1
|
Zheng L, Han Z, Wang S, Gao A, Liu L, Pan H, Zhang H. Transcriptomic analysis and knockout experiments reveal the role of suhB in the biocontrol effects of Pantoea jilinensis D25 on Botrytis cinerea. Sci Total Environ 2024; 919:170771. [PMID: 38336045 DOI: 10.1016/j.scitotenv.2024.170771] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/01/2024] [Accepted: 02/04/2024] [Indexed: 02/12/2024]
Abstract
Tomato gray mold, caused by Botrytis cinerea, is an important disease in tomato. Pantoea jilinensis D25, isolated form tomato rhizosphere soil, can prevent B. cinerea infection in tomato. To determine the underlying biocontrol mechanism, the transcriptome of P. jilinensis D25 was assessed. Differential expression analysis revealed that 941 genes were upregulated and 997 genes were downregulated. Through transcriptome analysis, the suhB gene was knocked out. ΔPj-suhB exhibited lower swimming motility and colonization abilities than strain D25. After 4 days of co-cultivation, ΔPj-suhB could reduce the colony diameter, mycelial weight, and spore production of B. cinerea with the inhibitory rates of 31.72 %, 39.62 %, and 47.42 %, respectively, compared with control. However, the inhibitory rates of strain D25 were 52.91 %, 60.09 %, and 76.85 %, respectively, compared with control. Strain D25 could significantly downregulate pathogenesis-related genes in B. cinerea, whereas the expression level of these genes in B. cinerea was higher after treatment with ΔPj-suhB than after that with strain D25. In vitro experiments revealed that the lesion area and disease control efficacy were 1.520 and 0.038 cm2 and 68.7 % and 99.0 %, respectively, after ΔPj-suhB and strain D25 treatments. Pot experiments revealed that ΔPj-suhB and strain D25 could prevent tomato plants from B. cinerea infection with the disease reduction rate of 37.5 % and 75.0 %, respectively. Though the activities of defense-related enzymes and expression level of defense related genes in tomato plants were increased under ΔPj-suhB treatment, these effects were higher after strain D25 treatment. Thus, these results demonstrated that suhB was the key gene in strain D25 underlying its biocontrol effect and mobility.
Collapse
Affiliation(s)
- Lining Zheng
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, PR China
| | - Zhe Han
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, PR China
| | - Shengyi Wang
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, PR China
| | - Ao Gao
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, PR China
| | - Ling Liu
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, PR China
| | - Hongyu Pan
- College of Plant Sciences, Jilin University, Changchun 130062, PR China
| | - Hao Zhang
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, PR China.
| |
Collapse
|
2
|
Nimma IR, Brahmbhatt P, Nimma S, Stancampiano F. Pantoea agglomerans bacteraemia after uterine artery embolisation: an unusual pathogen. BMJ Case Rep 2024; 17:e258345. [PMID: 38442980 PMCID: PMC10916084 DOI: 10.1136/bcr-2023-258345] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024] Open
Abstract
A woman in her 40s presented to the emergency department (ED) with a 3-week history of nausea, vomiting and diarrhoea. Blood cultures were positive for Serratia and Pantoea agglomerans spp. One month before her ED visit, she underwent targeted uterine artery embolisation with particles by an interventional radiologist. Uterine artery embolisation is considered a safe alternative to surgical removal of fibroids or hysterectomy. The patient was initially treated with targeted antibiotics for a large infected uterine fibroid but ultimately required a hysterectomy for source control. To our knowledge, this is the first documented case of P. agglomerans infecting a uterine fibroid.
Collapse
Affiliation(s)
- Induja Reddy Nimma
- Internal Medicine, Mayo Clinic Jacksonville Campus, Jacksonville, Florida, USA
| | - Pavan Brahmbhatt
- Radiology, Mayo Clinic Jacksonville Campus, Jacksonville, Florida, USA
| | - Sindhuja Nimma
- Anesthesiology, Mayo Clinic Jacksonville Campus, Jacksonville, Florida, USA
| | | |
Collapse
|
3
|
Campestre MP, Antonelli CJ, Castagno NL, Maguire VG, Ruiz OA. Interspecific hybridization and inoculation with Pantoea eucalypti improve forage performance of Lotus crop species under alkaline stress. Plant Biol (Stuttg) 2024; 26:245-256. [PMID: 38196283 DOI: 10.1111/plb.13614] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 11/14/2023] [Indexed: 01/11/2024]
Abstract
This study was designed to elucidate the physiological responses of three Lotus forage accessions to alkaline stress, and the influence of inoculating with Pantoea eucalypti endophyte strain on alkaline stress mitigation. A diploid L. corniculatus (Lc) accession, L. tenuis (Lt), and the interspecific hybrid Lt × Lc obtained from these two parental lines were exposed to alkaline stress (pH 8.2). Both Lt and the Lt × Lc hybrid are alkaline-tolerant compared to Lc, based on observations that dry mass was not reduced under stress, and there were no chlorosis symptoms on leaf blades. In all three Lotus accessions, Fe2+ concentration under stress decreased in aerial parts and simultaneously increased in roots. Inoculation with P. eucalypti considerably increased Fe2+ content in shoots of all three Lotus forage species under alkaline treatment. Photochemical efficiency of PSII was affected in Lc accession only when exposed to alkaline treatment. However, when cultivated under alkalinity with inoculation, plants recovered and had photosynthetic parameters equivalent to those in the control treatment. Together, the results highlight the importance of inoculation with P. eucalypti, which contributes significantly to mitigating alkaline stress. All results provide useful information for improving alkaline tolerance traits of Lotus forage species and their interspecific hybrids.
Collapse
Affiliation(s)
- M P Campestre
- Laboratorio de Estrés Biótico y Abiótico en Plantas, Chascomús, Argentina
| | - C J Antonelli
- Laboratorio de Estrés Biótico y Abiótico en Plantas, Chascomús, Argentina
| | - N L Castagno
- Laboratorio de Interacciones Planta-Microorganismo, Instituto Tecnológico de Chascomús (CONICET-UNSAM), Escuela de Bio y Nanotecnologías (UNSAM), Chascomús, Argentina
| | - V G Maguire
- Laboratorio de Estrés Biótico y Abiótico en Plantas, Chascomús, Argentina
| | - O A Ruiz
- Laboratorio de Estrés Biótico y Abiótico en Plantas, Chascomús, Argentina
| |
Collapse
|
4
|
Hassan D, Saleem N, Haneef M, Khan M, Aziz M, Usman M. Pantoea agglomerans: A rare infectious outbreak affecting maintenance hemodialysis patients in a tertiary care hospital. Semin Dial 2024; 37:172-177. [PMID: 37779418 DOI: 10.1111/sdi.13182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 09/08/2023] [Accepted: 09/15/2023] [Indexed: 10/03/2023]
Abstract
BACKGROUND Pantoea agglomerans is an environmental pathogen known to cause infection in immunocompromised individuals, particularly after thorn injuries. However, previous data showed few cases of human disease caused by contaminated medical products such as parenteral nutrition, anesthetic agents, blood, and peritoneal dialysis solutions. Infection in hemodialysis patients is rare. In this study, we presented a detailed account of several hemodialysis patients infected with this contagious pathogen and compared them with noninfected dialysis patients. METHODS We retrospectively reviewed the hospital records of 105 hemodialysis patients. Seventeen of 105 patients were diagnosed with P. agglomerans infection. We carefully analyzed their entire in-hospital course. RESULTS Among infected patients, 52.9% were male with a median age of 49 (IQR: 32-66) years. Compared to the noninfected patients, age below 50 years, prior kidney transplantation, prior immunosuppression and antibiotics use, and dialysis via a tunneled vascular catheter were the significant epidemiological features. Despite negative microbiological investigations, we suspect the possible infectious spread via infected central venous catheter was the likely infectious source. Most importantly, all patients responded well to intravenous antibiotics. Only two patients required the removal of the tunneled catheter. Their mortality rate was 0%. CONCLUSION P. agglomerans infection, although considered rare, is becoming increasingly prevalent among dialysis patients. Its occurrence must be appraised as an infectious outbreak rather than mere contamination. Prompt treatment, source identification, and early implementation of preventive strategies should always be the goal to curtail this infection at an early stage.
Collapse
Affiliation(s)
- Danyal Hassan
- Department of Renal Medicine, Shifa International Hospital, Islamabad, Pakistan
| | - Nida Saleem
- Department of Renal Medicine, Shifa International Hospital, Islamabad, Pakistan
- Department of Renal and Transplantation Medicine, Westmead Hospital, Sydney, New South Wales, Australia
- College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia
- Centre for Kidney Research, Kids Research Institute, The Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Muhammad Haneef
- Department of Renal Medicine, Shifa International Hospital, Islamabad, Pakistan
| | - Merina Khan
- Department of Renal Medicine, Shifa International Hospital, Islamabad, Pakistan
| | - Maliha Aziz
- Shifa Clinical Research Centre, Shifa International Hospital, Islamabad, Pakistan
| | - Muhammad Usman
- Department of Microbiology, Shifa International Hospital, Islamabad, Pakistan
| |
Collapse
|
5
|
Tejerina MR, Cabana MJ, Enríquez PA, Benítez-Ahrendts MR, Fonseca MI. Bacterial Strains Isolated from Stingless Bee Workers Inhibit the Growth of Apis mellifera Pathogens. Curr Microbiol 2024; 81:106. [PMID: 38418777 DOI: 10.1007/s00284-024-03618-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 01/17/2024] [Indexed: 03/02/2024]
Abstract
Apis mellifera bees are an important resource for the local economy of various regions in Argentina and the maintenance of natural ecosystems. In recent years, different alternatives have been investigated to avoid the reduction or loss of colonies caused by pathogens and parasites such as Ascosphaera apis, Aspergillus flavus, and Paenibacillus larvae. We focused on bacterial strains isolated from the intestine of native stingless bees, to elucidate their antagonistic effect on diseases of A. mellifera colonies. For this purpose, worker bees of the species Tetragonisca fiebrigi, Plebeia spp., and Scaptotrigona jujuyensis were captured from the entrance to tree hives and transported to the laboratory, where their intestines were extracted. Twenty bacterial colonies were isolated from the intestines, and those capable of inhibiting enterobacteria in vitro and producing organic acids, proteases, and chitinases were selected. Four genera, Levilactobacillus, Acetobacter, Lactiplantibacillus, and Pantoea, were selected and identified by the molecular marker that codes for the 16S rRNA gene. For inhibition assays, cell suspensions and cell-free suspensions were performed. All treatments showed significant antibacterial effects, in comparison with the controls, against P. larvae and antifungal effects against A. apis and A. flavus. However, the mechanisms by which these bacteria inhibit the growth of these pathogens were not studied.
Collapse
Affiliation(s)
- Marcos Raúl Tejerina
- Cátedra de Microbiología, Sanidad Apícola y Meliponícola, Facultad de Ciencias Agrarias, Universidad Nacional de Jujuy, Alberdi 47, 4600, Jujuy, Argentina.
- Instituto de Ecorregiones Andinas (INECOA)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida Bolivia 1239, San Salvador de Jujuy, Jujuy, Argentina.
| | - María José Cabana
- Cátedra de Microbiología, Sanidad Apícola y Meliponícola, Facultad de Ciencias Agrarias, Universidad Nacional de Jujuy, Alberdi 47, 4600, Jujuy, Argentina
| | - Pablo Adrián Enríquez
- Cátedra de Microbiología, Sanidad Apícola y Meliponícola, Facultad de Ciencias Agrarias, Universidad Nacional de Jujuy, Alberdi 47, 4600, Jujuy, Argentina
| | - Marcelo Rafael Benítez-Ahrendts
- Cátedra de Microbiología, Sanidad Apícola y Meliponícola, Facultad de Ciencias Agrarias, Universidad Nacional de Jujuy, Alberdi 47, 4600, Jujuy, Argentina
- Instituto de Ecorregiones Andinas (INECOA)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida Bolivia 1239, San Salvador de Jujuy, Jujuy, Argentina
| | - María Isabel Fonseca
- Facultad de Ciencias Exactas, Químicas y Naturales. Instituto de Biotecnología "Dra. María Ebe Reca" (INBIOMIS), Laboratorio de Biotecnología Molecular, Universidad Nacional de Misiones, Misiones, Argentina
- CONICET, Buenos Aires, Argentina
| |
Collapse
|
6
|
Tuytschaevers S, Aden L, Greene Z, Nixon C, Shaw W, Hatch D, Kumar G, Miranda RR, Hudson AO. Isolation, whole-genome sequencing, and annotation of two antibiotic-producing and antibiotic-resistant bacteria, Pantoea rodasii RIT 836 and Pseudomonas endophytica RIT 838, collected from the environment. PLoS One 2024; 19:e0293943. [PMID: 38412159 PMCID: PMC10898753 DOI: 10.1371/journal.pone.0293943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 10/22/2023] [Indexed: 02/29/2024] Open
Abstract
Antimicrobial resistance (AMR) is a global threat to human health since infections caused by antimicrobial-resistant bacteria are life-threatening conditions with minimal treatment options. Bacteria become resistant when they develop the ability to overcome the compounds that are meant to kill them, i.e., antibiotics. The increasing number of resistant pathogens worldwide is contrasted by the slow progress in the discovery and production of new antibiotics. About 700,000 global deaths per year are estimated as a result of drug-resistant infections, which could escalate to nearly 10 million by 2050 if we fail to address the AMR challenge. In this study, we collected and isolated bacteria from the environment to screen for antibiotic resistance. We identified several bacteria that showed resistance to multiple clinically relevant antibiotics when tested in antibiotic susceptibility disk assays. We also found that two strains, identified as Pantoea rodasii RIT 836 and Pseudomonas endophytica RIT 838 via whole genome sequencing and annotation, produce bactericidal compounds against both Gram-positive and Gram-negative bacteria in disc-diffusion inhibitory assays. We mined the two strains' whole-genome sequences to gain more information and insights into the antibiotic resistance and production by these bacteria. Subsequently, we aim to isolate, identify, and further characterize the novel antibiotic compounds detected in our assays and bioinformatics analysis.
Collapse
Affiliation(s)
- Serena Tuytschaevers
- Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, Rochester, New York, United States of America
| | - Leila Aden
- Rochester Prep High School, Rochester, New York, United States of America
| | - Zacchaeus Greene
- Rochester Prep High School, Rochester, New York, United States of America
| | - Chanei Nixon
- Rochester Prep High School, Rochester, New York, United States of America
| | - Wade Shaw
- Rochester Prep High School, Rochester, New York, United States of America
| | - Dillan Hatch
- Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, Rochester, New York, United States of America
| | - Girish Kumar
- Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, Rochester, New York, United States of America
| | - Renata Rezende Miranda
- School of Chemistry and Materials Science, Rochester Institute of Technology, Rochester, New York, United States of America
| | - André O. Hudson
- Thomas H. Gosnell School of Life Sciences, Rochester Institute of Technology, Rochester, New York, United States of America
| |
Collapse
|
7
|
Ibrahim N, Nesbitt D, Guo Q(T, Lin J, Svircev A, Wang Q, Weadge JT, Anany H. Improved Viability of Spray-Dried Pantoea agglomerans for Phage-Carrier Mediated Control of Fire Blight. Viruses 2024; 16:257. [PMID: 38400033 PMCID: PMC10893313 DOI: 10.3390/v16020257] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 01/26/2024] [Accepted: 01/30/2024] [Indexed: 02/25/2024] Open
Abstract
Fire blight, caused by Erwinia amylovora, is a devastating bacterial disease that threatens apple and pear production. It is mainly controlled by using antibiotics, such as streptomycin. Due to development of E. amylovora resistant strains and the excessive agricultural use of antibiotics, there is an increased awareness of the possibility of antibiotic resistance gene transfer to other microbes. Urgent development of biocontrol agents (BCAs) is needed that can be incorporated into integrated pest management programs as antibiotic alternatives. A novel phage-carrier system (PCS) that combines an antagonistic bacterium, Pantoea agglomerans, with its ability to act as a phage-carrier bacterium for Erwinia phages has been developed. The low viability of P. agglomerans cells following spray-drying (SD) has been a challenge for the industrial-scale production of this PCS. Here, an SD protocol was developed for P. agglomerans by modifying the growth medium and bacterial cell formulation using D(+)-trehalose and maltodextrin. The developed protocol is amenable to the industrial-scale production of the BCA/PCS. The P. agglomerans viability was greater than 90% after SD and had a shelf life at 4 °C of 4 months, and reconstituted cells showed a 3 log reduction in E. amylovora counts with a pear disc assay.
Collapse
Affiliation(s)
- Nassereldin Ibrahim
- Agriculture and Agri-Food Canada (AAFC), Guelph Research and Development Centre (GRDC), 93 Stone Rd W., Guelph, ON N1G 5C9, Canada; (N.I.); (Q.G.); (Q.W.)
- Department of Biology, Wilfrid Laurier University, Waterloo, ON N2L 3C5, Canada;
- Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City 32897, Egypt
| | - Darlene Nesbitt
- Agriculture and Agri-Food Canada (AAFC), Vineland Station, ON L0R 2E0, Canada; (D.N.); (A.S.)
| | - Qian (Tracy) Guo
- Agriculture and Agri-Food Canada (AAFC), Guelph Research and Development Centre (GRDC), 93 Stone Rd W., Guelph, ON N1G 5C9, Canada; (N.I.); (Q.G.); (Q.W.)
| | - Janet Lin
- National Microbiology Laboratory, National Health Agency, 110 Stone Rd. W., Guelph, ON N1G 3W4, Canada;
| | - Antonet Svircev
- Agriculture and Agri-Food Canada (AAFC), Vineland Station, ON L0R 2E0, Canada; (D.N.); (A.S.)
| | - Qi Wang
- Agriculture and Agri-Food Canada (AAFC), Guelph Research and Development Centre (GRDC), 93 Stone Rd W., Guelph, ON N1G 5C9, Canada; (N.I.); (Q.G.); (Q.W.)
| | - Joel T. Weadge
- Department of Biology, Wilfrid Laurier University, Waterloo, ON N2L 3C5, Canada;
| | - Hany Anany
- Agriculture and Agri-Food Canada (AAFC), Guelph Research and Development Centre (GRDC), 93 Stone Rd W., Guelph, ON N1G 5C9, Canada; (N.I.); (Q.G.); (Q.W.)
- Food Science Department, University of Guelph, Guelph, ON N1G 2W1, Canada
| |
Collapse
|
8
|
Suzuki N, Purba FY, Inagawa H, Hattori Y, Isobe N. Effects of oral administration of lipopolysaccharide derived from Pantoea agglomerans on innate immunity of mammary glands in dairy goats. Vet Immunol Immunopathol 2023; 265:110664. [PMID: 37918120 DOI: 10.1016/j.vetimm.2023.110664] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 11/04/2023]
Abstract
This study aimed to evaluate the effect of orally administered lipopolysaccharide (LPS) derived from Pantoea agglomerans (LPSpa) on innate immune functions, including the concentrations of antimicrobial components and interleukin (IL)-10 in goat milk, for the prevention of goat mastitis. Twelve Tokara goats were divided into two groups of six goats. Goats in the LPSpa and control groups were orally administrated with 0.4 g/kg dextrin with or without 0.02 mg/kg LPSpa for 7 days (day 0-6), respectively. After treatment (i.e., day 7), 1 μg LPS from Escherichia coli O111 (LPSec) was infused into one side of the udder in both groups to induce mastitis. Milk from all sides of the udder, saliva, and feces were collected on days 0 and 7. After LPSec infusion into the udders, milk was collected from the infused side of the udder on days 8, 10, and 12. Milk yields and somatic cell counts were recorded during the examination period. The concentrations of immunoglobulin (Ig) A in saliva, feces, and milk and the concentrations of lactoferrin, goat β defensin-1 (GBD1), S100A7, and IL-10 in milk were measured. After LPSpa oral administration, the concentrations of GBD-1 and IL-10 in the milk of the LPSpa group were significantly higher on day 7 than those in the control group, and the concentration of IgA in the feces tended to be higher than that in the control group. After LPSec intramammary infusion, S100A7 concentration on day 12 was significantly lower in the LPSpa group than in the control group. These findings suggest that the oral administration of LPSpa may prevent mastitis by increasing the concentration of GBD1 in milk.
Collapse
Affiliation(s)
- Naoki Suzuki
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8528, Japan
| | - Fika Yuliza Purba
- Veterinary Medicine Study Program, Faculty of Medicine, Hasanuddin University, Makassar 90245, Indonesia
| | - Hiroyuki Inagawa
- Control of Innate Immunity, Technology Research Association, Takamatsu, Kagawa 761-0301, Japan; Macrophi Inc., Takamatsu, Kagawa 761-0301, Japan
| | | | - Naoki Isobe
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8528, Japan.
| |
Collapse
|
9
|
Lee SI, Tran TD, Hnasko R, McGarvey JA. Use of Pantoea agglomerans ASB05 as a biocontrol agent to inhibit the growth of Salmonella enterica on intact cantaloupe melons. J Appl Microbiol 2023; 134:lxad235. [PMID: 37852677 DOI: 10.1093/jambio/lxad235] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 10/05/2023] [Accepted: 10/11/2023] [Indexed: 10/20/2023]
Abstract
AIMS To identify biocontrol agents to prevent the growth of Salmonella serotype Enterica on cantaloupe melons during the pre- and postharvest periods. METHODS AND RESULTS We created a produce-associated bacterial library containing 8736 isolates and screened it using an in-vitro fluorescence inhibition assay to identify bacteria that inhibit the growth of S. Enterica. One isolate, Pantoea agglomerans ASB05, was able to grow, persist, and inhibit the growth of S. Enterica on intact cantaloupe melons under simulated pre- and postharvest conditions. We also demonstrated that the growth inhibition of S. Enterica by P. agglomerans ASB05 was due to the production of a phenazine type antibiotic. CONCLUSIONS Pantoea agglomerans ASB05 is an effective biocontrol agent for the prevention of S. Enterica growth on intact cantaloupe melons in both the pre- and postharvest environments.
Collapse
Affiliation(s)
- Sang In Lee
- Foodborne Toxin Detection and Prevention Research Unit, USDA, ARS, Albany, CA 94710, United States
| | - Thao D Tran
- Foodborne Toxin Detection and Prevention Research Unit, USDA, ARS, Albany, CA 94710, United States
| | - Robert Hnasko
- Produce Safety and Microbiology Research Unit, USDA, ARS, Albany, CA 94710, United States
| | - Jeffery A McGarvey
- Foodborne Toxin Detection and Prevention Research Unit, USDA, ARS, Albany, CA 94710, United States
| |
Collapse
|
10
|
Luo LJ, Song L, Han Y, Zhen P, Han DY, Zhao X, Zhou X, Wei YH, Yu HX, Han PJ, Bai FY. Microbial communities and their correlation with flavor compound formation during the mechanized production of light-flavor Baijiu. Food Res Int 2023; 172:113139. [PMID: 37689903 DOI: 10.1016/j.foodres.2023.113139] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 06/10/2023] [Accepted: 06/12/2023] [Indexed: 09/11/2023]
Abstract
Light-flavor Baijiu fermentation is a typical spontaneous solid-state fermentation process fueled by a variety of microorganisms. Mechanized processes have been increasingly employed in Baijiu production to replace traditional manual operation processes, however, the microbiological and physicochemical dynamics in mechanized processes remain largely unknown. Here, we investigated the microbial community succession and flavor compound formation during a whole mechanized fermentation process of light-flavor Baijiu using the conventional dilution plating method, PacBio single-molecule real-time (SMRT) sequencing and headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry. The results showed that largely different fungal and bacterial communities were involved in the soaking and fermentation processes. A clear succession from Pantoea agglomerans to Bacillus (B.) smithii and B. coagulans in dominant bacterial species and from Cladosporium exasperatum to Saccharomyces cerevisiae and Lichtheimia ramosa in dominant fungal species occurred in the soaking processes. In the fermentation process, the most dominant bacterial species was shifted from Pantoea agglomerans to Lactobacillus (La.) acetotolerans and the most dominant fungal species were shifted from Lichtheimia ramose and Rhizopus arrhizus to Saccharomyces cerevisiae. The bacterial and fungal species positively associated with acidity and the formation of ethanol and different flavor compounds were specified. The microbial species exhibited strong co-occurrence or co-exclusion relationships were also identified. The results are helpful for the improvement of mechanized fermentation process of light-flavor Baijiu production.
Collapse
Affiliation(s)
- Lu-Jun Luo
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Liang Song
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Ying Han
- Technology Center, Shanxi Xinghuacun Fen Wine Factory Co. Ltd., Fenyang, Shanxi 032205, PR China
| | - Pan Zhen
- Technology Center, Shanxi Xinghuacun Fen Wine Factory Co. Ltd., Fenyang, Shanxi 032205, PR China
| | - Da-Yong Han
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Xin Zhao
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Xin Zhou
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Yu-Hua Wei
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Hui-Xin Yu
- Technology Center, Shanxi Xinghuacun Fen Wine Factory Co. Ltd., Fenyang, Shanxi 032205, PR China
| | - Pei-Jie Han
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China.
| | - Feng-Yan Bai
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China; College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, PR China.
| |
Collapse
|
11
|
Tomar V, Rikkerink EHA, Song J, Sofkova-Bobcheva S, Bus VGM. Structure-Function Characterisation of Eop1 Effectors from the Erwinia-Pantoea Clade Reveals They May Acetylate Their Defence Target through a Catalytic Dyad. Int J Mol Sci 2023; 24:14664. [PMID: 37834112 PMCID: PMC10572645 DOI: 10.3390/ijms241914664] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
The YopJ group of acetylating effectors from phytopathogens of the genera Pseudomonas and Ralstonia have been widely studied to understand how they modify and suppress their host defence targets. In contrast, studies on a related group of effectors, the Eop1 group, lag far behind. Members of the Eop1 group are widely present in the Erwinia-Pantoea clade of Gram-negative bacteria, which contains phytopathogens, non-pathogens and potential biocontrol agents, implying that they may play an important role in agroecological or pathological adaptations. The lack of research in this group of YopJ effectors has left a significant knowledge gap in their functioning and role. For the first time, we perform a comparative analysis combining AlphaFold modelling, in planta transient expressions and targeted mutational analyses of the Eop1 group effectors from the Erwinia-Pantoea clade, to help elucidate their likely activity and mechanism(s). This integrated study revealed several new findings, including putative binding sites for inositol hexakisphosphate and acetyl coenzyme A and newly postulated target-binding domains, and raises questions about whether these effectors function through a catalytic triad mechanism. The results imply that some Eop1s may use a catalytic dyad acetylation mechanism that we found could be promoted by the electronegative environment around the active site.
Collapse
Affiliation(s)
- Vishant Tomar
- Mt Albert Research Centre, The New Zealand Institute for Plant and Food Research Limited, Auckland 1025, New Zealand
- School of Agriculture and Environment, Massey University, Private Bag 11222, Palmerston North 4442, New Zealand;
| | - Erik H. A. Rikkerink
- Mt Albert Research Centre, The New Zealand Institute for Plant and Food Research Limited, Auckland 1025, New Zealand
| | - Janghoon Song
- Pear Research Institute, National Institute of Horticultural & Herbal Science, Rural Development Administration, Naju 58216, Republic of Korea
| | - Svetla Sofkova-Bobcheva
- School of Agriculture and Environment, Massey University, Private Bag 11222, Palmerston North 4442, New Zealand;
| | - Vincent G. M. Bus
- Hawkes Bay Research Centre, The New Zealand Institute for Plant and Food Research Limited, Havelock North 4130, New Zealand;
| |
Collapse
|
12
|
Koirala S, Myers B, Shin GY, Gitaitis R, Kvitko BH, Dutta B. Evaluating Options to Increase the Efficacy of Biocontrol Agents for the Management of Pantoea spp. Under Field Conditions. Plant Dis 2023; 107:2701-2708. [PMID: 36774574 DOI: 10.1094/pdis-11-22-2710-re] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Center rot of onion is caused by a complex of plant pathogenic Pantoea species, which can lead to significant yield losses in the field and during storage. Conventional growers use foliar protectants such as a mixture of copper bactericides and an ethylene-bis-dithiocarbamate (EBDC) fungicide to manage the disease; however, organic growers have limited management options besides copper-protectants. Biocontrol agents (BCAs) provide an alternative; however, their efficacy could be compromised due in part to their inability to colonize the foliage. We hypothesized that pretreatment with peroxide (OxiDate 2.0: a.i., hydrogen peroxide and peroxyacetic acid) enhances the colonizing ability of the subsequently applied BCAs, leading to effective center rot management. Field trials were conducted in 2020 and 2021 to assess the efficacy of peroxide, BCAs (Serenade ASO: Bacillus subtilis and BlightBan: Pseudomonas fluorescens), and an insecticide program (tank mix of spinosad and neem oil) to manage center rot. We observed no significant difference in foliar area under the disease progress curve (AUDPC) between the peroxide pretreated P. fluorescens plots and only P. fluorescens-treated plots in 2020 and 2021. Peroxide pretreatment before B. subtilis application significantly reduced the foliar AUDPC as compared with the stand-alone B. subtilis treatment in 2020; however, no such difference was observed in 2021. Similarly, peroxide pretreatment before either of the BCAs did not seem to reduce the incidence of bulb rot as compared with the stand-alone BCA treatment in any of the trials (2020 and 2021). Additionally, our foliar microbiome study showed comparatively higher P. fluorescens retention on peroxide pretreated onion foliage; however, at the end of the growing season, P. fluorescens was drastically reduced and was virtually nonexistent (<0.002% of the total reads). Overall, the pretreatment with peroxide had a limited effect in improving the foliar colonizing ability of BCAs and consequently a limited effect in managing center rot.
Collapse
Affiliation(s)
- Santosh Koirala
- Department of Plant Pathology, University of Georgia, Tifton, GA
| | - Brendon Myers
- Department of Plant Pathology, University of Georgia, Tifton, GA
| | - Gi Yoon Shin
- Department of Plant Pathology, University of Georgia, Athens, GA
| | - Ron Gitaitis
- Department of Plant Pathology, University of Georgia, Tifton, GA
| | - Brian H Kvitko
- Department of Plant Pathology, University of Georgia, Athens, GA
| | - Bhabesh Dutta
- Department of Plant Pathology, University of Georgia, Tifton, GA
| |
Collapse
|
13
|
Boonroumkaew P, Rodpai R, Saeung A, Aupalee K, Saingamsook J, Poolphol P, Sadaow L, Sanpool O, Janwan P, Thanchomnang T, Intapan PM, Maleewong W. Bacterial community structure of Anopheles hyrcanus group, Anopheles nivipes, Anopheles philippinensis, and Anopheles vagus from a malaria-endemic area in Thailand. PLoS One 2023; 18:e0289733. [PMID: 37590198 PMCID: PMC10434920 DOI: 10.1371/journal.pone.0289733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 07/25/2023] [Indexed: 08/19/2023] Open
Abstract
Bacterial content of mosquitoes has given rise to the development of innovative tools that influence and seek to control malaria transmission. This study identified the bacterial microbiota in field-collected female adults of the Anopheles hyrcanus group and three Anopheles species, Anopheles nivipes, Anopheles philippinensis, and Anopheles vagus, from an endemic area in the southeastern part of Ubon Ratchathani Province, northeastern Thailand, near the Lao PDR-Cambodia-Thailand border. A total of 17 DNA libraries were generated from pooled female Anopheles abdomen samples (10 abdomens/ sample). The mosquito microbiota was characterized through the analysis of DNA sequences from the V3-V4 regions of the 16S rRNA gene, and data were analyzed in QIIME2. A total of 3,442 bacterial ASVs were obtained, revealing differences in the microbiota both within the same species/group and between different species/group. Statistical difference in alpha diversity was observed between An. hyrcanus group and An. vagus and between An. nivipes and An. vagus, and beta diversity analyses showed that the bacterial community of An. vagus was the most dissimilar from other species. The most abundant bacteria belonged to the Proteobacteria phylum (48%-75%) in which Pseudomonas, Serratia, and Pantoea were predominant genera among four Anopheles species/group. However, the most significantly abundant genus observed in each Anopheles species/group was as follows: Staphylococcus in the An. hyrcanus group, Pantoea in the An. nivipes, Rosenbergiella in An. philippinensis, and Pseudomonas in An. vagus. Particularly, Pseudomonas sp. was highly abundant in all Anopheles species except An. nivipes. The present study provides the first study on the microbiota of four potential malaria vectors as a starting step towards understanding the role of the microbiota on mosquito biology and ultimately the development of potential tools for malaria control.
Collapse
Affiliation(s)
- Patcharaporn Boonroumkaew
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Rutchanee Rodpai
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Atiporn Saeung
- Center of Insect Vector Study, Department of Parasitology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Kittipat Aupalee
- Center of Insect Vector Study, Department of Parasitology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Jassada Saingamsook
- Center of Insect Vector Study, Department of Parasitology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Petchaboon Poolphol
- The Office of Disease Prevention and Control Region 10th, Ubon Ratchathani, Thailand
| | - Lakkhana Sadaow
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Oranuch Sanpool
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Penchom Janwan
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, Thailand
| | - Tongjit Thanchomnang
- Faculty of Medicine, Mahasarakham University, Kham Riang, Maha Sarakham, Thailand
| | - Pewpan M. Intapan
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| |
Collapse
|
14
|
Maldani M, Aliyat FZ, Morabito M, Giarratana F, Nassiri L, Ibijbijen J. The effects of herbicide application on two soil phosphate solubilizing bacteria: Pantoea agglomerans and Serratia rubidaea. Ecotoxicology 2023; 32:720-735. [PMID: 37407783 DOI: 10.1007/s10646-023-02681-4] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/23/2023] [Indexed: 07/07/2023]
Abstract
The application of synthetic pesticides is one of the fastest acting tools at farmers' disposal to prevent and mitigate the threats posed by plant pests in agriculture. However, the effects of these above-ground applications of pesticides are known to be detrimental to some belowground, non-target soil biota. At present, the effects many pesticides have on key functional microbial groups associated with phosphate (P) solubilization in the soil are still largely unknown. The purpose of this study was to compare the effects of two herbicides, glyphosate, and paraquat, on phosphate solubilizing bacteria (PSB) with and without pH adjustment (after herbicide addition) since pH is a major indicator of P solubilization. In our assay, two PSB strains (Pantoea agglomerans and Serratia rubidaea) were chosen to assess their ability to solubilize tricalcium phosphate (TCP) by using the vanadate-molybdate method (to measure the amount of P solubilized) in the presence of glyphosate (5.4 g/L and 10.8 g/L) or paraquat (2 g/L and 4 g/L) separately. To assess the effect of PSB treated by the herbicides, a growth experiment using PSB inoculated wheat seedlings was performed under greenhouse conditions (25 °C, light 16 h/8 h dark). After four weeks, wheat above-ground growth parameters were measured. Our results showed that even under recommended doses of glyphosate (5.4 g/L) and paraquat (2 g/L), a decrease in P solubilization activity was observed in P. agglomerans and S. rubidaea. Whilst paraquat affected TCP solubilization more than glyphosate with and without pH adjustment, there was a significant decrease (p < 0.05) in TCP solubilization, up to 39% and 93% in the presence of glyphosate and paraquat, respectively, for S. rubidaea, and up to 45% and 95% in the presence of glyphosate and paraquat, respectively, for P. agglomerans. The effect of the herbicides on the PSB had the same results as in the greenhouse test on wheat seedling growth, confirming that these herbicides have both above and belowground negative effects, despite being used at recommended doses.
Collapse
Affiliation(s)
- Mohamed Maldani
- Department of Biological & Forensic Sciences, Fayetteville State University, 1200 Murchison Road, Fayetteville, NC, 28301, USA.
- Environment and Valorization of Microbial and Plant Resources Unit, Faculty of Sciences, Moulay Ismail University, Meknes, Morocco.
| | - Fatima Zahra Aliyat
- Environment and Valorization of Microbial and Plant Resources Unit, Faculty of Sciences, Moulay Ismail University, Meknes, Morocco
| | - Marina Morabito
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, Messina, Italy
| | - Filippo Giarratana
- Department of Veterinary Science, University of Messina, Polo Universitario dell' Annunziata, Messina, Italy
| | - Laila Nassiri
- Environment and Valorization of Microbial and Plant Resources Unit, Faculty of Sciences, Moulay Ismail University, Meknes, Morocco
| | - Jamal Ibijbijen
- Environment and Valorization of Microbial and Plant Resources Unit, Faculty of Sciences, Moulay Ismail University, Meknes, Morocco
| |
Collapse
|
15
|
Cui Y, Zhao Y, Cai R, Zhou H, Chen J, Feng L, Guo C, Wang D. Isolation and Identification of a Phosphate-Solubilizing Pantoea dispersa with a Saline-Alkali Tolerance and Analysis of Its Growth-Promoting Effects on Silage Maize Under Saline-Alkali Field Conditions. Curr Microbiol 2023; 80:291. [PMID: 37464097 DOI: 10.1007/s00284-023-03408-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 07/05/2023] [Indexed: 07/20/2023]
Abstract
Phosphate-solubilizing bacteria (PSB) are microorganisms that can dissolve insoluble phosphorus (P) to accessible forms. This study aimed to screen saline-alkali-tolerant PSB and analyze its growth promoting properties, and evaluate its effects on the growth, quality, soil nutrient balance, and enzyme activities of silage maize in the field. We isolated six phosphate-solubilizing strains from rhizosphere soil of silage maize planted in saline-alkali land, and FC-1 with the best P-solubilizing effect was used for further study. The morphological, physiological and biochemical analysis, and 16S rDNA and housekeeping gene atpD sequencing were performed for identification. FC-1 was identified as Pantoea dispersa and had high P solubility. The phosphate solubility of FC-1 using four P sources ranged from 160.79 to 270.22 mg l-1. FC-1 produced indole-3-acetic acid (IAA) and decreased the pH of the growth media by secreting organic acids, including citric acid, malic acid, succinic acid, and acetic acid. The results of a field experiment indicated that FC-1 treatment increased the height, stem diameter, fresh weight, dry weight, starch content, crude protein content, and total P content of silage maize by 9.8, 9.2, 12.6, 11.7, 12.6, 18.3, and 17.4%, respectively. The nitrogen, potassium, phosphorus, and organic matter contents in the rhizosphere soil of silage maize increased by 29.8, 17.1, 17.9, and 25.3%, respectively; urease, catalase, sucrase, and alkaline phosphatase levels also increased by 24.7, 26.7, 24.0, and 19.5%, respectively. FC-1 promoted the growth of silage maize by improving nutrient metabolism and enzyme activities in saline-alkali soil and may be an effective alternative to fertilizers.
Collapse
Affiliation(s)
- Ying Cui
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Limin Development Zone, Harbin Normal University, No. 1 of Shida Road, Harbin, 150025, China
| | - Yujie Zhao
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Limin Development Zone, Harbin Normal University, No. 1 of Shida Road, Harbin, 150025, China
| | - Run Cai
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Limin Development Zone, Harbin Normal University, No. 1 of Shida Road, Harbin, 150025, China
| | - Hao Zhou
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Limin Development Zone, Harbin Normal University, No. 1 of Shida Road, Harbin, 150025, China
| | - Jiaxin Chen
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Limin Development Zone, Harbin Normal University, No. 1 of Shida Road, Harbin, 150025, China
| | - Lirong Feng
- Science and Technology Building, Heilongjiang Guohong Environmental Co., Ltd., No. 600 of Chuangxin Third Road, Songbei Zone, Harbin, 150029, China
| | - Changhong Guo
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Limin Development Zone, Harbin Normal University, No. 1 of Shida Road, Harbin, 150025, China.
| | - Dan Wang
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Limin Development Zone, Harbin Normal University, No. 1 of Shida Road, Harbin, 150025, China.
| |
Collapse
|
16
|
Bhat BA, Tariq L, Nissar S, Islam ST, Islam SU, Mangral Z, Ilyas N, Sayyed RZ, Muthusamy G, Kim W, Dar TUH. The role of plant-associated rhizobacteria in plant growth, biocontrol and abiotic stress management. J Appl Microbiol 2022; 133:2717-2741. [PMID: 36017561 DOI: 10.1111/jam.157962022] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 08/07/2022] [Accepted: 08/15/2022] [Indexed: 05/27/2023]
Abstract
The rhizosphere is the region around the plant roots where maximum microbial activities occur. In the rhizosphere, microorganisms' beneficial and harmful activities affect plant growth and development. The mutualistic rhizospheric bacteria which improve plant growth and health are known as plant growth-promoting rhizobacteria (PGPR). They are very important due to their ability to help the plant in diverse ways. PGPR such as Pseudomonas, Bacillus, Azospirillum, Azotobacter, Arthrobacter, Achromobacter, Micrococcus, Enterobacter, Rhizobium, Agrobacterium, Pantoea and Serratia are now very well known. Rhizomicrobiome plays critical roles in nutrient acquisition and assimilation, improved soil texture, secreting and modulating extracellular molecules such as hormones, secondary metabolites, antibiotics and various signal compounds, all leading to the enhancement of plant growth and development. The microbes and compounds they secrete constitute valuable biostimulants and play pivotal roles in modulating plant stress responses. In this review, we highlight the rhizobacteria diversity and cutting-edge findings focusing on the role of a PGPR in plant growth and development. We also discussed the role of PGPR in resisting the adverse effects arising from various abiotic (drought, salinity, heat, heavy metals) stresses.
Collapse
Affiliation(s)
- Basharat Ahmad Bhat
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar, India
| | - Lubna Tariq
- Department of Biotechnology, School of Biosciences and Biotechnology, BGSB University, Rajouri, India
| | - Showkat Nissar
- Department of Botany, School of Biological Sciences, University of Kashmir, Srinagar, India
| | - Sheikh Tajamul Islam
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar, India
| | - Shahid Ul Islam
- Department of Biotechnology, School of Biosciences and Biotechnology, BGSB University, Rajouri, India
| | - Zahid Mangral
- Department of Biotechnology, School of Biosciences and Biotechnology, BGSB University, Rajouri, India
| | - Noshin Ilyas
- Department of Botany, PMAS-Arid Agriculture University, Rawalpindi, Pakistan
| | | | - Govarthanan Muthusamy
- Department of Environmental Engineering, Kyungpook National University, Daegu, South Korea
| | - Woong Kim
- Department of Environmental Engineering, Kyungpook National University, Daegu, South Korea
| | - Tanvir Ul Hasan Dar
- Department of Biotechnology, School of Biosciences and Biotechnology, BGSB University, Rajouri, India
| |
Collapse
|
17
|
Ma Y, Sun L, Wang R, Gu Y, Xu H, Lei P. High-Efficiency Extraction of Pantoea alhagi Exopolysaccharides Driven by pH-Related Changes in the Envelope Structure. Molecules 2022; 27:molecules27217209. [PMID: 36364036 PMCID: PMC9657395 DOI: 10.3390/molecules27217209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/21/2022] [Accepted: 10/21/2022] [Indexed: 12/02/2022] Open
Abstract
Increasing numbers of exopolysaccharides and their properties have been explored. However, the difficulty of extracting high-viscosity exopolysaccharides has hindered their further industrialization. In this research, we explored a strategy based on encapsulated structure control under different pH to efficiently extract Pantoea alhagi exopolysaccharides (PAPS). Results showed that at pH levels of 6, 12, and 13, the extraction efficiency of PAPS was elevated, and the yield did not decrease. The rheological properties of the pH−12-treated PAPS were better than those of PAPS treated at pH 7, while the pH−6-treated PAPS decreased. The effects of pH−12-treated PAPS on soil macroaggregates and soil’s water evaporation rate were similar to those of PAPS treated at pH 7. In addition, we observed that treatment at pH 12 produced a significantly reduced encapsulated structure compared with treatment at pH 7. The proportion of unsaturated fatty acids after treatment at pH 12 was higher than after treatment at pH 7, which may result in reduced encapsulated structure in pH−12 conditions. These results enrich the understanding of the effect that alters pH conditions on the encapsulated structure to improve the extraction efficiency of exopolysaccharides and provide a theoretical basis for the extraction of exopolysaccharides with extreme viscosity.
Collapse
Affiliation(s)
| | | | | | | | - Hong Xu
- Correspondence: (H.X.); (P.L.); Tel./Fax: +86-25-58139433 (H.X.); +86-25-58139433 (P.L.)
| | - Peng Lei
- Correspondence: (H.X.); (P.L.); Tel./Fax: +86-25-58139433 (H.X.); +86-25-58139433 (P.L.)
| |
Collapse
|
18
|
WeiXie L, Yang R, Liu B, Lei N, Peng S, Li J, Tong J, Deng R, Li J. Effects of Pb-, Cd-resistant bacterium Pantoea sp. on growth, heavy metal uptake and bacterial communities in oligotrophic growth substrates of Lolium multiflorum Lam. Environ Sci Pollut Res Int 2022; 29:50742-50754. [PMID: 35237915 DOI: 10.1007/s11356-022-19180-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 02/08/2022] [Indexed: 06/14/2023]
Abstract
Phosphate-solubilizing bacteria (PSB) can accelerate phytoremediation, especially in those fertilized soils. However, PSB function in oligotrophic growth substrates remains poorly studied. In this study, we isolated lead (Pb)- and cadmium (Cd)-resistant PSB from contaminated sandy soil at an abandoned lubricant plant. The isolated Pantoea sp. PP4 (PP4 hereafter) can produce organic acid and IAA (Indole-3-acetic acid) and dissolve up to 238 mg/L of inorganic phosphate Ca2(PO4)3, exhibiting biosorption capability for Pb and bioprecipitation for Pb and Cd. In the sand pot experiment, inoculation of PP4 increased the accumulation of Pb and Cd in Lolium multiflorum Lam. by 28.9% and 95.5%, respectively, and increased the available phosphorous in oligotrophic river sand by 30.8% (P < 0.05). Meanwhile, the growth of Lolium multiflorum Lam. was also stimulated, resulting in 89.2%, 57.1%, 184.6%, and 28.5% increase in fresh weight, dry weight, root length, and shoot length, respectively. NMDS analysis showed that the bacterial communities in river sand were more clustered after inoculation with PP4. These results indicated that the application of Pantoea sp. PP4 can facilitate the phytoremediation of Pb and Cd in oligotrophic growth substrates, forming a convergent bacterial community. Our findings highlighted the importance of identifying ideal PSB to improve phytoremediation efficiency in oligotrophic environments.
Collapse
Affiliation(s)
- Luyao WeiXie
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, People's Republic of China
| | - Ruilan Yang
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, People's Republic of China
| | - Boyu Liu
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, People's Republic of China
| | - Ningfei Lei
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, People's Republic of China
- State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu, 610059, People's Republic of China
| | - Shuming Peng
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, People's Republic of China
- State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu, 610059, People's Republic of China
| | - Jingji Li
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, People's Republic of China
- State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu, 610059, People's Republic of China
| | - Jin Tong
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, People's Republic of China
| | - Ran Deng
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, People's Republic of China
| | - Jing Li
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, People's Republic of China.
- State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu, 610059, People's Republic of China.
| |
Collapse
|
19
|
Gao Z, Su J, Ali A, Wang X, Bai Y, Wang Y, Wang Z. Denitrification strategy of Pantoea sp. MFG10 coupled with microbial dissimilatory manganese reduction: Deciphering the physiological response based on extracellular secretion. Bioresour Technol 2022; 355:127278. [PMID: 35545210 DOI: 10.1016/j.biortech.2022.127278] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/03/2022] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
In this study, the manganese (Mn) reduction-coupled denitrification strategy of dissimilatory Mn reducing bacteria was insightfully investigated. Different parameters (MnO2 level, pH, and temperature) were optimized by kinetic fitting to improve denitrification and Mn reduction effects. The 300 mg L-1 MnO2 addition achieved 98.72% NO3--N removal in 12 h, which was 54.62% higher than blank group without MnO2. Scale-up studies showed that the metabolic activity of the bacteria was effectively enhanced by the addition of MnO2. Besides the deepening of humification in the system, tryptophan-like protein and polysaccharide as potential electron donor precursors revealed remarkable contributions to the extracellular secretion-dependent denitrification process of DMRB. The effect of EPS on Mn reduction depends mainly on the capture of MnO2 by the LB-EPS layer versus its dissolution in the TB-EPS layer. Ultimately, the EPS possess a dual effect of accelerated denitrification and Mn reduction efficiency due to the enhanced EET process.
Collapse
Affiliation(s)
- Zhihong Gao
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Junfeng Su
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
| | - Amjad Ali
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Xumian Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Yihan Bai
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Yue Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Zhao Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| |
Collapse
|
20
|
Gu Q, Qiao J, Wang R, Lu J, Wang Z, Li P, Zhang L, Ali Q, Khan AR, Gao X, Wu H. The Role of Pyoluteorin from Pseudomonas protegens Pf-5 in Suppressing the Growth and Pathogenicity of Pantoea ananatis on Maize. Int J Mol Sci 2022; 23:ijms23126431. [PMID: 35742879 PMCID: PMC9223503 DOI: 10.3390/ijms23126431] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 05/30/2022] [Accepted: 06/03/2022] [Indexed: 01/24/2023] Open
Abstract
The rhizospheric bacterium Pseudomonas protegens Pf-5 can colonize the seed and root surfaces of plants, and can protect them from pathogen infection. Secondary metabolites, including lipopeptides and polyketides produced by Pf-5, are involved in its biocontrol activity. We isolated a crude extract from Pf-5. It exhibited significant surface activity and strong antibacterial activity against Pantoea ananatis DZ-12, which causes maize brown rot on leaves. HPLC analysis combined with activity tests showed that the polyketide pyoluteorin in the crude extract participated in the suppression of DZ-12 growth, and that the lipopeptide orfamide A was the major biosurfactant in the crude extract. Further studies indicated that the pyoluteorin in the crude extract significantly suppressed the biofilm formation of DZ-12, and it induced the accumulation of reactive oxygen species in DZ-12 cells. Scanning electron microscopy and transmission electron microscopy observation revealed that the crude extract severely damaged the pathogen cells and caused cytoplasmic extravasations and hollowing of the cells. The pathogenicity of DZ-12 on maize leaves was significantly reduced by the crude extract from Pf-5 in a dose-dependent manner. The polyketide pyoluteorin had strong antibacterial activity against DZ-12, and it has the potential for development as an antimicrobial agent.
Collapse
Affiliation(s)
- Qin Gu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Junqing Qiao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;
| | - Ruoyi Wang
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Juan Lu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Zhengqi Wang
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Pingping Li
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Lulu Zhang
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Qurban Ali
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Abdur Rashid Khan
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Xuewen Gao
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Huijun Wu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
- Correspondence: ; Tel./Fax: +86-25-84395268
| |
Collapse
|
21
|
Cobo F, González A, Pérez-Carrasco V, García-Salcedo JA. Pantoea stewartii: A new pathogen as a cause of bacteremia? Enferm Infecc Microbiol Clin (Engl Ed) 2022; 40:278-280. [PMID: 35260365 DOI: 10.1016/j.eimce.2021.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/05/2021] [Accepted: 03/16/2021] [Indexed: 06/14/2023]
Affiliation(s)
- Fernando Cobo
- Servicio de Microbiología e Instituto de Investigación Biosanitaria ibs. GRANADA, Hospital Universitario Virgen de las Nieves, Granada, Spain.
| | - Adrián González
- Servicio de Microbiología e Instituto de Investigación Biosanitaria ibs. GRANADA, Hospital Universitario Virgen de las Nieves, Granada, Spain
| | - Virginia Pérez-Carrasco
- GENYO, Centro de Investigación Genómica y oncológica Pfizer/Universidad de Granada/Gobierno Regional de Andalucía, Granada, Spain
| | - José A García-Salcedo
- Servicio de Microbiología e Instituto de Investigación Biosanitaria ibs. GRANADA, Hospital Universitario Virgen de las Nieves, Granada, Spain; GENYO, Centro de Investigación Genómica y oncológica Pfizer/Universidad de Granada/Gobierno Regional de Andalucía, Granada, Spain
| |
Collapse
|
22
|
Zhang J, Wang J, Ma J, Liu L, Shen T, Tian Y. First Report of Onion ( Allium cepa) Bulb Rot Caused by Pantoea agglomerans in China. Plant Dis 2022; 106:1057. [PMID: 34524867 DOI: 10.1094/pdis-07-21-1393-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- Jinfeng Zhang
- School of Biological and Pharmaceutical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China
| | - Jianglai Wang
- School of Biological and Pharmaceutical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China
| | - Jinxiu Ma
- School of Biological and Pharmaceutical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China
| | - Lu Liu
- School of Biological and Pharmaceutical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China
| | - Tong Shen
- Research Institute, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China
| | - Yongqiang Tian
- School of Biological and Pharmaceutical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China
| |
Collapse
|
23
|
Hu H, Xu M, Song H, Zhai Z, Chen M, Zhou J, Hu D, Gao Y. First Report of Pantoea dispersa Causing Brown Blotch Disease in Flammulina filiformis in China. Plant Dis 2022; 106:1056. [PMID: 34491094 DOI: 10.1094/pdis-06-21-1270-pdn] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- Haijing Hu
- Bioengineering and Technological Research Centre for Edible and Medicinal Fungi, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, P.R. China
| | - Miao Xu
- Bioengineering and Technological Research Centre for Edible and Medicinal Fungi, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, P.R. China
| | - Haiyan Song
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding (Jiangxi Agricultural University), Ministry of Education of the P.R. China, Nanchang, Jiangxi 330045, P.R. China
| | - Zhijun Zhai
- Bioengineering and Technological Research Centre for Edible and Medicinal Fungi, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, P.R. China
| | - Minghui Chen
- Bioengineering and Technological Research Centre for Edible and Medicinal Fungi, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, P.R. China
| | - Jianping Zhou
- Bioengineering and Technological Research Centre for Edible and Medicinal Fungi, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, P.R. China
| | - Dianming Hu
- Bioengineering and Technological Research Centre for Edible and Medicinal Fungi, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, P.R. China
| | - Yang Gao
- Bioengineering and Technological Research Centre for Edible and Medicinal Fungi, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, P.R. China
| |
Collapse
|
24
|
Qadir M, Hussain A, Shah M, Lee IJ, Iqbal A, Irshad M, Sayyed A, Ahmad A, Hamayun M. Comparative assessment of chromate bioremediation potential of Pantoea conspicua and Aspergillus niger. J Hazard Mater 2022; 424:127314. [PMID: 34600376 DOI: 10.1016/j.jhazmat.2021.127314] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 09/18/2021] [Accepted: 09/19/2021] [Indexed: 05/20/2023]
Abstract
The recent work aims at the use of Pantoea conspicua (MT5) and Aspergillus niger (CRS3) to assess their bioremediation potential and growth restoration of Helianthus annuus L. under chromate (Cr+6) stress. The growth of the P. conspicua and A. niger was tested in Cr+6 supplemented media. The strains can withstand up to 1200 and 900 ppm respectively in the media and effectively bio-transform it to nontoxic form. Supplemented metal's levels significantly decreased the growth attribute of H. annuus (p< 0.05). On the other hand, P. conspicua and A. niger rescued the host plant by establishing higher colonization frequency with the host roots. Moreover, MT5 bio-transformed the toxic Cr+6 to non-toxic Cr+3 form in the rhizosphere. It also enhanced the host plant growth by producing phytohormones and ceasing Cr uptake and accumulation. Contrarily, CRS3 tends to accumulate and bio-transform metal in their hyphae. Nonetheless, both of the microbes tend to modulate phytohormones production and strengthening antioxidant system of the host. Improvement in the antioxidant system enabled the host plant to produce higher phenolics and flavonoids, and lower peroxidase. The associated plant species also exhibited higher ROS scavenging and lower ROS accumulation. Besides, the strains were able to produce higher amounts of phytohormones, including IAA, GA, and SA. Such activities rendered them as excellent phytostimulants, that can be used as biofertilizers in chromium polluted soils.
Collapse
Affiliation(s)
- Muhammad Qadir
- Department of Botany, Garden Campus, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan
| | - Anwar Hussain
- Department of Botany, Garden Campus, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan.
| | - Mohib Shah
- Department of Botany, Garden Campus, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan
| | - In Jung Lee
- Department of Applied Biosciences, Kyungpook National University, Daegu 702-701, Republic of Korea.
| | - Amjad Iqbal
- Department of Agriculture, Garden Campus, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan
| | - Muhammad Irshad
- Department of Botany, Garden Campus, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan
| | - Aqib Sayyed
- Department of Botany, Garden Campus, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan
| | - Ayaz Ahmad
- Department of Biotechnology, Garden Campus, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan
| | - Muhammad Hamayun
- Department of Botany, Garden Campus, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan
| |
Collapse
|
25
|
Tahir M, Khan MB, Shahid M, Ahmad I, Khalid U, Akram M, Dawood A, Kamran M. Metal-tolerant Pantoea sp. WP-5 and organic manures enhanced root exudation and phytostabilization of cadmium in the rhizosphere of maize. Environ Sci Pollut Res Int 2022; 29:6026-6039. [PMID: 34431061 DOI: 10.1007/s11356-021-16018-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 08/13/2021] [Indexed: 05/15/2023]
Abstract
This study investigated the phytoremediation potential of maize (Zea mays L.) in Cd-contaminated soil through co-inoculation of metal-tolerant plant beneficial rhizobacteria (MtPBR: Pantoea sp. strain WP-5) with organic manures (PM, poultry manure, and BGR, biogas residues). The objectives of this study were to (i) examine comparative efficiency of MtPBR, PM and BGR alone or in combined form to improve maize biomass and physiology and (ii) understand the role of organic acid production in root exudates of maize for Cd accumulation and translocation. Pantoea sp. WP-5 showed organic acid production and tolerance to high Cd concentration (1000 mg L-1), thereby inoculated to maize seeds sown in soil spiked with 75 mg Cd kg-1 soil and 500 g each of the organic manures per pot. The co-inoculation of MtPBR + BGR significantly (P<0.05) increased chlorophyll contents, root/shoot dry weight, photosynthetic rate, stomatal conductance, and relative water contents and decreased electrolyte leakage, malondialdehyde contents, ascorbate peroxidase, and catalase activity in maize over the control treatment. The co-inoculation of MtPBR + BGR produced significantly (P<0.05) higher concentrations of acetic and citric acid (52.7±0.5 and 22.8±0.08 μg g-1 root fwt, respectively) in root exudates of maize, which immobilized Cd within plant roots inferred by the positive relation (root Cd vs. organic acids; R2 = 0.80-0.92) and reduced Cd translocation to shoots inferred by the negative relation (shoot Cd vs. organic acids; R2 = 0.81-0.90). It is concluded that the application of MtPBR + BGR enhanced organic acid induced phytostabilization and accumulation of Cd in roots and restricted its translocation to shoots.
Collapse
Affiliation(s)
- Muhammad Tahir
- Department of Environmental Sciences, COMSATS University Islamabad, Campus, Vehari, Pakistan.
| | - Muhammad Bismillah Khan
- Department of Agronomy, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan, Pakistan
| | - Muhammad Shahid
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, 38000, Pakistan
| | - Iftikhar Ahmad
- Department of Environmental Sciences, COMSATS University Islamabad, Campus, Vehari, Pakistan.
- School of Agriculture and Biology, Shanghai Jiao Tong University/Key Laboratory of Urban Agriculture by Ministry of Agriculture of China, Shanghai, 200240, China.
| | - Umaira Khalid
- Department of Agronomy, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan, Pakistan
| | - Muhammad Akram
- Department of Environmental Sciences, COMSATS University Islamabad, Campus, Vehari, Pakistan
| | - Ahmad Dawood
- Department of Agronomy, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan, Pakistan
| | - Muhammad Kamran
- Department of Environmental Sciences, COMSATS University Islamabad, Campus, Vehari, Pakistan
| |
Collapse
|
26
|
Sun Y, Zhang Y, Li W, Zhang W, Xu Z, Dai M, Zhao G. Combination of the endophytic manganese-oxidizing bacterium Pantoea eucrina SS01 and biogenic Mn oxides: An efficient and sustainable complex in degradation and detoxification of malachite green. Chemosphere 2021; 280:130785. [PMID: 33971420 DOI: 10.1016/j.chemosphere.2021.130785] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 04/08/2021] [Accepted: 04/28/2021] [Indexed: 06/12/2023]
Abstract
Recently, Mn oxides (MnOxs) have been attracting considerable interest in the oxidation of organic pollutants. However, the reduction of MnOx in these reactions leads to the deactivation of the catalyst, which must be frequently regenerated. We evaluated the application of a manganese-oxidizing bacterium (MOB) and MnOx in removing toxic dyes. We studied the co-function of a plant-endophytic MOB, Pantoea eucrina SS01, with its bio-generated MnOx and evaluated the detoxification activity and chemical transformation mechanisms of the complex in malachite green (MG) degradation. We found a synergistic effect between MnOx and the strain. Particularly, strain SS01 could adsorb MG but could not degrade it, whereas the addition of Mn(II) promoted MG degradation by the formation of a complex containing the bacterium and MnOx aggregates (SS01-bio-MnOx), with distinct morphology characteristics. The complex showed a marked sustainability in the degradation of MG into less toxic or non-toxic metabolites. In this process, strain SS01 might have enhanced the regeneration of MnOx, accelerating MG degradation. Our data not only contribute to understanding the mechanism of MG removal by the SS01-bio-MnOx complex, but also provide a scientific basis for the future application of MOB and MnOx.
Collapse
Affiliation(s)
- Yuankai Sun
- College of Life Science, Shandong Normal University, Jinan, 250014, PR China
| | - Yonggang Zhang
- College of Life Science, Shandong Normal University, Jinan, 250014, PR China
| | - Wenzhe Li
- College of Life Science, Shandong Normal University, Jinan, 250014, PR China
| | - Wenchang Zhang
- College of Life Science, Shandong Normal University, Jinan, 250014, PR China
| | - Zhenlu Xu
- College of Life Science, Shandong Normal University, Jinan, 250014, PR China
| | - Meixue Dai
- College of Life Science, Shandong Normal University, Jinan, 250014, PR China
| | - Guoyan Zhao
- College of Life Science, Shandong Normal University, Jinan, 250014, PR China.
| |
Collapse
|
27
|
Manzoor N, Ahmed T, Noman M, Shahid M, Nazir MM, Ali L, Alnusaire TS, Li B, Schulin R, Wang G. Iron oxide nanoparticles ameliorated the cadmium and salinity stresses in wheat plants, facilitating photosynthetic pigments and restricting cadmium uptake. Sci Total Environ 2021; 769:145221. [PMID: 33736258 DOI: 10.1016/j.scitotenv.2021.145221] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 01/12/2021] [Accepted: 01/12/2021] [Indexed: 05/02/2023]
Abstract
Cadmium and salinity are the major threats to environmental resources and agricultural practice worldwide. The present work aims green synthesis, characterization, and application of iron oxide nanoparticles for co-alleviation of Cd and salt stresses in wheat plants. The iron oxide NPs were synthesized from a native bacterial strain, Pantoea ananatis strain RNT4, yielding a spherical FeO-NPs with a size ranging from 19 to 40 nm evidenced by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images. Results showed that application of 100 mg kg-1 of the bioengineered FeO-NPs in an original saline soil stimulated wheat plant growth, gaining 36.7% of additional length as compared with the control scenarios, via alleviating the detrimental effects of abiotic stresses and thereby reprogramming the morpho-physiological state of wheat plants. In addition, the presence of FeO-NPs in soil significantly increased the nutrient concentrations of N, P and K+, while reducing the Na+ and Cl- components in the wheat grain. Interestingly, application of the FeO-NPs in Cd-polluted soils eventually reduced wheat plant uptake of Cd by 72.5%, probably due to the adsorption of Cd onto the large surface of NPs and thereby, constraining Cd bioavailability to the plants. It provides the first evidence that a FeO-NPs-based treatment could be a candidate agricultural strategy for mitigating the Cd and salt stresses in Cd-polluted saline soils for safe agriculture practice.
Collapse
Affiliation(s)
- Natasha Manzoor
- Department of Soil and Water Sciences, China Agricultural University, Beijing 100193, China
| | - Temoor Ahmed
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Muhammad Noman
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Muhammad Shahid
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad 38000, Pakistan.
| | - Muhammad Mudassir Nazir
- Department of agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Liaqat Ali
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad 38000, Pakistan
| | - Taghreed S Alnusaire
- Biology Department, College of Science, Jouf University, Sakaka 2014, Saudi Arabia
| | - Bin Li
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Rainer Schulin
- Department of Environmental System Science, ETH Zurich, Zurich, Switzerland
| | - Gang Wang
- Department of Soil and Water Sciences, China Agricultural University, Beijing 100193, China; National Black Soil & Agriculture Research, China Agricultural University, Beijing 100193, China.
| |
Collapse
|
28
|
Ghosh A, Pramanik K, Bhattacharya S, Mondal S, Ghosh SK, Ghosh PK, Maiti TK. Abatement of arsenic-induced phytotoxic effects in rice seedlings by an arsenic-resistant Pantoea dispersa strain. Environ Sci Pollut Res Int 2021; 28:21633-21649. [PMID: 33411291 DOI: 10.1007/s11356-020-11816-7] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 11/23/2020] [Indexed: 06/12/2023]
Abstract
Population detonation and rapid industrialization are the major factors behind the reduction in cultivable land that affects crop production seriously. This situation is further being deteriorated due to the negative effects of abiotic stresses. Under such conditions, plant growth-promoting rhizobacteria (PGPR) are found to improve crop production which is essential for sustainable agriculture. This study is focused on the isolation of potent arsenic (As)-resistant PGPR from the agricultural land of West Bengal, India, and its application to reduce As translocation in rice seedlings. After screening, an As-resistant PGPR strain AS18 was identified by phenotypic characters and 16S rDNA sequence-based homology as Pantoea dispersa. This strain displayed nitrogen fixation, phosphate solubilization, 1-aminocyclopropane-1-carboxylic acid deaminase (ACCD) activity, indole-3-acetic acid (IAA) production, in addition to As (III) resistance up to 3750 μg/mL. The As removal efficiency of this strain was up to 93.12% from the culture medium as evidenced by AAS. The bioaccumulation property of AS18 strain was further validated by TEM-EDAX-XRD-XRF-FTIR studies. This strain showed significant morpho-biochemical improvements including antioxidant enzymatic activities and As-minimization in plant (rice) cells. Thus, being an As-resistant potent PGPR, AS18 strain is expected to be applied in As-spiked agricultural fields for bioremediation and phytostimulation.
Collapse
Affiliation(s)
- Antara Ghosh
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Purba Bardhaman, West Bengal, 713104, India
| | - Krishnendu Pramanik
- Mycology and Plant Pathology Laboratory, Department of Botany, Siksha Bhavana, Visva-Bharati, Santiniketan, Birbhum, West Bengal, 731235, India
| | - Shatabda Bhattacharya
- Nanospinics Laboratory, Department of Materials Science & Engineering, Seoul National University, Seoul, 151-744, South Korea
| | - Sayanta Mondal
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Purba Bardhaman, West Bengal, 713104, India
| | - Sudip Kumar Ghosh
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Purba Bardhaman, West Bengal, 713104, India
| | | | - Tushar Kanti Maiti
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Purba Bardhaman, West Bengal, 713104, India.
| |
Collapse
|
29
|
Sahu KP, Kumar A, Patel A, Kumar M, Gopalakrishnan S, Prakash G, Rathour R, Gogoi R. Rice Blast Lesions: an Unexplored Phyllosphere Microhabitat for Novel Antagonistic Bacterial Species Against Magnaporthe oryzae. Microb Ecol 2021; 81:731-745. [PMID: 33108474 DOI: 10.1007/s00248-020-01617-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 10/05/2020] [Indexed: 05/28/2023]
Abstract
Dark brown necrotic lesions caused by Magnaporthe oryzae on rice foliage is a contrasting microhabitat for leaf-colonizing microbiome as compared with the surrounding healthy chlorophyll-rich tissues. We explored culturable bacterial communities of blast lesions by adopting microbiological tools for isolating effective biocontrol bacterial strains against M. oryzae. 16S rRNA gene sequencing-based molecular identification revealed a total of 17 bacterial species belonging to Achromobacter (2), Comamonas (1), Curtobacterium (1), Enterobacter (1), Leclercia (2), Microbacterium (1), Pantoea (3), Sphingobacterium (1), and Stenotrophomonas (5) found colonizing the lesion. Over 50% of the bacterial isolates were able to suppress the mycelial growth of M. oryzae either by secretory or volatile metabolites. Volatiles released by Achromobacter sp., Curtobacterium luteum, Microbacterium oleivorans, Pantoea ananatis, Stenotrophomonas maltophilia, and Stenotrophomonas sp., and were found to be fungicidal while others showed fungistatic action. In planta pathogen challenged evaluation trial revealed the biocontrol potential of Stenotrophomonas sp. and Microbacterium oleivorans that showed over 60% blast severity suppression on the rice leaf. The lesion-associated bacterial isolates were found to trigger expression of defense genes such as OsCEBiP, OsCERK1, OsEDS1, and OsPAD4 indicating their capability to elicit innate defense in rice against blast disease. The investigation culminated in the identification of potential biocontrol agents for the management of rice blast disease.
Collapse
Affiliation(s)
- Kuleshwar Prasad Sahu
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Aundy Kumar
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India.
| | - Asharani Patel
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Mukesh Kumar
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
| | - S Gopalakrishnan
- Division of Genetics, ICAR -Indian Agricultural Research Institute, New Delhi, 110012, India
| | - G Prakash
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
| | - R Rathour
- Department of Agricultural Biotechnology, CSK Himachal Pradesh Agricultural University, Palampur, Himachal Pradesh, 176062, India
| | - Robin Gogoi
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
| |
Collapse
|
30
|
Stumpf S, Leach L, Srinivasan R, Coolong T, Gitaitis R, Dutta B. Foliar Chemical Protection Against Pantoea ananatis in Onion Is Negated by Thrips Feeding. Phytopathology 2021; 111:258-267. [PMID: 32748732 DOI: 10.1094/phyto-05-20-0163-r] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Center rot of onion, caused by Pantoea ananatis, is an economically important disease in onion production in Georgia and elsewhere in the United States. Growers rely on frequent foliar applications of bactericides and, in some cases, plant defense inducers to manage this disease. However, regular prophylactic application of these chemicals is not cost-effective and may not be environmentally friendly. Thrips (Thrips tabaci and Frankliniella fusca) are vectors of P. ananatis, and their feeding may compromise the effectiveness of foliar applications against P. ananatis. In this study, foliar treatments with acibenzolar-S-methyl (Actigard 50WG), cupric hydroxide (Kocide 3000), and Actigard plus Kocide were evaluated for their effectiveness in the presence and absence of thrips infestation at two critical onion growth stages: bulb initiation and bulb swelling. Onion growth stage had no impact on the effectiveness of either Kocide or Actigard. In the absence of thrips, Kocide application resulted in reduced center rot incidence compared with Actigard, regardless of the growth stage. However, when thrips were present, the efficacy of both Kocide and Actigard was reduced, with bulb incidence not significantly different from the nontreated control. In independent greenhouse studies in the presence or absence of thrips, it was observed that use of protective chemicals (Kocide, Actigard, and their combinations) at different rates also affected pathogen progression into internal neck tissue and incidence of bulb rot. These results suggest that thrips infestation can reduce the efficacy of protective chemical treatments against P. ananatis. Thrips feeding on onion foliage and resulting feeding scars could facilitate P. ananatis entry and subsequently compromise the efficacy of protective chemical treatments. Therefore, an effective center rot management strategy should likely include thrips management in addition to bactericides at susceptible growth stages of onion.
Collapse
Affiliation(s)
- Spencer Stumpf
- Department of Plant Pathology, Coastal Plain Experiment Station, University of Georgia, Tifton, GA 31793
| | - Leana Leach
- Department of Plant Pathology, Coastal Plain Experiment Station, University of Georgia, Tifton, GA 31793
| | | | - Timothy Coolong
- Department of Horticulture, University of Georgia, Athens, GA 30602
| | - Ron Gitaitis
- Department of Plant Pathology, Coastal Plain Experiment Station, University of Georgia, Tifton, GA 31793
| | - Bhabesh Dutta
- Department of Plant Pathology, Coastal Plain Experiment Station, University of Georgia, Tifton, GA 31793
| |
Collapse
|
31
|
Faria PSA, Marques VDO, Selari PJRG, Martins PF, Silva FG, Sales JDF. Multifunctional potential of endophytic bacteria from Anacardium othonianum Rizzini in promoting in vitro and ex vitro plant growth. Microbiol Res 2020; 242:126600. [PMID: 33011553 DOI: 10.1016/j.micres.2020.126600] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 08/05/2020] [Accepted: 09/04/2020] [Indexed: 01/15/2023]
Abstract
Anacardium othonianum Rizzini, a cashew tree native to the Brazilian Cerrado, is economically important due to its applications in the food, chemical and pharmaceutical industries. However, A. othonianum yields a crop with low productivity due to a number of factors, such as nutritionally poor soils, drought and losses due to pests and diseases. Brazil is one of the nine largest cashew nut producers worldwide, and sustainable technologies are needed to increase the productivity of this crop. In this context, the use of endophytic microorganisms could promote plant growth and provide protection against phytopathogens. In this study, the isolation of the root endophytic community of A. othonianum led to the characterization of 22 distinct bacterial strains with multifunctional traits for plant growth promotion. The results of in vitro assays to assess auxin synthesis, phosphate solubilization, phosphatase and siderophore production and biocontrol against Fusarium oxysporum led to the selection of Acinetobacter lwoffii Bac109 and Pantoea agglomerans Bac131 as the most promising strains. The reinoculation of the Bac109 and Bac131 strains onto A. othonianum seeds showed that the treatment containing a mixture of these strains was the most effective in promoting increases in the biometric parameters of early plant growth. Thus, this study highlights the biotechnological potential of a consortium of A. lwoffii Bac109 and P. agglomerans Bac131 for future applications in sustainable cashew cultivation.
Collapse
Affiliation(s)
- Paula Sperotto Alberto Faria
- Federal Institute of Education, Science and Technology Goiano, (Instituto Federal de Instituto Federal de Educação, Ciência e Tecnologia Goiano - IF Goiano), Rio Verde, Goiás, Brazil
| | - Vinicius de Oliveira Marques
- Federal Institute of Education, Science and Technology Goiano, (Instituto Federal de Instituto Federal de Educação, Ciência e Tecnologia Goiano - IF Goiano), Rio Verde, Goiás, Brazil
| | - Priscila Jane Romano Gonçalves Selari
- Federal Institute of Education, Science and Technology Goiano, (Instituto Federal de Educação, Ciência e Tecnologia Goiano - IF Goiano), Ceres, Goiás, Brazil.
| | - Paula Fabiane Martins
- Federal Institute of Education, Science and Technology Goiano, (Instituto Federal de Instituto Federal de Educação, Ciência e Tecnologia Goiano - IF Goiano), Rio Verde, Goiás, Brazil
| | - Fabiano Guimarães Silva
- Federal Institute of Education, Science and Technology Goiano, (Instituto Federal de Instituto Federal de Educação, Ciência e Tecnologia Goiano - IF Goiano), Rio Verde, Goiás, Brazil
| | - Juliana de Fátima Sales
- Federal Institute of Education, Science and Technology Goiano, (Instituto Federal de Instituto Federal de Educação, Ciência e Tecnologia Goiano - IF Goiano), Rio Verde, Goiás, Brazil
| |
Collapse
|
32
|
Ye L, Wang L, Jing C. Biotransformation of adsorbed arsenic on iron minerals by coexisting arsenate-reducing and arsenite-oxidizing bacteria. Environ Pollut 2020; 256:113471. [PMID: 31677878 DOI: 10.1016/j.envpol.2019.113471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 09/12/2019] [Accepted: 10/21/2019] [Indexed: 06/10/2023]
Abstract
Bacteria with arsenate-reducing (ars) and arsenite-oxidizing (aio) genes usually co-exist in aerobic environments, but their contrast impacts on arsenic (As) speciation and mobility remain unclear. To identify which kind of bacteria dominate As speciation under oxic conditions, we studied the biotransformation of adsorbed As on goethite in the co-existence of Pantoea sp. IMH with ars gene and Achromobacter sp. SY8 with aio gene. The incubation results show that SY8 dominated the dissolved As speciation as As(V), even though aio exhibited nearly 5 folds lower transcription levels than ars in IMH. Nevertheless, our XANES results suggest that SY8 showed a negligible effect on solid-bound As speciation whereas IMH reduced adsorbed As(V) to As(III). The change in As speciation on goethite surfaces led to a partial As structural change from bidentate corner-sharing to monodentate corner-sharing as evidenced by our EXFAS analysis. Our Mössbauer spectroscopic results suggest that the incubation with SY8 reduced the degree of crystallinity of goethite, and the reduced crystallinity can be partly compensated by IMH. The changes in As adsorption structure and in goethite crystallinity had a negligible effect on As release. The insights gained from this study improve our understanding of biotransformation of As in aerobic environment.
Collapse
Affiliation(s)
- Li Ye
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; China-Sri Lanka Joint Research and Demonstration Center for Water Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Liying Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chuanyong Jing
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| |
Collapse
|
33
|
De Gregorio PR, Michavila G, Ricciardi Muller L, de Souza Borges C, Pomares MF, Saccol de Sá EL, Pereira C, Vincent PA. Beneficial rhizobacteria immobilized in nanofibers for potential application as soybean seed bioinoculants. PLoS One 2017; 12:e0176930. [PMID: 28472087 PMCID: PMC5417607 DOI: 10.1371/journal.pone.0176930] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 04/19/2017] [Indexed: 11/18/2022] Open
Abstract
Seed inoculation with plant growth promoting rhizobacteria (PGPR) is an ideal tool to supply the soil with a high density of beneficial microorganisms. However, maintaining viable microorganisms is a major problem during seed treatment and storage. In this work, an evaluation was made of the effect of bacterial immobilization in nanofibers on the stability (viability and maintenance of beneficial properties) of two potential PGPR, Pantoea agglomerans ISIB55 and Burkholderia caribensis ISIB40. Moreover, the impact of soybean seed coating with nanofiber-immobilized rhizobacteria on bacterial survival during seed storage and on germination and plant growth parameters was determined. Bacterial nanoimmobilization and subsequent seed coating with nanofiber-immobilized rhizobacteria were carried out by electrospinning. The results demonstrate that this technique successfully immobilized P. agglomerans ISIB55 and B. caribensis ISIB40 because it did not affect the viability or beneficial properties of either rhizobacteria. Seed coating with nanofiber-immobilized rhizobacteria improved P. agglomerans ISIB55 and B. caribensis ISIB40 survival on seeds stored for 30 days and contributed to the successful colonization of both bacteria on the plant root. Moreover, seed coating with P. agglomerans ISIB55 increased germination, length and dry weight of the root. Furthermore, seed coating with B. caribensis ISIB40 increased leaf number and dry weight of the shoot. Therefore, the technique applied in the present work to coat seeds with nanofiber-immobilized PGPR could be considered a promising eco-friendly approach to improve soybean production using a microbial inoculant.
Collapse
Affiliation(s)
- Priscilla Romina De Gregorio
- Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET-UNT and Instituto de Química Biológica "Dr. Bernabé Bloj", Facultad de Bioquímica, Química y Farmacia, UNT. Chacabuco 461, San Miguel de Tucumán, Tucumán, Argentina
| | - Gabriela Michavila
- Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET-UNT and Instituto de Química Biológica "Dr. Bernabé Bloj", Facultad de Bioquímica, Química y Farmacia, UNT. Chacabuco 461, San Miguel de Tucumán, Tucumán, Argentina
| | | | - Clarissa de Souza Borges
- Departamento de Solos, Faculdade de Agronomia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 7712, Porto Alegre, RS, Brazil
| | - María Fernanda Pomares
- Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET-UNT and Instituto de Química Biológica "Dr. Bernabé Bloj", Facultad de Bioquímica, Química y Farmacia, UNT. Chacabuco 461, San Miguel de Tucumán, Tucumán, Argentina
| | - Enilson Luiz Saccol de Sá
- Departamento de Solos, Faculdade de Agronomia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 7712, Porto Alegre, RS, Brazil
| | - Claudio Pereira
- Tecnano Produtos e Serviços Ltda, Rua Washington Luiz, 675, Porto Alegre, RS, Brazil
| | - Paula Andrea Vincent
- Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET-UNT and Instituto de Química Biológica "Dr. Bernabé Bloj", Facultad de Bioquímica, Química y Farmacia, UNT. Chacabuco 461, San Miguel de Tucumán, Tucumán, Argentina
| |
Collapse
|
34
|
Paredes-Páliz KI, Pajuelo E, Doukkali B, Caviedes MÁ, Rodríguez-Llorente ID, Mateos-Naranjo E. Bacterial inoculants for enhanced seed germination of Spartina densiflora: Implications for restoration of metal polluted areas. Mar Pollut Bull 2016; 110:396-400. [PMID: 27315751 DOI: 10.1016/j.marpolbul.2016.06.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 06/08/2016] [Indexed: 06/06/2023]
Abstract
The design of effective phytoremediation programs is severely hindered by poor seed germination on metal polluted soils. The possibility that inoculation with plant growth promoting rhizobacteria (PGPR) could help overcoming this problem is hypothesized. Our aim was investigating the role of PGPR in Spartina densiflora seed germination on sediments with different physicochemical characteristics and metal pollution degrees. Gram negative Pantoea agglomerans RSO6 and RSO7, and gram positive Bacillus aryabhattai RSO25, together with the consortium of the three strains, were used for independent inoculation experiments. The presence of metals (As, Cu, Pb and Zn) in sediments reduced seed germination by 80%. Inoculation with Bacillus aryabhattai RSO25 or Pantoea agglomerans RSO6 and RSO7 enhanced up to 2.5 fold the germination rate of S. densiflora in polluted sediments regarding non-inoculated controls. Moreover, the germination process was accelerated and the germination period was extended. The consortium did not achieve further improvements in seed germination.
Collapse
Affiliation(s)
- Karina I Paredes-Páliz
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/Profesor García González, 2, 41012 Sevilla, Spain
| | - Eloísa Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/Profesor García González, 2, 41012 Sevilla, Spain
| | - Bouchra Doukkali
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/Profesor García González, 2, 41012 Sevilla, Spain
| | - Miguel Ángel Caviedes
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/Profesor García González, 2, 41012 Sevilla, Spain
| | - Ignacio D Rodríguez-Llorente
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/Profesor García González, 2, 41012 Sevilla, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41012 Sevilla, Spain.
| |
Collapse
|
35
|
Campestre MP, Castagno LN, Estrella MJ, Ruiz OA. Lotus japonicus plants of the Gifu B-129 ecotype subjected to alkaline stress improve their Fe(2+) bio-availability through inoculation with Pantoea eucalypti M91. J Plant Physiol 2016; 192:47-55. [PMID: 26815729 DOI: 10.1016/j.jplph.2016.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 01/05/2016] [Accepted: 01/05/2016] [Indexed: 06/05/2023]
Abstract
Inoculation assays with Pantoea eucalypti M91 were performed on Lotus japonicus ecotype Gifu. Under alkaline conditions, this ecotype is characterized by the development of interveinal chlorosis of the apical leaves due to low mobilization of Fe(2+). Inoculation with P. eucalypti M91, a plant growth-promoting bacterial strain capable of producing pyoverdine-like and pyochelin-like siderophores under alkaline growth conditions, alters the root, resulting in a herringbone pattern of root branching. Additional features include improvement in Fe(2+) transport to the shoots, acidification of the hydroponic solution of the plant cultures, and an accompanying increase in the efficiency of the PSII parameters. In addition, there was an increase in the expression of the FRO1 and IRT1 genes, accompanied by a significant increase in FRO activity. Results showed that P. eucalypti M91 has a beneficial effect on the Fe acquisition machinery of Strategy I, as described for non-graminaceous monocots and dicots, suggesting its potential as an inoculant for legume crops cultivated in alkaline soils.
Collapse
Affiliation(s)
- María Paula Campestre
- Unidad de Biotecnología 1, Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico de Chascomús/Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional de San Martín (IIB-INTECH/CONICET-UNSAM), Avenida Intendente Marino Km 8,2 CC 164, B7130IWA Chascomús, Argentina.
| | - Luis Nazareno Castagno
- Laboratorio de Microbiología del Suelo, Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico de Chascomús/Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional de San Martín (IIB-INTECH/CONICET-UNSAM), Avenida Intendente Marino Km 8,2 CC 164, B7130IWA Chascomús, Argentina.
| | - María Julia Estrella
- Laboratorio de Microbiología del Suelo, Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico de Chascomús/Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional de San Martín (IIB-INTECH/CONICET-UNSAM), Avenida Intendente Marino Km 8,2 CC 164, B7130IWA Chascomús, Argentina.
| | - Oscar Adolfo Ruiz
- Unidad de Biotecnología 1, Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico de Chascomús/Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional de San Martín (IIB-INTECH/CONICET-UNSAM), Avenida Intendente Marino Km 8,2 CC 164, B7130IWA Chascomús, Argentina.
| |
Collapse
|
36
|
Xu JJ, Song P, Feng L, Hong W, Wu CZ, Li GQ, Zhao XJ, Ge HY. [Growth-promoting effect and triptolide production regulation of endophytic bacteria from Tripterygium wilfordii]. Ying Yong Sheng Tai Xue Bao 2014; 25:1681-1687. [PMID: 25223024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A total of twenty-three endophytic bacteria were isolated from Tripterygium wilfordii, among which three strains were selected for further studying based on their capabilities of growth-promotion and wheat germination. All three isolated strains could produce phytohormone and siderophore, and LG3 and LJ10 strains were capable of dissolving phosphorus. Additionally, LG3 and LY4 strains were both proved to have nitrogen-fixing function and 1-aminocyclopropane-1carboxy-late deaminase activity. Bacterial 16S rDNA sequence identification and homology analysis suggested that LG3 and LY4 strains belonged to the Enterobacter and LJ10 belonged to the Pantoea. The results of reinoculation experiment demonstrated that three endophytic bacteria could not only promote the growth of Tripterygium wilfordii, but also improve the triptolide contents of different organs significantly.
Collapse
|
37
|
Cooper WR, Nicholson SJ, Puterka GJ. Potential transmission of Pantoea spp. and Serratia marcescens (Enterobacteriales: Enterobacteriaceae) to plants by Lygus hesperus (Hemiptera: Miridae). J Econ Entomol 2014; 107:63-65. [PMID: 24665685 DOI: 10.1603/ec13056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Lygus hesperus Knight (Hemiptera: Miridae) is a key agricultural pest in the western United States. In a recent study, proteins from Pantoea ananatis and Serratia marcescens (Enterobacteriales: Enterobacteriaceae) were identified in diet that was stylet probed and fed on by L. hesperus adults. P. ananatis and S. marcescens are ubiquitous bacteria that infect a wide range of crops. The objective of our study was to determine whether L. hesperus transfer P. ananatis and S. marcescens to food substrates during stylet-probing activities. Sucrose (5%) was spread under parafilm and exposed to adult L. hesperus for 24 h. Diet similarly prepared but not exposed to insects was used for controls. MacConkey agar was inoculated with stylet-probed or control diets and incubated at 25 degrees C. After 24 h, bacterial colonies were observed on agar that was inoculated with stylet-probed diet, but were not observed on agar inoculated with control diet. Isolated bacterial colonies were putatively identified as either Pantoea spp. or S. marcescens using the API 20e identification kit. These results indicate that L. hesperus is capable of vectoring P. ananatis and S. marcescens.
Collapse
|
38
|
Scheublin TR, Leveau JHJ. Isolation of Arthrobacter species from the phyllosphere and demonstration of their epiphytic fitness. Microbiologyopen 2013; 2:205-13. [PMID: 23355506 PMCID: PMC3584225 DOI: 10.1002/mbo3.59] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 11/12/2012] [Accepted: 11/13/2012] [Indexed: 11/08/2022] Open
Abstract
Bacteria of the genus Arthrobacter are common inhabitants of the soil environment, but can also be recovered from leaf surfaces (the phyllosphere). Using enrichment cultures on 4-chlorophenol, we succeeded in specifically isolating Arthrobacter bacteria from ground cover vegetation in an apple orchard. Based on 16S rRNA gene sequencing, the isolates were found to belong to at least three different species of Arthrobacter. Compared to the model bacterial epiphyte Pantoea agglomerans, the Arthrobacter isolates performed as well or even better in a standardized laboratory test of phyllosphere fitness. A similar performance was observed with the well-characterized soil isolate Arthrobacter chlorophenolicus A6. These findings suggest that the frequently reported presence of Arthrobacter strains on plant foliage can be explained by the capacity to multiply and persist in the phyllosphere environment. As bacteria from the genus Arthrobacter are known for their ability to degrade a wide variety of organic pollutants, their high phyllosphere competency marks them as a promising group for future studies on phyllosphere-based bioremediation, for example, as foliar bioaugmentation on ground cover or buffer-zone vegetation to prevent pesticides from reaching soil, surface-, or groundwater.
Collapse
Affiliation(s)
- Tanja R Scheublin
- Department of Microbial Ecology, Netherlands Institute of Ecology, Droevendaalsesteeg 10, Wageningen, 6708 PB, The Netherlands
| | | |
Collapse
|
39
|
Abstract
A previously healthy 23-month-old girl was admitted for the management of an acute unilateral dacryocystitis following accidental contact with dog faeces. No periocular trauma was reported. Microbiological investigation showed a multiresistant strain of Pantoea species to be the responsible pathogen. The infection responded to a course of oral Clindamycin and Ciprofloxacin, in combination with Chloramphenicol eye drops. This is the first report of an acute dacryocystitis sustained by this microorganism.
Collapse
Affiliation(s)
- Bruno Zuberbuhler
- Manchester Academic Health Science Centre,Manchester Royal Eye Hospital, Oxford Road, Manchester, UK.
| | | | | |
Collapse
|
40
|
Kadowaki T, Inagawa H, Kohchi C, Nishizawa T, Takahashi Y, Soma GI. Anti-lipopolysaccharide factor evokes indirect killing of virulent bacteria in kuruma prawn. In Vivo 2011; 25:741-744. [PMID: 21753127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
AIMS Anti-lipopolysaccharide factor (ALF) is an antimicrobial peptide (AMP) and a key effector molecule of the innate immune system in crustaceans. However, little is known about the role of its indirect killing against bacteria. The possible regulatory role of this peptide (M-ALF) in kuruma prawns, Marsupenaeus japonicus, was investigated. MATERIALS AND METHODS The activities of M-ALF were investigated by antimicrobial activity in vitro and by experimental infection Vibrio penaeicida in vivo with ALF-knock down in kuruma prawn by systemically silencing M-ALF gene through the injection of gene-specific long double-stranded RNA with RNA interference. RESULTS Synthetic M-ALF had no direct antimicrobial activity against V. penaeicida, whereas ALF-silenced kuruma prawns had significantly higher mortality than untreated prawn after V. penaeicida infection. The data provide compelling evidence that M-ALF plays an indirect protective role against V. penaeicida infection, suggesting the idea that ALF acts as a cytokine-like regulatory molecule, as well as an effector molecule. CONCLUSION M-ALF has no direct activity against V. penaeicida, but might be a key molecule in cytokine-like gene regulation in crustaceans.
Collapse
Affiliation(s)
- Takeshi Kadowaki
- Institute for Health Sciences, Tokushima.Bunri University, Nishihama, Yamashiro-cho, Tokushima-shi 770-8514, Japan
| | | | | | | | | | | |
Collapse
|
41
|
Rodrigues ALS, Lima IK, Koury A, de Sousa RM, Meguins LC. Pantoea agglomerans liver abscess in a resident of Brazilian Amazonia. Trop Gastroenterol 2009; 30:154-155. [PMID: 20306748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
|
42
|
Taniguchi Y, Yoshioka N, Nishizawa T, Inagawa H, Kohchi C, Soma GI. Utility and safety of LPS-based fermented flour extract as a macrophage activator. Anticancer Res 2009; 29:859-864. [PMID: 19414320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The immune system is part of the homeostasis system. Our research is focused on ways to maintain health, with an emphasis on the role of macrophages. We have hypothesized that tissue macrophages form a systemic network which we believe contributes to the homeostasis system, and have named it the 'macrophage network.' This network creates a dynamic equilibrium situation where macrophages control homeostasis. Our research is based on this macrophage network theory as we believe that the innate immune system provides the foundation for the homeostasis system. As part of our research, we have demonstrated that macrophage activation can provide protection and therapeutic effects for various diseases. Therefore, we have also focused on lipopolysaccharide (LPS). We proved that the LPS of Pantoea agglomerans (which we have named IP-PA1) was useful in preventing various health disorders and in restoring health when administered via the oral or transdermal route. We also developed a 'fermented flour extract', which consists largely of IP-PA1. For LPS to become a valuable commodity, it is very important to provide assurance about safety (when administered orally or transdermally) to build confidence. For this reason, we tested fermented flour extract (in which the major component was IP-PA1) to confirm that it was safe. The results of these safety trials confirmed that oral and transdermal administration of fermented flour extract was very safe. Thus, we believe that fermented flour extract is a new substance that will have applications in health food, cosmetics, animal feeds, fisheries feeds and drugs industries.
Collapse
Affiliation(s)
- Yoshie Taniguchi
- Institute for Health Science, Tokushima Bunri University, Yamashiro-cho, Tokushima-shi, 770-8514, Japan
| | | | | | | | | | | |
Collapse
|
43
|
Borràs M, Roig J, Garcia M, Fernández E. Adverse effects of pantoea peritonitis on peritoneal transport. Perit Dial Int 2009; 29:234-235. [PMID: 19293363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
|
44
|
Aly NYA, Salmeen HN, Lila RAA, Nagaraja PA. Pantoea agglomerans bloodstream infection in preterm neonates. Med Princ Pract 2008; 17:500-3. [PMID: 18836282 DOI: 10.1159/000151575] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2007] [Accepted: 10/24/2007] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To report an uncommon incidence of sporadic bloodstream infection (BSI) caused by Pantoea agglomerans in preterm neonates. CASE PRESENTATION AND INTERVENTION Fives cases of nosocomial BSI with P. agglomerans in preterm neonates (weight <or=1,500 g; age 8-17 days; gestational age 26-30 weeks) are presented. All cases were late onset neonatal sepsis (>7 days of age). Lethargy, skin mottling and bradycardia were often present. Although there was no evidence of pneumonia, desaturation was a common feature. Thrombocytopenia developed in 4 patients, metabolic acidosis in 2 and jaundice in 2. No bleeding tendency or disseminating intravascular coagulation was recorded. Organisms cultured from blood were identified by the Vitek-2 system (bioMérieux, France) and the findings confirmed by testing the isolate on the API 20E system. All isolates shared in vitro susceptibility to gentamicin, amikacin, ciprofloxacin, piperacillin/tazobactam and meropenem. One patient was treated with a cefotaxime/amikacin combination, 2 with meropenem and the remaining 2 with tazocin. All patients responded well to antibiotic treatment and survived. CONCLUSION P. agglomerans is an unusual pathogen in the etiology of neonatal sepsis. Despite significant clinical deterioration, early detection and proper antibiotic therapy carry a favorable outcome.
Collapse
Affiliation(s)
- Nasser Yehia A Aly
- Department of Tropical Medicine and Hygiene, Faculty of Medicine, University of Alexandria, Alexandria, Egypt.
| | | | | | | |
Collapse
|
45
|
Bachmeyer C, Entressengle H, Gibeault M, Nédellec G, M'Bappé P, Delisle F, Jacquot F, Arlet G, Grateau G, Lionnet F. Bilateral tibial chronic osteomyelitis due to Pantoea agglomerans in a patient with sickle cell disease. Rheumatology (Oxford) 2007; 46:1247. [PMID: 17650525 DOI: 10.1093/rheumatology/kem127] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- C Bachmeyer
- Service de Médecine Interne, CHU Tenon (AP-HP), Paris, France.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Kircheva A, Paskalev D. Fulminant infection of the lower limb in a diabetic patient. J Wound Care 2007; 16:223-4. [PMID: 17552407 DOI: 10.12968/jowc.2007.16.5.27044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- A Kircheva
- Department of Clinical Epidemiology, University Hospital St Anna, Varna, Bulgaria
| | | |
Collapse
|
47
|
Abstract
This case highlights that an acute myositis leading to rhabdomyolysis may occur as a rare complication of hepatic abscess and shows the benefit of early recognition of this possible association. A 70-year-old man presented with fever and lower limb myalgia, with laboratory evidence of acute renal failure secondary to rhabdomyolysis. Blood cultures revealed Pantoea agglomerans, which led to identification of a hepatic abscess on computed tomography scan. Supportive care together with antibiotics led to normalization of renal function and resolution of the abscess. This appears to be the first report of a patient with a liver abscess presenting with myositis and rhabdomyolysis. Early recognition of this possible association is vital to limit morbidity and mortality.
Collapse
|
48
|
|
49
|
Ortmann I, Conrath U, Moerschbacher BM. Exopolysaccharides of Pantoea agglomerans have different priming and eliciting activities in suspension-cultured cells of monocots and dicots. FEBS Lett 2006; 580:4491-4. [PMID: 16860795 DOI: 10.1016/j.febslet.2006.07.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2006] [Revised: 07/07/2006] [Accepted: 07/07/2006] [Indexed: 10/24/2022]
Abstract
Induced disease resistance of plants is often associated with an enhanced capacity to activate cellular defense responses to pathogen attack, named the "primed" state of the plant. Exopolysaccharides of Pantoea agglomerans have recently been reported as the first priming active component of bacterial origin in wheat cells. We now show that Pantoea exopolysaccharides also prime rice cells for better elicitation of a rapid oxidative burst. In contrast, in tobacco and parsley cell cultures Pantoea exopolysaccharides activate the oxidative burst response directly. Our results point to a different recognition and/or mode of action of Pantoea exopolysaccharides in monocot and dicot plants.
Collapse
Affiliation(s)
- Imke Ortmann
- Department of Plant Biochemistry and Biotechnology, Westfälische Wilhelms-Universität Münster, Hindenburgplatz 55, 48143 Münster, Germany
| | | | | |
Collapse
|
50
|
Panknin HT. [An outbreak of fatal pantoea infections in newborn infants, caused by contaminated infusion solutions]. Kinderkrankenschwester 2006; 25:189-90. [PMID: 16736824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
|