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Shan J, Peng F, Yu J, Li Q. Identification and Characterization of a Plant Endophytic Fungus Paraphaosphaeria sp. JRF11 and Its Growth-Promoting Effects. J Fungi (Basel) 2024; 10:120. [PMID: 38392792 PMCID: PMC10890554 DOI: 10.3390/jof10020120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/22/2024] [Accepted: 01/28/2024] [Indexed: 02/24/2024] Open
Abstract
Endophytic fungi establish mutualistic relationships with host plants and can promote the growth and development of plants. In this study, the endophytic fungus JRF11 was isolated from Carya illinoinensis. Sequence analysis of the internal transcribed spacer (ITS) region and 18S rRNA gene combined with colonial and conidial morphology identified JRF11 as a Paraphaosphaeria strain. Plant-fungus interaction assays revealed that JRF11 showed significant growth-promoting effects on plants. In particular, JRF11 significantly increased the root biomass and soluble sugar content of plants. Furthermore, transcriptome analysis demonstrated that JRF11 treatment reprogrammed a variety of genes involved in plant mitogen-activated protein kinase (MAPK) signaling and starch and sucrose metabolism pathways through Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis. Our research indicates that beneficial endophytic fungi are able to interact with plants and exhibit outstanding plant growth-promoting activities.
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Affiliation(s)
- Jie Shan
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, China
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China
| | - Fangren Peng
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China
| | - Jinping Yu
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, China
| | - Qi Li
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, China
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Li Y, Bi M, Sun S, Li G, Wang Q, Ying M, Li L, Yang X. Comparative metabolomic profiling reveals molecular mechanisms underlying growth promotion and disease resistance in wheat conferred by Piriformospora indica in the field. Plant Signal Behav 2023; 18:2213934. [PMID: 37231769 DOI: 10.1080/15592324.2023.2213934] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Piriformospora indica, a plant root-colonizing basidiomycete fungus, exhibits strong growth-promoting activity in symbiosis with a broad range of plants. Here, we report the potential of P. indica to improve growth, yield, and disease resistance in wheat in the field. In the present study, P. indica successfully colonized wheat through chlamydospores and formed dense mycelial networks that covered roots. Plants subjected to the seed soaking (SS) treatment with P. indica chlamydospore suspensions enhanced tillering 2.28-fold compared to the non-inoculated wheat in the tillering stage. In addition, P. indica colonization promoted vegetative growth significantly during the three-leaf, tillering, and jointing stages. Moreover, the P. indica-SS-treatment enhanced wheat yield by 16.37 ± 1.63%, by increasing grains per ear and panicle weight and decreased damage to wheat shoot and root architecture markedly, with high field control effects against Fusarium pseudograminearum (81.59 ± 1.32%), Bipolaris sorokiniana (82.19 ± 1.59%), and Rhizoctonia cerealis (75.98 ± 1.36%). Most of the primary metabolites, such as amino acids, nucleotides, and lipids, involved in vegetative reproduction were increased in P. indica-SS-treatment plants, whereas secondary metabolites, such as terpenoids, polyketides, and alkaloids, decreased following P. indica inoculation. The up-regulated processes of protein, carbohydrate, and lipid metabolism indicated that P. indica colonization increased growth, yield, and disease resistance via the acceleration of plant primary metabolism. In conclusion, P. indica improved morphological, physiological, and metabolic substance levels, and further promoted its growth, yield, and disease resistance in wheat.
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Affiliation(s)
- Yuejiao Li
- Institute of Plant Protection, Tianjin Academy of Agricultural Sciences, Tianjin, China
| | - Meiying Bi
- Tianjin Key Laboratory of Drug Targeting and Bioimaging, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, China
| | - Shuqin Sun
- Institute of Plant Protection, Tianjin Academy of Agricultural Sciences, Tianjin, China
| | - Guangsheng Li
- Institute of Plant Protection, Tianjin Academy of Agricultural Sciences, Tianjin, China
| | - Qian Wang
- Institute of Plant Protection, Tianjin Academy of Agricultural Sciences, Tianjin, China
| | - Ming Ying
- Tianjin Key Laboratory of Drug Targeting and Bioimaging, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, China
| | - Liang Li
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Xiurong Yang
- Institute of Plant Protection, Tianjin Academy of Agricultural Sciences, Tianjin, China
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Li Y, Zhang X, He K, Song X, Yu J, Guo Z, Xu M. Isolation and Identification of Bacillus subtilis LY-1 and Its Antifungal and Growth-Promoting Effects. Plants (Basel) 2023; 12:4158. [PMID: 38140485 PMCID: PMC10747398 DOI: 10.3390/plants12244158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/29/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023]
Abstract
Peanut root rot, caused by Fusarium spp., is a devastating fungal disease. As part of a program to obtain a biocontrol agent to control peanut root rot in the field, a bacterial strain LY-1 capable of inhibiting the growth of the fungus in vitro was isolated from rhizosphere soil samples collected from wild mint by agar disk dilution and dual-culture assay. Strain LY-1 was identified as Bacillus subtilis based on morphological characteristics, 16S rDNA, and gyrA sequence analyses. The bacterial suspension and cell-free culture filtrate of LY-1 could significantly inhibit the growth of Fusarium oxysporum, Fusarium proliferatum and Fusarium solani, but volatile organic compounds from the cultures had only a weak effect on mycelial growth. The percentage inhibition of 20% concentration of the cell-free culture filtrate of LY-1 on conidium production of each of the three Fusarium species was greater than 72.38%, and the percentage inhibition by the culture filtration on the germination of conidia of the three species was at least 62.37%. The production of extracellular enzyme activity by LY-1 was studied in functional assays, showing protease, cellulase, amylase, chitinase, and β-1,3-glucanase activity, while LY-1 contained a gene encoding iturin, an antifungal lipopeptide. In addition, under pot culture in a greenhouse, culture filtrate of LY-1 significantly promoted the growth of peanut, increasing the fresh and dry mass of the plant by 30.77% and 27.27%, respectively, in comparison with the no-filtrate control. The culture filtrate of LY-1 increased the resistance of peanut plants to F. oxysporum, with the biocontrol efficiency reaching 44.71%. In conclusion, B. subtilis LY-1, a plant-growth-promoting rhizobacterium, was able to protect peanuts from Fusarium spp. infection.
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Affiliation(s)
- Ying Li
- Shandong Peanut Research Institute, Qingdao 266100, China; (Y.L.); (X.Z.); (K.H.); (X.S.); (J.Y.); (Z.G.)
- National Engineering Research Center for Peanut, Qingdao 266100, China
| | - Xia Zhang
- Shandong Peanut Research Institute, Qingdao 266100, China; (Y.L.); (X.Z.); (K.H.); (X.S.); (J.Y.); (Z.G.)
- National Engineering Research Center for Peanut, Qingdao 266100, China
| | - Kang He
- Shandong Peanut Research Institute, Qingdao 266100, China; (Y.L.); (X.Z.); (K.H.); (X.S.); (J.Y.); (Z.G.)
- National Engineering Research Center for Peanut, Qingdao 266100, China
| | - Xinying Song
- Shandong Peanut Research Institute, Qingdao 266100, China; (Y.L.); (X.Z.); (K.H.); (X.S.); (J.Y.); (Z.G.)
- National Engineering Research Center for Peanut, Qingdao 266100, China
| | - Jing Yu
- Shandong Peanut Research Institute, Qingdao 266100, China; (Y.L.); (X.Z.); (K.H.); (X.S.); (J.Y.); (Z.G.)
- National Engineering Research Center for Peanut, Qingdao 266100, China
| | - Zhiqing Guo
- Shandong Peanut Research Institute, Qingdao 266100, China; (Y.L.); (X.Z.); (K.H.); (X.S.); (J.Y.); (Z.G.)
- National Engineering Research Center for Peanut, Qingdao 266100, China
| | - Manlin Xu
- Shandong Peanut Research Institute, Qingdao 266100, China; (Y.L.); (X.Z.); (K.H.); (X.S.); (J.Y.); (Z.G.)
- National Engineering Research Center for Peanut, Qingdao 266100, China
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Wei H, He W, Li Z, Ge L, Zhang J, Liu T. Salt-tolerant endophytic bacterium Enterobacter ludwigii B30 enhance bermudagrass growth under salt stress by modulating plant physiology and changing rhizosphere and root bacterial community. Front Plant Sci 2022; 13:959427. [PMID: 35982708 PMCID: PMC9380843 DOI: 10.3389/fpls.2022.959427] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
Osmotic and ionic induced salt stress suppresses plant growth. In a previous study, Enterobacter ludwigii B30, isolated from Paspalum vaginatum, improved seed germination, root length, and seedling length of bermudagrass (Cynodon dactylon) under salt stress. In this study, E. ludwigii B30 application improved fresh weight and dry weight, carotenoid and chlorophyll levels, catalase and superoxide dismutase activities, indole acetic acid content and K+ concentration. Without E. ludwigii B30 treatment, bermudagrass under salt stress decreased malondialdehyde and proline content, Y(NO) and Y(NPQ), Na+ concentration, 1-aminocyclopropane-1-carboxylate, and abscisic acid content. After E. ludwigii B30 inoculation, bacterial community richness and diversity in the rhizosphere increased compared with the rhizosphere adjacent to roots under salt stress. Turf quality and carotenoid content were positively correlated with the incidence of the phyla Chloroflexi and Fibrobacteres in rhizosphere soil, and indole acetic acid (IAA) level was positively correlated with the phyla Actinobacteria and Chloroflexi in the roots. Our results suggest that E. ludwigii B30 can improve the ability of bermudagrass to accumulate biomass, adjust osmosis, improve photosynthetic efficiency and selectively absorb ions for reducing salt stress-induced injury, while changing the bacterial community structure of the rhizosphere and bermudagrass roots. They also provide a foundation for understanding how the bermudagrass rhizosphere and root microorganisms respond to endophyte inoculation.
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Affiliation(s)
- Hongjian Wei
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Grassland Science, South China Agricultural University, Guangzhou, China
| | - Wenyuan He
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Ziji Li
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Grassland Science, South China Agricultural University, Guangzhou, China
| | - Liangfa Ge
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Grassland Science, South China Agricultural University, Guangzhou, China
| | - Juming Zhang
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Grassland Science, South China Agricultural University, Guangzhou, China
| | - Tianzeng Liu
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Grassland Science, South China Agricultural University, Guangzhou, China
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Zhuang J, Liu C, Wang X, Xu T, Yang H. Penicillium simplicissimum NL-Z1 Induced an Imposed Effect to Promote the Leguminous Plant Growth. Front Microbiol 2021; 12:738734. [PMID: 34650540 PMCID: PMC8506219 DOI: 10.3389/fmicb.2021.738734] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 08/30/2021] [Indexed: 11/13/2022] Open
Abstract
It is found effective for phytoremediation of the guest soil spraying method by adding microbes to promote the growth of arbor leguminous plant on a high and steep rock slope. However, its underlying mechanisms remain elusive. Here, some experiments were conducted to explore the multifunctions of Penicillium simplicissimum NL-Z1 on rock weathering, nodule growth, and beneficial microbial regulation. The results show that P. simplicissimum NL-Z1 significantly increased the release of phosphorus, potassium, calcium, and magnesium from the rock by 226, 29, 24, and 95%, respectively, compared with that of the control. A significant increase of 153% in Indigofera pseudotinctoria Matsum nodule biomass, accompanied by an increase of 37% in the leguminous plant biomass was observed in the P. simplicissimum NL-Z1 treatment than in the control treatment. Interestingly, even though P. simplicissimum NL-Z1 itself became a minor microbial community in the soil, it induced a significant increase in Mortierella, which, as a beneficial microbe, can promote phosphate-solubilizing and plant growth. The results suggest that P. simplicissimum NL-Z1 could induce an imposed effect to promote leguminous plant growth, which may be conducive to the development of the phytoremediation technique for high and steep rock slope. The study provides a novel thought of using the indirect effect of microbes, i.e., promoting other beneficial microbes, to improve soil environment.
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Affiliation(s)
- Jiayao Zhuang
- Collaborative Innovation Center of Sustainable Forestry in Southern China of Jiangsu Province, Nanjing Forestry University, Nanjing, China
| | - Chao Liu
- Collaborative Innovation Center of Sustainable Forestry in Southern China of Jiangsu Province, Nanjing Forestry University, Nanjing, China
| | - Xiaoxue Wang
- Collaborative Innovation Center of Sustainable Forestry in Southern China of Jiangsu Province, Nanjing Forestry University, Nanjing, China
| | - Tongxin Xu
- Collaborative Innovation Center of Sustainable Forestry in Southern China of Jiangsu Province, Nanjing Forestry University, Nanjing, China
| | - Hao Yang
- Collaborative Innovation Center of Sustainable Forestry in Southern China of Jiangsu Province, Nanjing Forestry University, Nanjing, China
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Xu W, Xu L, Deng X, Goodwin PH, Xia M, Zhang J, Wang Q, Sun R, Pan Y, Wu C, Yang L. Biological Control of Take-All and Growth Promotion in Wheat by Pseudomonas chlororaphis YB-10. Pathogens 2021; 10:pathogens10070903. [PMID: 34358053 PMCID: PMC8308743 DOI: 10.3390/pathogens10070903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 07/07/2021] [Accepted: 07/13/2021] [Indexed: 11/18/2022] Open
Abstract
Wheat is a worldwide staple food crop, and take-all caused by Gaeumannomyces graminis var. tritici can lead to a tremendous decrease in wheat yield and quality. In this study, strain YB-10 was isolated from wheat rhizospheric soil and identified as Pseudomonas chlororaphis by morphology and 16S rRNA gene sequencing. Pseudomonas chlororaphis YB-10 had extracellular protease and cellulase activities and strongly inhibited the mycelium growth of Gaeumannomyces graminis var. tritici in dual cultures. Up to 87% efficacy of Pseudomonas chlororaphis YB-10 in controlling the take-all of seedlings was observed in pot experiments when wheat seed was coated with the bacterium. Pseudomonas chlororaphis YB-10 was also positive for indole acetic acid (IAA) and siderophore production, and coating wheat seed with the bacterium significantly promoted the growth of seedlings at 107 and 108 CFU/mL. Furthermore, treatment with Pseudomonas chlororaphis YB-10 increased activities of the wheat defense-related enzymes POD, SOD, CAT, PAL and PPO in seedlings, indicating induced resistance against pathogens. Overall, Pseudomonas chlororaphis YB-10 is a promising new seed-coating agent to both promote wheat growth and suppress take-all.
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Affiliation(s)
- Wen Xu
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (W.X.); (X.D.); (M.X.); (J.Z.); (R.S.); (Y.P.); (C.W.)
- Henan International Joint Laboratory of Crop Protection, Henan Biopesticide Engineering Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Lingling Xu
- Department of Plant Pathology, College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, China;
| | - Xiaoxu Deng
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (W.X.); (X.D.); (M.X.); (J.Z.); (R.S.); (Y.P.); (C.W.)
- Henan International Joint Laboratory of Crop Protection, Henan Biopesticide Engineering Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Paul H. Goodwin
- School of Environmental Sciences, University of Guelph, Guelph, ON N1G2W1, Canada;
| | - Mingcong Xia
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (W.X.); (X.D.); (M.X.); (J.Z.); (R.S.); (Y.P.); (C.W.)
- Henan International Joint Laboratory of Crop Protection, Henan Biopesticide Engineering Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Jie Zhang
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (W.X.); (X.D.); (M.X.); (J.Z.); (R.S.); (Y.P.); (C.W.)
- Henan International Joint Laboratory of Crop Protection, Henan Biopesticide Engineering Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Qi Wang
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100083, China;
| | - Runhong Sun
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (W.X.); (X.D.); (M.X.); (J.Z.); (R.S.); (Y.P.); (C.W.)
- Henan International Joint Laboratory of Crop Protection, Henan Biopesticide Engineering Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Yamei Pan
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (W.X.); (X.D.); (M.X.); (J.Z.); (R.S.); (Y.P.); (C.W.)
- Henan International Joint Laboratory of Crop Protection, Henan Biopesticide Engineering Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Chao Wu
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (W.X.); (X.D.); (M.X.); (J.Z.); (R.S.); (Y.P.); (C.W.)
- Henan International Joint Laboratory of Crop Protection, Henan Biopesticide Engineering Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Lirong Yang
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (W.X.); (X.D.); (M.X.); (J.Z.); (R.S.); (Y.P.); (C.W.)
- Henan International Joint Laboratory of Crop Protection, Henan Biopesticide Engineering Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
- Correspondence:
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Low CX, Tan LTH, Ab Mutalib NS, Pusparajah P, Goh BH, Chan KG, Letchumanan V, Lee LH. Unveiling the Impact of Antibiotics and Alternative Methods for Animal Husbandry: A Review. Antibiotics (Basel) 2021; 10:578. [PMID: 34068272 PMCID: PMC8153128 DOI: 10.3390/antibiotics10050578] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 05/07/2021] [Accepted: 05/09/2021] [Indexed: 02/07/2023] Open
Abstract
Since the 1950s, antibiotics have been used in the field of animal husbandry for growth promotion, therapy and disease prophylaxis. It is estimated that up to 80% of the antibiotics produced by the pharmaceutical industries are used in food production. Most of the antibiotics are used as feed additives at sub-therapeutic levels to promote growth. However, studies show the indiscriminate use of antibiotics has led to the emergence of multidrug-resistant pathogens that threaten both animal health and human health, including vancomycin-resistant Enterococcus (VRE), Methicillin-resistant Staphylococcus aureus (MRSA) and carbapenem-resistant Enterobacteriaceae (CRE). This scenario is further complicated by the slow progress in achieving scientific breakthroughs in uncovering novel antibiotics following the 1960s. Most of the pharmaceutical industries have long diverted research funds away from the field of antibiotic discovery to more lucrative areas of drug development. If this situation is allowed to continue, humans will return to the pre-antibiotics era and potentially succumb to huge health and economic consequences. Fortunately, studies investigating various alternatives to antibiotics use in livestock show promising results. These alternatives include the application of bacteriophages and phage derived peptidoglycan degrading enzymes, engineered peptides, egg yolk antibodies, probiotics, prebiotics and synbiotics, as well as quorum quenching molecules. Therefore, this review aims to discuss the use of growth-promoting antibiotics and their impact on livestock and provide insights on the alternative approaches for animal husbandry.
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Affiliation(s)
- Chuen Xian Low
- Novel Bacteria and Drug Discovery (NBDD) Research Group, Microbiome and Bioresource Research Strength (MBRS), Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor Darul Ehsan 47500, Malaysia; (C.X.L.); (L.T.-H.T.); (N.-S.A.M.); (P.P.)
| | - Loh Teng-Hern Tan
- Novel Bacteria and Drug Discovery (NBDD) Research Group, Microbiome and Bioresource Research Strength (MBRS), Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor Darul Ehsan 47500, Malaysia; (C.X.L.); (L.T.-H.T.); (N.-S.A.M.); (P.P.)
- Clinical School Johor Bahru, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Johor Bahru 80100, Malaysia
| | - Nurul-Syakima Ab Mutalib
- Novel Bacteria and Drug Discovery (NBDD) Research Group, Microbiome and Bioresource Research Strength (MBRS), Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor Darul Ehsan 47500, Malaysia; (C.X.L.); (L.T.-H.T.); (N.-S.A.M.); (P.P.)
- UKM Medical Molecular Biology Institute (UMBI), UKM Medical Centre, Universiti Kebangsaan Malaysia, Kuala Lumpur 50603, Malaysia
| | - Priyia Pusparajah
- Novel Bacteria and Drug Discovery (NBDD) Research Group, Microbiome and Bioresource Research Strength (MBRS), Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor Darul Ehsan 47500, Malaysia; (C.X.L.); (L.T.-H.T.); (N.-S.A.M.); (P.P.)
| | - Bey-Hing Goh
- Biofunctional Molecule Exploratory Research Group (BMEX), School of Pharmacy, Monash University Malaysia, Selangor Darul Ehsan 47500, Malaysia;
- College of Pharmaceutical Sciences, Zhenjiang University, Hangzhou 310058, China
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
- International Genome Centre, Jiangsu University, Zhenjiang 212013, China
| | - Vengadesh Letchumanan
- Novel Bacteria and Drug Discovery (NBDD) Research Group, Microbiome and Bioresource Research Strength (MBRS), Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor Darul Ehsan 47500, Malaysia; (C.X.L.); (L.T.-H.T.); (N.-S.A.M.); (P.P.)
| | - Learn-Han Lee
- Novel Bacteria and Drug Discovery (NBDD) Research Group, Microbiome and Bioresource Research Strength (MBRS), Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor Darul Ehsan 47500, Malaysia; (C.X.L.); (L.T.-H.T.); (N.-S.A.M.); (P.P.)
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Qin L, Tian P, Cui Q, Hu S, Jian W, Xie C, Yang X, Shen H. Bacillus circulans GN03 Alters the Microbiota, Promotes Cotton Seedling Growth and Disease Resistance, and Increases the Expression of Phytohormone Synthesis and Disease Resistance-Related Genes. Front Plant Sci 2021; 12:644597. [PMID: 33936131 PMCID: PMC8079787 DOI: 10.3389/fpls.2021.644597] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 03/23/2021] [Indexed: 05/13/2023]
Abstract
Plant growth-promoting bacteria (PGPB) are components of the plant rhizosphere that promote plant growth and/or inhibit pathogen activity. To explore the cotton seedlings response to Bacillus circulans GN03 with high efficiency of plant growth promotion and disease resistance, a pot experiment was carried out, in which inoculations levels of GN03 were set at 104 and 108 cfu⋅mL-1. The results showed that GN03 inoculation remarkably enhanced growth promotion as well as disease resistance of cotton seedlings. GN03 inoculation altered the microbiota in and around the plant roots, led to a significant accumulation of growth-related hormones (indole acetic acid, gibberellic acid, and brassinosteroid) and disease resistance-related hormones (salicylic acid and jasmonic acid) in cotton seedlings, as determined with ELISA, up-regulated the expression of phytohormone synthesis-related genes (EDS1, AOC1, BES1, and GA20ox), auxin transporter gene (Aux1), and disease-resistance genes (NPR1 and PR1). Comparative genomic analyses was performed between GN03 and four similar species, with regards to phenotype, biochemical characteristics, and gene function. This study provides valuable information for applying the PGPB alternative, GN03, as a plant growth and disease-resistance promoting fertilizer.
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Affiliation(s)
- Lijun Qin
- College of Life Sciences, Chongqing Normal University, Chongqing, China
- Biological Science Research Center, Southwest University, Chongqing, China
| | - Peidong Tian
- College of Life Sciences, Chongqing Normal University, Chongqing, China
| | - Qunyao Cui
- College of Life Sciences, Chongqing Normal University, Chongqing, China
| | - Shuping Hu
- College of Life Sciences, Chongqing Normal University, Chongqing, China
| | - Wei Jian
- College of Life Sciences, Chongqing Normal University, Chongqing, China
| | - Chengjian Xie
- College of Life Sciences, Chongqing Normal University, Chongqing, China
| | - Xingyong Yang
- College of Life Sciences, Chongqing Normal University, Chongqing, China
- *Correspondence: Xingyong Yang,
| | - Hong Shen
- Biological Science Research Center, Southwest University, Chongqing, China
- College of Resources and Environment Science, Southwest University, Chongqing, China
- Hong Shen,
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Chen HM, Wu HX, He XY, Zhang HH, Miao F, Liang ZS. [Promoting tanshinone synthesis of Salvia miltiorrhiza root by a seed endophytic fungus, Phoma herbarum D603]. Zhongguo Zhong Yao Za Zhi 2020; 45:65-71. [PMID: 32237412 DOI: 10.19540/j.cnki.cjcmm.20191113.101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The interaction of endophytes and host plant is an effective mean to regulate the growth and secondary metabolism of medicinal plants. Here we want to elucidate the effects and mechanism of Phoma herbarum D603 on the root development and tanshinone synthesis in root of Salvia miltiorrhiza by endophyte-plant coculture system. The mycelium of P. herbarum D603 was colonized in the root tissue space, and formed a stable symbiotic relationship with host plant. The in vitro activities analysis showed that the concentration of IAA produced by D603 can reach(6.45±0.23) μg·mL~(-1), and this strain had some abilities of phosphorus solubilization and siderophore production activities. The coculture experiment showed that strain D603 can significantly promote the synthesis and accumulation of tanshinones in the root of S. miltiorrhiza, in which after 8 weeks of treatment with D603, the content of tanshinone Ⅱ_A in the roots reached up to(1.42±0.59) mg·g~(-1). By the qRT-PCR analysis results, we found that D603 could improve the expression levels of some key genes(DXR, DXS, GGPP, HMGR, CPS) of tanshinone biosynthesis pathway in host plant S. miltiorrhiza, but the promoting effect mainly occurred in the early stage of the interaction, and the enzyme activity level decreased in varying degrees of the later stage. In summary, seed-associated endophyte P. herbarum D603 can promote the growth and root development of S. miltiorrhiza by producing hormones, promoting nutrient absorption and siderophore production, and promote the synthesis and accumulation of tanshinones by regulating the expression level of key genes in the synthetic pathway in S. miltiorrhiza.
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Affiliation(s)
- Hai-Min Chen
- College of Life Sciences, Northwest A&F University Yangling 712100, China Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University Hangzhou 310018, China
| | - Hong-Xia Wu
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University Hangzhou 310018, China
| | - Xiao-Yi He
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University Hangzhou 310018, China
| | - Hai-Hua Zhang
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University Hangzhou 310018, China
| | - Fang Miao
- College of Life Sciences, Northwest A&F University Yangling 712100, China
| | - Zong-Suo Liang
- College of Life Sciences, Northwest A&F University Yangling 712100, China Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University Hangzhou 310018, China
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Jochum MD, McWilliams KL, Borrego EJ, Kolomiets MV, Niu G, Pierson EA, Jo YK. Bioprospecting Plant Growth-Promoting Rhizobacteria That Mitigate Drought Stress in Grasses. Front Microbiol 2019; 10:2106. [PMID: 31552009 PMCID: PMC6747002 DOI: 10.3389/fmicb.2019.02106] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 08/27/2019] [Indexed: 11/13/2022] Open
Abstract
This study reports the application of a novel bioprospecting procedure designed to screen plant growth-promoting rhizobacteria (PGPR) capable of rapidly colonizing the rhizosphere and mitigating drought stress in multiple hosts. Two PGPR strains were isolated by this bioprospecting screening assay and identified as Bacillus sp. (12D6) and Enterobacter sp. (16i). When inoculated into the rhizospheres of wheat (Triticum aestivum) and maize (Zea mays) seedlings, these PGPR resulted in delays in the onset of plant drought symptoms. The plant phenotype responding to drought stress was associated with alterations in root system architecture. In wheat, both PGPR isolates significantly increased root branching, and Bacillus sp. (12D6), in particular, increased root length, when compared to the control. In maize, both PGPR isolates significantly increased root length, root surface area and number of tips when compared to the control. Enterobacter sp. (16i) exhibited greater effects in root length, diameter and branching when compared to Bacillus sp. (12D6) or the control. In vitro phytohormone profiling of PGPR pellets and filtrates using LC/MS demonstrated that both PGPR strains produced and excreted indole-3-acetic acid (IAA) and salicylic acid (SA) when compared to other phytohormones. The positive effects of PGPR inoculation occurred concurrently with the onset of water deficit, demonstrating the potential of the PGPR identified from this bioprospecting pipeline for use in crop production systems under drought stress.
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Affiliation(s)
- Michael D. Jochum
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, United States
| | - Kelsey L. McWilliams
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, United States
| | - Eli J. Borrego
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, United States
- Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, Rochester, NY, United States
| | - Mike V. Kolomiets
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, United States
| | - Genhua Niu
- Texas A&M AgriLife Research and Extension Center, El Paso, TX, United States
| | - Elizabeth A. Pierson
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, United States
- Department of Horticultural Sciences, Texas A&M University, College Station, TX, United States
| | - Young-Ki Jo
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, United States
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