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Tsavkelova EA, Volynchikova EA, Potekhina NV, Lavrov KV, Avtukh AN. Auxin production and plant growth promotion by Microbacterium albopurpureum sp. nov. from the rhizoplane of leafless Chiloschista parishii Seidenf. orchid. FRONTIERS IN PLANT SCIENCE 2024; 15:1360828. [PMID: 38559760 PMCID: PMC10978784 DOI: 10.3389/fpls.2024.1360828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Accepted: 02/14/2024] [Indexed: 04/04/2024]
Abstract
The strains of the genus Microbacterium, with more than 150 species, inhabit diverse environments; plant-associated bacteria reveal their plant growth-promoting activities due to a number of beneficial characteristics. Through the performance of diverse techniques and methods, including isolation of a novel Microbacterium strain from the aerial roots of leafless epiphytic orchid, Chiloschista parishii Seidenf., its morphological and biochemical characterization, chemotaxonomy, phylogenetic and genome analysis, as well as bioassays and estimation of its auxin production capacity, a novel strain of ET2T is described. Despite that it shared 16S rRNA gene sequence similarity of 99.79% with Microbacterium kunmingense JXJ CY 27-2T, so they formed a monophyletic group on phylogenetic trees, the two strains showed clear divergence of their genome sequences. The average nucleotide identity (ANI), average amino acid identity (AAI) and digital DNA-DNA hybridization (dDDH) values of ET2T differed greatly from phylogenetically close JXJ CY 27-2T. Based on the differences being below the threshold for species similarity, together with the unique chemotaxonomic characteristics, strain ET2T represents a novel species of the genus Microbacterium. Several genes, putatively involved in auxin biosynthesis were predicted. This strain revealed obvious plant growth-promoting activities, including diazotrophy and biosynthesis of tryptophan-dependent auxins (indole-3-acetic and indole-3-pyruvic acids). Microbial auxins directly stimulated the rhizogenesis, so that the ET2T-inoculated seeds of wheat, cucumber and garden cress showed evident promotion in their growth and development, both under optimal and under cold stress conditions. Based on phenotypic, chemotypic and genotypic evidences, the strain ET2T belongs to the genus Microbacterium, order Micrococcales, class Actinomycetes, and it represents a novel species, for which the name Microbacterium albopurpureum sp. nov. is proposed, with strain ET2T (VKPM Ac-2212, VKM Ас-2998) as the type strain.
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Affiliation(s)
- Elena A. Tsavkelova
- Department of Biology, Shenzhen Moscow State University and Beijing Institute of Technology (MSU-BIT) University, Shenzhen, Guangdong, China
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | | | | | - Konstantin V. Lavrov
- Genomic Center of National Research Centre (NRC) “Kurchatov Institute”, Moscow, Russia
| | - Alexander N. Avtukh
- Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Scientific Center for Biological Research, Russian Academy of Sciences, Pushchino, Russia
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Volynchikova EA, Khrenova MG, Panova TV, Rodin VA, Zvereva MI, Tsavkelova EA. Complete genome sequence of new Microbacterium sp. strain ET2, isolated from roots of leafless orchid. Microbiol Resour Announc 2024; 13:e0089923. [PMID: 38385669 DOI: 10.1128/mra.00899-23] [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: 09/23/2023] [Accepted: 02/05/2024] [Indexed: 02/23/2024] Open
Abstract
Whole-genome sequence of ET2 strain, isolated from the roots of leafless orchid, constitutes a single circular chromosome of 3,604,840 bp (69.44% G + C content). BLAST+-based average nucleotide identity (ANIb) and digital DNA-DNA hybridization values indicate that ET2 may be a novel Microbacterium species. Genes putatively involved in plant-microbial interactions were predicted.
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Affiliation(s)
| | - Maria G Khrenova
- Faculty of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Tatiana V Panova
- Faculty of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Vladimir A Rodin
- Faculty of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Maria I Zvereva
- Faculty of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Elena A Tsavkelova
- Faculty of Biology, M.V. Lomonosov Moscow State University, Moscow, Russia
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Chiang CY, Chang CH, Tseng TY, Nguyen VAT, Su PY, Truong TTT, Chen JY, Huang CC, Huang HJ. Volatile Compounds Emitted by Plant Growth-Promoting Fungus Tolypocladium inflatum GT22 Alleviate Copper and Pathogen Stress. PLANT & CELL PHYSIOLOGY 2024; 65:199-215. [PMID: 37951591 DOI: 10.1093/pcp/pcad120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/17/2023] [Accepted: 10/06/2023] [Indexed: 11/14/2023]
Abstract
Previous studies on the intricate interactions between plants and microorganisms have revealed that fungal volatile compounds (VCs) can affect plant growth and development. However, the precise mechanisms underlying these actions remain to be delineated. In this study, we discovered that VCs from the soilborne fungus Tolypocladium inflatum GT22 enhance the growth of Arabidopsis. Remarkably, priming Arabidopsis with GT22 VCs caused the plant to display an enhanced immune response and mitigated the detrimental effects of both pathogenic infections and copper stress. Transcriptomic analyses of Arabidopsis seedlings treated with GT22 VCs for 3, 24 and 48 h revealed that 90, 83 and 137 genes were differentially expressed, respectively. The responsive genes are known to be involved in growth, hormone regulation, defense mechanisms and signaling pathways. Furthermore, we observed the induction of genes related to innate immunity, hypoxia, salicylic acid biosynthesis and camalexin biosynthesis by GT22 VCs. Among the VCs emitted by GT22, exposure of Arabidopsis seedlings to limonene promoted plant growth and attenuated copper stress. Thus, limonene appears to be a key mediator of the interaction between GT22 and plants. Overall, our findings provide evidence that fungal VCs can promote plant growth and enhance both biotic and abiotic tolerance. As such, our study suggests that exposure of seedlings to T. inflatum GT22 VCs may be a means of improving crop productivity. This study describes a beneficial interaction between T. inflatun GT22 and Arabidopsis. Our investigation of microorganism function in terms of VC activities allowed us to overcome the limitations of traditional microbial application methods. The importance of this study lies in the discovery of T. inflatun GT22 as a beneficial microorganism. This soilborne fungus emits VCs with plant growth-promoting effects and the ability to alleviate both copper and pathogenic stress. Furthermore, our study offers a valuable approach to tracking the activities of fungal VC components via transcriptomic analysis and sheds light on the mechanisms through which VCs promote plant growth and induce resistance. This research significantly advances our knowledge of VC applications and provides an example for further investigations within this field.
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Affiliation(s)
- Chih-Yun Chiang
- Department of Life Sciences, National Cheng Kung University, No. 1, University Road, Tainan City 701, Taiwan, R.O.C
| | - Ching-Han Chang
- Graduate Program in Translational Agricultural Sciences, National Cheng Kung University and Academia Sinica, No. 1, University Road, Tainan City 701, Taiwan, R.O.C
| | - Tzu-Yun Tseng
- Department of Life Sciences, National Cheng Kung University, No. 1, University Road, Tainan City 701, Taiwan, R.O.C
- Institute of Tropical Plant Sciences and Microbiology, National Cheng Kung University, No. 1, University Road, Tainan City 701, Taiwan, R.O.C
| | - Van-Anh Thi Nguyen
- Department of Life Sciences, National Cheng Kung University, No. 1, University Road, Tainan City 701, Taiwan, R.O.C
| | - Pei-Yu Su
- Department of Life Sciences, National Cheng Kung University, No. 1, University Road, Tainan City 701, Taiwan, R.O.C
| | - Tu-Trinh Thi Truong
- Department of Life Sciences, National Cheng Kung University, No. 1, University Road, Tainan City 701, Taiwan, R.O.C
- Faculty of Technology, The University of Danang-Campus in Kontum, The University of Danang, 704 Phan Dinh Phung Street, Kontum City, Kontum Province, 580000 Vietnam
| | - Jing-Yu Chen
- Department of Life Sciences, National Cheng Kung University, No. 1, University Road, Tainan City 701, Taiwan, R.O.C
| | - Chung-Chih Huang
- Department of Life Sciences, National Cheng Kung University, No. 1, University Road, Tainan City 701, Taiwan, R.O.C
| | - Hao-Jen Huang
- Department of Life Sciences, National Cheng Kung University, No. 1, University Road, Tainan City 701, Taiwan, R.O.C
- Graduate Program in Translational Agricultural Sciences, National Cheng Kung University and Academia Sinica, No. 1, University Road, Tainan City 701, Taiwan, R.O.C
- Institute of Tropical Plant Sciences and Microbiology, National Cheng Kung University, No. 1, University Road, Tainan City 701, Taiwan, R.O.C
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Papadopoulou A, Ainalidou A, Mellidou I, Karamanoli K. Metabolome and transcriptome reprogramming underlying tomato drought resistance triggered by a Pseudomonas strain. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 203:108080. [PMID: 37812990 DOI: 10.1016/j.plaphy.2023.108080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/05/2023] [Accepted: 10/03/2023] [Indexed: 10/11/2023]
Abstract
Although amelioration of drought stress by Plant Growth Promoting Rhizobacteria (PGPR) is a well-documented phenomenon, the combined molecular and metabolic mechanisms governing this process remain unclear. In these lines, the present study aimed to provide new insights in the underlying drought attenuating mechanisms of tomato plants inoculated with a PGP Pseudomonas putida strain, by using a combination of metabolomic and transcriptomic approaches. Following Differentially Expressed Gene analysis, it became evident that inoculation resulted in a less disturbed plant transcriptome upon drought stress. Untargeted metabolomics highlighted the differential metabolite accumulation upon inoculation, as well as the less metabolic reprograming and the lower accumulation of stress-related metabolites for inoculated stressed plants. These findings were in line with morpho-physiological evidence of drought stress mitigation in the inoculated plants. The redox state modulation, the more efficient nitrogen assimilation, as well as the differential changes in amino acid metabolism, and the induction of the phenylpropanoid biosynthesis pathway, were the main drought-attenuating mechanisms in the SAESo11-inoculated plants. Shifts in pathways related to hormonal signaling were also evident upon inoculation at a transcript level and in conjunction with carbon metabolism regulation, possibly contributed to a drought-attenuation preconditioning. The identified signatory molecules of SAESo11-mediated priming against drought included aspartate, myo-inositol, glutamate, along with key genes related to trehalose, tryptophan and cysteine synthesis. Taken together, SAESo11-inoculation provides systemic effects encompassing both metabolic and regulatory functions, supporting both seedling growth and drought stress amelioration.
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Affiliation(s)
- Anastasia Papadopoulou
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Aggeliki Ainalidou
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ifigeneia Mellidou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DEMETER, Thermi, Greece
| | - Katerina Karamanoli
- Laboratory of Agricultural Chemistry, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece.
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Fincheira P, Espinoza J, Vera J, Berrios D, Nahuelcura J, Ruiz A, Quiroz A, Bustamante L, Cornejo P, Tortella G, Diez MC, Benavides-Mendoza A, Rubilar O. The Impact of 2-Ketones Released from Solid Lipid Nanoparticles on Growth Modulation and Antioxidant System of Lactuca sativa. PLANTS (BASEL, SWITZERLAND) 2023; 12:3094. [PMID: 37687341 PMCID: PMC10490278 DOI: 10.3390/plants12173094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 07/31/2023] [Accepted: 08/17/2023] [Indexed: 09/10/2023]
Abstract
2-Ketones are signal molecules reported as plant growth stimulators, but their applications in vegetables have yet to be achieved. Solid lipid nanoparticles (SLNs) emerge as a relevant nanocarrier to develop formulations for the controlled release of 2-ketones. In this sense, seedlings of Lactuca sativa exposed to 125, 375, and 500 µL L-1 of encapsulated 2-nonanone and 2-tridecanone into SLNs were evaluated under controlled conditions. SLNs evidenced a spherical shape with a size of 230 nm. A controlled release of encapsulated doses of 2-nonanone and 2-tridecanone was observed, where a greater release was observed as the encapsulated dose of the compound increased. Root development was strongly stimulated mainly by 2-tridecanone and leaf area (25-32%) by 2-nonanone. Chlorophyll content increased by 15.8% with exposure to 500 µL L-1 of 2-nonanone, and carotenoid concentration was maintained with 2-nonanone. Antioxidant capacity decreased (13-62.7%) in L. sativa treated with 2-ketones, but the total phenol concentration strongly increased in seedlings exposed to some doses of 2-ketones. 2-Tridecanone strongly modulates the enzymatic activities associated with the scavenging of H2O2 at intra- and extracellular levels. In conclusion, 2-ketones released from SLNs modulated the growth and the antioxidant system of L. sativa, depending on the dose released.
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Affiliation(s)
- Paola Fincheira
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco 4811230, Chile; (J.E.); (J.V.); (A.Q.); (G.T.); (M.C.D.); (O.R.)
| | - Javier Espinoza
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco 4811230, Chile; (J.E.); (J.V.); (A.Q.); (G.T.); (M.C.D.); (O.R.)
- Departamento de Ciencias Químicas y Recursos Naturales, Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco 4811230, Chile; (D.B.); (J.N.); (A.R.)
| | - Joelis Vera
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco 4811230, Chile; (J.E.); (J.V.); (A.Q.); (G.T.); (M.C.D.); (O.R.)
| | - Daniela Berrios
- Departamento de Ciencias Químicas y Recursos Naturales, Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco 4811230, Chile; (D.B.); (J.N.); (A.R.)
| | - Javiera Nahuelcura
- Departamento de Ciencias Químicas y Recursos Naturales, Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco 4811230, Chile; (D.B.); (J.N.); (A.R.)
| | - Antonieta Ruiz
- Departamento de Ciencias Químicas y Recursos Naturales, Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco 4811230, Chile; (D.B.); (J.N.); (A.R.)
| | - Andrés Quiroz
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco 4811230, Chile; (J.E.); (J.V.); (A.Q.); (G.T.); (M.C.D.); (O.R.)
- Departamento de Ciencias Químicas y Recursos Naturales, Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco 4811230, Chile; (D.B.); (J.N.); (A.R.)
| | - Luis Bustamante
- Departamento de Análisis Instrumental, Facultad de Farmacia, Universidad de Concepción, P.O. Box 160-C, Concepción 4030000, Chile;
| | - Pablo Cornejo
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota 2260000, Chile;
| | - Gonzalo Tortella
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco 4811230, Chile; (J.E.); (J.V.); (A.Q.); (G.T.); (M.C.D.); (O.R.)
- Departamento de Ingeniería Química, Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco 4811230, Chile
| | - María Cristina Diez
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco 4811230, Chile; (J.E.); (J.V.); (A.Q.); (G.T.); (M.C.D.); (O.R.)
- Departamento de Ingeniería Química, Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco 4811230, Chile
| | | | - Olga Rubilar
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco 4811230, Chile; (J.E.); (J.V.); (A.Q.); (G.T.); (M.C.D.); (O.R.)
- Departamento de Ingeniería Química, Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco 4811230, Chile
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Sheikh TMM, Zhou D, Ali H, Hussain S, Wang N, Chen S, Zhao Y, Wen X, Wang X, Zhang J, Wang L, Deng S, Feng H, Raza W, Fu P, Peng H, Wei L, Daly P. Volatile Organic Compounds Emitted by the Biocontrol Agent Pythium oligandrum Contribute to Ginger Plant Growth and Disease Resistance. Microbiol Spectr 2023; 11:e0151023. [PMID: 37534988 PMCID: PMC10433877 DOI: 10.1128/spectrum.01510-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 06/26/2023] [Indexed: 08/04/2023] Open
Abstract
The oomycete Pythium oligandrum is a potential biocontrol agent to control a wide range of fungal and oomycete-caused diseases, such as Pythium myriotylum-caused rhizome rot in ginger, leading to reduced yields and compromised quality. Previously, P. oligandrum has been studied for its plant growth-promoting potential by auxin production and induction of disease resistance by elicitors such as oligandrin. Volatile organic compounds (VOCs) play beneficial roles in sustainable agriculture by enhancing plant growth and resistance. We investigated the contribution of P. oligandrum-produced VOCs on plant growth and disease suppression by initially using Nicotiana benthamiana plants for screening. P. oligandrum VOCs significantly enhanced tobacco seedling and plant biomass contents. Screening of the individual VOCs showed that 3-octanone and hexadecane promoted the growth of tobacco seedlings. The total VOCs from P. oligandrum also enhanced the shoot and root growth of ginger plants. Transcriptomic analysis showed a higher expression of genes related to plant growth hormones and stress responses in the leaves of ginger plants exposed to P. oligandrum VOCs. The concentrations of plant growth hormones such as auxin, zeatin, and gibberellic acid were higher in the leaves of ginger plants exposed to P. oligandrum VOCs. In a ginger disease biocontrol assay, the VOC-exposed ginger plants infected with P. myriotylum had lower levels of disease severity. We conclude that this study contributes to understanding the growth-promoting mechanisms of P. oligandrum on ginger and tobacco, priming of ginger plants against various stresses, and the mechanisms of action of P. oligandrum as a biocontrol agent. IMPORTANCE Plant growth promotion plays a vital role in enhancing production of agricultural crops, and Pythium oligandrum is known for its plant growth-promoting potential through production of auxins and induction of resistance by elicitors. This study highlights the significance of P. oligandrum-produced VOCs in plant growth promotion and disease resistance. Transcriptomic analyses of leaves of ginger plants exposed to P. oligandrum VOCs revealed the upregulation of genes involved in plant growth hormone signaling and stress responses. Moreover, the concentration of growth hormones significantly increased in P. oligandrum VOC-exposed ginger plants. Additionally, the disease severity was reduced in P. myriotylum-infected ginger plants exposed to P. oligandrum VOCs. In ginger, P. myriotylum-caused rhizome rot disease results in severe losses, and biocontrol has a role as part of an integrated pest management strategy for rhizome rot disease. Overall, growth enhancement and disease reduction in plants exposed to P. oligandrum-produced VOCs contribute to its role as a biocontrol agent.
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Affiliation(s)
- Taha Majid Mahmood Sheikh
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Dongmei Zhou
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Haider Ali
- School of Biosciences, University of Birmingham, Birmingham, United Kingdom
| | - Sarfraz Hussain
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, China
| | - Nan Wang
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Siqiao Chen
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- Fungal Genomics Laboratory (FungiG), Jiangsu Provincial Key Lab of Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing, China
| | - Yishen Zhao
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan, China
| | - Xian Wen
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan, China
| | - Xiaoyu Wang
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Jinfeng Zhang
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Lunji Wang
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan, China
| | - Sheng Deng
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Hui Feng
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Waseem Raza
- Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, National Engineering Research Center for Organic-based Fertilizers, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, China
| | - Pengxiao Fu
- Jiangsu Coastal Ecological Science and Technology Development Co., Ltd., Nanjing, China
| | - Hao Peng
- Jiangsu Coastal Ecological Science and Technology Development Co., Ltd., Nanjing, China
| | - Lihui Wei
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Paul Daly
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
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Liu X, Du Y, Na X, Wang M, Qu Y, Ge L, Wang Y, Gao L, Bai W, Bi Y, Zhou L. Integrative transcriptome and metabolome revealed the molecular mechanism of Bacillus megaterium BT22-mediated growth promotion in Arabidopsis thaliana. JOURNAL OF PLANT PHYSIOLOGY 2023; 285:153995. [PMID: 37163868 DOI: 10.1016/j.jplph.2023.153995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/06/2023] [Accepted: 04/20/2023] [Indexed: 05/12/2023]
Abstract
Plant growth-promoting rhizobacteria (PGPR) can promote plant growth and protect plants from pathogens, which contributes to sustainable agricultural development. Several studies have reported their beneficial characteristics in facilitating plant growth and development and enhancing plant stress resistance through different mechanisms. However, there is still a challenge to study the molecular mechanism of plant response to PGPR. We integrated the transcriptome and metabolome of Arabidopsis thaliana (Arabidopsis) to understand its responses to the inoculation with an isolated PGPR strain (BT22) of Bacillus megaterium. Fresh shoot weight, dry shoot weight and leaf number of Arabidopsis were increased by BT22 treatment, showing a positive growth-promoting effect. According multi-omics analysis, 878 differentially expressed genes (296 up-regulated, 582 down-regulated) and 139 differentially expressed metabolites (66 up-regulated, 73 down-regulated) response to BT22 inoculation. GO enrichment results indicate that the up-regulated genes mainly enriched in the regulation of growth and auxin response pathways. In contrast, the down-regulated genes mainly enriched in wounding response, jasmonic acid and ethylene pathways. BT22 inoculation regulated plant hormone signal transduction of Arabidopsis, including auxin and cytokinin response genes AUX/IAA, SAUR, and A-ARR related to cell enlargement and cell division. The contents of nine flavonoids and seven phenylpropanoid metabolites were increased, which help to induce systemic resistance in plants. These results suggest that BT22 promoted Arabidopsis growth by regulating plant hormone homeostasis and inducing metabolome reprogramming.
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Affiliation(s)
- Xiao Liu
- Biophysics Group, Biomedical Center, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yan Du
- Biophysics Group, Biomedical Center, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaofan Na
- College of Life Science, Lanzhou University, Lanzhou, 730000, China
| | - Man Wang
- College of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
| | - Ying Qu
- Biophysics Group, Biomedical Center, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Kejin Innovation Institute of Heavy Ion Beam Biological Industry, Baiyin, 730900, China
| | - Linghui Ge
- College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, 730000, China
| | - Yuanmeng Wang
- College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, 730000, China
| | - Linqi Gao
- Lueyang County Jinxiu Agricultural Development Co., Ltd, Lueyang, Hanzhong, 724300, China
| | - Wenke Bai
- Lueyang County Jinxiu Agricultural Development Co., Ltd, Lueyang, Hanzhong, 724300, China
| | - Yurong Bi
- College of Life Science, Lanzhou University, Lanzhou, 730000, China
| | - Libin Zhou
- Biophysics Group, Biomedical Center, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Kejin Innovation Institute of Heavy Ion Beam Biological Industry, Baiyin, 730900, China.
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Gómez-Godínez LJ, Aguirre-Noyola JL, Martínez-Romero E, Arteaga-Garibay RI, Ireta-Moreno J, Ruvalcaba-Gómez JM. A Look at Plant-Growth-Promoting Bacteria. PLANTS (BASEL, SWITZERLAND) 2023; 12:1668. [PMID: 37111891 PMCID: PMC10145503 DOI: 10.3390/plants12081668] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/06/2023] [Accepted: 03/23/2023] [Indexed: 06/19/2023]
Abstract
Bacteria have been used to increase crop yields. For their application on crops, bacteria are provided in inoculant formulations that are continuously changing, with liquid- and solid-based products. Bacteria for inoculants are mainly selected from natural isolates. In nature, microorganisms that favor plants exhibit various strategies to succeed and prevail in the rhizosphere, such as biological nitrogen fixation, phosphorus solubilization, and siderophore production. On the other hand, plants have strategies to maintain beneficial microorganisms, such as the exudation of chemoattractanst for specific microorganisms and signaling pathways that regulate plant-bacteria interactions. Transcriptomic approaches are helpful in attempting to elucidate plant-microorganism interactions. Here, we present a review of these issues.
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Affiliation(s)
- Lorena Jacqueline Gómez-Godínez
- Centro Nacional de Recursos Genéticos, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Tepatitlán de Morelos 47600, Jalisco, Mexico
| | - José Luis Aguirre-Noyola
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Cuernavaca 62210, Morelos, Mexico
| | - Esperanza Martínez-Romero
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Cuernavaca 62210, Morelos, Mexico
| | - Ramón Ignacio Arteaga-Garibay
- Centro Nacional de Recursos Genéticos, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Tepatitlán de Morelos 47600, Jalisco, Mexico
| | - Javier Ireta-Moreno
- Centro de Investigación Regional Pacífico Centro, Centro Altos Jalisco, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Tepatitlán de Morelos 2470, Jalisco, Mexico
| | - José Martín Ruvalcaba-Gómez
- Centro Nacional de Recursos Genéticos, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Tepatitlán de Morelos 47600, Jalisco, Mexico
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Zamanzadeh-Nasrabadi SM, Mohammadiapanah F, Hosseini-Mazinani M, Sarikhan S. Salinity stress endurance of the plants with the aid of bacterial genes. Front Genet 2023; 14:1049608. [PMID: 37139239 PMCID: PMC10149814 DOI: 10.3389/fgene.2023.1049608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 03/23/2023] [Indexed: 05/05/2023] Open
Abstract
The application of plant growth-promoting bacteria (PGPB) is vital for sustainable agriculture with continuous world population growth and an increase in soil salinity. Salinity is one of the severe abiotic stresses which lessens the productivity of agricultural lands. Plant growth-promoting bacteria are key players in solving this problem and can mitigate salinity stress. The highest of reported halotolerant Plant growth-promoting bacteria belonged to Firmicutes (approximately 50%), Proteobacteria (40%), and Actinobacteria (10%), respectively. The most dominant genera of halotolerant plant growth-promoting bacteria are Bacillus and Pseudomonas. Currently, the identification of new plant growth-promoting bacteria with special beneficial properties is increasingly needed. Moreover, for the effective use of plant growth-promoting bacteria in agriculture, the unknown molecular aspects of their function and interaction with plants must be defined. Omics and meta-omics studies can unreveal these unknown genes and pathways. However, more accurate omics studies need a detailed understanding of so far known molecular mechanisms of plant stress protection by plant growth-promoting bacteria. In this review, the molecular basis of salinity stress mitigation by plant growth-promoting bacteria is presented, the identified genes in the genomes of 20 halotolerant plant growth-promoting bacteria are assessed, and the prevalence of their involved genes is highlighted. The genes related to the synthesis of indole acetic acid (IAA) (70%), siderophores (60%), osmoprotectants (80%), chaperons (40%), 1-aminocyclopropane-1-carboxylate (ACC) deaminase (50%), and antioxidants (50%), phosphate solubilization (60%), and ion homeostasis (80%) were the most common detected genes in the genomes of evaluated halotolerant plant growth-promoting and salinity stress-alleviating bacteria. The most prevalent genes can be applied as candidates for designing molecular markers for screening of new halotolerant plant growth-promoting bacteria.
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Affiliation(s)
- Seyyedeh Maryam Zamanzadeh-Nasrabadi
- Pharmaceutial Biotechnology Lab, School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Tehran, Iran
| | - Fatemeh Mohammadiapanah
- Pharmaceutial Biotechnology Lab, School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Tehran, Iran
- *Correspondence: Fatemeh Mohammadiapanah,
| | | | - Sajjad Sarikhan
- Molecular Bank, Iranian Biological Resource Center (IBRC), ACECR, Tehran, Iran
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Wang L, Tang Z. How do arbuscular mycorrhizas affect reproductive functional fitness of host plants? FRONTIERS IN PLANT SCIENCE 2022; 13:975488. [PMID: 36072330 PMCID: PMC9441947 DOI: 10.3389/fpls.2022.975488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
Arbuscular mycorrhizal (AM) symbiosis in soil may be directly or indirectly involved in the reproductive process of sexually reproducing plants (seed plants), and affect their reproductive fitness. However, it is not clear how underground AM symbiosis affects plant reproductive function. Here, we reviewed the studies on the effects of AM symbiosis on plant reproductive fitness including both male function (pollen) and female function (seed). AM symbiosis regulates the development and function of plant sexual organs by affecting the nutrient using strategy and participating in the formation of hormone networks and secondary compounds in host plants. The nutrient supply (especially phosphorus supply) of AM symbiosis may be the main factor affecting plant's reproductive function. Moreover, the changes in hormone levels and secondary metabolite content induced by AM symbiosis can also affect host plants reproductive fitness. These effects can occur in pollen formation and transport, pollen tube growth and seed production, and seedling performance. Finally, we discuss other possible effects of AM symbiosis on the male and female functional fitness, and suggest several additional factors that may be involved in the influence of AM symbiosis on the reproductive fitness of host plants. We believe that it is necessary to accurately identify and verify the mechanisms driving the changes of reproductive fitness of host plant in symbiotic networks in the future. A more thorough understanding of the mechanism of AM symbiosis on reproductive function will help to improve our understanding of AM fungus ecological roles and may provide references for improving the productivity of natural and agricultural ecosystems.
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