, pstC, and pstS), nitrogen fixation (nifS, nifU, salA, and sufU), ammonia production (gudB, rocG, nasD, and nasE), siderophore production (fhuC, fhuG, fhuB, and fhuD), IAA production (trpABFCDE), biofilm formation (tasA, bslA, and bslB), and volatile compound production (alsD, ilvABCDEHKY, metH, and ispE), and genes encoding hydrolases (eglS, amyE, gmuD, ganB, sleL, and ydhD). The potato pot test showed that Q2H2 had an obvious growth-promoting effect on potato roots and better control of Fusarium wilt than carbendazim. Conclusion These findings suggest that the strain-specific genes identified in bacterial endophytes may reveal important antagonistic and plant growth-promoting mechanisms.
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Affiliation(s)
- Yuhu Wang
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot, China
| | - Zhenqi Sun
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot, China
| | - Qianqian Zhao
- Institute of Agro-Food Technology, Jilin Academy of Agricultural Sciences, Changchun, China
| | - Xiangdong Yang
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, Changchun, China
| | - Yahui Li
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot, China
| | - Hongyou Zhou
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot, China
| | - Mingmin Zhao
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot, China
| | - Hongli Zheng
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot, China
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Bhagat N, Vakhlu J. Effects of biocontrol Bacillus sp. strain D5 on the pathogenic Fusarium oxysporum R1 at the microscopic and molecular level in Crocus sativus L. (saffron) corm. FEMS MICROBES 2024; 5:xtad025. [PMID: 38250179 PMCID: PMC10799715 DOI: 10.1093/femsmc/xtad025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 11/27/2023] [Accepted: 12/24/2023] [Indexed: 01/23/2024] Open
Abstract
Corm rot of saffron caused by Fusarium oxysporum is a major threat to saffron cultivation the world over. To minimize the ill effects of chemical fungicides, attention has been shifted to the use of biocontrol agents for disease management in a sustainable way. In saffron, various biocontrol agents against corm rot disease have been reported and characterized but no study has been done so far to understand their interaction at the molecular level. The present study was conducted to unravel the mechanism of action of an already characterized native biocontrol agent i.e. Bacillus sp. strain D5 (Bar D5) against F. oxsporum R1 (Fox R1) in the saffron corm. The growth inhibition of Fox R1 was observed in vitro and in planta (saffron corm) by real time imaging. Bacillus sp. strain D5 reduced Fox R1 load in infected corms by 50% as quantified by q-PCR and the colony-forming unit method. Comparative transcriptome analysis revealed upregulation and downregulation of various Fox R1 genes in presence of Bar D5. The genes related to carbon metabolism, cell wall and membrane synthesis, and growth of Fox R1 were significantly downregulated in Bar D5-primed and Fox R1-inoculated corms as compared to only Fox R1-inoculated corms.
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Affiliation(s)
- Nancy Bhagat
- Metagenomics Laboratory, School of Biotechnology, University of Jammu, Jammu, 180006, Jammu and Kashmir, India
| | - Jyoti Vakhlu
- Metagenomics Laboratory, School of Biotechnology, University of Jammu, Jammu, 180006, Jammu and Kashmir, India
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Bakaeva M, Chetverikov S, Starikov S, Kendjieva A, Khudaygulov G, Chetverikova D. Effect of Plant Growth-Promoting Bacteria on Antioxidant Status, Acetolactate Synthase Activity, and Growth of Common Wheat and Canola Exposed to Metsulfuron-Methyl. J Xenobiot 2024; 14:79-95. [PMID: 38249102 PMCID: PMC10801594 DOI: 10.3390/jox14010005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 12/17/2023] [Accepted: 12/23/2023] [Indexed: 01/23/2024] Open
Abstract
Metsulfuron-methyl, a widely used herbicide, could cause damage to the sensitive plants in crop-rotation systems at extremely low levels in the soil. The potential of plant growth-promoting bacteria (PGPB) for enhancing the resistance of plants against herbicide stress has been discovered recently. Therefore, it is poorly understood how physiological processes occur in plants, while PGPB reduce the phytotoxicity of herbicides for agricultural crops. In greenhouse studies, the effect of strains Pseudomonas protegens DA1.2 and Pseudomonas chlororaphis 4CH on oxidative damage, acetolactate synthase (ALS), enzymatic and non-enzymatic antioxidants in canola (Brassica napus L.), and wheat (Triticum aestivum L.) were investigated under two levels (0.05 and 0.25 mg∙kg-1) of metsulfuron-methyl using spectrophotometric assays. The inoculation of herbicide-exposed wheat with bacteria significantly increased the shoots fresh weight (24-28%), amount of glutathione GSH (60-73%), and flavonoids (5-14%), as well as activity of ascorbate peroxidase (129-140%), superoxide dismutase SOD (35-49%), and ALS (50-57%). Bacterial treatment stimulated the activity of SOD (37-94%), ALS (65-73%), glutathione reductase (19-20%), and the accumulation of GSH (61-261%), flavonoids (17-22%), and shoots weight (27-33%) in herbicide-exposed canola. Simultaneous inoculation prevented lipid peroxidation induced by metsulfuron-methyl in sensitive plants. Based on the findings, it is possible that the protective role of bacterial strains against metsulfuron-metil is linked to antioxidant system activation.
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Affiliation(s)
- Margarita Bakaeva
- Ufa Institute of Biology, Ufa Federal Research Centre, Russian Academy of Sciences, 450054 Ufa, Russia; (S.C.); (S.S.); (A.K.); (G.K.); (D.C.)
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Ndayambaza B, Si J, Deng Y, Jia B, He X, Zhou D, Wang C, Zhu X, Liu Z, Qin J, Wang B, Bai X. The Euphrates Poplar Responses to Abiotic Stress and Its Unique Traits in Dry Regions of China (Xinjiang and Inner Mongolia): What Should We Know? Genes (Basel) 2023; 14:2213. [PMID: 38137039 PMCID: PMC10743205 DOI: 10.3390/genes14122213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/27/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023] Open
Abstract
At the moment, drought, salinity, and low-temperature stress are ubiquitous environmental issues. In arid regions including Xinjiang and Inner Mongolia and other areas worldwide, the area of tree plantations appears to be rising, triggering tree growth. Water is a vital resource in the agricultural systems of countries impacted by aridity and salinity. Worldwide efforts to reduce quantitative yield losses on Populus euphratica by adapting tree plant production to unfavorable environmental conditions have been made in response to the responsiveness of the increasing control of water stress. Although there has been much advancement in identifying the genes that resist abiotic stresses, little is known about how plants such as P. euphratica deal with numerous abiotic stresses. P. euphratica is a varied riparian plant that can tolerate drought, salinity, low temperatures, and climate change, and has a variety of water stress adaptability abilities. To conduct this review, we gathered all available information throughout the Web of Science, the Chinese National Knowledge Infrastructure, and the National Center for Biotechnology Information on the impact of abiotic stress on the molecular mechanism and evolution of gene families at the transcription level. The data demonstrated that P. euphratica might gradually adapt its stomatal aperture, photosynthesis, antioxidant activities, xylem architecture, and hydraulic conductivity to endure extreme drought and salt stress. Our analyses will give readers an understanding of how to manage a gene family in desert trees and the influence of abiotic stresses on the productivity of tree plants. They will also give readers the knowledge necessary to improve biotechnology-based tree plant stress tolerance for sustaining yield and quality trees in China's arid regions.
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Affiliation(s)
- Boniface Ndayambaza
- Key Laboratory of Ecohydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (B.N.); (B.J.); (X.H.); (D.Z.); (C.W.); (X.Z.); (Z.L.); (J.Q.); (B.W.); (X.B.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jianhua Si
- Key Laboratory of Ecohydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (B.N.); (B.J.); (X.H.); (D.Z.); (C.W.); (X.Z.); (Z.L.); (J.Q.); (B.W.); (X.B.)
| | - Yanfang Deng
- Qilian Mountain National Park Qinghai Provincial Administration, Xining 810000, China;
| | - Bing Jia
- Key Laboratory of Ecohydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (B.N.); (B.J.); (X.H.); (D.Z.); (C.W.); (X.Z.); (Z.L.); (J.Q.); (B.W.); (X.B.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaohui He
- Key Laboratory of Ecohydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (B.N.); (B.J.); (X.H.); (D.Z.); (C.W.); (X.Z.); (Z.L.); (J.Q.); (B.W.); (X.B.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- Faculty of Resources and Environment, Baotou Teachers’ College, Inner Mongolia University of Science and Technology, Baotou 014030, China
| | - Dongmeng Zhou
- Key Laboratory of Ecohydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (B.N.); (B.J.); (X.H.); (D.Z.); (C.W.); (X.Z.); (Z.L.); (J.Q.); (B.W.); (X.B.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chunlin Wang
- Key Laboratory of Ecohydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (B.N.); (B.J.); (X.H.); (D.Z.); (C.W.); (X.Z.); (Z.L.); (J.Q.); (B.W.); (X.B.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xinglin Zhu
- Key Laboratory of Ecohydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (B.N.); (B.J.); (X.H.); (D.Z.); (C.W.); (X.Z.); (Z.L.); (J.Q.); (B.W.); (X.B.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zijin Liu
- Key Laboratory of Ecohydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (B.N.); (B.J.); (X.H.); (D.Z.); (C.W.); (X.Z.); (Z.L.); (J.Q.); (B.W.); (X.B.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jie Qin
- Key Laboratory of Ecohydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (B.N.); (B.J.); (X.H.); (D.Z.); (C.W.); (X.Z.); (Z.L.); (J.Q.); (B.W.); (X.B.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Boyang Wang
- Key Laboratory of Ecohydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (B.N.); (B.J.); (X.H.); (D.Z.); (C.W.); (X.Z.); (Z.L.); (J.Q.); (B.W.); (X.B.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xue Bai
- Key Laboratory of Ecohydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; (B.N.); (B.J.); (X.H.); (D.Z.); (C.W.); (X.Z.); (Z.L.); (J.Q.); (B.W.); (X.B.)
- University of Chinese Academy of Sciences, Beijing 100049, China
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Luo L, Tao G, Qin F, Luo B, Liu J, Xu A, Li W, Hu Y, Yi Y. Phosphate-solubilizing fungi enhances the growth of Brassica chinensis L. and reduces arsenic uptake by reshaping the rhizosphere microbial community. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:120805-120819. [PMID: 37945954 DOI: 10.1007/s11356-023-30359-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 10/05/2023] [Indexed: 11/12/2023]
Abstract
High concentrations of arsenic in soil and plant systems are a threat to human health and ecosystems. The levels of phosphate ions in the soil strongly influence the soil efficacy and arsenic absorption by plants. This study investigated the effects of phosphate-solubilizing fungi (PSF) on environmental factors and structural changes in microbial community in soils contaminated with arsenic. Four experimental groups were created: control (CK), Penicillium GYAHH-CCT186 (W186), Aspergillus AHBB-CT196 (W196), and Penicillium GYAHH-CCT186 + Aspergillus AHBB-CT196 (W186 + W196), with Pakchoi (Brassica chinensis L.) as the test plant. Analysis of altered nutrient levels, enzyme activities and microbial community structure in the soil as well as the growth and physiological characteristics of Pakchoi, revealed a significant increase in the available phosphorus (AP), organic matter (OM), cation exchange capacity (CEC) and available arsenic (AAs) content of the soil following W186 + W196, W196 and W186 treatments. All experimental treatments enhanced the activity of soil β-glucosidase (β-GC) and soil catalase (S-CAT). W186 + W196 and W196 treatments significantly enhanced soil acid phosphatase (S-ACP) activity. Besides, W186 + W196 treatment significantly induced dehydrogenase (S-DHA) activity. Further, of the treatment with PSF increased the fresh weight, root length, plant height and chlorophyll levels while decreasing the arsenic accumulation in Pakchoi. Exposure to PSF also increased the activity of Ascomycota, Basidiomycota, Chytridiomycota, unclassified_Fungi, Mortierellomycota, Cryptomycota and Rozellomycota in the soil. The relative abundance of Ascomycota, Basidiomycota, and Mortierellomycota was positively correlated with the available nutrients (except iron) in the soil as well as enzyme activities. Consequently, the PSF improved the quality of soil and the safety of Pakchoi, suggesting that PSF can be utilized for the remediation of arsenic-contaminated soil.
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Affiliation(s)
- Lin Luo
- School of Life Sciences, Guizhou Normal University, Guiyang, 550025, China
- Guizhou Key Laboratory of Plant Physiology and Developmental Regulation, Guizhou Normal University, Huaxi District, Guiyang, 550025, Guizhou Province, China
| | - Gang Tao
- College of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang, 550025, China
| | - Fanxin Qin
- School of Life Sciences, Guizhou Normal University, Guiyang, 550025, China.
- Guizhou Key Laboratory of Plant Physiology and Developmental Regulation, Guizhou Normal University, Huaxi District, Guiyang, 550025, Guizhou Province, China.
| | - Banglin Luo
- College of Resources and Environment/Key Laboratory of Eco-Environment in Three Gorges Region (Ministry of Education), Southwest University, Chongqing, 400716, China
| | - Jing Liu
- School of Life Sciences, Guizhou Normal University, Guiyang, 550025, China
- Guizhou Key Laboratory of Plant Physiology and Developmental Regulation, Guizhou Normal University, Huaxi District, Guiyang, 550025, Guizhou Province, China
| | - Anqi Xu
- School of Life Sciences, Guizhou Normal University, Guiyang, 550025, China
- Guizhou Key Laboratory of Plant Physiology and Developmental Regulation, Guizhou Normal University, Huaxi District, Guiyang, 550025, Guizhou Province, China
| | - Wanyu Li
- School of Life Sciences, Guizhou Normal University, Guiyang, 550025, China
- Guizhou Key Laboratory of Plant Physiology and Developmental Regulation, Guizhou Normal University, Huaxi District, Guiyang, 550025, Guizhou Province, China
| | - Yanjiao Hu
- School of Life Sciences, Guizhou Normal University, Guiyang, 550025, China
- Guizhou Key Laboratory of Plant Physiology and Developmental Regulation, Guizhou Normal University, Huaxi District, Guiyang, 550025, Guizhou Province, China
| | - Yin Yi
- School of Life Sciences, Guizhou Normal University, Guiyang, 550025, China
- Guizhou Key Laboratory of Plant Physiology and Developmental Regulation, Guizhou Normal University, Huaxi District, Guiyang, 550025, Guizhou Province, China
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10
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Ngalimat MS, Mohd Hata E, Zulperi D, Ismail SI, Ismail MR, Mohd Zainudin NAI, Saidi NB, Yusof MT. A laudable strategy to manage bacterial panicle blight disease of rice using biocontrol agents. J Basic Microbiol 2023; 63:1180-1195. [PMID: 37348082 DOI: 10.1002/jobm.202300182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/25/2023] [Accepted: 06/02/2023] [Indexed: 06/24/2023]
Abstract
Bacterial panicle blight (BPB) disease is a dreadful disease in rice-producing countries. Burkholderia glumae, a Gram-negative, rod-shaped, and flagellated bacterium was identified as the primary culprit for BPB disease. In 2019, the disease was reported in 18 countries, and to date, it has been spotted in 26 countries. Rice yield has been reduced by up to 75% worldwide due to this disease. Interestingly, the biocontrol strategy offers a promising alternative to manage BPB disease. This review summarizes the management status of BPB disease using biological control agents (BCA). Bacteria from the genera Bacillus, Burkholderia, Enterobacter, Pantoea, Pseudomonas, and Streptomyces have been examined as BCA under in vitro, glasshouse, and field conditions. Besides bacteria, bacteriophages have also been reported to reduce BPB pathogens under in vitro and glasshouse conditions. Here, the overview of the mechanisms of bacteria and bacteriophages in controlling BPB pathogens is addressed. The applications of BCA using various delivery methods could effectively manage BPB disease to benefit the agroecosystems and food security.
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Affiliation(s)
- Mohamad S Ngalimat
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Erneeza Mohd Hata
- Sustainable Agronomy and Crop Protection, Institute of Plantation Studies, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Dzarifah Zulperi
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Siti I Ismail
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mohd R Ismail
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Nur A I Mohd Zainudin
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Noor B Saidi
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mohd T Yusof
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
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11
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Liu X, Wang Y, Han L, Xia Y, Xie J. A virus induces alterations in root morphology while exerting minimal effects on the rhizosphere and endosphere microorganisms in rice. FEMS Microbiol Ecol 2023; 99:fiad113. [PMID: 37742208 DOI: 10.1093/femsec/fiad113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/11/2023] [Accepted: 09/19/2023] [Indexed: 09/26/2023] Open
Abstract
The highly destructive southern rice black-streaked dwarf virus (SRBSDV) causes significant losses in rice production. To understand its impact on rice root, we studied fibrous root development and root microbiota variation (rhizosphere and endosphere) after SRBSDV infection. SRBSDV infection reduced the number and length of fibrous roots in rice. Interestingly, the rhizosphere had higher bacterial diversity and abundance at the initial (0 days) and 30-day postinfection stages, while 30-day-old roots showed increased diversity and abundance. However, there were no significant differences in microbiota diversity between infected and noninfected rice plants. The major rhizosphere microbiota included Proteobacteria, Bacteroidota, Acidobacteriota, and Planctomycetota, comprising about 80% of the community. The endosphere was dominated by Proteobacteria and Cyanobacteria, constituting over 90%, with Bacteroidota as the next most prominent group. Further, we identified differentially expressed genes related to plant-pathogen interactions, plant hormone signal, and ABC transporters, potentially affecting root morphology. Notably, specific bacteria (e.g. Inquilinus and Actinoplanes) showed correlations with these pathways. In conclusion, SRBSDV primarily influences root growth through host metabolism, rather than exerting direct effects on the root microbiota. These insights into the interactions among the pathogen, rice plant, and associated microbiota could have implications for managing SRBSDV's detrimental effects on rice production.
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Affiliation(s)
- Xuewei Liu
- School of Life Sciences, Genetic Engineering Research Center, Chongqing University, Daxuecheng South Road No. 55, Shapingba District 401331, Chongqing, China
- Chongqing Engineering Research Center for Fungal Insecticides, Daxuecheng South Road No. 55, Shapingba District 401331, Chongqing, China
- Key Laboratory of Gene Function and Regulation Technology under Chongqing Municipal Education Commission, Daxuecheng South Road No. 55, Shapingba District 401331, Chongqing, China
| | - Yirong Wang
- School of Life Sciences, Genetic Engineering Research Center, Chongqing University, Daxuecheng South Road No. 55, Shapingba District 401331, Chongqing, China
- Chongqing Engineering Research Center for Fungal Insecticides, Daxuecheng South Road No. 55, Shapingba District 401331, Chongqing, China
- Key Laboratory of Gene Function and Regulation Technology under Chongqing Municipal Education Commission, Daxuecheng South Road No. 55, Shapingba District 401331, Chongqing, China
| | - Lijuan Han
- School of Life Sciences, Genetic Engineering Research Center, Chongqing University, Daxuecheng South Road No. 55, Shapingba District 401331, Chongqing, China
- Chongqing Engineering Research Center for Fungal Insecticides, Daxuecheng South Road No. 55, Shapingba District 401331, Chongqing, China
- Key Laboratory of Gene Function and Regulation Technology under Chongqing Municipal Education Commission, Daxuecheng South Road No. 55, Shapingba District 401331, Chongqing, China
| | - Yuxian Xia
- School of Life Sciences, Genetic Engineering Research Center, Chongqing University, Daxuecheng South Road No. 55, Shapingba District 401331, Chongqing, China
- Chongqing Engineering Research Center for Fungal Insecticides, Daxuecheng South Road No. 55, Shapingba District 401331, Chongqing, China
- Key Laboratory of Gene Function and Regulation Technology under Chongqing Municipal Education Commission, Daxuecheng South Road No. 55, Shapingba District 401331, Chongqing, China
| | - Jiaqin Xie
- School of Life Sciences, Genetic Engineering Research Center, Chongqing University, Daxuecheng South Road No. 55, Shapingba District 401331, Chongqing, China
- Chongqing Engineering Research Center for Fungal Insecticides, Daxuecheng South Road No. 55, Shapingba District 401331, Chongqing, China
- Key Laboratory of Gene Function and Regulation Technology under Chongqing Municipal Education Commission, Daxuecheng South Road No. 55, Shapingba District 401331, Chongqing, China
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12
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Dow L, Gallart M, Ramarajan M, Law SR, Thatcher LF. Streptomyces and their specialised metabolites for phytopathogen control - comparative in vitro and in planta metabolic approaches. FRONTIERS IN PLANT SCIENCE 2023; 14:1151912. [PMID: 37389291 PMCID: PMC10301723 DOI: 10.3389/fpls.2023.1151912] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 05/30/2023] [Indexed: 07/01/2023]
Abstract
In the search for new crop protection microbial biocontrol agents, isolates from the genus Streptomyces are commonly found with promising attributes. Streptomyces are natural soil dwellers and have evolved as plant symbionts producing specialised metabolites with antibiotic and antifungal activities. Streptomyces biocontrol strains can effectively suppress plant pathogens via direct antimicrobial activity, but also induce plant resistance through indirect biosynthetic pathways. The investigation of factors stimulating the production and release of Streptomyces bioactive compounds is commonly conducted in vitro, between Streptomyces sp. and a plant pathogen. However, recent research is starting to shed light on the behaviour of these biocontrol agents in planta, where the biotic and abiotic conditions share little similarity to those of controlled laboratory conditions. With a focus on specialised metabolites, this review details (i) the various methods by which Streptomyces biocontrol agents employ specialised metabolites as an additional line of defence against plant pathogens, (ii) the signals shared in the tripartite system of plant, pathogen and biocontrol agent, and (iii) an outlook on new approaches to expedite the identification and ecological understanding of these metabolites under a crop protection lens.
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Affiliation(s)
- Lachlan Dow
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food, Acton, ACT, Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Microbiomes for One Systems Health Future Science Platform, Acton, ACT, Australia
| | - Marta Gallart
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food, Acton, ACT, Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Advanced Engineering Biology Future Science Platform, Acton, ACT, Australia
| | - Margaret Ramarajan
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food, Acton, ACT, Australia
| | - Simon R. Law
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food, Acton, ACT, Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Microbiomes for One Systems Health Future Science Platform, Acton, ACT, Australia
| | - Louise F. Thatcher
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food, Acton, ACT, Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Microbiomes for One Systems Health Future Science Platform, Acton, ACT, Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Advanced Engineering Biology Future Science Platform, Acton, ACT, Australia
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13
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Upadhayay VK, Chitara MK, Mishra D, Jha MN, Jaiswal A, Kumari G, Ghosh S, Patel VK, Naitam MG, Singh AK, Pareek N, Taj G, Maithani D, Kumar A, Dasila H, Sharma A. Synergistic impact of nanomaterials and plant probiotics in agriculture: A tale of two-way strategy for long-term sustainability. Front Microbiol 2023; 14:1133968. [PMID: 37206335 PMCID: PMC10189066 DOI: 10.3389/fmicb.2023.1133968] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 03/06/2023] [Indexed: 05/21/2023] Open
Abstract
Modern agriculture is primarily focused on the massive production of cereals and other food-based crops in a sustainable manner in order to fulfill the food demands of an ever-increasing global population. However, intensive agricultural practices, rampant use of agrochemicals, and other environmental factors result in soil fertility degradation, environmental pollution, disruption of soil biodiversity, pest resistance, and a decline in crop yields. Thus, experts are shifting their focus to other eco-friendly and safer methods of fertilization in order to ensure agricultural sustainability. Indeed, the importance of plant growth-promoting microorganisms, also determined as "plant probiotics (PPs)," has gained widespread recognition, and their usage as biofertilizers is being actively promoted as a means of mitigating the harmful effects of agrochemicals. As bio-elicitors, PPs promote plant growth and colonize soil or plant tissues when administered in soil, seeds, or plant surface and are used as an alternative means to avoid heavy use of agrochemicals. In the past few years, the use of nanotechnology has also brought a revolution in agriculture due to the application of various nanomaterials (NMs) or nano-based fertilizers to increase crop productivity. Given the beneficial properties of PPs and NMs, these two can be used in tandem to maximize benefits. However, the use of combinations of NMs and PPs, or their synergistic use, is in its infancy but has exhibited better crop-modulating effects in terms of improvement in crop productivity, mitigation of environmental stress (drought, salinity, etc.), restoration of soil fertility, and strengthening of the bioeconomy. In addition, a proper assessment of nanomaterials is necessary before their application, and a safer dose of NMs should be applicable without showing any toxic impact on the environment and soil microbial communities. The combo of NMs and PPs can also be encapsulated within a suitable carrier, and this method aids in the controlled and targeted delivery of entrapped components and also increases the shelf life of PPs. However, this review highlights the functional annotation of the combined impact of NMs and PPs on sustainable agricultural production in an eco-friendly manner.
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Affiliation(s)
- Viabhav Kumar Upadhayay
- Department of Microbiology, College of Basic Sciences & Humanities, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
- *Correspondence: Viabhav Kumar Upadhayay,
| | - Manoj Kumar Chitara
- Department of Plant Pathology, College of Agriculture, A.N.D University of Agriculture and Technology, Ayodhya, Uttar Pradesh, India
- Manoj Kumar Chitara,
| | - Dhruv Mishra
- Department of Biological Sciences, College of Basic Sciences and Humanities, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India
| | - Manindra Nath Jha
- Department of Microbiology, College of Basic Sciences & Humanities, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - Aman Jaiswal
- Department of Microbiology, College of Basic Sciences & Humanities, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - Geeta Kumari
- Department of Microbiology, College of Basic Sciences & Humanities, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - Saipayan Ghosh
- Department of Horticulture, PGCA, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - Vivek Kumar Patel
- Department of Plant Pathology, PGCA, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - Mayur G. Naitam
- Department of Microbiology, College of Basic Sciences & Humanities, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - Ashish Kumar Singh
- Department of Biotechnology and Synthetic Biology, Center of Innovative and Applied Bioprocessing, Sector 81, Mohali, India
| | - Navneet Pareek
- Department of Soil Science, College of Agriculture, G. B. Pant University of Agriculture and Technology, Pantnagar, India
| | - Gohar Taj
- Department of Molecular Biology & Genetic Engineering, College of Basic Sciences and Humanities, GBPUA&; T, Pantnagar, Uttarakhand, India
| | | | - Ankit Kumar
- Department of Horticulture, College of Agriculture, G. B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India
| | - Hemant Dasila
- Department of Microbiology, Akal College of Basic Sciences, Eternal University, Sirmaur, Himachal Pradesh, India
| | - Adita Sharma
- College of Fisheries, Dholi, Dr. Rajendra Prasad Central Agricultural University, Muzaffarpur, Bihar, India
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14
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Sindhu SS, Sehrawat A, Glick BR. The involvement of organic acids in soil fertility, plant health and environment sustainability. Arch Microbiol 2022; 204:720. [DOI: 10.1007/s00203-022-03321-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/22/2022] [Accepted: 11/03/2022] [Indexed: 11/21/2022]
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