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Pantoja-Guerra M, Burkett-Cadena M, Cadena J, Dunlap CA, Ramírez CA. Lysinibacillus spp.: an IAA-producing endospore forming-bacteria that promotes plant growth. Antonie Van Leeuwenhoek 2023:10.1007/s10482-023-01828-x. [PMID: 37138159 DOI: 10.1007/s10482-023-01828-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 03/29/2023] [Indexed: 05/05/2023]
Abstract
Lysinibacillus is a bacterial genus that has generated recent interest for its biotechnological potential in agriculture. Strains belonging to this group are recognized for their mosquitocidal and bioremediation activity. However, in recent years some reports indicate its importance as plant growth promoting rhizobacteria (PGPR). This research sought to provide evidence of the PGP activity of Lysinibacillus spp. and the role of the indole-3-acetic acid (IAA) production associated with this activity. Twelve Lysinibacillus spp. strains were evaluated under greenhouse conditions, six of which increased the biomass and root architecture of corn plants. In most cases, growth stimulation was evident at 108 CFU/mL inoculum concentration. All strains produced IAA with high variation between them (20-70 µg/mL). The bioinformatic identification of predicted genes associated with IAA production allowed the detection of the indole pyruvic acid pathway to synthesize IAA in all strains; additionally, genes for a tryptamine pathway were detected in two strains. Extracellular filtrates from all strain's cultures increased the corn coleoptile length in an IAA-similar concentration pattern, which demonstrates the filtrates had an auxin-like effect on plant tissue. Five of the six strains that previously showed PGPR activity in corn also promoted the growth of Arabidopsis thaliana (col 0). These strains induced changes in root architecture of Arabidopsis mutant plants (aux1-7/axr4-2), the partial reversion of mutant phenotype indicated the role of IAA on plant growth. This work provided solid evidence of the association of Lysinibacillus spp. IAA production with their PGP activity, which constitutes a new approach for this genus. These elements contribute to the biotechnological exploration of this bacterial genus for agricultural biotechnology.
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Affiliation(s)
- Manuel Pantoja-Guerra
- Universidad de Antioquia, Instituto de Biología, Medellín, Colombia.
- Facultad de Ciencias Agropecuarias, Unilasallista Corporación Universitaria, Caldas - Antioquia, Colombia.
| | | | | | - Christopher A Dunlap
- United States Department of Agriculture, Agricultural Research Service, National Center for Agricultural Utilization Research, Crop Bioprotection Research Unit, 1815 N University, Peoria, IL, USA
| | - Camilo A Ramírez
- Universidad de Antioquia, Instituto de Biología, Medellín, Colombia
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2
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Barbaccia P, Gaglio R, Dazzi C, Miceli C, Bella P, Lo Papa G, Settanni L. Plant Growth-Promoting Activities of Bacteria Isolated from an Anthropogenic Soil Located in Agrigento Province. Microorganisms 2022; 10:2167. [PMID: 36363759 PMCID: PMC9695372 DOI: 10.3390/microorganisms10112167] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 10/26/2022] [Accepted: 10/29/2022] [Indexed: 11/26/2023] Open
Abstract
Bacteria producers of plant growth-promoting (PGP) substances are responsible for the enhancement of plant development through several mechanisms. The purpose of the present work was to evaluate the PGP traits of 63 bacterial strains that were isolated from an anthropogenic soil, and obtained by modification of vertisols in the Sicily region (Italy) seven years after creation. The microorganisms were tested for the following PGP characteristics: indole acetic acid (IAA), NH3, HCN and siderophore production, 1-aminocyclopropane-1-carboxylate deaminase activity (ACC) and phosphate solubilization. The results of principal component analysis (PCA) showed that Bacillus tequilensis SI 319, Brevibacterium frigoritolerans SI 433, Pseudomonas lini SI 287 and Pseudomonas frederiksbergensis SI 307 expressed high levels of IAA and production of ACC deaminase enzyme, while for the rest of traits analyzed the best performances were registered with Pseudomonas genus, in particular for the strains Pseudomonas atacamensis SI 443, Pseudomonas reinekei SI 441 and Pseudomonas granadensis SI 422 and SI 450. The in vitro screening provided enough evidence for future in vivo growth promotion tests of these eight strains.
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Affiliation(s)
- Pietro Barbaccia
- Dipartimento Scienze Agrarie, Alimentari e Forestali, Università Degli Studi di Palermo, 90128 Palermo, Italy
| | - Raimondo Gaglio
- Dipartimento Scienze Agrarie, Alimentari e Forestali, Università Degli Studi di Palermo, 90128 Palermo, Italy
| | - Carmelo Dazzi
- Dipartimento Scienze Agrarie, Alimentari e Forestali, Università Degli Studi di Palermo, 90128 Palermo, Italy
| | - Claudia Miceli
- Council for Agricultural Research and Economics, Plant Protection and Certification Centre, 90121 Palermo, Italy
| | - Patrizia Bella
- Dipartimento Scienze Agrarie, Alimentari e Forestali, Università Degli Studi di Palermo, 90128 Palermo, Italy
| | - Giuseppe Lo Papa
- Dipartimento Scienze Agrarie, Alimentari e Forestali, Università Degli Studi di Palermo, 90128 Palermo, Italy
| | - Luca Settanni
- Dipartimento Scienze Agrarie, Alimentari e Forestali, Università Degli Studi di Palermo, 90128 Palermo, Italy
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3
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Zhang K, Wang L, Si H, Guo H, Liu J, Jia J, Su Q, Wang Y, Zang J, Xing J, Dong J. Maize stalk rot caused by Fusarium graminearum alters soil microbial composition and is directly inhibited by Bacillus siamensis isolated from rhizosphere soil. Front Microbiol 2022; 13:986401. [PMID: 36338067 PMCID: PMC9630747 DOI: 10.3389/fmicb.2022.986401] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 10/03/2022] [Indexed: 11/21/2022] Open
Abstract
Maize stalk rot caused by Fusarium graminearum can reduce the yield of maize and efficiency of mechanized harvesting. Besides, deoxynivalenol and zearalenone toxins produced by F. graminearum can also affect domestic animals and human health. As chemical fungicides are expensive and exert negative effects on the environment, the use of biological control agents has become attractive in recent years. In the present study, we collected rhizosphere soil with severe stalk rot disease (ZDD), the rhizosphere soil with disease-free near by the ZDD (ZDH), and measured rhizosphere microbial diversity and microbial taxonomic composition by amplicon sequencing targeting either bacteria or fungi. The results showed that Fusarium stalk rot caused by the Fusarium species among which F. graminearum is frequent and can reduce the abundance and alpha diversity of rhizosphere microbial community, and shift the beta diversity of microorganisms. Furthermore, a bacterial strain, Bacillus siamensis GL-02, isolated from ZDD, was found to significantly affect growth of F. graminearum. In vitro and in vivo assays demonstrated that B. siamensis GL-02 had good capability to inhibit F. graminearum. These results revealed that B. siamensis GL-02 could be a potential biocontrol agent for the control of maize stalk rot.
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Affiliation(s)
- Kang Zhang
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
| | - Liming Wang
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
| | - Helong Si
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
| | - Hao Guo
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
| | - Jianhu Liu
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
| | - Jiao Jia
- Institute of Plant Protection, Jilin Academy of Agricultural Sciences, Gongzhuling, China
| | - Qianfu Su
- Institute of Plant Protection, Jilin Academy of Agricultural Sciences, Gongzhuling, China
| | - Yanbo Wang
- Maize Research Institute, Liaoning Academy of Agricultural Sciences, Shenyang, China
| | - Jinping Zang
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
| | - Jihong Xing
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
- *Correspondence: Jihong Xing,
| | - Jingao Dong
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
- Jingao Dong,
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Orozco-Mosqueda MDC, Fadiji AE, Babalola OO, Glick BR, Santoyo G. Rhizobiome engineering: Unveiling complex rhizosphere interactions to enhance plant growth and health. Microbiol Res 2022; 263:127137. [PMID: 35905581 DOI: 10.1016/j.micres.2022.127137] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 06/17/2022] [Accepted: 07/13/2022] [Indexed: 12/13/2022]
Abstract
Crop plants are affected by a series of inhibitory environmental and biotic factors that decrease their growth and production. To counteract these adverse effects, plants work together with the microorganisms that inhabit their rhizosphere, which is part of the soil influenced by root exudates. The rhizosphere is a microecosystem where a series of complex interactions takes place between the resident microorganisms (rhizobiome) and plant roots. Therefore, this study analyzes the dynamics of plant-rhizobiome communication, the role of exudates (diffusible and volatile) as a factor in stimulating a diverse rhizobiome, and the differences between rhizobiomes of domesticated crops and wild plants. The study also analyzes different strategies to decipher the rhizobiome through both classical cultivation techniques and the so-called "omics" sciences. In addition, the rhizosphere engineering concept and the two general strategies to manipulate the rhizobiome, i.e., top down and bottom up engineering have been revisited. In addition, recent studies on the effects on the indigenous rhizobiome of inoculating plants with foreign strains, the impact on the endobiome, and the collateral effects on plant crops are discussed. Finally, understanding of the complex rhizosphere interactions and the biological repercussions of rhizobiome engineering as essential steps for improving plant growth and health is proposed, including under adverse conditions.
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Affiliation(s)
| | - Ayomide Emmanuel Fadiji
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa
| | - Olubukola Oluranti Babalola
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa
| | - Bernard R Glick
- Department of Biology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Gustavo Santoyo
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mich 58030, Mexico.
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Romero-Cortes T, Tamayo-Rivera L, Morales-Ovando MA, Aparicio Burgos JE, Pérez España VH, Peralta-Gil M, Cuervo-Parra JA. Growth and Yield of Purple Kculli Corn Plants under Different Fertilization Schemes. J Fungi (Basel) 2022; 8:jof8050433. [PMID: 35628689 PMCID: PMC9146194 DOI: 10.3390/jof8050433] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/08/2022] [Accepted: 04/21/2022] [Indexed: 02/04/2023] Open
Abstract
Globally, corn is the most economically important crop, surpassing other cereals of economic importance. However, the tillage methods, monoculture and the abuse of synthetic agrochemicals used in Mexico have led to the loss of fertility and soil yield. In this sense, the application of alternative fertilization methods based on chemical fertilizer, organic matter and biofertilizer, applied alone or in combination, can stimulate the defense systems of corn plants and increase their yield. Therefore, in this research, some fertilization schemes were tested on purple corn plants of the Kculli race through the evaluation of some growth and yield variables, as well as the subsequent evaluation of the chemical characteristics of the corn grain produced in each fertilization scheme. The results indicate highly significant differences (p ≤ 0.05) between treatments, for the different growth and yield variables studied. Of all the fertilization schemes evaluated, treatment T7 obtained the best grain yield of 6.19 ± 0.07 t ha−1, with respect to treatment T1 of 1.02 ± 0.01 t ha−1, as well as the highest protein content and starch quality. Being clear the positive effect of the adequate contribution of the macro and micronutrients used exerts on the corn crop in each of the fertilization schemes studied. On the other hand, the analysis carried out on the grains was found within the values reported by other authors.
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Affiliation(s)
- Teresa Romero-Cortes
- Escuela Superior de Apan, Universidad Autónoma del Estado de Hidalgo, Carretera Apan-Calpulalpan, Chimalpa Tlalayote, Apan 43900, Hidalgo, Mexico; (T.R.-C.); (L.T.-R.); (J.E.A.B.); (V.H.P.E.); (M.P.-G.)
| | - Lis Tamayo-Rivera
- Escuela Superior de Apan, Universidad Autónoma del Estado de Hidalgo, Carretera Apan-Calpulalpan, Chimalpa Tlalayote, Apan 43900, Hidalgo, Mexico; (T.R.-C.); (L.T.-R.); (J.E.A.B.); (V.H.P.E.); (M.P.-G.)
| | - Mario A. Morales-Ovando
- Sede Acapetahua, Universidad de Ciencias y Artes de Chiapas, Calle Central Norte s/n Entre 4ª y 5ª Norte, Acapetahua 30580, Chiapas, Mexico;
| | - José E. Aparicio Burgos
- Escuela Superior de Apan, Universidad Autónoma del Estado de Hidalgo, Carretera Apan-Calpulalpan, Chimalpa Tlalayote, Apan 43900, Hidalgo, Mexico; (T.R.-C.); (L.T.-R.); (J.E.A.B.); (V.H.P.E.); (M.P.-G.)
| | - Victor H. Pérez España
- Escuela Superior de Apan, Universidad Autónoma del Estado de Hidalgo, Carretera Apan-Calpulalpan, Chimalpa Tlalayote, Apan 43900, Hidalgo, Mexico; (T.R.-C.); (L.T.-R.); (J.E.A.B.); (V.H.P.E.); (M.P.-G.)
| | - Martin Peralta-Gil
- Escuela Superior de Apan, Universidad Autónoma del Estado de Hidalgo, Carretera Apan-Calpulalpan, Chimalpa Tlalayote, Apan 43900, Hidalgo, Mexico; (T.R.-C.); (L.T.-R.); (J.E.A.B.); (V.H.P.E.); (M.P.-G.)
| | - Jaime A. Cuervo-Parra
- Escuela Superior de Apan, Universidad Autónoma del Estado de Hidalgo, Carretera Apan-Calpulalpan, Chimalpa Tlalayote, Apan 43900, Hidalgo, Mexico; (T.R.-C.); (L.T.-R.); (J.E.A.B.); (V.H.P.E.); (M.P.-G.)
- Correspondence: ; Tel.: +52-771-717-2000 (ext. 5805)
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6
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Marian M, Licciardello G, Vicelli B, Pertot I, Perazzolli M. Ecology and potential functions of plant-associated microbial communities in cold environments. FEMS Microbiol Ecol 2022; 98:fiab161. [PMID: 34910139 PMCID: PMC8769928 DOI: 10.1093/femsec/fiab161] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 12/13/2021] [Indexed: 11/13/2022] Open
Abstract
Complex microbial communities are associated with plants and can improve their resilience under harsh environmental conditions. In particular, plants and their associated communities have developed complex adaptation strategies against cold stress. Although changes in plant-associated microbial community structure have been analysed in different cold regions, scarce information is available on possible common taxonomic and functional features of microbial communities across cold environments. In this review, we discuss recent advances in taxonomic and functional characterization of plant-associated microbial communities in three main cold regions, such as alpine, Arctic and Antarctica environments. Culture-independent and culture-dependent approaches are analysed, in order to highlight the main factors affecting the taxonomic structure of plant-associated communities in cold environments. Moreover, biotechnological applications of plant-associated microorganisms from cold environments are proposed for agriculture, industry and medicine, according to biological functions and cold adaptation strategies of bacteria and fungi. Although further functional studies may improve our knowledge, the existing literature suggest that plants growing in cold environments harbor complex, host-specific and cold-adapted microbial communities, which may play key functional roles in plant growth and survival under cold conditions.
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Affiliation(s)
- Malek Marian
- Center Agriculture Food Environment (C3A), University of Trento, via E. Mach 1, 38098 San Michele all'Adige, Italy
- Research and Innovation Centre, Fondazione Edmund Mach, via E. Mach 1, 38098 San Michele all'Adige, Italy
| | - Giorgio Licciardello
- Center Agriculture Food Environment (C3A), University of Trento, via E. Mach 1, 38098 San Michele all'Adige, Italy
- Research and Innovation Centre, Fondazione Edmund Mach, via E. Mach 1, 38098 San Michele all'Adige, Italy
| | - Bianca Vicelli
- Center Agriculture Food Environment (C3A), University of Trento, via E. Mach 1, 38098 San Michele all'Adige, Italy
- Research and Innovation Centre, Fondazione Edmund Mach, via E. Mach 1, 38098 San Michele all'Adige, Italy
| | - Ilaria Pertot
- Center Agriculture Food Environment (C3A), University of Trento, via E. Mach 1, 38098 San Michele all'Adige, Italy
- Research and Innovation Centre, Fondazione Edmund Mach, via E. Mach 1, 38098 San Michele all'Adige, Italy
| | - Michele Perazzolli
- Center Agriculture Food Environment (C3A), University of Trento, via E. Mach 1, 38098 San Michele all'Adige, Italy
- Research and Innovation Centre, Fondazione Edmund Mach, via E. Mach 1, 38098 San Michele all'Adige, Italy
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7
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Schmidt CS, Mrnka L, Lovecká P, Frantík T, Fenclová M, Demnerová K, Vosátka M. Bacterial and fungal endophyte communities in healthy and diseased oilseed rape and their potential for biocontrol of Sclerotinia and Phoma disease. Sci Rep 2021; 11:3810. [PMID: 33589671 PMCID: PMC7884388 DOI: 10.1038/s41598-021-81937-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 12/23/2020] [Indexed: 11/09/2022] Open
Abstract
Phoma stem canker (caused by the ascomycetes Leptosphaeria maculans and Leptosphaeria biglobosa) is an important disease of oilseed rape. Its effect on endophyte communities in roots and shoots and the potential of endophytes to promote growth and control diseases of oilseed rape (OSR) was investigated. Phoma stem canker had a large effect especially on fungal but also on bacterial endophyte communities. Dominant bacterial genera were Pseudomonas, followed by Enterobacter, Serratia, Stenotrophomonas, Bacillus and Staphylococcus. Achromobacter, Pectobacter and Sphingobacterium were isolated only from diseased plants, though in very small numbers. The fungal genera Cladosporium, Botrytis and Torula were dominant in healthy plants whereas Alternaria, Fusarium and Basidiomycetes (Vishniacozyma, Holtermaniella, Bjerkandera/Thanatephorus) occurred exclusively in diseased plants. Remarkably, Leptosphaeria biglobosa could be isolated in large numbers from shoots of both healthy and diseased plants. Plant growth promoting properties (antioxidative activity, P-solubilisation, production of phytohormones and siderophores) were widespread in OSR endophytes. Although none of the tested bacterial endophytes (Achromobacter, Enterobacter, Pseudomonas, Serratia and Stenotrophomonas) promoted growth of oilseed rape under P-limiting conditions or controlled Phoma disease on oilseed rape cotyledons, they significantly reduced incidence of Sclerotinia disease. In the field, a combined inoculum consisting of Achromobacter piechaudii, two pseudomonads and Stenotrophomonas rhizophila tendencially increased OSR yield and reduced Phoma stem canker.
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Affiliation(s)
- C S Schmidt
- Department of Mycorrhizal Symbioses, Institute of Botany, Czech Academy of Sciences, Lesní 322, 25243, Průhonice, Czech Republic
| | - L Mrnka
- Department of Mycorrhizal Symbioses, Institute of Botany, Czech Academy of Sciences, Lesní 322, 25243, Průhonice, Czech Republic.
| | - P Lovecká
- University of Chemistry and Technology, Technická 5, 166 28, Prague 6-Dejvice, Czech Republic
| | - T Frantík
- Department of Mycorrhizal Symbioses, Institute of Botany, Czech Academy of Sciences, Lesní 322, 25243, Průhonice, Czech Republic
| | - M Fenclová
- University of Chemistry and Technology, Technická 5, 166 28, Prague 6-Dejvice, Czech Republic
| | - K Demnerová
- University of Chemistry and Technology, Technická 5, 166 28, Prague 6-Dejvice, Czech Republic
| | - M Vosátka
- Department of Mycorrhizal Symbioses, Institute of Botany, Czech Academy of Sciences, Lesní 322, 25243, Průhonice, Czech Republic
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Márquez R, Blanco EL, Aranguren Y. Bacillus strain selection with plant growth-promoting mechanisms as potential elicitors of systemic resistance to gray mold in pepper plants. Saudi J Biol Sci 2020; 27:1913-1922. [PMID: 32714014 PMCID: PMC7376110 DOI: 10.1016/j.sjbs.2020.06.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 06/05/2020] [Accepted: 06/06/2020] [Indexed: 12/15/2022] Open
Abstract
Bacillus licheniformis induced resistance against gray mold in pepper plants. Bacillus licheniformis and Bacillus pumilus inhibited the growth of Botrytis cinerea and Fusarium solani. Plant growth promoting mechanisms were confirmed by isolated Bacillus strains.
Certain soil bacteria produce beneficial effects on the growth and health of plants; hence, their use is steadily increasing. Five strains of Bacillus with plant growth-promoting potential were selected in this study, which produced indole-3-acetic acid levels below 50 µg.mL−1. On the other hand, while only strains M8 and M15 dissolved phosphorus, the latter was the only strain that did not produce siderophores. Only strains M8 and M16 significantly inhibited the in vitro growth of Botrytis cinerea and Fusarium solani phytopathogens, whose inhibition ranges fluctuated between 60% and 63% for strains M8 and M16 against B. cinerea and between 40% and 53% for strains M8 and M16 against F. solani. Based on these results, the need to implement resistance induction against gray mold on pepper plants was determined using strains M8 and M16. In this case, strain M16 inhibited the propagation of the necrotic spot by approximately 70%, whereas strain M8 significantly reduced the superoxide dismutase activity in systemic leaves, which substantially increased in plants inoculated with strain M8 and infected with the pathogen. Accordingly, the use of native rhizobacteria may entail biotechnological progress for the integrated management of crops in agriculture industry.
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Affiliation(s)
- Robert Márquez
- Laboratorio de Fitobiotecnología, Departamento de Biología, Facultad de Ciencias, Universidad de Los Andes, Mérida, Venezuela.,Laboratorio de Investigación en Biotecnología y Química de Polímeros, Decanato de Investigación, Universidad Nacional Experimental del Táchira, San Cristóbal, Venezuela.,Laboratorio de Fisiología Molecular de Plantas, Departamento de Biología, Universidade Federal de Lavras, Lavras, Brazil
| | - Erika Lorena Blanco
- Laboratorio de Fitobiotecnología, Departamento de Biología, Facultad de Ciencias, Universidad de Los Andes, Mérida, Venezuela.,Laboratorio de Investigación en Biotecnología y Química de Polímeros, Decanato de Investigación, Universidad Nacional Experimental del Táchira, San Cristóbal, Venezuela
| | - Yani Aranguren
- Laboratorio de Investigación en Microbiología, Facultad de Ciencias Básicas y Biomédicas, Universidad Simón Bolívar, Barranquilla, Colombia
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9
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Zhang Y, Ren J, Wang W, Chen B, Li E, Chen S. Siderophore and indolic acid production by Paenibacillus triticisoli BJ-18 and their plant growth-promoting and antimicrobe abilities. PeerJ 2020; 8:e9403. [PMID: 32742769 PMCID: PMC7367057 DOI: 10.7717/peerj.9403] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 06/01/2020] [Indexed: 12/22/2022] Open
Abstract
Paenibacillus triticisoli BJ-18, a N2-fixing bacterium, is able to promote plant growth, but the secondary metabolites that may play a role in promoting plant growth have never been characterized. In this study, untargeted metabolomics profiling of P. triticisoli BJ-18 indicated the existence of 101 known compounds, including N2-acetyl ornithine, which is the precursor of siderophores, plant growth regulators such as trehalose 6-phosphate, betaine and trigonelline, and other bioactive molecules such as oxymatrine, diosmetin, luotonin A, (-)-caryophyllene oxide and tetrahydrocurcumin. In addition, six compounds were also isolated from P. triticisoli BJ-18 using a combination of silica gel chromatography, sephadex LH-20, octadecyl silane (ODS), and high-performance liquid chromatography (HPLC). The compound structures were further analyzed by Nuclear Magnetic Resonance (NMR), Mass Spectrometry (MS), and Electronic Circular Dichroism (ECD). The six compounds included three classical siderophore fusarinines identified as deshydroxylferritriacetylfusigen, desferritriacetylfusigen, and triacetylfusigen, and three indolic acids identified as paenibacillic acid A, 3-indoleacetic acid (IAA), and 3-indolepropionic acid (IPA). Both deshydroxylferritriacetylfusigen and paenibacillic acid A have new structures. Fusarinines, which normally occur in fungi, were isolated from bacterium for the first time in this study. Both siderophores (compounds 1 and 2) showed antimicrobial activity against Escherichia coli, Staphylococcus aureus and Bacillus subtilis, but did not show obvious inhibitory activity against yeast Candida albicans, whereas triacetylfusigen (compound 3) showed no antibiosis activity against these test microorganisms. Paenibacillic acid A, IAA, and IPA were shown to promote the growth of plant shoots and roots, and paenibacillic acid A also showed antimicrobial activity against S. aureus. Our study demonstrates that siderophores and indolic acids may play an important role in plant growth promotion by P. triticisoli BJ-18.
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Affiliation(s)
- Yunzhi Zhang
- State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, People’s Republic of China
| | - Jinwei Ren
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Wenzhao Wang
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Baosong Chen
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Erwei Li
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Sanfeng Chen
- State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, People’s Republic of China
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Pandey A, Yarzábal LA. Bioprospecting cold-adapted plant growth promoting microorganisms from mountain environments. Appl Microbiol Biotechnol 2018; 103:643-657. [PMID: 30465306 DOI: 10.1007/s00253-018-9515-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 11/06/2018] [Accepted: 11/09/2018] [Indexed: 10/27/2022]
Abstract
Mountain soils are challenging environments for all kinds of living things, including plants and microorganisms. Many cold-adapted microorganisms colonizing these extreme soils play important roles as promoters of plant growth and development; for that reason, they are called collectively plant growth-promoting microorganisms (PGPM). Even though there is seldom doubt concerning the usefulness of PGPM to develop eco-friendly bioinoculants, including biofertilizers and biocontrollers, a series of aspects need to be addressed in order to make this technology field-applicable. Among these aspects, the ecological and rhizosphere competences of PGPM are of paramount importance, particularly when considering the development of bioinoculants, well suited for the intensification of mountainous agricultural production. Studies on native, cold-adapted PGPM conducted in the Indian Himalayan region (IHR) and the Tropical Andes (TA) lead nowadays the research in this field. Noticeably, some common themes are emerging. For instance, soils in these mountain environments are colonized by many cold-adapted PGPM able to mobilize soil nutrients and to inhibit growth of plant pathogens. Studies aimed at deeply characterizing the abilities of such PGPM is likely to substantially contribute towards a better crop productivity in mountainous environments. The present review focuses on the importance of this microbial resource to improve crop productivity in IHR and TA. We also present a number of successful examples, which emphasize the effectiveness of some bioinoculants-developed from naturally occurring PGPM-when applied in the field.
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Affiliation(s)
- Anita Pandey
- Centre for Environmental Assessment and Climate Change, G.B. Pant National Institute of Himalayan Environment and Sustainable Development, Kosi-Katarmal, Almora, Uttarakhand, 263643, India.
| | - Luis Andrés Yarzábal
- Unidad de Salud y Bienestar, Universidad Católica de Cuenca, Av. Las Américas y Humboldt, Cuenca, Ecuador.,Departamento de Biología, Facultad de Ciencias, Universidad de Los Andes, Av. Alberto Carnevalli, Mérida, Venezuela
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