1
|
Adra C, Panchalingam H, Foster K, Tomlin R, Hayes RA, Kurtböke Dİ. In vitro biological control of Pyrrhoderma noxium using volatile compounds produced by termite gut-associated streptomycetes. FRONTIERS IN PLANT SCIENCE 2024; 15:1371285. [PMID: 38510434 PMCID: PMC10953824 DOI: 10.3389/fpls.2024.1371285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 02/12/2024] [Indexed: 03/22/2024]
Abstract
Introduction Pyrrhoderma noxium is a plant pathogen that causes economic losses in agricultural and forestry industries, including significant destruction to amenity trees within the city of Brisbane in Australia. Use of chemical control agents are restricted in public areas, there is therefore an urgent need to investigate biological control approaches. Members of the phylum Actinomycetota, commonly known as actinomycetes, are known for their industrially important secondary metabolites including antifungal agents. They have proven to be ideal candidates to produce environmentally friendly compounds including the volatile organic compounds (VOCs) which can be used as biofumigants. Methods Different Streptomyces species (n=15) previously isolated from the guts of termites and stored in the University of the Sunshine Coast'sMicrobial Library were tested for their antifungal VOCs against Pyrrhoderma noxium. Results Fourteen of them were found to display inhibition (39.39-100%) to the mycelial development of the pathogen. Strongest antifungal activity displaying isolates USC-592, USC-595, USC-6910 and USC-6928 against the pathogen were selected for further investigations. Their VOCs were also found to have plant growth promotional activity observed for Arabidopsis thaliana with an increase of root length (22-36%) and shoot length (26-57%). The chlorophyll content of the test plant had a slight increase of 11.8% as well. Identified VOCs included geosmin, 2-methylisoborneol, 2-methylbutyrate, methylene cyclopentane, β-pinene, dimethyl disulfide, ethyl isovalerate, methoxyphenyl-oxime and α-pinene. Additionally, all 15 Streptomyces isolates were found to produce siderophores and indole acetic acid as well as the enzyme chitinase which is known to break down the fungal cell wall. Discussion Findings indicate that termite gut-associated streptomycetes might be used to control Pyrrhoderma noxium by utilizing their wide range of inhibitory mechanisms.
Collapse
Affiliation(s)
- Cherrihan Adra
- School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, QLD, Australia
| | - Harrchun Panchalingam
- School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, QLD, Australia
| | - Keith Foster
- Brisbane City Council, Program, Planning and Integration, Brisbane Square, Brisbane, QLD, Australia
| | - Russell Tomlin
- Brisbane City Council, Program, Planning and Integration, Brisbane Square, Brisbane, QLD, Australia
| | - R. Andrew Hayes
- Forest Industries Research Centre, University of the Sunshine Coast, Sippy Downs, QLD, Australia
| | - D. İpek Kurtböke
- School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, QLD, Australia
| |
Collapse
|
2
|
Zhu XC, Xu SG, Wang YR, Zou MT, Mridha MAU, Javed K, Wang Y. Unveiling the Potential of Bacillus safensis Y246 for Enhanced Suppression of Rhizoctonia solani. J Fungi (Basel) 2023; 9:1085. [PMID: 37998890 PMCID: PMC10672523 DOI: 10.3390/jof9111085] [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: 09/22/2023] [Revised: 10/31/2023] [Accepted: 11/01/2023] [Indexed: 11/25/2023] Open
Abstract
Rhizoctonia solani is a significant pathogen affecting various crops, including tobacco. In this study, a bacterial strain, namely Y246, was isolated from the soil of healthy plants and exhibited high antifungal activity. Based on morphological identification and DNA sequencing, this bacterial strain was identified as Bacillus safensis. The aim of this investigation was to explore the antifungal potential of strain Y246, to test the antifungal stability of Y246 by adjusting different cultivation conditions, and to utilize gas chromatography-mass spectrometry (GC-MS) to predict the volatile compounds related to antifungal activity in Y246. In vitro assays demonstrated that strain Y246 exhibited a high fungal inhibition rate of 76.3%. The fermentation broth and suspension of strain Y246 inhibited the mycelial growth of R. solani by 66.59% and 63.75%, respectively. Interestingly, treatment with volatile compounds derived from the fermentation broth of strain Y246 resulted in abnormal mycelial growth of R. solani. Scanning electron microscopy analysis revealed bent and deformed mycelium structures with a rough surface. Furthermore, the stability of antifungal activity of the fermentation broth of strain Y246 was assessed. Changes in temperature, pH value, and UV irradiation time had minimal impact on the antifungal activity, indicating the stability of the antifungal activity of strain Y246. A GC-MS analysis of the volatile organic compounds (VOCs) produced by strain Y246 identified a total of 34 compounds with inhibitory effects against different fungi. Notably, the strain demonstrated broad-spectrum activity, exhibiting varying degrees of inhibition against seven pathogens (Alternaria alternata, Phomopsis. sp., Gloeosporium musarum, Dwiroopa punicae, Colletotrichum karstii, Botryosphaeria auasmontanum, and Botrytis cinerea). In our extensive experiments, strain Y246 not only exhibited strong inhibition against R. solani but also demonstrated remarkable inhibitory effects on A. alternata-induced tobacco brown spot and kiwifruit black spot, with impressive inhibition rates of 62.96% and 46.23%, respectively. Overall, these findings highlight the significant antifungal activity of B. safensis Y246 against R. solani. In addition, Y246 has an excellent antifungal stability, with an inhibition rate > 30% under different treatments (temperature, pH, UV). The results showed that the VOCs of strain Y246 had a strong inhibitory effect on the colony growth of R. solani, and the volatile substances produced by strain Y246 had an inhibitory effect on R. solani at rate of 70.19%. Based on these results, we can conclude that Y246 inhibits the normal growth of R. solani. These findings can provide valuable insights for developing sustainable agricultural strategies.
Collapse
Affiliation(s)
- Xing-Cheng Zhu
- Department of Plant Pathology, Agriculture College, Guizhou University, Guiyang 550025, China; (X.-C.Z.); (S.-G.X.); (Y.-R.W.); (M.-T.Z.)
| | - Shu-Gang Xu
- Department of Plant Pathology, Agriculture College, Guizhou University, Guiyang 550025, China; (X.-C.Z.); (S.-G.X.); (Y.-R.W.); (M.-T.Z.)
| | - Yu-Ru Wang
- Department of Plant Pathology, Agriculture College, Guizhou University, Guiyang 550025, China; (X.-C.Z.); (S.-G.X.); (Y.-R.W.); (M.-T.Z.)
| | - Meng-Ting Zou
- Department of Plant Pathology, Agriculture College, Guizhou University, Guiyang 550025, China; (X.-C.Z.); (S.-G.X.); (Y.-R.W.); (M.-T.Z.)
| | | | - Khadija Javed
- Department of Plant Pathology, Agriculture College, Guizhou University, Guiyang 550025, China; (X.-C.Z.); (S.-G.X.); (Y.-R.W.); (M.-T.Z.)
- Julius Kühn-Institut (JKI) for Biological Control, 64287 Darmstadt, Germany
| | - Yong Wang
- Department of Plant Pathology, Agriculture College, Guizhou University, Guiyang 550025, China; (X.-C.Z.); (S.-G.X.); (Y.-R.W.); (M.-T.Z.)
| |
Collapse
|
3
|
Wang K, Lin Z, Dou J, Jiang M, Shen N, Feng J. Identification and Surveys of Promoting Plant Growth VOCs from Biocontrol Bacteria Paenibacillus peoriae GXUN15128. Microbiol Spectr 2023; 11:e0434622. [PMID: 36988498 PMCID: PMC10269716 DOI: 10.1128/spectrum.04346-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 02/25/2023] [Indexed: 03/30/2023] Open
Abstract
The role of microbial volatile organic compounds (MVOCs) in promoting plant growth has received much attention. We isolated Paenibacillus peoriae from mangrove rhizosphere soil, which can produce VOCs to promote the growth of Arabidopsis thaliana seedlings, increase the aboveground biomass of A. thaliana, and increase the number of lateral roots of A. thaliana. The effects of different inoculation amounts and different media on the composition of MVOCs were studied by solid-phase microextraction/gas chromatography-mass spectrometry (SPME/GC-MS) and headspace sampler/GC-MS. We found that the growth medium influences the function and composition of MVOCs. To survey the growth-promoting functions, the transcriptome of the receptor A. thaliana was then determined. We also verified the inhibitory effect of the soluble compounds produced by P. peoriae on the growth of 10 pathogenic fungi. The ability of P. peoriae to produce volatile and soluble compounds to promote plant growth and disease resistance has shown great potential for application in the sustainability of agricultural production. IMPORTANCE Microbial volatile organic compounds (MVOCs) have great potential as "gas fertilizers" for agricultural applications, and it is a promising research direction for the utilization of microbial resources. This study is part of the field of interactions between microorganisms and plants. To study the function and application of microorganisms from the perspective of VOCs is helpful to break the bottleneck of traditional microbial application. At present, the study of MVOCs is lacking; there is a lack of functional strains, especially with plant-protective functions and nonpathogenic application value. The significance of this study is that it provides Paenibacillus peoriae, which produces VOCs with plant growth-promoting effects and broad-spectrum antifungal activity against plant-pathogenic fungi. Our study provides a more comprehensive, new VOC component analysis method and explains how MVOCs promote plant growth through transcriptome analysis. This will greatly increase our understanding of MVOC applications as a model for other MVOC research.
Collapse
Affiliation(s)
- Kun Wang
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi Minzu University, Nanning, China
| | - Ziyan Lin
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi Minzu University, Nanning, China
| | - Jin Dou
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi Minzu University, Nanning, China
| | - Mingguo Jiang
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi Minzu University, Nanning, China
| | - Naikun Shen
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi Minzu University, Nanning, China
| | - Jing Feng
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi Minzu University, Nanning, China
| |
Collapse
|
4
|
Parmagnani AS, Kanchiswamy CN, Paponov IA, Bossi S, Malnoy M, Maffei ME. Bacterial Volatiles (mVOC) Emitted by the Phytopathogen Erwinia amylovora Promote Arabidopsis thaliana Growth and Oxidative Stress. Antioxidants (Basel) 2023; 12:antiox12030600. [PMID: 36978848 PMCID: PMC10045578 DOI: 10.3390/antiox12030600] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 02/21/2023] [Accepted: 02/25/2023] [Indexed: 03/04/2023] Open
Abstract
Phytopathogens are well known for their devastating activity that causes worldwide significant crop losses. However, their exploitation for crop welfare is relatively unknown. Here, we show that the microbial volatile organic compound (mVOC) profile of the bacterial phytopathogen, Erwinia amylovora, enhances Arabidopsis thaliana shoot and root growth. GC-MS head-space analyses revealed the presence of typical microbial volatiles, including 1-nonanol and 1-dodecanol. E. amylovora mVOCs triggered early signaling events including plasma transmembrane potential Vm depolarization, cytosolic Ca2+ fluctuation, K+-gated channel activity, and reactive oxygen species (ROS) and nitric oxide (NO) burst from few minutes to 16 h upon exposure. These early events were followed by the modulation of the expression of genes involved in plant growth and defense responses and responsive to phytohormones, including abscisic acid, gibberellin, and auxin (including the efflux carriers PIN1 and PIN3). When tested, synthetic 1-nonanol and 1-dodecanol induced root growth and modulated genes coding for ROS. Our results show that E. amylovora mVOCs affect A. thaliana growth through a cascade of early and late signaling events that involve phytohormones and ROS.
Collapse
Affiliation(s)
- Ambra S. Parmagnani
- Department of Life Sciences and Systems Biology, University of Turin, Via Quarello 15/a, 10135 Turin, Italy
| | | | - Ivan A. Paponov
- Department of Food Science, Aarhus University, 8200 Aarhus, Denmark
| | - Simone Bossi
- Department of Life Sciences and Systems Biology, University of Turin, Via Quarello 15/a, 10135 Turin, Italy
| | - Mickael Malnoy
- Research and Innovation Centre, Edmund Mach Foundation, Via Edmund Mach 1, 38098 San Michele all’Adige, Italy
| | - Massimo E. Maffei
- Department of Life Sciences and Systems Biology, University of Turin, Via Quarello 15/a, 10135 Turin, Italy
- Correspondence: ; Tel.: +39-011-670-5967
| |
Collapse
|
5
|
Sá C, Matos D, Cardoso P, Figueira E. Do Volatiles Affect Bacteria and Plants in the Same Way? Growth and Biochemical Response of Non-Stressed and Cd-Stressed Arabidopsis thaliana and Rhizobium E20-8. Antioxidants (Basel) 2022; 11:2303. [PMID: 36421489 PMCID: PMC9687498 DOI: 10.3390/antiox11112303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/07/2022] [Accepted: 11/15/2022] [Indexed: 09/08/2024] Open
Abstract
Plant roots are colonized by rhizobacteria, and these soil microorganisms can not only stimulate plant growth but also increase tolerance to stress through the production of volatile organic compounds. However, little is known about the effect that these plant beneficial volatiles may have on bacteria. In this study, the effects on growth and oxidative status of different concentrations of three volatiles already reported to have a positive influence on plant growth (2-butanone, 3-methyl-1-butanol, and 2,3-butanediol) were determined in A. thaliana and Rhizobium sp. strain E20-8 via airborne exposure in the presence and absence of Cd. It was expected to ascertain if the plant and the bacterium are influenced in the same way by the volatiles, and if exposure to stress (Cd) shifts the effects of volatiles on plants and bacteria. Results showed the antioxidant activity of the volatiles protecting the plant cell metabolism from Cd toxicity and increasing plant tolerance to Cd. Effects on bacteria were less positive. The two alcohols (3-methyl-1-butanol and 2,3-butanediol) increased Cd toxicity, and the ketone (2-butanone) was able to protect Rhizobium from Cd stress, constituting an alternative way to protect soil bacterial communities from stress. The application of 2-butanone thus emerges as an alternative way to increase crop production and crop resilience to stress in a more sustainable way, either directly or through the enhancement of PGPR activity.
Collapse
Affiliation(s)
- Carina Sá
- Department of Biology, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Diana Matos
- Department of Biology, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Paulo Cardoso
- Department of Biology and CESAM, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Etelvina Figueira
- Department of Biology and CESAM, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| |
Collapse
|
6
|
Pérez-Corral DA, Ornelas-Paz JDJ, Olivas GI, Acosta-Muñiz CH, Salas-Marina MÁ, Berlanga-Reyes DI, Sepulveda DR, Mares-Ponce de León Y, Rios-Velasco C. Growth Promotion of Phaseolus vulgaris and Arabidopsis thaliana Seedlings by Streptomycetes Volatile Compounds. PLANTS (BASEL, SWITZERLAND) 2022; 11:875. [PMID: 35406854 PMCID: PMC9002626 DOI: 10.3390/plants11070875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 03/16/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
Streptomyces are recognized as antipathogenic agents and plant-growth-promoting rhizobacteria. The objective of this study was to evaluate the capacities of four antifungal Streptomyces strains to: produce the substances that are involved in plant growth; solubilize phosphates; and fix nitrogen. The effects of the volatile organic compounds (VOCs) that are emitted by these strains on the growth promotion of Arabidopsis thaliana and Phaseolus vulgaris L. (var. Pinto Saltillo) seedlings were also tested. All of the Streptomyces strains produced indole-3-acetic acid (IAA) (10.0 mg/L to 77.5 mg/L) and solubilized phosphates, but they did not fix nitrogen. In vitro assays showed that the VOCs from Streptomyces increased the shoot fresh weights (89-399%) and the root fresh weights (94-300%) in A. thaliana seedlings; however, these effects were less evident in P. vulgaris. In situ experiments showed that all the Streptomyces strains increased the shoot fresh weight (11.64-43.92%), the shoot length (11.39-29.01%), the root fresh weight (80.11-140.90%), the root length (40.06-59.01%), the hypocotyl diameter (up to 6.35%), and the chlorophyll content (up to 10.0%) in P. vulgaris seedlings. 3-Methyl-2-butanol had the highest effect among the ten pure VOCs on the growth promotion of A. thaliana seedlings. The tested Streptomyces strains favored biomass accumulation in A. thaliana and P. vulgaris seedlings.
Collapse
Affiliation(s)
- Daniel Alonso Pérez-Corral
- Centro de Investigación en Alimentación y Desarrollo A.C., Unidad Cuauhtémoc, Av. Río Conchos, S/N, Parque Industrial, Cd. Cuauhtémoc C.P. 31570, Chihuahua, Mexico; (D.A.P.-C.); (J.d.J.O.-P.); (G.I.O.); (C.H.A.-M.); (D.I.B.-R.); (D.R.S.); (Y.M.-P.d.L.)
| | - José de Jesús Ornelas-Paz
- Centro de Investigación en Alimentación y Desarrollo A.C., Unidad Cuauhtémoc, Av. Río Conchos, S/N, Parque Industrial, Cd. Cuauhtémoc C.P. 31570, Chihuahua, Mexico; (D.A.P.-C.); (J.d.J.O.-P.); (G.I.O.); (C.H.A.-M.); (D.I.B.-R.); (D.R.S.); (Y.M.-P.d.L.)
| | - Guadalupe Isela Olivas
- Centro de Investigación en Alimentación y Desarrollo A.C., Unidad Cuauhtémoc, Av. Río Conchos, S/N, Parque Industrial, Cd. Cuauhtémoc C.P. 31570, Chihuahua, Mexico; (D.A.P.-C.); (J.d.J.O.-P.); (G.I.O.); (C.H.A.-M.); (D.I.B.-R.); (D.R.S.); (Y.M.-P.d.L.)
| | - Carlos Horacio Acosta-Muñiz
- Centro de Investigación en Alimentación y Desarrollo A.C., Unidad Cuauhtémoc, Av. Río Conchos, S/N, Parque Industrial, Cd. Cuauhtémoc C.P. 31570, Chihuahua, Mexico; (D.A.P.-C.); (J.d.J.O.-P.); (G.I.O.); (C.H.A.-M.); (D.I.B.-R.); (D.R.S.); (Y.M.-P.d.L.)
| | - Miguel Ángel Salas-Marina
- División de Ingeniería, Universidad de Ciencias y Artes de Chiapas, Carretera Villacorzo-Ejido Monterrey Km 3.0., Tuxtla Gutiérrez C.P. 30520, Chiapas, Mexico;
| | - David Ignacio Berlanga-Reyes
- Centro de Investigación en Alimentación y Desarrollo A.C., Unidad Cuauhtémoc, Av. Río Conchos, S/N, Parque Industrial, Cd. Cuauhtémoc C.P. 31570, Chihuahua, Mexico; (D.A.P.-C.); (J.d.J.O.-P.); (G.I.O.); (C.H.A.-M.); (D.I.B.-R.); (D.R.S.); (Y.M.-P.d.L.)
| | - David Roberto Sepulveda
- Centro de Investigación en Alimentación y Desarrollo A.C., Unidad Cuauhtémoc, Av. Río Conchos, S/N, Parque Industrial, Cd. Cuauhtémoc C.P. 31570, Chihuahua, Mexico; (D.A.P.-C.); (J.d.J.O.-P.); (G.I.O.); (C.H.A.-M.); (D.I.B.-R.); (D.R.S.); (Y.M.-P.d.L.)
| | - Yericka Mares-Ponce de León
- Centro de Investigación en Alimentación y Desarrollo A.C., Unidad Cuauhtémoc, Av. Río Conchos, S/N, Parque Industrial, Cd. Cuauhtémoc C.P. 31570, Chihuahua, Mexico; (D.A.P.-C.); (J.d.J.O.-P.); (G.I.O.); (C.H.A.-M.); (D.I.B.-R.); (D.R.S.); (Y.M.-P.d.L.)
| | - Claudio Rios-Velasco
- Centro de Investigación en Alimentación y Desarrollo A.C., Unidad Cuauhtémoc, Av. Río Conchos, S/N, Parque Industrial, Cd. Cuauhtémoc C.P. 31570, Chihuahua, Mexico; (D.A.P.-C.); (J.d.J.O.-P.); (G.I.O.); (C.H.A.-M.); (D.I.B.-R.); (D.R.S.); (Y.M.-P.d.L.)
| |
Collapse
|