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Wang X, Wang Y, Fu Y, Zhai Y, Bai X, Liu T, Li G, Zeng L, Zhu S. Multiple omics revealed the growth-promoting mechanism of Bacillus velezensis strains on ramie. FRONTIERS IN PLANT SCIENCE 2024; 15:1367862. [PMID: 38601307 PMCID: PMC11004232 DOI: 10.3389/fpls.2024.1367862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 03/15/2024] [Indexed: 04/12/2024]
Abstract
Beneficial bacteria that promote plant growth can shield plants from negative effects. Yet, the specific biological processes that drive the relationships between soil microbes and plant metabolism are still not fully understood. To investigate this further, we utilized a combination of microbiology and non-targeted metabolomics techniques to analyze the impact of plant growth-promoting bacteria on both the soil microbial communities and the metabolic functions within ramie (Boehmeria nivea) tissues. The findings indicated that the yield and traits of ramie plants are enhanced after treatment with Bacillus velezensis (B. velezensis). These B. velezensis strains exhibit a range of plant growth-promoting properties, including phosphate solubilization and ammonia production. Furthermore, strain YS1 also demonstrates characteristics of IAA production. The presence of B. velezensis resulted in a decrease in soil bacteria diversity, resulting in significant changes in the overall structure and composition of soil bacteria communities. Metabolomics showed that B. velezensis significantly altered the ramie metabolite spectrum, and the differential metabolites were notably enriched (P < 0.05) in five main metabolic pathways: lipid metabolism, nucleotide metabolism, amino acid metabolism, plant secondary metabolites biosynthesis, and plant hormones biosynthesis. Seven common differential metabolites were identified. Correlation analysis showed that the microorganisms were closely related to metabolite accumulation and yield index. In the B. velezensis YS1 and B. velezensis Y4-6-1 treatment groups, the relative abundances of BIrii41 and Bauldia were significantly positively correlated with sphingosine, 9,10,13-TriHOME, fresh weight, and root weight, indicating that these microorganisms regulate the formation of various metabolites, promoting the growth and development of ramie. Conclusively, B. velezensis (particularly YS1) played an important role in regulating soil microbial structure and promoting plant metabolism, growth, and development. The application of the four types of bacteria in promoting ramie growth provides a good basis for future application of biological fertilizers and bio-accelerators.
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Affiliation(s)
| | | | | | | | | | | | | | - Liangbin Zeng
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, China
| | - Siyuan Zhu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, China
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2
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Adss IA, Al-Huqail AA, Khan F, El-Shamy SS, Amer GM, Hafez EE, Ibrahim OM, Sobhy SE, Saleh AA. Physio-molecular responses of tomato cultivars to biotic stress: Exploring the interplay between Alternaria alternata OP881811 infection and plant defence mechanisms. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108421. [PMID: 38335887 DOI: 10.1016/j.plaphy.2024.108421] [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: 11/20/2023] [Revised: 01/18/2024] [Accepted: 02/02/2024] [Indexed: 02/12/2024]
Abstract
Plant fungal diseases impose a formidable challenge for global agricultural productivity, a meticulous examination of host-pathogen interactions. In this intricate study, an exhaustive investigation was conducted on infected tomatoes obtained from Egyptian fields, leading to the precise molecular identification of the fungal isolate as Alternaria alternata (OP881811), and the isolate showed high identity with Chinese isolates (ON973896 and ON790502). Subsequently, fourteen diverse tomato cultivars; Cv Ferment, Cv 103, Cv Damber, Cv 186, Cv 4094, Cv Angham, Cv N 17, Cv Gesma, Cv 010, Cv branch, cv 2020, Cv 023, Cv Gana and Cv 380 were meticulously assessed to discern their susceptibility levels upon inoculation with Alternaria alternata. Thorough scrutiny of disease symptom manifestation and the extent of tomato leaf damage ensued, enabling a comprehensive evaluation of cultivar responses. Results unveiled a spectrum of plant susceptibility, with three cultivars exhibiting heightened vulnerability (Cv Ferment, Cv 103 and Cv Damber), five cultivars displaying moderate susceptibility (Cv 186, Cv 4094, Cv Angham, Cv N 17 and Cv Gesma), and six cultivars demonstrating remarkable resilience to the pathogen (Cv 010, Cv branch, cv, 2020; Cv 023, Cv Gana and Cv 380). In order to gain a thorough understanding of the underlying physiological patterns indicative of plant resistance against A. alternata, an in-depth exploration of polyphenols, flavonoids, and antioxidant enzymes ensued. These key indicators were closely examined, offering valuable insights into the interplay between plant physiology and pathogen response. Robust correlations emerged, with higher contents of these compounds correlating with heightened susceptibility, while lower levels were indicative of enhanced plant tolerance. In tandem with the physiological assessment, a thorough investigation of four pivotal defensive genes (PR5, PPO, PR3, and POX) was undertaken, employing cutting-edge Real-Time PCR technology. Gene expression profiles displayed intriguing variations across the evaluated tomato cultivars, ultimately facilitating the classification of cultivars into distinct groups based on their levels of resistance, moderate susceptibility, or heightened sensitivity. By unravelling the intricate dynamics of plant susceptibility, physiological responses, and patterns of gene expression, this comprehensive study paves the way for targeted strategies to combat plant fungal diseases. The findings contribute valuable insights into host-pathogen interactions and empower agricultural stakeholders with the knowledge required to fortify crop resilience and safeguard global food security.
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Affiliation(s)
- Ibrahim A Adss
- Division of Genetics, Faculty of Agriculture, Damanhur University, Al-Beheira, Egypt.
| | - Asma A Al-Huqail
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Faheema Khan
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Sawsan S El-Shamy
- Division of Plant Pathology, Faculty of Agriculture, Damanhur University, Al-Beheira, Egypt.
| | - Ghoname M Amer
- Division of Plant Pathology, Faculty of Agriculture, Damanhur University, Al-Beheira, Egypt.
| | - Elsayed E Hafez
- Plant Protection and Bimolecular Diagnosis Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications, New Borg El-Arab, 21934, Egypt.
| | - Omar M Ibrahim
- Department of Medicine, Washington University School of Medicine, St Louis, MO, 63110, USA.
| | - Sherien E Sobhy
- Plant Protection and Bimolecular Diagnosis Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications, New Borg El-Arab, 21934, Egypt.
| | - Ahmed A Saleh
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China; Animal and Fish Production Department, Faculty of Agriculture (Al-Shatby), Alexandria University, Alexandria City, 11865, Egypt.
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Janni M, Maestri E, Gullì M, Marmiroli M, Marmiroli N. Plant responses to climate change, how global warming may impact on food security: a critical review. FRONTIERS IN PLANT SCIENCE 2024; 14:1297569. [PMID: 38250438 PMCID: PMC10796516 DOI: 10.3389/fpls.2023.1297569] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 12/14/2023] [Indexed: 01/23/2024]
Abstract
Global agricultural production must double by 2050 to meet the demands of an increasing world human population but this challenge is further exacerbated by climate change. Environmental stress, heat, and drought are key drivers in food security and strongly impacts on crop productivity. Moreover, global warming is threatening the survival of many species including those which we rely on for food production, forcing migration of cultivation areas with further impoverishing of the environment and of the genetic variability of crop species with fall out effects on food security. This review considers the relationship of climatic changes and their bearing on sustainability of natural and agricultural ecosystems, as well as the role of omics-technologies, genomics, proteomics, metabolomics, phenomics and ionomics. The use of resource saving technologies such as precision agriculture and new fertilization technologies are discussed with a focus on their use in breeding plants with higher tolerance and adaptability and as mitigation tools for global warming and climate changes. Nevertheless, plants are exposed to multiple stresses. This study lays the basis for the proposition of a novel research paradigm which is referred to a holistic approach and that went beyond the exclusive concept of crop yield, but that included sustainability, socio-economic impacts of production, commercialization, and agroecosystem management.
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Affiliation(s)
- Michela Janni
- Institute of Bioscience and Bioresources (IBBR), National Research Council (CNR), Bari, Italy
- Institute of Materials for Electronics and Magnetism (IMEM), National Research Council (CNR), Parma, Italy
| | - Elena Maestri
- Department of Chemistry, Life Sciences and Environmental Sustainability, Interdepartmental Centers SITEIA.PARMA and CIDEA, University of Parma, Parma, Italy
| | - Mariolina Gullì
- Department of Chemistry, Life Sciences and Environmental Sustainability, Interdepartmental Centers SITEIA.PARMA and CIDEA, University of Parma, Parma, Italy
| | - Marta Marmiroli
- Department of Chemistry, Life Sciences and Environmental Sustainability, Interdepartmental Centers SITEIA.PARMA and CIDEA, University of Parma, Parma, Italy
| | - Nelson Marmiroli
- Consorzio Interuniversitario Nazionale per le Scienze Ambientali (CINSA) Interuniversity Consortium for Environmental Sciences, Parma/Venice, Italy
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Anuar MSK, Hashim AM, Ho CL, Wong MY, Sundram S, Saidi NB, Yusof MT. Synergism: biocontrol agents and biostimulants in reducing abiotic and biotic stresses in crop. World J Microbiol Biotechnol 2023; 39:123. [PMID: 36934342 DOI: 10.1007/s11274-023-03579-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 03/12/2023] [Indexed: 03/20/2023]
Abstract
In today's fast-shifting climate change scenario, crops are exposed to environmental pressures, abiotic and biotic stress. Hence, these will affect the production of agricultural products and give rise to a worldwide economic crisis. The increase in world population has exacerbated the situation with increasing food demand. The use of chemical agents is no longer recommended due to adverse effects towards the environment and health. Biocontrol agents (BCAs) and biostimulants, are feasible options for dealing with yield losses induced by plant stresses, which are becoming more intense due to climate change. BCAs and biostimulants have been recommended due to their dual action in reducing both stresses simultaneously. Although protection against biotic stresses falls outside the generally accepted definition of biostimulant, some microbial and non-microbial biostimulants possess the biocontrol function, which helps reduce biotic pressure on crops. The application of synergisms using BCAs and biostimulants to control crop stresses is rarely explored. Currently, a combined application using both agents offer a great alternative to increase the yield and growth of crops while managing stresses. This article provides an overview of crop stresses and plant stress responses, a general knowledge on synergism, mathematical modelling used for synergy evaluation and type of in vitro and in vivo synergy testing, as well as the application of synergism using BCAs and biostimulants in reducing crop stresses. This review will facilitate an understanding of the combined effect of both agents on improving crop yield and growth and reducing stress while also providing an eco-friendly alternative to agroecosystems.
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Affiliation(s)
- Muhammad Salahudin Kheirel Anuar
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, UPM, Selangor, 43400, Malaysia
| | - Amalia Mohd Hashim
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, UPM, Selangor, 43400, Malaysia
| | - Chai Ling Ho
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, UPM, Selangor, 43400, Malaysia
| | - Mui-Yun Wong
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, UPM, Selangor, 43400, Malaysia
| | - Shamala Sundram
- Biology Research Division, Malaysian Palm Oil Board, Kajang, Selangor, 43000, Malaysia
| | - Noor Baity Saidi
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, UPM, Selangor, 43400, Malaysia
| | - Mohd Termizi Yusof
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, UPM, Selangor, 43400, Malaysia.
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5
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Zamzami P, Poursaeed A, Hoseini SJF. Modeling stabilizing the of orchard managers on the shores of Lake Urmia against late spring frost. BRAZ J BIOL 2023; 84:e270693. [PMID: 36820789 DOI: 10.1590/1519-6984.270693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Accepted: 01/29/2023] [Indexed: 02/22/2023] Open
Abstract
Despite the adverse effects of late spring frost on the ecological and economic impact on agriculture, the management of these events are poorly investigated. Therefore, the grounded theory was used for extracting the livelihood stabilization model of orchardists on the shores of Lake Urmia against late spring frosts. The statistical population of this study in the qualitative part included 22 experts in the field of horticulture. In the quantitative study, they included all orchardists in the villages along with Lake Urmia, comprising 341 people, of which 236 were randomly selected. By carefully examining and linking the concepts and subcategories, the most important subcategories that were included six subcategories. The results of all calculated goodness-of-fit indexes (chi-square [P > 0.01], RMSEA = 0.000, NFI = 0.95, CFI = 0.91, and GFI = 0.92) showed the model provided an excellent fit for the data. Standardized regression coefficients showed that interfering factors had the greatest impact on the livelihood of orchardists against late spring frosts (β = 0.47). Also, the background factors (β = 0.43) and causal factors (β = 0.39) were found to affect the livelihood of the orchardists in encountering late spring frost. The results of multiple square correlations of dependent variables also indicated that about 41% of the livelihood variance of small-scale orchardists was explained by the predictor variables (i.e. causal conditions, background factors and interfering factors). The findings of this study can assist policymakers, planners and relevant managers while paying more attention to orchardists in the region, so as to support decisions in order to achieve sustainable development.
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Affiliation(s)
- P Zamzami
- Islamic Azad University, Science and Research Branch, Department of Agricultural Extension and Education, Tehran, Iran
| | - A Poursaeed
- Islamic Azad University, Ilam Branch, Department of Agricultural Extension and Education, Ilam, Iran
| | - S J F Hoseini
- Islamic Azad University, Science and Research Branch, Department of Agricultural Extension and Education, Tehran, Iran
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6
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Batista BD, Singh BK. Next generation tools for crop-microbiome manipulation to mitigate the impact of climate change. Environ Microbiol 2023; 25:105-110. [PMID: 36178198 DOI: 10.1111/1462-2920.16231] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 09/28/2022] [Indexed: 01/21/2023]
Affiliation(s)
- Bruna D Batista
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, New South Wales, Australia
| | - Brajesh K Singh
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, New South Wales, Australia.,Global Centre for Land-Based Innovation, Western Sydney University, Richmond, New South Wales, Australia
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7
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Verma KK, Song XP, Li DM, Singh M, Wu JM, Singh RK, Sharma A, Zhang BQ, Li YR. Silicon and soil microorganisms improve rhizospheric soil health with bacterial community, plant growth, performance and yield. PLANT SIGNALING & BEHAVIOR 2022; 17:2104004. [PMID: 35943127 PMCID: PMC9364706 DOI: 10.1080/15592324.2022.2104004] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 07/13/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
The interaction of silicon and soil microorganisms stimulates crop enhancement to ensure sustainable agriculture. Silicon may potentially increase nutrient availability in rhizosphere with improved plants' growth, development as it does not produce phytotoxicity. The rhizospheric microbiome accommodates a variety of microbial species that live in a small area of soil directly associated with the hidden half plants' system. Plant growth-promoting rhizobacteria (PGPR) play a major role in plant development in response to adverse climatic conditions. PGPRs may enhance the growth, quality, productivity in variety of crops, and mitigate abiotic stresses by reprogramming stress-induced physiological variations in plants via different mechanisms, such as synthesis of indole-3-acetic acid, 1-aminocyclopropane-1-carboxylate deaminase, exopolysaccharides, volatile organic compounds, atmospheric nitrogen fixation, and phosphate solubilization. Our article eye upon interactions of silicon and plant microbes which seems to be an opportunity for sustainable agriculture for series of crops and cropping systems in years to come, essential to safeguard the food security for masses.
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Affiliation(s)
- Krishan K. Verma
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/ Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China
| | - Xiu-Peng Song
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/ Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China
| | - Dong-Mei Li
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/ Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China
| | - Munna Singh
- Department of Botany, University of Lucknow, Lucknow, India
| | - Jian-Ming Wu
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/ Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China
| | - Rajesh Kumar Singh
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/ Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China
| | - Anjney Sharma
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/ Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China
| | - Bao-Qing Zhang
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/ Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China
| | - Yang-Rui Li
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/ Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China
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Jíménez-Arias D, Morales-Sierra S, Silva P, Carrêlo H, Gonçalves A, Ganança JFT, Nunes N, Gouveia CSS, Alves S, Borges JP, Pinheiro de Carvalho MÂA. Encapsulation with Natural Polymers to Improve the Properties of Biostimulants in Agriculture. PLANTS (BASEL, SWITZERLAND) 2022; 12:plants12010055. [PMID: 36616183 PMCID: PMC9823467 DOI: 10.3390/plants12010055] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/14/2022] [Accepted: 12/19/2022] [Indexed: 05/28/2023]
Abstract
Encapsulation in agriculture today is practically focused on agrochemicals such as pesticides, herbicides, fungicides, or fertilizers to enhance the protective or nutritive aspects of the entrapped active ingredients. However, one of the most promising and environmentally friendly technologies, biostimulants, is hardly explored in this field. Encapsulation of biostimulants could indeed be an excellent means of counteracting the problems posed by their nature: they are easily biodegradable, and most of them run off through the soil, losing most of the compounds, thus becoming inaccessible to plants. In this respect, encapsulation seems to be a practical and profitable way to increase the stability and durability of biostimulants under field conditions. This review paper aims to provide researchers working on plant biostimulants with a quick overview of how to get started with encapsulation. Here we describe different techniques and offer protocols and suggestions for introduction to polymer science to improve the properties of biostimulants for future agricultural applications.
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Affiliation(s)
- David Jíménez-Arias
- ISOPlexis, Center for Sustainable Agriculture and Food Technology, University of Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
| | - Sarai Morales-Sierra
- Grupo de Biología Vegetal Aplicada, Departamento de Botánica, Ecología y Fisiología Vegetal-Facultad de Farmacia, Universidad de La Laguna, Avenida, Astrofísico Francisco Sánchez s/n, 38071 La Laguna, Spain
| | - Patrícia Silva
- ISOPlexis, Center for Sustainable Agriculture and Food Technology, University of Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
- Faculty of Exact Sciences and Engineering, University of Madeira, 9020-105 Funchal, Portugal
| | - Henrique Carrêlo
- CENIMAT|i3N, Department of Materials Science, School of Science and Technology, NOVA University Lisbon and CEMOP/UNINOVA, 2829-516 Caparica, Portugal
| | - Adriana Gonçalves
- CENIMAT|i3N, Department of Materials Science, School of Science and Technology, NOVA University Lisbon and CEMOP/UNINOVA, 2829-516 Caparica, Portugal
| | - José Filipe Teixeira Ganança
- ISOPlexis, Center for Sustainable Agriculture and Food Technology, University of Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
| | - Nuno Nunes
- ISOPlexis, Center for Sustainable Agriculture and Food Technology, University of Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
- CiTAB, Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes and Alto Douro, Quinta de Prados, 5000-801 Vila Real, Portugal
| | - Carla S. S. Gouveia
- ISOPlexis, Center for Sustainable Agriculture and Food Technology, University of Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
- CiTAB, Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes and Alto Douro, Quinta de Prados, 5000-801 Vila Real, Portugal
- Faculty of Life Sciences, University of Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
| | - Sónia Alves
- ISOPlexis, Center for Sustainable Agriculture and Food Technology, University of Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
| | - João Paulo Borges
- CENIMAT|i3N, Department of Materials Science, School of Science and Technology, NOVA University Lisbon and CEMOP/UNINOVA, 2829-516 Caparica, Portugal
| | - Miguel Â. A. Pinheiro de Carvalho
- ISOPlexis, Center for Sustainable Agriculture and Food Technology, University of Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
- CiTAB, Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes and Alto Douro, Quinta de Prados, 5000-801 Vila Real, Portugal
- Faculty of Life Sciences, University of Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
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Endophytic Pseudomonas sp. from Agave palmeri Participate in the Rhizophagy Cycle and Act as Biostimulants in Crop Plants. BIOLOGY 2022; 11:biology11121790. [PMID: 36552299 PMCID: PMC9775861 DOI: 10.3390/biology11121790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/03/2022] [Accepted: 12/07/2022] [Indexed: 12/13/2022]
Abstract
Plant growth-promoting bacteria are generating increasing interest in the agricultural industry as a promising alternative to traditional chemical fertilizers; however, much of the focus has been on rhizosphere bacteria. Bacterial endophytes are another promising source of plant growth-promoting bacteria, and though many plants have already been prospected for beneficial microbes, desert plants have been underrepresented in such studies. In this study, we show the growth-promoting potential of five strains of endophytic Pseudomonas sp. isolated from Agave palmeri, an agave from the Sonoran Desert. When inoculated onto Kentucky bluegrass, clover, carrot, coriander, and wheat, endophytic Pseudomonas sp. increased seedling root lengths in all hosts and seedling shoot lengths in Kentucky bluegrass, carrot, and wheat. Transformation of the Pseudomonas sp. strain P3AW to express the fluorescent protein mCherry revealed that Pseudomonas sp. becomes endophytic in non-native hosts and participates in parts of the rhizophagy cycle, a process by which endophytic bacteria cycle between the soil and roots, bringing in nutrients from the soil which are then extracted through reactive oxygen-mediated bacterial degradation in the roots. Tracking of the Pseudomonas sp. strain P3AW also provided evidence for a system of endophyte, or endophyte cell content, transport via the vascular bundle. These results provide further evidence of the rhizophagy cycle in plants and how it relates to growth promotion in plants by biostimulant bacteria.
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Hamdan MF, Karlson CKS, Teoh EY, Lau SE, Tan BC. Genome Editing for Sustainable Crop Improvement and Mitigation of Biotic and Abiotic Stresses. PLANTS (BASEL, SWITZERLAND) 2022. [PMID: 36235491 DOI: 10.1007/s44187-022-00009-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Climate change poses a serious threat to global agricultural activity and food production. Plant genome editing technologies have been widely used to develop crop varieties with superior qualities or can tolerate adverse environmental conditions. Unlike conventional breeding techniques (e.g., selective breeding and mutation breeding), modern genome editing tools offer more targeted and specific alterations of the plant genome and could significantly speed up the progress of developing crops with desired traits, such as higher yield and/or stronger resilience to the changing environment. In this review, we discuss the current development and future applications of genome editing technologies in mitigating the impacts of biotic and abiotic stresses on agriculture. We focus specifically on the CRISPR/Cas system, which has been the center of attention in the last few years as a revolutionary genome-editing tool in various species. We also conducted a bibliographic analysis on CRISPR-related papers published from 2012 to 2021 (10 years) to identify trends and potential in the CRISPR/Cas-related plant research. In addition, this review article outlines the current shortcomings and challenges of employing genome editing technologies in agriculture with notes on future prospective. We believe combining conventional and more innovative technologies in agriculture would be the key to optimizing crop improvement beyond the limitations of traditional agricultural practices.
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Affiliation(s)
- Mohd Fadhli Hamdan
- Centre for Research in Biotechnology for Agriculture, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Chou Khai Soong Karlson
- Centre for Research in Biotechnology for Agriculture, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Ee Yang Teoh
- Centre for Research in Biotechnology for Agriculture, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Su-Ee Lau
- Centre for Research in Biotechnology for Agriculture, Universiti Malaya, Kuala Lumpur 50603, Malaysia
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Boon Chin Tan
- Centre for Research in Biotechnology for Agriculture, Universiti Malaya, Kuala Lumpur 50603, Malaysia
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Fusco GM, Nicastro R, Rouphael Y, Carillo P. The Effects of the Microbial Biostimulants Approved by EU Regulation 2019/1009 on Yield and Quality of Vegetable Crops. Foods 2022; 11:2656. [PMID: 36076841 PMCID: PMC9455239 DOI: 10.3390/foods11172656] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 08/26/2022] [Accepted: 08/28/2022] [Indexed: 12/04/2022] Open
Abstract
The use of microbial biostimulants such as plant growth-promoting rhizobacteria (PGPB) and arbuscular mycorrhizal fungi (AMF) has gained popularity in recent years as a sustainable approach to boost yield as well as the quality of produce. The beneficial effects of microbial biostimulants have been reported numerous times. However, information is missing concerning quantitative assessment of the overall impact of microbial biostimulants on the yield and quality of vegetable crops. Here we provide for the first time a comprehensive, semi-systematic review of the effects of microbial biostimulants allowed by Regulation (EU) 2019/1009, including microorganisms belonging to the AMF (phylum Glomeromycota), or to Azospirillum, Azotobacter and Rhizobium genera, on vegetable crops' quality and yield, with rigorous inclusion and exclusion criteria based on the PRISMA method. We identified, selected and critically evaluated all the relevant research studies from 2010 onward in order to provide a critical appraisal of the most recent findings related to these EU-allowed microbial biostimulants and their effects on vegetable crops' quality and yield. Moreover, we highlighted which vegetable crops received more beneficial effects from specific microbial biostimulants and the protocols employed for plant inoculation. Our study is intended to draw more attention from the scientific community to this important instrument to produce nutrient-dense vegetables in a sustainable manner. Finally, our semi-systematic review provides important microbial biostimulant application guidelines and gives extension specialists and vegetable growers insights into achieving an additional benefit from microbial biostimulant application.
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Affiliation(s)
- Giovanna Marta Fusco
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “Luigi Vanvitelli”, Via Vivaldi 43, 81100 Caserta, Italy
| | - Rosalinda Nicastro
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “Luigi Vanvitelli”, Via Vivaldi 43, 81100 Caserta, Italy
| | - Youssef Rouphael
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy
| | - Petronia Carillo
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “Luigi Vanvitelli”, Via Vivaldi 43, 81100 Caserta, Italy
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12
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Spinelli V, Brasili E, Sciubba F, Ceci A, Giampaoli O, Miccheli A, Pasqua G, Persiani AM. Biostimulant Effects of Chaetomium globosum and Minimedusa polyspora Culture Filtrates on Cichorium intybus Plant: Growth Performance and Metabolomic Traits. FRONTIERS IN PLANT SCIENCE 2022; 13:879076. [PMID: 35646045 PMCID: PMC9134003 DOI: 10.3389/fpls.2022.879076] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 04/11/2022] [Indexed: 06/12/2023]
Abstract
In this study, we investigated the biostimulant effect of fungal culture filtrates obtained from Chaetomium globosum and Minimedusa polyspora on growth performance and metabolomic traits of chicory (Cichorium intybus) plants. For the first time, we showed that M. polyspora culture filtrate exerts a direct plant growth-promoting effect through an increase of biomass, both in shoots and roots, and of the leaf area. Conversely, no significant effect on morphological traits and biomass yield was observed in C. intybus plants treated with C. globosum culture filtrate. Based on 1H-NMR metabolomics data, differential metabolites and their related metabolic pathways were highlighted. The treatment with C. globosum and M. polyspora culture filtrates stimulated a common response in C. intybus roots involving the synthesis of 3-OH-butyrate through the decrease in the synthesis of fatty acids and sterols, as a mechanism balancing the NADPH/NADP+ ratio. The fungal culture filtrates differently triggered the phenylpropanoid pathway in C. intybus plants: C. globosum culture filtrate increased phenylalanine and chicoric acid in the roots, whereas M. polyspora culture filtrate stimulated an increase of 4-OH-benzoate. Chicoric acid, whose biosynthetic pathway in the chicory plant is putative and still not well known, is a very promising natural compound playing an important role in plant defense. On the contrary, benzoic acids serve as precursors for a wide variety of essential compounds playing crucial roles in plant fitness and defense response activation. To the best of our knowledge, this is the first study that shows the biostimulant effect of C. globosum and M. polyspora culture filtrates on C. intybus growth and metabolome, increasing the knowledge on fungal bioresources for the development of biostimulants.
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Affiliation(s)
- Veronica Spinelli
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | - Elisa Brasili
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
- NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, Rome, Italy
| | - Fabio Sciubba
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
- NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, Rome, Italy
| | - Andrea Ceci
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | - Ottavia Giampaoli
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
- NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, Rome, Italy
| | - Alfredo Miccheli
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
- NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, Rome, Italy
| | - Gabriella Pasqua
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
- NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, Rome, Italy
| | - Anna Maria Persiani
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
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13
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Ganugi P, Fiorini A, Ardenti F, Caffi T, Bonini P, Taskin E, Puglisi E, Tabaglio V, Trevisan M, Lucini L. Nitrogen use efficiency, rhizosphere bacterial community, and root metabolome reprogramming due to maize seed treatment with microbial biostimulants. PHYSIOLOGIA PLANTARUM 2022; 174:e13679. [PMID: 35362106 PMCID: PMC9324912 DOI: 10.1111/ppl.13679] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 02/26/2022] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
Seed inoculation with beneficial microorganisms has gained importance as it has been proven to show biostimulant activity in plants, especially in terms of abiotic/biotic stress tolerance and plant growth promotion, representing a sustainable way to ensure yield stability under low input sustainable agriculture. Nevertheless, limited knowledge is available concerning the molecular and physiological processes underlying the root-inoculant symbiosis or plant response at the root system level. Our work aimed to integrate the interrelationship between agronomic traits, rhizosphere microbial population and metabolic processes in roots, following seed treatment with either arbuscular mycorrhizal fungi (AMF) or Plant Growth-Promoting Rhizobacteria (PGPR). To this aim, maize was grown under open field conditions with either optimal or reduced nitrogen availability. Both seed treatments increased nitrogen uptake efficiency under reduced nitrogen supply revealed some microbial community changes among treatments at root microbiome level and limited yield increases, while significant changes could be observed at metabolome level. Amino acid, lipid, flavone, lignan, and phenylpropanoid concentrations were mostly modulated. Integrative analysis of multi-omics datasets (Multiple Co-Inertia Analysis) highlighted a strong correlation between the metagenomics and the untargeted metabolomics datasets, suggesting a coordinate modulation of root physiological traits.
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Affiliation(s)
- Paola Ganugi
- Department for Sustainable Food ProcessUniversità Cattolica del Sacro CuorePiacenzaItaly
| | - Andrea Fiorini
- Department of Sustainable Crop ProductionUniversità Cattolica del Sacro CuorePiacenzaItaly
| | - Federico Ardenti
- Department of Sustainable Crop ProductionUniversità Cattolica del Sacro CuorePiacenzaItaly
| | - Tito Caffi
- Department of Sustainable Crop ProductionUniversità Cattolica del Sacro CuorePiacenzaItaly
| | | | - Eren Taskin
- Department for Sustainable Food ProcessUniversità Cattolica del Sacro CuorePiacenzaItaly
| | - Edoardo Puglisi
- Department for Sustainable Food ProcessUniversità Cattolica del Sacro CuorePiacenzaItaly
| | - Vincenzo Tabaglio
- Department of Sustainable Crop ProductionUniversità Cattolica del Sacro CuorePiacenzaItaly
| | - Marco Trevisan
- Department for Sustainable Food ProcessUniversità Cattolica del Sacro CuorePiacenzaItaly
| | - Luigi Lucini
- Department for Sustainable Food ProcessUniversità Cattolica del Sacro CuorePiacenzaItaly
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14
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Ebert AW. Sprouts and Microgreens-Novel Food Sources for Healthy Diets. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11040571. [PMID: 35214902 PMCID: PMC8877763 DOI: 10.3390/plants11040571] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 05/09/2023]
Abstract
With the growing interest of society in healthy eating, the interest in fresh, ready-to-eat, functional food, such as microscale vegetables (sprouted seeds and microgreens), has been on the rise in recent years globally. This review briefly describes the crops commonly used for microscale vegetable production, highlights Brassica vegetables because of their health-promoting secondary metabolites (polyphenols, glucosinolates), and looks at consumer acceptance of sprouts and microgreens. Apart from the main crops used for microscale vegetable production, landraces, wild food plants, and crops' wild relatives often have high phytonutrient density and exciting flavors and tastes, thus providing the scope to widen the range of crops and species used for this purpose. Moreover, the nutritional value and content of phytochemicals often vary with plant growth and development within the same crop. Sprouted seeds and microgreens are often more nutrient-dense than ungerminated seeds or mature vegetables. This review also describes the environmental and priming factors that may impact the nutritional value and content of phytochemicals of microscale vegetables. These factors include the growth environment, growing substrates, imposed environmental stresses, seed priming and biostimulants, biofortification, and the effect of light in controlled environments. This review also touches on microgreen market trends. Due to their short growth cycle, nutrient-dense sprouts and microgreens can be produced with minimal input; without pesticides, they can even be home-grown and harvested as needed, hence having low environmental impacts and a broad acceptance among health-conscious consumers.
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Affiliation(s)
- Andreas W Ebert
- World Vegetable Center, 60 Yi-Min Liao, Shanhua, Tainan 74151, Taiwan
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15
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Sangiorgio D, Cellini A, Donati I, Ferrari E, Tanunchai B, Fareed Mohamed Wahdan S, Sadubsarn D, Farneti B, Checcucci A, Buscot F, Spinelli F, Purahong W. Taxonomical and functional composition of strawberry microbiome is genotype-dependent. J Adv Res 2022; 42:189-204. [PMID: 36513413 PMCID: PMC9788945 DOI: 10.1016/j.jare.2022.02.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 02/01/2022] [Accepted: 02/17/2022] [Indexed: 12/27/2022] Open
Abstract
INTRODUCTION Specific microbial communities are associated to host plants, influencing their phenotype and fitness.Despite the rising interest in plant microbiome, the role of microbial communities associated with perennial fruit plants remains overlooked. OBJECTIVES This work provides the first comprehensive descriptionof the taxonomical and functional bacterial and fungal microbiota of below- and above-ground organsof three commercially important strawberry genotypes under cultural conditions. METHODS Strawberry-associatedfungal and bacterial microbiomes were characterised by Next-Generation Sequencing and the potential functions expressed by the bacterial microbiome were analysed by both in silico and in vitro characterisation of plant growth-promoting abilities of native bacteria. Additionally, the association between the strawberry microbiome, plant disease tolerance, plant mineral nutrient content, and fruit quality was investigated. RESULTS Results showed that thestrawberry core microbiome included 24 bacteria and 15 fungal operational taxonomicunits (OTUs).However, plant organ and genotype had a significant role in determining the taxonomical and functional composition of microbial communities. Interestingly, the cultivar with the highesttolerance against powdery mildew and leaf spot and the highest fruit productivity was the only one able to ubiquitously recruit the beneficial bacterium, Pseudomonasfluorescens, and to establish a mutualistic symbiosis with the arbuscular mycorrhizaRhizophagus irregularis. CONCLUSION This work sheds light on the interaction of cultivated strawberry genotypes with a variety of microbes and highlights the importance of their applications to increase the sustainability of fruit crop production.
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Affiliation(s)
- Daniela Sangiorgio
- Department of Agricultural and Food Sciences (DISTAL), Alma Mater Studiorum - University of Bologna, viale Fanin 46, 40127 Bologna, Italy
| | - Antonio Cellini
- Department of Agricultural and Food Sciences (DISTAL), Alma Mater Studiorum - University of Bologna, viale Fanin 46, 40127 Bologna, Italy
| | | | - Erika Ferrari
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via Campi 103, 41125 Modena, Italy
| | - Benjawan Tanunchai
- UFZ-Helmholtz Centre for Environmental Research, Department of Soil Ecology, Theodor-Lieser-Str. 4, D-06120 Halle (Saale), Germany
| | - Sara Fareed Mohamed Wahdan
- UFZ-Helmholtz Centre for Environmental Research, Department of Soil Ecology, Theodor-Lieser-Str. 4, D-06120 Halle (Saale), Germany,Department of Botany, Faculty of Science, Suez Canal University, 41522 Ismailia, Egypt
| | - Dolaya Sadubsarn
- UFZ-Helmholtz Centre for Environmental Research, Department of Soil Ecology, Theodor-Lieser-Str. 4, D-06120 Halle (Saale), Germany
| | - Brian Farneti
- Fondazione Edmund Mach, Research and Innovation Centre, Via E. Mach 1, 38010, S. Michele all’Adige, TN, Italy
| | - Alice Checcucci
- Department of Agricultural and Food Sciences (DISTAL), Alma Mater Studiorum - University of Bologna, viale Fanin 46, 40127 Bologna, Italy
| | - François Buscot
- UFZ-Helmholtz Centre for Environmental Research, Department of Soil Ecology, Theodor-Lieser-Str. 4, D-06120 Halle (Saale), Germany,German Centre for Integrative Biodiversity Research (iDiv), Halle-Jena-Leipzig, Deutscher Platz 5e, D-04103 Leipzig, Germany
| | - Francesco Spinelli
- Department of Agricultural and Food Sciences (DISTAL), Alma Mater Studiorum - University of Bologna, viale Fanin 46, 40127 Bologna, Italy,Corresponding authors.
| | - Witoon Purahong
- UFZ-Helmholtz Centre for Environmental Research, Department of Soil Ecology, Theodor-Lieser-Str. 4, D-06120 Halle (Saale), Germany,Corresponding authors.
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16
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Fadiji AE, Babalola OO, Santoyo G, Perazzolli M. The Potential Role of Microbial Biostimulants in the Amelioration of Climate Change-Associated Abiotic Stresses on Crops. Front Microbiol 2022; 12:829099. [PMID: 35095828 PMCID: PMC8795815 DOI: 10.3389/fmicb.2021.829099] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 12/29/2021] [Indexed: 02/05/2023] Open
Abstract
Crop plants are more often exposed to abiotic stresses in the current age of fast-evolving climate change. This includes exposure to extreme and unpredictable changes in climatic conditions, phytosanitary hazards, and cultivation conditions, which results in drastic losses in worldwide agricultural productions. Plants coexist with microbial symbionts, some of which play key roles in the ecosystem and plant processes. The application of microbial biostimulants, which take advantage of symbiotic relationships, is a long-term strategy for improving plant productivity and performance, even in the face of climate change-associated stresses. Beneficial filamentous fungi, yeasts, and bacteria are examples of microbial biostimulants, which can boost the growth, yield, nutrition and stress tolerance in plants. This paper highlights recent information about the role of microbial biostimulants and their potential application in mitigating the abiotic stresses occurring on crop plants due to climate change. A critical evaluation for their efficient use under diverse climatic conditions is also made. Currently, accessible products generally improve cultural conditions, but their action mechanisms are mostly unknown, and their benefits are frequently inconsistent. Thus, further studies that could lead to the more precisely targeted products are discussed.
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Affiliation(s)
- Ayomide Emmanuel Fadiji
- Food Security and Safety Niche, Faculty of Natural and Agricultural Sciences, North-West University, Potchefstroom, South Africa
| | - Olubukola Oluranti Babalola
- Food Security and Safety Niche, Faculty of Natural and Agricultural Sciences, North-West University, Potchefstroom, South Africa
| | - Gustavo Santoyo
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Michele Perazzolli
- Center Agriculture Food Environment (C3A), University of Trento, San Michele all’Adige, Italy
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Italy
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17
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Brambilla A, Sommer A, Ghirardo A, Wenig M, Knappe C, Weber B, Amesmaier M, Lenk M, Schnitzler JP, Vlot AC. Immunity-associated volatile emissions of β-ionone and nonanal propagate defence responses in neighbouring barley plants. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:615-630. [PMID: 34849759 DOI: 10.1093/jxb/erab520] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 11/24/2021] [Indexed: 06/13/2023]
Abstract
Plants activate biochemical responses to combat stress. (Hemi-)biotrophic pathogens are fended off by systemic acquired resistance (SAR), a primed state allowing plants to respond faster and more strongly upon subsequent infection. Here, we show that SAR-like defences in barley (Hordeum vulgare) are propagated between neighbouring plants, which respond with enhanced resistance to the volatile cues from infected senders. The emissions of the sender plants contained 15 volatile organic compounds (VOCs) associated with infection. Two of these, β-ionone and nonanal, elicited resistance upon plant exposure. Whole-genome transcriptomics analysis confirmed that interplant propagation of defence in barley is established as a form of priming. Although gene expression changes were more pronounced after challenge infection of the receiver plants with Blumeria graminis f. sp. hordei, differential gene expression in response to the volatile cues of the sender plants included an induction of HISTONE DEACETYLASE 2 (HvHDA2) and priming of TETRATRICOPEPTIDE REPEAT-LIKE superfamily protein (HvTPL). Because HvHDA2 and HvTPL transcript accumulation was also enhanced by exposure of barley to β-ionone and nonanal, our data identify both genes as possible defence/priming markers in barley. Our results suggest that VOCs and plant-plant interactions are relevant for possible crop protection strategies priming defence responses in barley.
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Affiliation(s)
- Alessandro Brambilla
- Helmholtz Zentrum München, Institute of Biochemical Plant Pathology, Neuherberg, Germany
| | - Anna Sommer
- Helmholtz Zentrum München, Institute of Biochemical Plant Pathology, Neuherberg, Germany
| | - Andrea Ghirardo
- Helmholtz Zentrum München, Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation, Neuherberg, Germany
| | - Marion Wenig
- Helmholtz Zentrum München, Institute of Biochemical Plant Pathology, Neuherberg, Germany
| | - Claudia Knappe
- Helmholtz Zentrum München, Institute of Biochemical Plant Pathology, Neuherberg, Germany
| | - Baris Weber
- Helmholtz Zentrum München, Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation, Neuherberg, Germany
| | - Melissa Amesmaier
- Helmholtz Zentrum München, Institute of Biochemical Plant Pathology, Neuherberg, Germany
| | - Miriam Lenk
- Helmholtz Zentrum München, Institute of Biochemical Plant Pathology, Neuherberg, Germany
| | - Jörg-Peter Schnitzler
- Helmholtz Zentrum München, Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation, Neuherberg, Germany
| | - A Corina Vlot
- Helmholtz Zentrum München, Institute of Biochemical Plant Pathology, Neuherberg, Germany
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18
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Ma Y, Freitas H, Dias MC. Strategies and prospects for biostimulants to alleviate abiotic stress in plants. FRONTIERS IN PLANT SCIENCE 2022; 13:1024243. [PMID: 36618626 PMCID: PMC9815798 DOI: 10.3389/fpls.2022.1024243] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 11/28/2022] [Indexed: 05/13/2023]
Abstract
Global climate change-induced abiotic stresses (e.g., drought, salinity, extreme temperatures, heavy metals, and UV radiation) have destabilized the fragile agroecosystems and impaired plant performance and thereby reducing crop productivity and quality. Biostimulants, as a promising and eco-friendly approach, are widely used to address environmental concerns and fulfill the need for developing sustainable/modern agriculture. Current knowledge revealed that plant and animal derived stimulants (e.g., seaweeds and phytoextracts, humic substances, and protein hydrolysate) as well as microbial stimulants (e.g., plant beneficial bacteria or fungi) have great potential to elicit plant tolerance to various abiotic stresses and thus enhancing plant growth and performance-related parameters (such as root growth/diameter, flowering, nutrient use efficiency/translocation, soil water holding capacity, and microbial activity). However, to successfully implement biostimulant-based agriculture in the field under changing climate, the understanding of agricultural functions and action mechanism of biostimulants coping with various abiotic stresses at physicochemical, metabolic, and molecular levels is needed. Therefore, this review attempts to unravel the underlying mechanisms of action mediated by diverse biostimulants in relation to abiotic stress alleviation as well as to discuss the current challenges in their commercialization and implementation in agriculture under changing climate conditions.
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19
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Bhupenchandra I, Chongtham SK, Devi EL, R. R, Choudhary AK, Salam MD, Sahoo MR, Bhutia TL, Devi SH, Thounaojam AS, Behera C, M. N. H, Kumar A, Dasgupta M, Devi YP, Singh D, Bhagowati S, Devi CP, Singh HR, Khaba CI. Role of biostimulants in mitigating the effects of climate change on crop performance. FRONTIERS IN PLANT SCIENCE 2022; 13:967665. [PMID: 36340395 PMCID: PMC9634556 DOI: 10.3389/fpls.2022.967665] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 09/12/2022] [Indexed: 05/13/2023]
Abstract
Climate change is a critical yield-limiting factor that has threatened the entire global crop production system in the present scenario. The use of biostimulants in agriculture has shown tremendous potential in combating climate change-induced stresses such as drought, salinity, temperature stress, etc. Biostimulants are organic compounds, microbes, or amalgamation of both that could regulate plant growth behavior through molecular alteration and physiological, biochemical, and anatomical modulations. Their nature is diverse due to the varying composition of bioactive compounds, and they function through various modes of action. To generate a successful biostimulatory action on crops under different parameters, a multi-omics approach would be beneficial to identify or predict its outcome comprehensively. The 'omics' approach has greatly helped us to understand the mode of action of biostimulants on plants at cellular levels. Biostimulants acting as a messenger in signal transduction resembling phytohormones and other chemical compounds and their cross-talk in various abiotic stresses help us design future crop management under changing climate, thus, sustaining food security with finite natural resources. This review article elucidates the strategic potential and prospects of biostimulants in mitigating the adverse impacts of harsh environmental conditions on plants.
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Affiliation(s)
- Ingudam Bhupenchandra
- Indian Council of Agricultural Research (ICAR)–Krishi Vigyan Kendra Tamenglong, Indian Council of Agricultural Research (ICAR) Research Complex for NorthEastern Hill (NEH) Region, Manipur Centre, Imphal, Manipur, India
- *Correspondence: Anil Kumar Choudhary, ; Harish. M. N., ; Ingudam Bhupenchandra,
| | - Sunil Kumar Chongtham
- Multi Technology Testing Centre and Vocational Training Centre, College of Agricultural Engineering and Post Harvest Technology (CAEPHT), Central Agricultural University (CAU), Ranipool, Sikkim, India
| | - Elangbam Lamalakshmi Devi
- Indian Council of Agricultural Research (ICAR)-Research Complex (RC) for North Eastern Hill (NEH) Region, Sikkim Centre, Tadong, Sikkim, India
| | - Ramesh R.
- Division of Plant Physiology, Indian Council of Agricultural Research (ICAR)–Indian Agricultural Research Institute, New Delhi, India
| | - Anil Kumar Choudhary
- Division of Agronomy, Indian Council of Agricultural Research - Indian Agricultural Research Institute, New Delhi, India
- Division of Crop Production, Indian Council of Agricultural Research - Central Potato Research Institute, Shimla, India
- *Correspondence: Anil Kumar Choudhary, ; Harish. M. N., ; Ingudam Bhupenchandra,
| | | | - Manas Ranjan Sahoo
- Central Horticultural Experiment Station, Indian Council of Agricultural Research (ICAR)–Indian Institute of Horticultural Research, Bhubaneswar, Odisha, India
| | - Tshering Lhamu Bhutia
- Indian Council of Agricultural Research (ICAR)-Research Complex (RC) for North Eastern Hill (NEH) Region, Sikkim Centre, Tadong, Sikkim, India
| | - Soibam Helena Devi
- Department of Crop Physiology, Assam Agricultural University, Jorhat, Assam, India
| | - Amarjit Singh Thounaojam
- Medicinal and Aromatic Plants Research Station, Anand Agricultural University, Anand, Gujarat, India
| | - Chandana Behera
- Department of Plant Breeding and Genetics, College of Agriculture, OUAT, Bhawanipatna, India
| | - Harish. M. N.
- Indian Council of Agricultural Research (ICAR)–Indian Institute of Horticultural Research, Farm Science Centre, Gonikoppal, Karnataka, India
- *Correspondence: Anil Kumar Choudhary, ; Harish. M. N., ; Ingudam Bhupenchandra,
| | - Adarsh Kumar
- Indian Council of Agricultural Research: National Bureau of Agriculturally Important Microorganism, Mau, India
| | - Madhumita Dasgupta
- Indian Council of Agricultural Research (ICAR)–Research Complex for NorthEastern Hill (NEH) Region, Manipur Centre, Imphal, Manipur, India
| | - Yumnam Prabhabati Devi
- Indian Council of Agricultural Research (ICAR)-Krishi Vigyan Kendra, Chandel, Indian Council of Agricultural Research (ICAR) Research Complex for NorthEastern Hill (NEH) Region, Manipur Centre, Imphal, Manipur, India
| | - Deepak Singh
- Krishi Vigyan Kendra Bhopal, Indian Council of Agricultural Research (ICAR) Central Institute of Agricultural Engineering, Bhopal, Madhya Pradesh, India
| | - Seema Bhagowati
- Department of Soil Science, Assam Agricultural University, Jorhat, Assam, India
| | - Chingakham Premabati Devi
- Indian Council of Agricultural Research (ICAR)–Research Complex for NorthEastern Hill (NEH) Region, Manipur Centre, Imphal, Manipur, India
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Agoussar A, Azarbad H, Tremblay J, Yergeau É. The resistance of the wheat microbial community to water stress is more influenced by plant compartment than reduced water availability. FEMS Microbiol Ecol 2021; 97:6427345. [PMID: 34791186 DOI: 10.1093/femsec/fiab149] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 11/11/2021] [Indexed: 11/13/2022] Open
Abstract
Drought is a serious menace to agriculture across the world. However, it is still not clear how this will affect crop-associated microbial communities. Here, we experimentally manipulated precipitation in the field for two years and compared the bacterial communities associated with leaves, roots, and rhizosphere soils of two different wheat genotypes. The bacterial 16S rRNA gene was amplified and sequenced, while 542 microorganisms were isolated and screened for their tolerance to osmotic stress. The bacterial community was not significantly affected by the precipitation manipulation treatments but differed drastically from one plant compartment to the other. Forty-four isolates, mostly bacteria, showed high levels of resistance to osmotic stress by growing in liquid medium supplemented with 30% polyethylene glycol. The Actinobacteria were overrepresented among these isolates, and in contrast to our expectation, precipitation treatments did not influence the odds of isolating osmotic stress-resistant bacteria. However, the odds were significantly higher in the leaves as compared to the roots, the rhizosphere, or the seeds. Our results suggest that isolation efforts for wheat-compatible water stress resistant bacteria should be targeted at the leaf endosphere and that short-term experimental manipulation of precipitation does not result in a more resistant community.
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Affiliation(s)
- Asmaâ Agoussar
- Centre Armand-Frappier Santé Biotechnologie, Institut national de la recherche scientifique, 531 boulevard des Prairies, Laval, QC H7V 1B7, Canada
| | - Hamed Azarbad
- Department of Biology, Philipps-University Marburg, Karl-von-Frisch-Str. 8, 35032 Marburg, Germany
| | - Julien Tremblay
- Energy, Mining and Environment, National Research Council Canada, 6100 avenue Royalmount, Montreal, QC H4P 2R2, Canada
| | - Étienne Yergeau
- Centre Armand-Frappier Santé Biotechnologie, Institut national de la recherche scientifique, 531 boulevard des Prairies, Laval, QC H7V 1B7, Canada
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21
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Bárek V, Kováčová M, Kišš V, Paulen O. Water Regime Monitoring of the Royal Walnut ( Juglans regia L.) Using Sap Flow and Dendrometric Measurements. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10112354. [PMID: 34834717 PMCID: PMC8622544 DOI: 10.3390/plants10112354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/14/2021] [Accepted: 10/18/2021] [Indexed: 06/13/2023]
Abstract
Changes in the distribution of annual rainfall totals, together with the increase in temperature over the last 40 years, are causing more frequent periods of drought, and plants are more often exposed to water stress. The aim of this study was to monitor the effect of different water regimes (irrigated and non-irrigated) of individuals of walnut tree (Juglans regia L.) in a private orchard located in the West of Slovakia. Our research was focused on dendrometric and sap flow measurements in the period from 28 March to 2 June 2019. The results showed differences in the sap flow of walnut trees during the budbreak period: when trees were irrigated, sap flow in the diurnal cycle was around 130 g·h-1 (20.48%), higher than in the non-irrigated treatment. Dendrometric differences between the irrigated and non-irrigated treatments were not significant. The sap flow data in the flowering period of the irrigated variant were slightly higher at 150 g·h-1 (35.62%) than non-irrigated. Dendrometric differences were more significant when the difference between the variants was more than 1.5 mm. Continuation of this research and analysis of the data obtained in the coming years will allow us to evaluate the effects of the environment on fruit trees in the long term.
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Affiliation(s)
- Viliam Bárek
- Department of Water Resources and Environmental Engineering, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia;
| | - Martina Kováčová
- Department of Water Resources and Environmental Engineering, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia;
| | - Vladimír Kišš
- Research Centre Agrobiotech, Slovak University of Agriculture, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia;
| | - Oleg Paulen
- Faculty of Horticulture and Landscape Engineering, Institute of Horticulture, Slovak University of Agriculture, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia;
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22
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Microbial biostimulants as a sustainable approach to improve the functional quality in plant-based foods: a review. Curr Opin Food Sci 2021. [DOI: 10.1016/j.cofs.2021.05.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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23
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Cellini A, Spinelli F, Donati I, Ryu CM, Kloepper JW. Bacterial volatile compound-based tools for crop management and quality. TRENDS IN PLANT SCIENCE 2021; 26:968-983. [PMID: 34147324 DOI: 10.1016/j.tplants.2021.05.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 05/13/2021] [Accepted: 05/19/2021] [Indexed: 05/20/2023]
Abstract
Bacteria produce a huge diversity of metabolites, many of which mediate ecological relations. Among these, volatile compounds cause broad-range effects at low doses and, therefore, may be exploited for plant defence strategies and agricultural production, but such applications are still in their early development. Here, we review the latest technologies involving the use of bacterial volatile compounds for phytosanitary inspection, biological control, plant growth promotion, and crop quality. We highlight a variety of effects with a potential applicative interest, based on either live biocontrol and/or biostimulant agents, or the isolated metabolites responsible for the interaction with hosts or competitors. Future agricultural technologies may benefit from the development of new analytical tools to understand bacterial interactions with the environment.
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Affiliation(s)
- Antonio Cellini
- Department of Agricultural and Food Sciences, Alma Mater Studiorum - University of Bologna, Bologna, Italy
| | - Francesco Spinelli
- Department of Agricultural and Food Sciences, Alma Mater Studiorum - University of Bologna, Bologna, Italy.
| | - Irene Donati
- Department of Agricultural and Food Sciences, Alma Mater Studiorum - University of Bologna, Bologna, Italy
| | - Choong-Min Ryu
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, South Korea
| | - Joseph W Kloepper
- Department of Entomology and Plant Pathology, Auburn University, Auburn, AL, USA
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24
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Sangiorgio D, Cellini A, Spinelli F, Farneti B, Khomenko I, Muzzi E, Savioli S, Pastore C, Rodriguez-Estrada MT, Donati I. Does Organic Farming Increase Raspberry Quality, Aroma and Beneficial Bacterial Biodiversity? Microorganisms 2021; 9:microorganisms9081617. [PMID: 34442697 PMCID: PMC8400319 DOI: 10.3390/microorganisms9081617] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 06/24/2021] [Accepted: 07/02/2021] [Indexed: 12/27/2022] Open
Abstract
Plant-associated microbes can shape plant phenotype, performance, and productivity. Cultivation methods can influence the plant microbiome structure and differences observed in the nutritional quality of differently grown fruits might be due to variations in the microbiome taxonomic and functional composition. Here, the influence of organic and integrated pest management (IPM) cultivation on quality, aroma and microbiome of raspberry (Rubus idaeus L.) fruits was evaluated. Differences in the fruit microbiome of organic and IPM raspberry were examined by next-generation sequencing and bacterial isolates characterization to highlight the potential contribution of the resident-microflora to fruit characteristics and aroma. The cultivation method strongly influenced fruit nutraceutical traits, aroma and epiphytic bacterial biocoenosis. Organic cultivation resulted in smaller fruits with a higher anthocyanidins content and lower titratable acidity content in comparison to IPM berries. Management practices also influenced the amounts of acids, ketones, aldehydes and monoterpenes, emitted by fruits. Our results suggest that the effects on fruit quality could be related to differences in the population of Gluconobacter, Sphingomonas, Rosenbergiella, Brevibacillus and Methylobacterium on fruit. Finally, changes in fruit aroma can be partly explained by volatile organic compounds (VOCs) emitted by key bacterial genera characterizing organic and IPM raspberry fruits.
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Affiliation(s)
- Daniela Sangiorgio
- Department of Agricultural and Food Sciences, University of Bologna, 40127 Bologna, Italy; (D.S.); (A.C.); (E.M.); (S.S.); (C.P.); (M.T.R.-E.); (I.D.)
| | - Antonio Cellini
- Department of Agricultural and Food Sciences, University of Bologna, 40127 Bologna, Italy; (D.S.); (A.C.); (E.M.); (S.S.); (C.P.); (M.T.R.-E.); (I.D.)
| | - Francesco Spinelli
- Department of Agricultural and Food Sciences, University of Bologna, 40127 Bologna, Italy; (D.S.); (A.C.); (E.M.); (S.S.); (C.P.); (M.T.R.-E.); (I.D.)
- Correspondence: ; Tel.: +39-051-2096443
| | - Brian Farneti
- Research and Innovation Center, Fondazione Edmund Mach, 38010 San Michele all’Adige, Italy; (B.F.); (I.K.)
| | - Iuliia Khomenko
- Research and Innovation Center, Fondazione Edmund Mach, 38010 San Michele all’Adige, Italy; (B.F.); (I.K.)
| | - Enrico Muzzi
- Department of Agricultural and Food Sciences, University of Bologna, 40127 Bologna, Italy; (D.S.); (A.C.); (E.M.); (S.S.); (C.P.); (M.T.R.-E.); (I.D.)
| | - Stefano Savioli
- Department of Agricultural and Food Sciences, University of Bologna, 40127 Bologna, Italy; (D.S.); (A.C.); (E.M.); (S.S.); (C.P.); (M.T.R.-E.); (I.D.)
| | - Chiara Pastore
- Department of Agricultural and Food Sciences, University of Bologna, 40127 Bologna, Italy; (D.S.); (A.C.); (E.M.); (S.S.); (C.P.); (M.T.R.-E.); (I.D.)
| | - María Teresa Rodriguez-Estrada
- Department of Agricultural and Food Sciences, University of Bologna, 40127 Bologna, Italy; (D.S.); (A.C.); (E.M.); (S.S.); (C.P.); (M.T.R.-E.); (I.D.)
| | - Irene Donati
- Department of Agricultural and Food Sciences, University of Bologna, 40127 Bologna, Italy; (D.S.); (A.C.); (E.M.); (S.S.); (C.P.); (M.T.R.-E.); (I.D.)
- Zespri Fresh Produce, 40132 Bologna, Italy
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25
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Castiglione AM, Mannino G, Contartese V, Bertea CM, Ertani A. Microbial Biostimulants as Response to Modern Agriculture Needs: Composition, Role and Application of These Innovative Products. PLANTS 2021; 10:plants10081533. [PMID: 34451578 PMCID: PMC8400793 DOI: 10.3390/plants10081533] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/23/2021] [Accepted: 07/24/2021] [Indexed: 01/09/2023]
Abstract
An increasing need for a more sustainable agriculturally-productive system is required in order to preserve soil fertility and reduce soil biodiversity loss. Microbial biostimulants are innovative technologies able to ensure agricultural yield with high nutritional values, overcoming the negative effects derived from environmental changes. The aim of this review was to provide an overview on the research related to plant growth promoting microorganisms (PGPMs) used alone, in consortium, or in combination with organic matrices such as plant biostimulants (PBs). Moreover, the effectiveness and the role of microbial biostimulants as a biological tool to improve fruit quality and limit soil degradation is discussed. Finally, the increased use of these products requires the achievement of an accurate selection of beneficial microorganisms and consortia, and the ability to prepare for future agriculture challenges. Hence, the implementation of the microorganism positive list provided by EU (2019/1009), is desirable.
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Affiliation(s)
- Adele M. Castiglione
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of Torino, 10135 Turin, Italy; (A.M.C.); (G.M.)
- Green Has Italia S.P.A, 12043 Canale, Italy;
| | - Giuseppe Mannino
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of Torino, 10135 Turin, Italy; (A.M.C.); (G.M.)
| | | | - Cinzia M. Bertea
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of Torino, 10135 Turin, Italy; (A.M.C.); (G.M.)
- Correspondence: ; Tel.: +39-0116706361
| | - Andrea Ertani
- Department of Agricultural Forest and Food Sciences, University of Torino, 10095 Turin, Italy;
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26
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Riva V, Mapelli F, Dragonetti G, Elfahl M, Vergani L, Crepaldi P, La Maddalena N, Borin S. Bacterial Inoculants Mitigating Water Scarcity in Tomato: The Importance of Long-Term in vivo Experiments. Front Microbiol 2021; 12:675552. [PMID: 34211447 PMCID: PMC8239394 DOI: 10.3389/fmicb.2021.675552] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 04/30/2021] [Indexed: 11/13/2022] Open
Abstract
Global population growth and climate change raise a challenge to agriculture, which, combined with the issues concerning the use of chemical fertilizers, have generated increasing attention in the use of plant-associated bacteria as a sustainable strategy in agri-food systems. The objective of this study is to evaluate the ability of five bacterial strains, previously isolated from the rhizosphere or endosphere of plants adapted to harsh environmental conditions, to act as potential plant biofertilizers in different conditions of water availability. The strain biosafety for a deliberate environmental release was investigated through a literature survey and antibiotic resistance testing. The selected strains were first characterized for their plant growth–promoting (PGP) and rhizocompetence-related traits through in vitro assays and then on short-term in vivo experiments on tomato plants. A long-term greenhouse experiment was further conducted to monitor the PGP effect of the bacteria during the entire life cycle of tomato plants subjected to full irrigation or to severe water deficit conditions, aiming to assess their actual effect on plant productivity, which is the ultimate target of the agricultural sector. Some of the strains showed a potential in improving water use efficiency and mitigating plant water stress. Under severe irrigation deficit, four of the tested strains, Micrococcus yunnanensis M1, Bacillus simplex RP-26, Pseudomonas stutzeri SR7-77, and Paenarthrobacter nitroguajacolicus 2–50, significantly increased the number of productive plants in comparison to non-bacterized control ones. Two of them, Bacillus simplex RP-26 and Paenarthrobacter nitroguajacolicus 2–50, demonstrated also, under full irrigation, to significantly improve the water productivity in comparison with non-bacterized plants. Despite all the strains showed promising PGP potential in short-term assays, the positive effect of the bacterial inoculants on plant physiology and fruit yield was observed in some cases but never corroborated by statistical significance. These results highlight the importance of performing long-term in vivo experiments to define the real PGP ability of a bacterial inoculant to positively impact plant production.
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Affiliation(s)
- Valentina Riva
- Department of Food, Environmental, and Nutritional Sciences, Università degli Studi di Milano, Milan, Italy
| | - Francesca Mapelli
- Department of Food, Environmental, and Nutritional Sciences, Università degli Studi di Milano, Milan, Italy
| | - Giovanna Dragonetti
- Department of Land and Water Division, Mediterranean Agronomic Institute of Bari, IAMB, Bari, Italy
| | - Mustafa Elfahl
- Department of Land and Water Division, Mediterranean Agronomic Institute of Bari, IAMB, Bari, Italy
| | - Lorenzo Vergani
- Department of Food, Environmental, and Nutritional Sciences, Università degli Studi di Milano, Milan, Italy
| | - Paola Crepaldi
- Department of Agricultural and Environmental Sciences - Production, Landscape, Agroenergy, Università degli Studi di Milano, Milan, Italy
| | - Nicola La Maddalena
- Department of Land and Water Division, Mediterranean Agronomic Institute of Bari, IAMB, Bari, Italy
| | - Sara Borin
- Department of Food, Environmental, and Nutritional Sciences, Università degli Studi di Milano, Milan, Italy
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27
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Bacterial Plant Biostimulants: A Sustainable Way towards Improving Growth, Productivity, and Health of Crops. SUSTAINABILITY 2021. [DOI: 10.3390/su13052856] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This review presents a comprehensive and systematic study of the field of bacterial plant biostimulants and considers the fundamental and innovative principles underlying this technology. Plant biostimulants are an important tool for modern agriculture as part of an integrated crop management (ICM) system, helping make agriculture more sustainable and resilient. Plant biostimulants contain substance(s) and/or microorganisms whose function when applied to plants or the rhizosphere is to stimulate natural processes to enhance plant nutrient uptake, nutrient use efficiency, tolerance to abiotic stress, biocontrol, and crop quality. The use of plant biostimulants has gained substantial and significant heed worldwide as an environmentally friendly alternative to sustainable agricultural production. At present, there is an increasing curiosity in industry and researchers about microbial biostimulants, especially bacterial plant biostimulants (BPBs), to improve crop growth and productivity. The BPBs that are based on PGPR (plant growth-promoting rhizobacteria) play plausible roles to promote/stimulate crop plant growth through several mechanisms that include (i) nutrient acquisition by nitrogen (N2) fixation and solubilization of insoluble minerals (P, K, Zn), organic acids and siderophores; (ii) antimicrobial metabolites and various lytic enzymes; (iii) the action of growth regulators and stress-responsive/induced phytohormones; (iv) ameliorating abiotic stress such as drought, high soil salinity, extreme temperatures, oxidative stress, and heavy metals by using different modes of action; and (v) plant defense induction modes. Presented here is a brief review emphasizing the applicability of BPBs as an innovative exertion to fulfill the current food crisis.
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28
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The Foliar Application of Rice Phyllosphere Bacteria induces Drought-Stress Tolerance in Oryza sativa (L.). PLANTS 2021; 10:plants10020387. [PMID: 33670503 PMCID: PMC7923115 DOI: 10.3390/plants10020387] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/12/2021] [Accepted: 02/14/2021] [Indexed: 01/24/2023]
Abstract
This study assessed the potential of Bacillus endophyticus PB3, Bacillus altitudinis PB46, and Bacillus megaterium PB50 to induce drought tolerance in a susceptible rice cultivar. The leaves of the potted rice plants subjected to physical drought stress for 10 days during the flowering stage were inoculated with single-strain suspensions. Control pots of irrigated and drought-stressed plants were included in the experiment for comparison. In all treatments, the plant stress-related physiochemical and biochemical changes were examined and the expression of six stress-responsive genes in rice leaves was evaluated. The colonization potential on the surface of the rice leaves and stomata of the most successful strain in terms of induced tolerance was confirmed in the gnotobiotic experiment. The plants sprayed with B. megaterium PB50 showed an elevated stress tolerance based on their higher relative water content and increased contents of total sugars, proteins, proline, phenolics, potassium, calcium, abscisic acid, and indole acetic acid, as well as a high expression of stress-related genes (LEA, RAB16B, HSP70, SNAC1, and bZIP23). Moreover, this strain improved yield parameters compared to other treatments and also confirmed its leaf surface colonization. Overall, this study indicates that the foliar application of B. megaterium PB50 can induce tolerance to drought stress in rice.
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Jiménez-Arias D, García-Machado FJ, Morales-Sierra S, García-García AL, Herrera AJ, Valdés F, Luis JC, Borges AA. A Beginner's Guide to Osmoprotection by Biostimulants. PLANTS (BASEL, SWITZERLAND) 2021; 10:363. [PMID: 33668668 PMCID: PMC7917748 DOI: 10.3390/plants10020363] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/08/2021] [Accepted: 02/10/2021] [Indexed: 05/04/2023]
Abstract
Water is indispensable for the life of any organism on Earth. Consequently, osmotic stress due to salinity and drought is the greatest threat to crop productivity. Ongoing climate change includes rising temperatures and less precipitation over large areas of the planet. This is leading to increased vulnerability to the drought conditions that habitually threaten food security in many countries. Such a scenario poses a daunting challenge for scientists: the search for innovative solutions to save water and cultivate under water deficit. A search for formulations including biostimulants capable of improving tolerance to this stress is a promising specific approach. This review updates the most recent state of the art in the field.
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Affiliation(s)
- David Jiménez-Arias
- Chemical Plant Defence Activators Group, Department of Agrobiology, IPNA-CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Canary Islands, Spain; (F.J.G.-M.); (A.L.G.-G.); (A.J.H.)
| | - Francisco J. García-Machado
- Chemical Plant Defence Activators Group, Department of Agrobiology, IPNA-CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Canary Islands, Spain; (F.J.G.-M.); (A.L.G.-G.); (A.J.H.)
- Applied Plant Biology Group (GBVA), Department of Botany, Ecology and Plant Physiology–Faculty of Pharmacy, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez s/n, 38071 La Laguna, Tenerife, Canary Islands, Spain; (S.M.-S.); (F.V.); (J.C.L.)
| | - Sarai Morales-Sierra
- Applied Plant Biology Group (GBVA), Department of Botany, Ecology and Plant Physiology–Faculty of Pharmacy, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez s/n, 38071 La Laguna, Tenerife, Canary Islands, Spain; (S.M.-S.); (F.V.); (J.C.L.)
| | - Ana L. García-García
- Chemical Plant Defence Activators Group, Department of Agrobiology, IPNA-CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Canary Islands, Spain; (F.J.G.-M.); (A.L.G.-G.); (A.J.H.)
- Applied Plant Biology Group (GBVA), Department of Botany, Ecology and Plant Physiology–Faculty of Pharmacy, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez s/n, 38071 La Laguna, Tenerife, Canary Islands, Spain; (S.M.-S.); (F.V.); (J.C.L.)
| | - Antonio J. Herrera
- Chemical Plant Defence Activators Group, Department of Agrobiology, IPNA-CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Canary Islands, Spain; (F.J.G.-M.); (A.L.G.-G.); (A.J.H.)
| | - Francisco Valdés
- Applied Plant Biology Group (GBVA), Department of Botany, Ecology and Plant Physiology–Faculty of Pharmacy, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez s/n, 38071 La Laguna, Tenerife, Canary Islands, Spain; (S.M.-S.); (F.V.); (J.C.L.)
| | - Juan C. Luis
- Applied Plant Biology Group (GBVA), Department of Botany, Ecology and Plant Physiology–Faculty of Pharmacy, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez s/n, 38071 La Laguna, Tenerife, Canary Islands, Spain; (S.M.-S.); (F.V.); (J.C.L.)
| | - Andrés A. Borges
- Chemical Plant Defence Activators Group, Department of Agrobiology, IPNA-CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Canary Islands, Spain; (F.J.G.-M.); (A.L.G.-G.); (A.J.H.)
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30
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García-García AL, García-Machado FJ, Borges AA, Morales-Sierra S, Boto A, Jiménez-Arias D. Pure Organic Active Compounds Against Abiotic Stress: A Biostimulant Overview. FRONTIERS IN PLANT SCIENCE 2020; 11:575829. [PMID: 33424879 PMCID: PMC7785943 DOI: 10.3389/fpls.2020.575829] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 10/30/2020] [Indexed: 05/21/2023]
Abstract
Biostimulants (BSs) are probably one of the most promising alternatives nowadays to cope with yield losses caused by plant stress, which are intensified by climate change. Biostimulants comprise many different compounds with positive effects on plants, excluding pesticides and chemical fertilisers. Usually mixtures such as lixiviates from proteins or algal extracts have been used, but currently companies are interested in more specific compounds that are capable of increasing tolerance against abiotic stress. Individual application of a pure active compound offers researchers the opportunity to better standarise formulations, learn more about the plant defence process itself and assist the agrochemical industry in the development of new products. This review attempts to summarise the state of the art regarding various families of organic compounds and their mode/mechanism of action as BSs, and how they can help maximise agricultural yields under stress conditions aggravated by climate change.
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Affiliation(s)
- Ana L. García-García
- Grupo de Agrobiotecnología, Departamento de Ciencias de la Vida y de la Tierra, Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas, San Cristobal de La Laguna, Spain
- Grupo Síntesis de Fármacos y Compuestos Bioactivos, Departamento de Química de Productos Naturales y Sintéticos Bioactivos, Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas, San Cristobal de La Laguna, Spain
- Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Francisco J. García-Machado
- Grupo de Agrobiotecnología, Departamento de Ciencias de la Vida y de la Tierra, Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas, San Cristobal de La Laguna, Spain
- Grupo Síntesis de Fármacos y Compuestos Bioactivos, Departamento de Química de Productos Naturales y Sintéticos Bioactivos, Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas, San Cristobal de La Laguna, Spain
- Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Andrés A. Borges
- Grupo de Agrobiotecnología, Departamento de Ciencias de la Vida y de la Tierra, Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas, San Cristobal de La Laguna, Spain
| | | | - Alicia Boto
- Grupo Síntesis de Fármacos y Compuestos Bioactivos, Departamento de Química de Productos Naturales y Sintéticos Bioactivos, Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas, San Cristobal de La Laguna, Spain
| | - David Jiménez-Arias
- Grupo de Agrobiotecnología, Departamento de Ciencias de la Vida y de la Tierra, Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas, San Cristobal de La Laguna, Spain
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31
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The Importance of Microbial Inoculants in a Climate-Changing Agriculture in Eastern Mediterranean Region. ATMOSPHERE 2020. [DOI: 10.3390/atmos11101136] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Climate change has gained importance due to its severe consequences for many aspects of life. Increasing temperature, drought and greenhouse gases affect directly or indirectly the productivity of agricultural and natural ecosystems as well as human health. The nutrient supply capacity of the soil is diminishing, while food requirements for the growing population are increasing. The ongoing application of agrochemicals results in adverse effects on ecosystem functioning and food chain. Now, more than ever, there is a need to mitigate the effects of agricultural activities on climate change using environmentally friendly techniques. The role of plant beneficial microorganisms on this global challenge is increasingly being explored, and there is strong evidence that could be important. The use of functional microbial guilds forms an alternative or even a supplementary approach to common agricultural practices, due to their ability to act as biofertilizers and promote plant growth. Application of microbial inocula has a significantly lower impact on the environment compared to chemical inputs, while the agricultural sector will financially benefit, and consumers will have access to quality products. Microbial inoculants could play an important role in agricultural stress management and ameliorate the negative impacts of climate change. This short review highlights the role of microbes in benefiting agricultural practices against climate-changing conditions. In particular, the main microbial plant growth-promoting functional traits that are related to climate change are presented and discussed. The importance of microbial inoculants’ multifunctionality is debated, while future needs and challenges are also highlighted.
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Achieving similar root microbiota composition in neighbouring plants through airborne signalling. ISME JOURNAL 2020; 15:397-408. [PMID: 32973341 PMCID: PMC8027813 DOI: 10.1038/s41396-020-00759-z] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 08/07/2020] [Accepted: 08/24/2020] [Indexed: 12/02/2022]
Abstract
The ability to recognize and respond to environmental signals is essential for plants. In response to environmental changes, the status of a plant is transmitted to other plants in the form of signals such as volatiles. Root-associated bacteria trigger the release of plant volatile organic compounds (VOCs). However, the impact of VOCs on the rhizosphere microbial community of neighbouring plants is not well understood. Here, we investigated the effect of VOCs on the rhizosphere microbial community of tomato plants inoculated with a plant growth-promoting rhizobacterium Bacillus amyloliquefaciens strain GB03 and that of their neighbouring plants. Interestingly, high similarity (up to 69%) was detected in the rhizosphere microbial communities of the inoculated and neighbouring plants. Leaves of the tomato plant treated with strain GB03-released β-caryophyllene as a signature VOC, which elicited the release of a large amount of salicylic acid (SA) in the root exudates of a neighbouring tomato seedling. The exposure of tomato leaves to β-caryophyllene resulted in the secretion of SA from the root. Our results demonstrate for the first time that the composition of the rhizosphere microbiota in surrounding plants is synchronized through aerial signals from plants.
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