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Lazarus HPS, Easwaran N. Molecular insights into PGPR fluorescent Pseudomonads complex mediated intercellular and interkingdom signal transduction mechanisms in promoting plant's immunity. Res Microbiol 2024; 175:104218. [PMID: 38879059 DOI: 10.1016/j.resmic.2024.104218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 05/13/2024] [Accepted: 06/07/2024] [Indexed: 06/23/2024]
Abstract
The growth-promoting and immune modulatory properties of different strains of plant growth promoting rhizobacteria (PGPR) fluorescent Pseudomonads complex (PFPC) can be explored to combat food security challenges. These PFPC prime plants through induced systemic resistance, fortify plants to overcome future pathogen-mediated vulnerability by eliciting robust systemic acquired resistance through regulation by nonexpressor of pathogenesis-related genes 1. Moreover, outer membrane vesicles released from Pseudomonas fluorescens also elicit a broad spectrum of immune responses, presenting a rapid viable alternative to whole cells. Thus, PFPC can help the host to maintain an equilibrium between growth and immunity, ultimately leads to increased crop yield.
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Affiliation(s)
| | - Nalini Easwaran
- School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India.
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2
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Cabre L, Jing L, Makechemu M, Heluin K, El Khamlichi S, Leprince J, Kiefer-Meyer MC, Pluchon S, Mollet JC, Zipfel C, Nguema-Ona E. Additive and Specific Effects of Elicitor Treatments on the Metabolic Profile of Arabidopsis thaliana. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2024; 37:112-126. [PMID: 37903461 DOI: 10.1094/mpmi-04-23-0051-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2023]
Abstract
Several elicitors of plant defense have been identified and numerous efforts to use them in the field have been made. Exogenous elicitor treatments mimic the in planta activation of pattern-triggered immunity (PTI), which relies on the perception of pathogen-associated molecular patterns (PAMPs) such as bacterial flg22 or fungal chitins. Early transcriptional responses to distinct PAMPs are mostly overlapping, regardless of the elicitor being used. However, it remains poorly known if the same patterns are observed for metabolites and proteins produced later during PTI. In addition, little is known about the impact of a combination of elicitors on PTI and the level of induced resistance to pathogens. Here, we monitored Arabidopsis thaliana resistance to the bacterial pathogen Pseudomonas syringae pv. tomato DC3000 (Pto DC3000) following application of flg22 and chitosan elicitors, used individually or in combination. A slight, but not statistically significant increase in induced resistance was observed when the elicitors were applied together when compared with individual treatments. We investigated the effect of these treatments on the metabolome by using an untargeted analysis. We found that the combination of flg22 and chitosan impacted a higher number of metabolites and deregulated specific metabolic pathways compared with the elicitors individually. These results contribute to a better understanding of plant responses to elicitors, which might help better rationalize their use in the field. [Formula: see text] Copyright © 2024 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Affiliation(s)
- Lisa Cabre
- Centre Mondial de l'Innovation-Groupe Roullier (CMI-Roullier), Laboratoire de Nutrition Végétale, Saint Malo, F-35400, France
| | - Lun Jing
- Centre Mondial de l'Innovation-Groupe Roullier (CMI-Roullier), Plateforme de Chimie et Bio-Analyse, Saint Malo, F-35400, France
| | - Moffat Makechemu
- Department of Plant and Microbial Biology, Zurich-Basel Plant Science Center, University of Zürich, CH-8008 Zürich, Switzerland
| | - Kylhan Heluin
- Université de Rouen Normandie, GLYCOMEV UR 4358, SFR Normandie Végétal FED 4277, Innovation Chimie Carnot, RMT BESTIM, GDR Chémobiologie, IRIB, F-76000 Rouen, France
| | - Sarah El Khamlichi
- Université de Rouen Normandie, GLYCOMEV UR 4358, SFR Normandie Végétal FED 4277, Innovation Chimie Carnot, RMT BESTIM, GDR Chémobiologie, IRIB, F-76000 Rouen, France
| | - Jérôme Leprince
- Université de Rouen Normandie, CNRS, INSERM, HERACLES US 51 UAR 2026, PRIMACEN, IRIB, F-76000 Rouen, France
| | - Marie Christine Kiefer-Meyer
- Université de Rouen Normandie, GLYCOMEV UR 4358, SFR Normandie Végétal FED 4277, Innovation Chimie Carnot, RMT BESTIM, GDR Chémobiologie, IRIB, F-76000 Rouen, France
| | - Sylvain Pluchon
- Centre Mondial de l'Innovation-Groupe Roullier (CMI-Roullier), Laboratoire de Nutrition Végétale, Saint Malo, F-35400, France
| | - Jean-Claude Mollet
- Université de Rouen Normandie, GLYCOMEV UR 4358, SFR Normandie Végétal FED 4277, Innovation Chimie Carnot, RMT BESTIM, GDR Chémobiologie, IRIB, F-76000 Rouen, France
| | - Cyril Zipfel
- Department of Plant and Microbial Biology, Zurich-Basel Plant Science Center, University of Zürich, CH-8008 Zürich, Switzerland
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, NR4 7UH Norwich, U.K
| | - Eric Nguema-Ona
- Centre Mondial de l'Innovation-Groupe Roullier (CMI-Roullier), Laboratoire de Nutrition Végétale, Saint Malo, F-35400, France
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3
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Peng J, Wang X, Wang H, Li X, Zhang Q, Wang M, Yan J. Advances in understanding grapevine downy mildew: From pathogen infection to disease management. MOLECULAR PLANT PATHOLOGY 2024; 25:e13401. [PMID: 37991155 PMCID: PMC10788597 DOI: 10.1111/mpp.13401] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Accepted: 09/29/2023] [Indexed: 11/23/2023]
Abstract
Plasmopara viticola is geographically widespread in grapevine-growing regions. Grapevine downy mildew disease, caused by this biotrophic pathogen, leads to considerable yield losses in viticulture annually. Because of the great significance of grapevine production and wine quality, research on this disease has been widely performed since its emergence in the 19th century. Here, we review and discuss recent understanding of this pathogen from multiple aspects, including its infection cycle, disease symptoms, genome decoding, effector biology, and management and control strategies. We highlight the identification and characterization of effector proteins with their biological roles in host-pathogen interaction, with a focus on sustainable control methods against P. viticola, especially the use of biocontrol agents and environmentally friendly compounds.
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Affiliation(s)
- Junbo Peng
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Xuncheng Wang
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Hui Wang
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Xinghong Li
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Qi Zhang
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Meng Wang
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Jiye Yan
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
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4
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Maia M, Aziz A, Jeandet P, Carré V. Profiling and Localization of Stilbene Phytoalexins Revealed by MALDI-MSI during the Grapevine- Botrytis cinerea Interaction. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:15569-15581. [PMID: 37831964 DOI: 10.1021/acs.jafc.3c03620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2023]
Abstract
Stilbene phytoalexins are among the most accumulated compounds during grapevine-pathogen interactions. However, their steady-state accumulation level and spatial distribution within the tissues to counteract Botrytis cinerea infection remain to be explored. In this work, matrix-assisted laser desorption/ionization-mass spectrometry imaging (MALDI-MSI) was used to determine the spatial distribution of different phytoalexins in grapevine leaves upon infection with B. cinerea. Ultraperformance liquid chromatography-fluorescence (UPLC-FL) was also employed to monitor the accumulation pattern of these phytoalexins. This study showed that stilbene compounds accumulate in areas close to the pathogen infection sites. It was also revealed that the accumulation patterns of the stilbene phytoalexins can vary from one time point postinfection to another with specific accumulation patterns within each time point. To the best of our knowledge, this is the first time that the separate localization of grapevine stilbene phytoalexins has been revealed following B. cinerea infection.
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Affiliation(s)
- Marisa Maia
- LCP-A2MC, Université de Lorraine, F-57000 Metz, France
| | - Aziz Aziz
- Induced Resistance and Plant Bioprotection (RIBP), University of Reims Champagne-Ardenne, USC INRAE 1488, Reims 51100, France
| | - Philippe Jeandet
- Induced Resistance and Plant Bioprotection (RIBP), University of Reims Champagne-Ardenne, USC INRAE 1488, Reims 51100, France
| | - Vincent Carré
- LCP-A2MC, Université de Lorraine, F-57000 Metz, France
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Adejoro DO, Jones EE, Ridgway HJ, Mundy DC, Vanga BR, Bulman SR. Grapevines escaping trunk diseases in New Zealand vineyards have a distinct microbiome structure. Front Microbiol 2023; 14:1231832. [PMID: 37680529 PMCID: PMC10482235 DOI: 10.3389/fmicb.2023.1231832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 07/26/2023] [Indexed: 09/09/2023] Open
Abstract
Grapevine trunk diseases (GTDs) are a substantial challenge to viticulture, especially with a lack of available control measures. The lack of approved fungicides necessitates the exploration of alternative controls. One promising approach is the investigation of disease escape plants, which remain healthy under high disease pressure, likely due to their microbiome function. This study explored the microbiome of grapevines with the disease escape phenotype. DNA metabarcoding of the ribosomal internal transcribed spacer 1 (ITS1) and 16S ribosomal RNA gene was applied to trunk tissues of GTD escape and adjacent diseased vines. Our findings showed that the GTD escape vines had a significantly different microbiome compared with diseased vines. The GTD escape vines consistently harbored a higher relative abundance of the bacterial taxa Pseudomonas and Hymenobacter. Among fungi, Aureobasidium and Rhodotorula were differentially associated with GTD escape vines, while the GTD pathogen, Eutypa, was associated with the diseased vines. This is the first report of the link between the GTD escape phenotype and the grapevine microbiome.
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Affiliation(s)
- Damola O. Adejoro
- Department of Pest-Management and Conservation, Faculty of Agriculture and Life Sciences, Lincoln University, Lincoln, Canterbury, New Zealand
| | - E. Eirian Jones
- Department of Pest-Management and Conservation, Faculty of Agriculture and Life Sciences, Lincoln University, Lincoln, Canterbury, New Zealand
| | - Hayley J. Ridgway
- Department of Pest-Management and Conservation, Faculty of Agriculture and Life Sciences, Lincoln University, Lincoln, Canterbury, New Zealand
- The New Zealand Institute for Plant and Food Research Limited, Lincoln, Canterbury, New Zealand
| | - Dion C. Mundy
- The New Zealand Institute for Plant and Food Research Limited, Blenheim, Marlborough, New Zealand
| | - Bhanupratap R. Vanga
- The New Zealand Institute for Plant and Food Research Limited, Lincoln, Canterbury, New Zealand
- Grapevine Improvement Laboratory, Bragato Research Institute, Lincoln, Canterbury, New Zealand
| | - Simon R. Bulman
- The New Zealand Institute for Plant and Food Research Limited, Lincoln, Canterbury, New Zealand
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6
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Taibi O, Salotti I, Rossi V. Plant Resistance Inducers Affect Multiple Epidemiological Components of Plasmopara viticola on Grapevine Leaves. PLANTS (BASEL, SWITZERLAND) 2023; 12:2938. [PMID: 37631150 PMCID: PMC10459891 DOI: 10.3390/plants12162938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/02/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023]
Abstract
Plant resistance inducers (PRIs) harbor promising potential for use in downy mildew (DM) control in viticulture. Here, the effects of six commercial PRIs on some epidemiological components of Plasmopara viticola (Pv) on grapevine leaves were studied over 3 years. Disease severity, mycelial colonization of leaf tissue, sporulation severity, production of sporangia on affected leaves, and per unit of DM lesion were evaluated by inoculating the leaves of PRI-treated plants at 1, 3, 6, 12, and 19 days after treatment (DAT). Laminarin, potassium phosphonate (PHO), and fosetyl-aluminium (FOS) were the most effective in reducing disease severity as well as the Pv DNA concentration of DM lesions on leaves treated and inoculated at 1 and 3 DAT; PHO and FOS also showed long-lasting effects on leaves established after treatment (inoculations at 6 to 19 DAT). PRIs also prevented the sporulation of Pv on lesions; all the PRI-treated leaves produced fewer sporangia than the nontreated control, especially in PHO-, FOS-, and cerevisane-treated leaves (>75% reduction). These results illustrate the broader and longer effect of PRIs on DM epidemics. The findings open up new perspectives for using PRIs in a defense program based on single, timely, and preventative field interventions.
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Affiliation(s)
| | | | - Vittorio Rossi
- Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Via Emilia Parmense, 84, 29122 Piacenza, Italy; (O.T.); (I.S.)
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Kashyap AS, Manzar N, Meshram S, Sharma PK. Screening microbial inoculants and their interventions for cross-kingdom management of wilt disease of solanaceous crops- a step toward sustainable agriculture. Front Microbiol 2023; 14:1174532. [PMID: 37389335 PMCID: PMC10303155 DOI: 10.3389/fmicb.2023.1174532] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 04/18/2023] [Indexed: 07/01/2023] Open
Abstract
Microbial inoculants may be called magical bullets because they are small in size but have a huge impact on plant life and humans. The screening of these beneficial microbes will give us an evergreen technology to manage harmful diseases of cross-kingdom crops. The production of these crops is reducing as a result of multiple biotic factors and among them the bacterial wilt disease triggered by Ralstonia solanacearum is the most important in solanaceous crops. The examination of the diversity of bioinoculants has shown that more microbial species have biocontrol activity against soil-borne pathogens. Reduced crop output, lower yields, and greater cost of cultivation are among the major issues caused by diseases in agriculture around the world. It is universally true that soil-borne disease epidemics pose a greater threat to crops. These necessitate the use of eco-friendly microbial bioinoculants. This review article provides an overview of plant growth-promoting microorganisms bioinoculants, their various characteristics, biochemical and molecular screening insights, and modes of action and interaction. The discussion is concluded with a brief overview of potential future possibilities for the sustainable development of agriculture. This review will be useful for students and researchers to obtain existing knowledge of microbial inoculants, their activities, and their mechanisms, which will facilitate the development of environmentally friendly management strategies for cross-kingdom plant diseases.
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Affiliation(s)
- Abhijeet Shankar Kashyap
- Molecular Biology Lab, ICAR-National Bureau of Agriculturally Important Microorganisms, Maunath Bhanjan, India
| | - Nazia Manzar
- Plant Pathology Lab, ICAR-National Bureau of Agriculturally Important Microorganisms, Maunath Bhanjan, India
| | - Shweta Meshram
- Department of Plant Pathology, Lovely Professional University, Phagwara, Punjab, India
| | - Pawan Kumar Sharma
- Plant Pathology Lab, ICAR-National Bureau of Agriculturally Important Microorganisms, Maunath Bhanjan, India
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Yacoub A, Haidar R, Mesguida O, Gerbore J, Hachicha M, Attard E, Guyoneaud R, Rey P. Deciphering Plant-Induced Responses toward Botrytis cinerea and Plasmopara viticola Attacks in Two Grapevine Cultivars Colonized by the Root Biocontrol Oomycete, Pythium oligandrum. J Fungi (Basel) 2023; 9:jof9050511. [PMID: 37233222 DOI: 10.3390/jof9050511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 04/11/2023] [Accepted: 04/20/2023] [Indexed: 05/27/2023] Open
Abstract
Two major diseases that affect grapevine leaves and berries are controlled by the oomycete Pythium oligandrum. As the efficacy of biocontrol agents strongly depends on factors such as the trophic behaviors of pathogens and cultivar susceptibility, a two-disease approach was implemented to evaluate the activity of P. oligandrum against Botrytis cinerea (the necrotrophic fungus of gray mold) and Plasmopara viticola (the biotrophic oomycete of downy mildew) on two grapevine cultivars with different susceptibilities to these two pathogens. The results show that grapevine root inoculation with P. oligandrum significantly reduced P. viticola and B. cinerea infection on the leaves of the two cultivars, but with differences. This was observed when the relative expression of 10 genes was measured in response to each pathogen, and could be attributed to their lifestyles, i.e., biotrophic or necrotrophic, which are related to the activation of specific metabolic pathways of the plant. In response to P. viticola infection, genes from the jasmonate and ethylene pathways were mainly induced, whereas for B. cinerea, the genes induced were those of the ethylene-jasmonate pathway. The different levels of defense against B. cinerea and P. viticola could also explain the difference in cultivar susceptibility to these pathogens.
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Affiliation(s)
- Amira Yacoub
- E2S UPPA, CNRS, IPREM, Université de Pau et des Pays de l'Adour, 64000 Pau, France
- INRAE, UMR1065, Santé et Agroécologie du Vignoble (SAVE), ISVV, 33883 Villenave d'Ornon, France
| | - Rana Haidar
- E2S UPPA, CNRS, IPREM, Université de Pau et des Pays de l'Adour, 64000 Pau, France
- INRAE, UMR1065, Santé et Agroécologie du Vignoble (SAVE), ISVV, 33883 Villenave d'Ornon, France
| | - Ouiza Mesguida
- E2S UPPA, CNRS, IPREM, Université de Pau et des Pays de l'Adour, 64000 Pau, France
- GreenCell, Biopôle Clermont-Limagne, 63360 Saint Beauzire, France
| | - Jonathan Gerbore
- GreenCell, Biopôle Clermont-Limagne, 63360 Saint Beauzire, France
| | - Maya Hachicha
- INRAE, UMR1065, Santé et Agroécologie du Vignoble (SAVE), ISVV, 33883 Villenave d'Ornon, France
| | - Eléonore Attard
- E2S UPPA, CNRS, IPREM, Université de Pau et des Pays de l'Adour, 64000 Pau, France
| | - Rémy Guyoneaud
- E2S UPPA, CNRS, IPREM, Université de Pau et des Pays de l'Adour, 64000 Pau, France
| | - Patrice Rey
- E2S UPPA, CNRS, IPREM, Université de Pau et des Pays de l'Adour, 64000 Pau, France
- INRAE, UMR1065, Santé et Agroécologie du Vignoble (SAVE), ISVV, 33883 Villenave d'Ornon, France
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Khoshru B, Mitra D, Joshi K, Adhikari P, Rion MSI, Fadiji AE, Alizadeh M, Priyadarshini A, Senapati A, Sarikhani MR, Panneerselvam P, Mohapatra PKD, Sushkova S, Minkina T, Keswani C. Decrypting the multi-functional biological activators and inducers of defense responses against biotic stresses in plants. Heliyon 2023; 9:e13825. [PMID: 36873502 PMCID: PMC9981932 DOI: 10.1016/j.heliyon.2023.e13825] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 01/31/2023] [Accepted: 02/14/2023] [Indexed: 02/19/2023] Open
Abstract
Plant diseases are still the main problem for the reduction in crop yield and a threat to global food security. Additionally, excessive usage of chemical inputs such as pesticides and fungicides to control plant diseases have created another serious problem for human and environmental health. In view of this, the application of plant growth-promoting rhizobacteria (PGPR) for controlling plant disease incidences has been identified as an eco-friendly approach for coping with the food security issue. In this review, we have identified different ways by which PGPRs are capable of reducing phytopathogenic infestations and enhancing crop yield. PGPR suppresses plant diseases, both directly and indirectly, mediated by microbial metabolites and signaling components. Microbial synthesized anti-pathogenic metabolites such as siderophores, antibiotics, lytic enzymes, hydrogen cyanide, and several others act directly on phytopathogens. The indirect mechanisms of reducing plant disease infestation are caused by the stimulation of plant immune responses known as initiation of systemic resistance (ISR) which is mediated by triggering plant immune responses elicited through pathogen-associated molecular patterns (PAMPs). The ISR triggered in the infected region of the plant leads to the development of systemic acquired resistance (SAR) throughout the plant making the plant resistant to a wide range of pathogens. A number of PGPRs including Pseudomonas and Bacillus genera have proven their ability to stimulate ISR. However, there are still some challenges in the large-scale application and acceptance of PGPR for pest and disease management. Further, we discuss the newly formulated PGPR inoculants possessing both plant growth-promoting activities and plant disease suppression ability for a holistic approach to sustaining plant health and enhancing crop productivity.
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Affiliation(s)
- Bahman Khoshru
- Department of Soil Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Debasis Mitra
- Department of Microbiology, Raiganj University, Raiganj - 733 134, West Bengal, India
| | - Kuldeep Joshi
- G.B. Pant National Institute of Himalayan Environment, Kosi-Katarmal, Almora-263643, Uttarakhand, India
| | - Priyanka Adhikari
- Centre for Excellence on GMP Extraction Facility (DBT, Govt. of India), National Institute of Pharmaceutical Education and Research. Guwahati-781101, Assam, India
| | | | - Ayomide Emmanuel Fadiji
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho 2735, South Africa
| | - Mehrdad Alizadeh
- Department of Plant Pathology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - Ankita Priyadarshini
- Crop Production Division, ICAR – National Rice Research Institute, Cuttack, 753006, Odisha, India
| | - Ansuman Senapati
- Crop Production Division, ICAR – National Rice Research Institute, Cuttack, 753006, Odisha, India
| | | | - Periyasamy Panneerselvam
- Crop Production Division, ICAR – National Rice Research Institute, Cuttack, 753006, Odisha, India
| | | | - Svetlana Sushkova
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don 344090, Russia
| | - Tatiana Minkina
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don 344090, Russia
| | - Chetan Keswani
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don 344090, Russia
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10
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Thepbandit W, Srisuwan A, Siriwong S, Nawong S, Athinuwat D. Bacillus vallismortis TU-Orga21 blocks rice blast through both direct effect and stimulation of plant defense. FRONTIERS IN PLANT SCIENCE 2023; 14:1103487. [PMID: 36890906 PMCID: PMC9986491 DOI: 10.3389/fpls.2023.1103487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Beneficial microorganisms are an important strategy for sustainable plant production processes such as stimulate root exudation, stress tolerance, and yield improvement. This study investigated various microorganisms isolated from the rhizosphere of Oryza sativa L. in order to inhibit Magnaporthe oryzae cause of rice blast, by direct and indirect mode of action. The results indicated that Bacillus vallismortis strain TU-Orga21 significantly reduced M. oryzae mycelium growth and deformed the hyphal structures. The effects of biosurfactant TU-Orga21 was studied against M. oryzae spore development. The dose of ≥5% v/v biosurfactant significantly inhibited the germ tubes and appressoria formation. The biosurfactants were evaluated as surfactin and iturin A by Matrix-assisted laser desorption ionization dual time-of-flight tandem mass spectrometry. Under greenhouse conditions, priming the biosurfactant three times before M. oryzae infection significantly accumulated endogenous salicylic acid, phenolic compounds, and hydrogen peroxide (H2O2) during the infection process of M. oryzae. The SR-FT-IR spectral changes from the mesophyll revealed higher integral area groups of lipids, pectins, and proteins amide I and amide II in the elicitation sample. Furthermore, scanning electron microscope revealed appressorium and hyphal enlargement in un-elicitation leaves whereas appressorium formation and hyphal invasion were not found in biosurfactant-elicitation at 24 h post inoculation. The biosurfactant treatment significantly mitigated rice blast disease severity. Therefore, B. vallismortis can be a promising novel biocontrol agent which contains the preformed active metabolites for a rapid control of rice blast by a direct action against pathogen and by boosting plant immunity.
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Affiliation(s)
| | - Anake Srisuwan
- Faculty of Science and Technology, Nakhon Ratchasima Rajabhat University, Nakhon Ratchasima, Thailand
| | | | - Siriwan Nawong
- Synchrotron Light Research Institute, Nakhon Ratchasima, Thailand
| | - Dusit Athinuwat
- Faculty of Science and Technology, Thammasat University, Pathumtani, Thailand
- Center of Excellence in Agriculture Innovation Centre through Supply Chain and Value Chain, Thammasat University, Pathumtani, Thailand
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11
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Bonaterra A, Badosa E, Daranas N, Francés J, Roselló G, Montesinos E. Bacteria as Biological Control Agents of Plant Diseases. Microorganisms 2022; 10:microorganisms10091759. [PMID: 36144361 PMCID: PMC9502092 DOI: 10.3390/microorganisms10091759] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 08/18/2022] [Accepted: 08/24/2022] [Indexed: 12/04/2022] Open
Abstract
Biological control is an effective and sustainable alternative or complement to conventional pesticides for fungal and bacterial plant disease management. Some of the most intensively studied biological control agents are bacteria that can use multiple mechanisms implicated in the limitation of plant disease development, and several bacterial-based products have been already registered and marketed as biopesticides. However, efforts are still required to increase the commercially available microbial biopesticides. The inconsistency in the performance of bacterial biocontrol agents in the biological control has limited their extensive use in commercial agriculture. Pathosystem factors and environmental conditions have been shown to be key factors involved in the final levels of disease control achieved by bacteria. Several biotic and abiotic factors can influence the performance of the biocontrol agents, affecting their mechanisms of action or the multitrophic interaction between the plant, the pathogen, and the bacteria. This review shows some relevant examples of known bacterial biocontrol agents, with especial emphasis on research carried out by Spanish groups. In addition, the importance of the screening process and of the key steps in the development of bacterial biocontrol agents is highlighted. Besides, some improvement approaches and future trends are considered.
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Nguyen NH, Trotel-Aziz P, Villaume S, Rabenoelina F, Clément C, Baillieul F, Aziz A. Priming of camalexin accumulation in induced systemic resistance by beneficial bacteria against Botrytis cinerea and Pseudomonas syringae pv. tomato DC3000. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:3743-3757. [PMID: 35191984 DOI: 10.1093/jxb/erac070] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 02/18/2022] [Indexed: 06/14/2023]
Abstract
Plants harbor various beneficial microbes that modulate their innate immunity, resulting in induced systemic resistance (ISR) against a broad range of pathogens. Camalexin is an integral part of Arabidopsis innate immunity, but the contribution of its biosynthesis in ISR is poorly investigated. We focused on camalexin accumulation primed by two beneficial bacteria, Pseudomonas fluorescens and Bacillus subtilis, and its role in ISR against Botrytis cinerea and Pseudomonas syringae Pst DC3000. Our data show that colonization of Arabidopsis thaliana roots by beneficial bacteria triggers ISR against both pathogens and primes plants for enhanced accumulation of camalexin and CYP71A12 transcript in leaf tissues. Pseudomonas fluorescens induced the most efficient ISR response against B. cinerea, while B. subtilis was more efficient against Pst DC3000. Analysis of cyp71a12 and pad3 mutants revealed that loss of camalexin synthesis affected ISR mediated by both bacteria against B. cinerea. CYP71A12 and PAD3 contributed significantly to the pathogen-triggered accumulation of camalexin, but PAD3 does not seem to contribute to ISR against Pst DC3000. This indicated a significant contribution of camalexin in ISR against B. cinerea, but not always against Pst DC3000. Experiments with Arabidopsis mutants compromised in different hormonal signaling pathways highlighted that B. subtilis stimulates similar signaling pathways upon infection with both pathogens, since salicylic acid (SA), but not jasmonic acid (JA) or ethylene, is required for ISR camalexin accumulation. However, P. fluorescens-induced ISR differs depending on the pathogen; both SA and JA are required for camalexin accumulation upon B. cinerea infection, while camalexin is not necessary for priming against Pst DC3000.
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Affiliation(s)
- Ngoc Huu Nguyen
- Induced Resistance and Plant Bioprotection USC INRAE 1488, SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Reims Cedex 02, France
- Department of Plant Biology, Faculty of Agriculture and Forestry, Tay Nguyen University, 567 Le Duan, Daklak, Vietnam
| | - Patricia Trotel-Aziz
- Induced Resistance and Plant Bioprotection USC INRAE 1488, SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Reims Cedex 02, France
| | - Sandra Villaume
- Induced Resistance and Plant Bioprotection USC INRAE 1488, SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Reims Cedex 02, France
| | - Fanja Rabenoelina
- Induced Resistance and Plant Bioprotection USC INRAE 1488, SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Reims Cedex 02, France
| | - Christophe Clément
- Induced Resistance and Plant Bioprotection USC INRAE 1488, SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Reims Cedex 02, France
| | - Fabienne Baillieul
- Induced Resistance and Plant Bioprotection USC INRAE 1488, SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Reims Cedex 02, France
| | - Aziz Aziz
- Induced Resistance and Plant Bioprotection USC INRAE 1488, SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Reims Cedex 02, France
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Koledenkova K, Esmaeel Q, Jacquard C, Nowak J, Clément C, Ait Barka E. Plasmopara viticola the Causal Agent of Downy Mildew of Grapevine: From Its Taxonomy to Disease Management. Front Microbiol 2022; 13:889472. [PMID: 35633680 PMCID: PMC9130769 DOI: 10.3389/fmicb.2022.889472] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/19/2022] [Indexed: 01/25/2023] Open
Abstract
Plasmopara viticola (P. viticola, Berk. & M. A. Curtis; Berl. & De Toni) causing grapevine downy mildew is one of the most damaging pathogens to viticulture worldwide. Since its recognition in the middle of nineteenth century, this disease has spread from America to Europe and then to all grapevine-growing countries, leading to significant economic losses due to the lack of efficient disease control. In 1885 copper was found to suppress many pathogens, and is still the most effective way to control downy mildews. During the twentieth century, contact and penetrating single-site fungicides have been developed for use against plant pathogens including downy mildews, but wide application has led to the appearance of pathogenic strains resistant to these treatments. Additionally, due to the negative environmental impact of chemical pesticides, the European Union restricted their use, triggering a rush to develop alternative tools such as resistant cultivars breeding, creation of new active ingredients, search for natural products and biocontrol agents that can be applied alone or in combination to kill the pathogen or mitigate its effect. This review summarizes data about the history, distribution, epidemiology, taxonomy, morphology, reproduction and infection mechanisms, symptoms, host-pathogen interactions, host resistance and control of the P. viticola, with a focus on sustainable methods, especially the use of biocontrol agents.
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Affiliation(s)
- Kseniia Koledenkova
- Université de Reims Champagne Ardenne, RIBP EA4707 USC INRAE 1488, SFR Condorcet FR CNRS 3417, Reims, France
| | - Qassim Esmaeel
- Université de Reims Champagne Ardenne, RIBP EA4707 USC INRAE 1488, SFR Condorcet FR CNRS 3417, Reims, France
| | - Cédric Jacquard
- Université de Reims Champagne Ardenne, RIBP EA4707 USC INRAE 1488, SFR Condorcet FR CNRS 3417, Reims, France
| | - Jerzy Nowak
- School of Plant and Environmental Sciences, Virginia Polytechnic Institute and State University, Saunders Hall, Blacksburg, VA, United States
| | - Christophe Clément
- Université de Reims Champagne Ardenne, RIBP EA4707 USC INRAE 1488, SFR Condorcet FR CNRS 3417, Reims, France
| | - Essaid Ait Barka
- Université de Reims Champagne Ardenne, RIBP EA4707 USC INRAE 1488, SFR Condorcet FR CNRS 3417, Reims, France
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14
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Nguyen NH, Trotel-Aziz P, Clément C, Jeandet P, Baillieul F, Aziz A. Camalexin accumulation as a component of plant immunity during interactions with pathogens and beneficial microbes. PLANTA 2022; 255:116. [PMID: 35511374 DOI: 10.1007/s00425-022-03907-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 04/26/2022] [Indexed: 06/14/2023]
Abstract
This review provides an overview on the role of camalexin in plant immunity taking into account various plant-pathogen and beneficial microbe interactions, regulation mechanisms and the contribution in basal and induced plant resistance. In a hostile environment, plants evolve complex and sophisticated defense mechanisms to counteract invading pathogens and herbivores. Several lines of evidence support the assumption that secondary metabolites like phytoalexins which are synthesized de novo, play an important role in plant defenses and contribute to pathogens' resistance in a wide variety of plant species. Phytoalexins are synthesized and accumulated in plants upon pathogen challenge, root colonization by beneficial microbes, following treatment with chemical elicitors or in response to abiotic stresses. Their protective properties against pathogens have been reported in various plant species as well as their contribution to human health. Phytoalexins are synthesized through activation of particular sets of genes encoding specific pathways. Camalexin (3'-thiazol-2'-yl-indole) is the primary phytoalexin produced by Arabidopsis thaliana after microbial infection or abiotic elicitation and an iconic representative of the indole phytoalexin family. The synthesis of camalexin is an integral part of cruciferous plant defense mechanisms. Although the pathway leading to camalexin has been largely elucidated, the regulatory networks that control the induction of its biosynthetic steps by pathogens with different lifestyles or by beneficial microbes remain mostly unknown. This review thus presents current knowledge regarding camalexin biosynthesis induction during plant-pathogen and beneficial microbe interactions as well as in response to microbial compounds and provides an overview on its regulation and interplay with signaling pathways. The contribution of camalexin to basal and induced plant resistance and its detoxification by some pathogens to overcome host resistance are also discussed.
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Affiliation(s)
- Ngoc Huu Nguyen
- Induced Resistance and Plant Bioprotection, USC INRAE 1488, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Cedex 02, Reims, France
- Department of Plant Biology, Faculty of Agriculture and Forestry, Tay Nguyen University, 567 Le Duan, Buon Ma Thuot, Daklak, Vietnam
| | - Patricia Trotel-Aziz
- Induced Resistance and Plant Bioprotection, USC INRAE 1488, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Cedex 02, Reims, France
| | - Christophe Clément
- Induced Resistance and Plant Bioprotection, USC INRAE 1488, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Cedex 02, Reims, France
| | - Philippe Jeandet
- Induced Resistance and Plant Bioprotection, USC INRAE 1488, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Cedex 02, Reims, France
| | - Fabienne Baillieul
- Induced Resistance and Plant Bioprotection, USC INRAE 1488, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Cedex 02, Reims, France
| | - Aziz Aziz
- Induced Resistance and Plant Bioprotection, USC INRAE 1488, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Cedex 02, Reims, France.
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15
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Commensal Pseudomonas strains facilitate protective response against pathogens in the host plant. Nat Ecol Evol 2022; 6:383-396. [PMID: 35210578 PMCID: PMC8986537 DOI: 10.1038/s41559-022-01673-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 12/07/2021] [Indexed: 12/31/2022]
Abstract
The community structure in the plant-associated microbiome depends collectively on host–microbe, microbe–microbe and host–microbe–microbe interactions. The ensemble of interactions between the host and microbial consortia may lead to outcomes that are not easily predicted from pairwise interactions. Plant–microbe–microbe interactions are important to plant health but could depend on both host and microbe strain variation. Here we study interactions between groups of naturally co-existing commensal and pathogenic Pseudomonas strains in the Arabidopsis thaliana phyllosphere. We find that commensal Pseudomonas prompt a host response that leads to selective inhibition of a specific pathogenic lineage, resulting in plant protection. The extent of protection depends on plant genotype, supporting that these effects are host-mediated. Strain-specific effects are also demonstrated by one individual Pseudomonas isolate eluding the plant protection provided by commensals. Our work highlights how within-species genetic differences in both hosts and microbes can affect host–microbe–microbe dynamics. The authors conduct competition experiments with multiple strains of Pseudomonas (some pathogenic and some commensal) in the phylosphere microbiome of Arabidopsis plants, showing that both the host and the commensal strains interact to inhibit the pathogenic strains.
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Darriaut R, Lailheugue V, Masneuf-Pomarède I, Marguerit E, Martins G, Compant S, Ballestra P, Upton S, Ollat N, Lauvergeat V. Grapevine rootstock and soil microbiome interactions: Keys for a resilient viticulture. HORTICULTURE RESEARCH 2022; 9:uhac019. [PMID: 35184168 PMCID: PMC8985100 DOI: 10.1093/hr/uhac019] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/18/2021] [Accepted: 01/17/2022] [Indexed: 05/10/2023]
Abstract
Soil microbiota has increasingly been shown to play an integral role in viticulture resilience. The emergence of new metagenomic and culturomic technologies has led to significant advances in the study of microbial biodiversity. In the agricultural sector, soil and plant microbiomes have been found to significantly improve resistance to environmental stressors and diseases, as well as influencing crop yields and fruit quality thus improving sustainability under shifting environments. Grapevines are usually cultivated as a scion grafted on rootstocks, which are selected according to pedoclimatic conditions and cultural practices, known as terroir. The rootstock connects the surrounding soil to the vine's aerial part and impacts scion growth and berry quality. Understanding rootstock and soil microbiome dynamics is a relevant and important field of study, which may be critical to improve viticulture sustainability and resilience. This review aims to highlight the relationship between grapevine roots and telluric microbiota diversity and activity. In addition, this review explores the concept of core microbiome regarding potential applications of soil microbiome engineering with the goal of enhancing grapevine adaptation to biotic and abiotic stress.
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Affiliation(s)
- Romain Darriaut
- EGFV, Univ. Bordeaux, Bordeaux Sciences Agro, INRAE, ISVV, F-33882, Villenave d'Ornon, France
| | - Vincent Lailheugue
- EGFV, Univ. Bordeaux, Bordeaux Sciences Agro, INRAE, ISVV, F-33882, Villenave d'Ornon, France
| | - Isabelle Masneuf-Pomarède
- Université de Bordeaux,
UMR Oenologie 1366, INRAE, Bordeaux INP, Bordeaux Sciences Agro, ISVV, Villenave d'Ornon, France
- Bordeaux Sciences Agro, 33170 Gradignan, France
| | - Elisa Marguerit
- EGFV, Univ. Bordeaux, Bordeaux Sciences Agro, INRAE, ISVV, F-33882, Villenave d'Ornon, France
| | - Guilherme Martins
- Université de Bordeaux,
UMR Oenologie 1366, INRAE, Bordeaux INP, Bordeaux Sciences Agro, ISVV, Villenave d'Ornon, France
- Bordeaux Sciences Agro, 33170 Gradignan, France
| | - Stéphane Compant
- AIT Austrian Institute of Technology, Center for Health and Bioresources, Bioresources Unit, Konrad Lorenz Straße 24, Tulln, A-3430, Austria
| | - Patricia Ballestra
- Université de Bordeaux,
UMR Oenologie 1366, INRAE, Bordeaux INP, Bordeaux Sciences Agro, ISVV, Villenave d'Ornon, France
| | | | - Nathalie Ollat
- EGFV, Univ. Bordeaux, Bordeaux Sciences Agro, INRAE, ISVV, F-33882, Villenave d'Ornon, France
| | - Virginie Lauvergeat
- EGFV, Univ. Bordeaux, Bordeaux Sciences Agro, INRAE, ISVV, F-33882, Villenave d'Ornon, France
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Multiple pre-harvest applications of antagonist Pseudomonas fluorescens ZX induce resistance against blue and green molds in postharvest citrus fruit. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112922] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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18
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Yu Y, Gui Y, Li Z, Jiang C, Guo J, Niu D. Induced Systemic Resistance for Improving Plant Immunity by Beneficial Microbes. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11030386. [PMID: 35161366 PMCID: PMC8839143 DOI: 10.3390/plants11030386] [Citation(s) in RCA: 96] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/26/2022] [Accepted: 01/27/2022] [Indexed: 05/05/2023]
Abstract
Plant beneficial microorganisms improve the health and growth of the associated plants. Application of beneficial microbes triggers an enhanced resistance state, also termed as induced systemic resistance (ISR), in the host, against a broad range of pathogens. Upon the activation of ISR, plants employ long-distance systemic signaling to provide protection for distal tissue, inducing rapid and strong immune responses against pathogens invasions. The transmission of ISR signaling was commonly regarded to be a jasmonic acid- and ethylene-dependent, but salicylic acid-independent, transmission. However, in the last decade, the involvement of both salicylic acid and jasmonic acid/ethylene signaling pathways and the regulatory roles of small RNA in ISR has been updated. In this review, the plant early recognition, responsive reactions, and the related signaling transduction during the process of the plant-beneficial microbe interaction was discussed, with reflection on the crucial regulatory role of small RNAs in the beneficial microbe-mediated ISR.
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Affiliation(s)
- Yiyang Yu
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (Y.G.); (Z.L.); (C.J.); (J.G.)
- State Key Laboratory of Biological Interactions and Crop Health, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Ying Gui
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (Y.G.); (Z.L.); (C.J.); (J.G.)
- State Key Laboratory of Biological Interactions and Crop Health, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Zijie Li
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (Y.G.); (Z.L.); (C.J.); (J.G.)
- State Key Laboratory of Biological Interactions and Crop Health, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Chunhao Jiang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (Y.G.); (Z.L.); (C.J.); (J.G.)
- State Key Laboratory of Biological Interactions and Crop Health, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Jianhua Guo
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (Y.G.); (Z.L.); (C.J.); (J.G.)
- State Key Laboratory of Biological Interactions and Crop Health, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Dongdong Niu
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (Y.G.); (Z.L.); (C.J.); (J.G.)
- State Key Laboratory of Biological Interactions and Crop Health, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
- Correspondence:
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D-Tagatose-Based Product Triggers Sweet Immunity and Resistance of Grapevine to Downy Mildew, but Not to Gray Mold Disease. PLANTS 2022; 11:plants11030296. [PMID: 35161277 PMCID: PMC8839929 DOI: 10.3390/plants11030296] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/19/2022] [Accepted: 01/21/2022] [Indexed: 12/02/2022]
Abstract
The use of natural bio-based compounds becomes an eco-friendly strategy to control plant diseases. Rare sugars would be promising compounds as inducers of plant “sweet immunity”. The present study aimed to investigate the induced resistance of grapevine leaves against Plasmopara viticola and Botrytis cinerea by a rare sugar-based product (IFP48) and its active ingredient D-tagatose (TAG), in order to elucidate molecular mechanism involved in defense-related metabolic regulations before and after pathogen challenge. Data showed that spraying leaves with IFP48 and TAG lead to a significant reduction of downy mildew, but not of gray mold disease. The induced protection against P. viticola relies on IFP48’s and to a lesser extent TAG’s ability to potentiate the activation of salicylic acid- and jasmonic acid/ethylene-responsive genes and stilbene phytoalexin accumulation. Most of defense responses remained upregulated in IFP48-treated plants after infection with P. viticola, but inconsistent following challenge with B. cinerea. The beneficial effects of IFP48 were associated with an enhanced accumulation of tagatose inside leaf tissues compared to TAG treatment. Meanwhile, the amounts of sugars, glucose, fructose, maltose, galactose and trehalose remained unchanged or decreased in IFP48-treated leaves after P. viticola infection, although only a few genes involved in sugar transport and metabolism showed transcriptional regulation. This suggests a contribution of sugar homeostasis to the IFP48-induced sweet immune response and priming plants for enhanced resistance to P. viticola, but not to B. cinerea.
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Sullam KE, Musa T. Ecological Dynamics and Microbial Treatments against Oomycete Plant Pathogens. PLANTS 2021; 10:plants10122697. [PMID: 34961168 PMCID: PMC8707103 DOI: 10.3390/plants10122697] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/16/2021] [Accepted: 11/23/2021] [Indexed: 11/16/2022]
Abstract
In this review, we explore how ecological concepts may help assist with applying microbial biocontrol agents to oomycete pathogens. Oomycetes cause a variety of agricultural diseases, including potato late blight, apple replant diseases, and downy mildew of grapevine, which also can lead to significant economic damage in their respective crops. The use of microbial biocontrol agents is increasingly gaining interest due to pressure from governments and society to reduce chemical plant protection products. The success of a biocontrol agent is dependent on many ecological processes, including the establishment on the host, persistence in the environment, and expression of traits that may be dependent on the microbiome. This review examines recent literature and trends in research that incorporate ecological aspects, especially microbiome, host, and environmental interactions, into biological control development and applications. We explore ecological factors that may influence microbial biocontrol agents’ efficacy and discuss key research avenues forward.
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Leal C, Richet N, Guise JF, Gramaje D, Armengol J, Fontaine F, Trotel-Aziz P. Cultivar Contributes to the Beneficial Effects of Bacillus subtilis PTA-271 and Trichoderma atroviride SC1 to Protect Grapevine Against Neofusicoccum parvum. Front Microbiol 2021; 12:726132. [PMID: 34721323 PMCID: PMC8552030 DOI: 10.3389/fmicb.2021.726132] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 09/08/2021] [Indexed: 11/17/2022] Open
Abstract
Grapevine trunk diseases (GTDs) are a big threat for global viticulture. Without effective chemicals, biocontrol strategies are developed as alternatives to better cope with environmental concerns. A combination of biological control agents (BCAs) could even improve sustainable disease management through complementary ways of protection. In this study, we evaluated the combination of Bacillus subtilis (Bs) PTA-271 and Trichoderma atroviride (Ta) SC1 for the protection of Chardonnay and Tempranillo rootlings against Neofusicoccum parvum Bt67, an aggressive pathogen associated to Botryosphaeria dieback (BD). Indirect benefits offered by each BCA and their combination were then characterized in planta, as well as their direct benefits in vitro. Results provide evidence that (1) the cultivar contributes to the beneficial effects of Bs PTA-271 and Ta SC1 against N. parvum, and that (2) the in vitro BCA mutual antagonism switches to the strongest fungistatic effect toward Np-Bt67 in a three-way confrontation test. We also report for the first time the beneficial potential of a combination of BCA against Np-Bt67 especially in Tempranillo. Our findings highlight a common feature for both cultivars: salicylic acid (SA)-dependent defenses were strongly decreased in plants protected by the BCA, in contrast with symptomatic ones. We thus suggest that (1) the high basal expression of SA-dependent defenses in Tempranillo explains its highest susceptibility to N. parvum, and that (2) the cultivar-specific responses to the beneficial Bs PTA-271 and Ta SC1 remain to be further investigated.
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Affiliation(s)
- Catarina Leal
- University of Reims Champagne-Ardenne, Résistance Induite et Bioprotection des Plantes Research Unit, EA 4707, INRAE USC 1488, SFR Condorcet FR CNRS 3417, Reims, France
| | - Nicolas Richet
- University of Reims Champagne-Ardenne, Résistance Induite et Bioprotection des Plantes Research Unit, EA 4707, INRAE USC 1488, SFR Condorcet FR CNRS 3417, Reims, France
| | - Jean-François Guise
- University of Reims Champagne-Ardenne, Résistance Induite et Bioprotection des Plantes Research Unit, EA 4707, INRAE USC 1488, SFR Condorcet FR CNRS 3417, Reims, France
| | - David Gramaje
- Instituto de Ciencias de la Vid y del Vino, Consejo Superior de Investigaciones Científicas, Universidad de la Rioja, Gobierno de La Rioja, Logroño, Spain
| | - Josep Armengol
- Instituto Agroforestal Mediterráneo, Universitat Politècnica de València, Valencia, Spain
| | - Florence Fontaine
- University of Reims Champagne-Ardenne, Résistance Induite et Bioprotection des Plantes Research Unit, EA 4707, INRAE USC 1488, SFR Condorcet FR CNRS 3417, Reims, France
| | - Patricia Trotel-Aziz
- University of Reims Champagne-Ardenne, Résistance Induite et Bioprotection des Plantes Research Unit, EA 4707, INRAE USC 1488, SFR Condorcet FR CNRS 3417, Reims, France
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22
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Zhang Q, Li K, Yang Y, Li B, Jiang L, He X, Jin Y, Zhao G. Transcriptional differentiation driving Cucumis sativus-Botrytis cinerea interactions based on the Skellam model and Bayesian networks. AMB Express 2021; 11:138. [PMID: 34669064 PMCID: PMC8528924 DOI: 10.1186/s13568-021-01296-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 10/11/2021] [Indexed: 12/03/2022] Open
Abstract
Robust statistical tools such as the Skellam model and Bayesian networks can capture the count properties of transcriptome sequencing data and clusters of genes among treatments, thereby improving our knowledge of gene functions and networks. In this study, we successfully implemented a model to analyze a transcriptome dataset of Cucumis sativus and Botrytis cinerea before and after their interaction. First, 4200 differentially expressed genes (DEGs) from C. sativus were clustered into 17 distinct groups, and 670 DEGs from B. cinerea were clustered into 12 groups. Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses were applied on these DEGs to assess the interactions between C. sativus and B. cinerea. In C. sativus, more DEGs were divided into terms in the molecular function and biological process domains than into cellular components, and 277 DEGs were allocated to 19 KEGG pathways. In B. cinerea, more DEGs were divided into terms in the biological process and cellular component domains than into molecular functions, and 150 DEGs were allocated to 26 KEGG pathways. In this study, we constructed networks of genes that interact with each other to screen hub genes based on a directed graphical model known as Bayesian networks. Through a detailed GO analysis, we excavated hub genes which were biologically meaningful. These results verify that availability of Skellam model and Bayesian networks in clustering gene expression data and sorting out hub genes. These models are instrumental in increasing our knowledge of gene functions and networks in plant–pathogen interaction.
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Solairaj D, Yang Q, Guillaume Legrand NN, Routledge MN, Zhang H. Molecular explication of grape berry-fungal infections and their potential application in recent postharvest infection control strategies. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.08.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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24
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Li H, James A, Shen X, Wang Y. Roles of microbiota in the formation of botrytized grapes and wines. CYTA - JOURNAL OF FOOD 2021. [DOI: 10.1080/19476337.2021.1958925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Hua Li
- Beijing Advanced Innovation Center For Food Nutrition And Human Health, Beijing Technology & Business University (BTBU), Beijing, P.R. China
| | - Armachius James
- Beijing Advanced Innovation Center For Food Nutrition And Human Health, Beijing Technology & Business University (BTBU), Beijing, P.R. China
| | - Xuemei Shen
- Beijing Advanced Innovation Center For Food Nutrition And Human Health, Beijing Technology & Business University (BTBU), Beijing, P.R. China
| | - Yousheng Wang
- Beijing Advanced Innovation Center For Food Nutrition And Human Health, Beijing Technology & Business University (BTBU), Beijing, P.R. China
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Lazazzara V, Vicelli B, Bueschl C, Parich A, Pertot I, Schuhmacher R, Perazzolli M. Trichoderma spp. volatile organic compounds protect grapevine plants by activating defense-related processes against downy mildew. PHYSIOLOGIA PLANTARUM 2021; 172:1950-1965. [PMID: 33783004 PMCID: PMC8360165 DOI: 10.1111/ppl.13406] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 02/22/2021] [Accepted: 03/19/2021] [Indexed: 05/04/2023]
Abstract
Volatile organic compounds (VOCs) are produced by soil-borne microorganisms and play crucial roles in fungal interactions with plants and phytopathogens. Although VOCs have been characterized in Trichoderma spp., the mechanisms against phytopathogens strongly differ according to the strain and pathosystem. This study aimed at characterizing VOCs produced by three Trichoderma strains used as biofungicides and to investigate their effects against grapevine downy mildew (caused by Plasmopara viticola). A VOC-mediated reduction of downy mildew severity was found in leaf disks treated with Trichoderma asperellum T34 (T34), T. harzianum T39 (T39), and T. atroviride SC1 (SC1) and 31 compounds were detected by head space-solid phase microextraction gas chromatography-mass spectrometry. Among the Trichoderma VOCs annotated, α-farnesene, cadinene, 1,3-octadiene, 2-pentylfuran, and 6-pentyl-2H-pyran-2-one reduced downy mildew severity on grapevine leaf disks. In particular, 6-pentyl-2H-pyran-2-one and 2-pentylfuran increased the accumulation of callose and enhanced the modulation of defense-related genes after P. viticola inoculation, indicating an induction of grapevine defense mechanisms. Moreover, 6-pentyl-2H-pyran-2-one activated the hypersensitive response after P. viticola inoculation, possibly to reinforce the grapevine defense reaction. These results indicate that Trichoderma VOCs can induce grapevine resistance, and these molecules could be further applied to control grapevine downy mildew.
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Affiliation(s)
- Valentina Lazazzara
- Department of Sustainable Agro‐ecosystems and BioresourcesResearch and Innovation Centre, Fondazione Edmund MachSan Michele all'AdigeItaly
| | - Bianca Vicelli
- Department of Sustainable Agro‐ecosystems and BioresourcesResearch and Innovation Centre, Fondazione Edmund MachSan Michele all'AdigeItaly
- Center Agriculture Food Environment (C3A)University of TrentoSan Michele all'AdigeItaly
| | - Christoph Bueschl
- Institute of Bioanalytics and Agro‐Metabolomics, Department of Agrobiotechnology (IFA‐Tulln)University of Natural Resources and Life Sciences, Vienna (BOKU)TullnAustria
| | - Alexandra Parich
- Institute of Bioanalytics and Agro‐Metabolomics, Department of Agrobiotechnology (IFA‐Tulln)University of Natural Resources and Life Sciences, Vienna (BOKU)TullnAustria
| | - Ilaria Pertot
- Department of Sustainable Agro‐ecosystems and BioresourcesResearch and Innovation Centre, Fondazione Edmund MachSan Michele all'AdigeItaly
- Center Agriculture Food Environment (C3A)University of TrentoSan Michele all'AdigeItaly
| | - Rainer Schuhmacher
- Institute of Bioanalytics and Agro‐Metabolomics, Department of Agrobiotechnology (IFA‐Tulln)University of Natural Resources and Life Sciences, Vienna (BOKU)TullnAustria
| | - Michele Perazzolli
- Department of Sustainable Agro‐ecosystems and BioresourcesResearch and Innovation Centre, Fondazione Edmund MachSan Michele all'AdigeItaly
- Center Agriculture Food Environment (C3A)University of TrentoSan Michele all'AdigeItaly
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Korshunova TY, Bakaeva MD, Kuzina EV, Rafikova GF, Chetverikov SP, Chetverikova DV, Loginov ON. Role of Bacteria of the Genus Pseudomonas in the Sustainable Development of Agricultural Systems and Environmental Protection (Review). APPL BIOCHEM MICRO+ 2021. [DOI: 10.1134/s000368382103008x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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27
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Vimont N, Schwarzenberg A, Domijan M, Donkpegan ASL, Beauvieux R, le Dantec L, Arkoun M, Jamois F, Yvin JC, Wigge PA, Dirlewanger E, Cortijo S, Wenden B. Fine tuning of hormonal signaling is linked to dormancy status in sweet cherry flower buds. TREE PHYSIOLOGY 2021; 41:544-561. [PMID: 32975290 DOI: 10.1093/treephys/tpaa122] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 12/10/2019] [Accepted: 09/13/2020] [Indexed: 05/21/2023]
Abstract
In temperate trees, optimal timing and quality of flowering directly depend on adequate winter dormancy progression, regulated by a combination of chilling and warm temperatures. Physiological, genetic and functional genomic studies have shown that hormones play a key role in bud dormancy establishment, maintenance and release. We combined physiological and transcriptional analyses, quantification of abscisic acid (ABA) and gibberellins (GAs), and modeling to further investigate how these signaling pathways are associated with dormancy progression in the flower buds of two sweet cherry cultivars. Our results demonstrated that GA-associated pathways have distinct functions and may be differentially related with dormancy. In addition, ABA levels rise at the onset of dormancy, associated with enhanced expression of ABA biosynthesis PavNCED genes, and decreased prior to dormancy release. Following the observations that ABA levels are correlated with dormancy depth, we identified PavUG71B6, a sweet cherry UDP-GLYCOSYLTRANSFERASE gene that up-regulates active catabolism of ABA to ABA glucosyl ester (ABA-GE) and may be associated with low ABA content in the early cultivar. Subsequently, we modeled ABA content and dormancy behavior in three cultivars based on the expression of a small set of genes regulating ABA levels. These results strongly suggest the central role of ABA pathway in the control of dormancy progression and open up new perspectives for the development of molecular-based phenological modeling.
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Affiliation(s)
- Noémie Vimont
- Univ. Bordeaux, INRAE, Biologie du Fruit et Pathologie, UMR 1332, av. Edouard Bourlaux, 33140 Villenave d'Ornon, France
- Agro Innovation International - Centre Mondial d'Innovation - Groupe Roullier, 35400 St Malo, France
- The Sainsbury Laboratory, University of Cambridge, Bateman St., Cambridge CB2 1LR, United Kingdom
| | - Adrian Schwarzenberg
- Agro Innovation International - Centre Mondial d'Innovation - Groupe Roullier, 35400 St Malo, France
| | - Mirela Domijan
- Dept. of Mathematical Sciences, University of Liverpool, Peach St., Liverpool L69 7ZL, United Kingdom
| | - Armel S L Donkpegan
- Univ. Bordeaux, INRAE, Biologie du Fruit et Pathologie, UMR 1332, av. Edouard Bourlaux, 33140 Villenave d'Ornon, France
| | - Rémi Beauvieux
- Univ. Bordeaux, INRAE, Biologie du Fruit et Pathologie, UMR 1332, av. Edouard Bourlaux, 33140 Villenave d'Ornon, France
| | - Loïck le Dantec
- Univ. Bordeaux, INRAE, Biologie du Fruit et Pathologie, UMR 1332, av. Edouard Bourlaux, 33140 Villenave d'Ornon, France
| | - Mustapha Arkoun
- Agro Innovation International - Centre Mondial d'Innovation - Groupe Roullier, 35400 St Malo, France
| | - Frank Jamois
- Agro Innovation International - Centre Mondial d'Innovation - Groupe Roullier, 35400 St Malo, France
| | - Jean-Claude Yvin
- Agro Innovation International - Centre Mondial d'Innovation - Groupe Roullier, 35400 St Malo, France
| | - Philip A Wigge
- Leibniz-Institut für Gemüse- und Zierpflanzenbau (IGZ), Department for Plant Adaptation, Theodor-Echtermeyer-Weg 1, 14979 Groβbeeren, Germany
| | - Elisabeth Dirlewanger
- Univ. Bordeaux, INRAE, Biologie du Fruit et Pathologie, UMR 1332, av. Edouard Bourlaux, 33140 Villenave d'Ornon, France
| | - Sandra Cortijo
- The Sainsbury Laboratory, University of Cambridge, Bateman St., Cambridge CB2 1LR, United Kingdom
| | - Bénédicte Wenden
- Univ. Bordeaux, INRAE, Biologie du Fruit et Pathologie, UMR 1332, av. Edouard Bourlaux, 33140 Villenave d'Ornon, France
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Del Pilar Martínez-Diz M, Díaz-Losada E, Andrés-Sodupe M, Bujanda R, Maldonado-González MM, Ojeda S, Yacoub A, Rey P, Gramaje D. Field evaluation of biocontrol agents against black-foot and Petri diseases of grapevine. PEST MANAGEMENT SCIENCE 2021; 77:697-708. [PMID: 32841479 DOI: 10.1002/ps.6064] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/11/2020] [Accepted: 08/25/2020] [Indexed: 05/09/2023]
Abstract
BACKGROUND Black-foot and Petri diseases are the main fungal diseases associated with young grapevine decline. Two field experiments were established to evaluate the preventive effect of two potential biocontrol agents (BCAs), that is Streptomyces sp. E1 + R4 and Pythium oligandrum Po37, and three BCA-commercial products containing Trichoderma atroviride SC1, Trichoderma koningii TK7 and Pseudomonas fluorescens + Bacillus atrophaeus on fungal infection in grafted plants and plant growth parameters. RESULTS The effectiveness of some BCA in reducing the incidence and severity of both diseases was dependent on the plant part analyzed and the plant age. No single BCA application was able to control both diseases. Streptomyces sp. E1 + R4 were able to reduce significantly the infection of the most prevalent black-foot disease fungi while P. oligandrum Po37 and Trichoderma spp. were able to reduce significantly Phaeomoniella chlamydospora and Phaeoacremonium minimum (Petri disease) infection. BCA treatments had no effect on the shoot weight, and root weight was significantly lower in all BCA treatments with respect to the control. CONCLUSIONS The combination of the disease-suppressive activity of two or more beneficial microbes in a biocontrol preparation is required to prevent infection by black-foot and Petri disease fungi in vineyards.
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Affiliation(s)
- María Del Pilar Martínez-Diz
- Estación de Viticultura e Enoloxía de Galicia (AGACAL-EVEGA), Ourense, Spain
- Facultade de Ciencias, Universidade da Coruña, A Coruña, Spain
| | - Emilia Díaz-Losada
- Estación de Viticultura e Enoloxía de Galicia (AGACAL-EVEGA), Ourense, Spain
| | - Marcos Andrés-Sodupe
- Instituto de Ciencias de la Vid y del Vino (ICVV), Consejo Superior de Investigaciones Científicas, Universidad de la Rioja, Gobierno de La Rioja, Logroño, Spain
| | - Rebeca Bujanda
- Instituto de Ciencias de la Vid y del Vino (ICVV), Consejo Superior de Investigaciones Científicas, Universidad de la Rioja, Gobierno de La Rioja, Logroño, Spain
| | - María M Maldonado-González
- Instituto de Ciencias de la Vid y del Vino (ICVV), Consejo Superior de Investigaciones Científicas, Universidad de la Rioja, Gobierno de La Rioja, Logroño, Spain
| | - Sonia Ojeda
- Instituto de Ciencias de la Vid y del Vino (ICVV), Consejo Superior de Investigaciones Científicas, Universidad de la Rioja, Gobierno de La Rioja, Logroño, Spain
| | - Amira Yacoub
- INRA, ISVV, UMR1065 SAVE, Villenave d'Ornon, France
| | - Patrice Rey
- INRA, ISVV, UMR1065 SAVE, Villenave d'Ornon, France
| | - David Gramaje
- Instituto de Ciencias de la Vid y del Vino (ICVV), Consejo Superior de Investigaciones Científicas, Universidad de la Rioja, Gobierno de La Rioja, Logroño, Spain
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Feiner A, Pitra N, Matthews P, Pillen K, Wessjohann LA, Riewe D. Downy mildew resistance is genetically mediated by prophylactic production of phenylpropanoids in hop. PLANT, CELL & ENVIRONMENT 2021; 44:323-338. [PMID: 33037636 DOI: 10.1111/pce.13906] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 09/08/2020] [Accepted: 10/01/2020] [Indexed: 05/25/2023]
Abstract
Downy mildew in hop (Humulus lupulus L.) is caused by Pseudoperonospora humuli and generates significant losses in quality and yield. To identify the biochemical processes that confer natural downy mildew resistance (DMR), a metabolome- and genome-wide association study was performed. Inoculation of a high density genotyped F1 hop population (n = 192) with the obligate biotrophic oomycete P. humuli led to variation in both the levels of thousands of specialized metabolites and DMR. We observed that metabolites of almost all major phytochemical classes were induced 48 hr after inoculation. But only a small number of metabolites were found to be correlated with DMR and these were enriched with phenylpropanoids. These metabolites were also correlated with DMR when measured from the non-infected control set. A genome-wide association study revealed co-localization of the major DMR loci and the phenylpropanoid pathway markers indicating that the major contribution to resistance is mediated by these metabolites in a heritable manner. The application of three putative prophylactic phenylpropanoids led to a reduced degree of leaf infection in susceptible genotypes, confirming their protective activity either directly or as precursors of active compounds.
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Affiliation(s)
- Alexander Feiner
- Plant Science and Breeding, Simon H. Steiner, Hopfen GmbH, Mainburg, Germany
- Deptartment of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry (IPB), Halle/Saale, Germany
| | - Nicholi Pitra
- Research and Development, S.S. Steiner, Inc., New York, USA
| | - Paul Matthews
- Research and Development, S.S. Steiner, Inc., New York, USA
| | - Klaus Pillen
- Institute of Agricultural and Nutritional Sciences, Martin-Luther University (MLU), Halle/Saale, Germany
| | - Ludger A Wessjohann
- Deptartment of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry (IPB), Halle/Saale, Germany
| | - David Riewe
- Department of Molecular Genetics, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Seeland, Germany
- Institute for Ecological Chemistry, Plant Analysis and Stored Product Protection, Julius Kühn-Institute (JKI), Federal Research Centre for Cultivated Plants, Berlin, Germany
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30
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Wang R, Wang HL, Tang RP, Sun MY, Chen TM, Duan XC, Lu XF, Liu D, Shi XC, Laborda P, Wang SY. Pseudomonas putida Represses JA- and SA-Mediated Defense Pathways in Rice and Promotes an Alternative Defense Mechanism Possibly through ABA Signaling. PLANTS 2020; 9:plants9121641. [PMID: 33255501 PMCID: PMC7760693 DOI: 10.3390/plants9121641] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/17/2020] [Accepted: 11/22/2020] [Indexed: 12/05/2022]
Abstract
The signaling pathways induced by Pseudomonas putida in rice plants at the early plant–rhizobacteria interaction stages, with and without inoculation of Xanthomonas oryzae pv. oryzae, were studied. In the absence of pathogen, P. putida reduced ethylene (ET) production, and promoted root and stem elongation. Interestingly, gene OsHDA702, which plays an important role in root formation, was found significantly up-regulated in the presence of the rhizobacterium. Although X. oryzae pv. oryzae inoculation enhanced ET production in rice plants, P. putida treatment repressed ET-, jasmonic acid (JA)- and salicylic acid (SA)-mediated defense pathways, and induced the biosynthesis of abscisic acid (ABA), and the overexpression of OsHDA705 and some pathogenesis-related proteins (PRs), which in turn increased the susceptibility of the rice plants against the pathogen. Collectively, this is the first work on the defense signaling induced by plant growth-promoting rhizobacteria in plants at the early interaction stages, and suggests that rhizobacteria stimulate an alternative defense mechanism in plants based on ABA accumulation and OsHDA705 signaling.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Xin-Chi Shi
- Correspondence: (X.-C.S.); (P.L.); (S.-Y.W.)
| | | | - Su-Yan Wang
- Correspondence: (X.-C.S.); (P.L.); (S.-Y.W.)
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31
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Nguyen NH, Trotel-Aziz P, Villaume S, Rabenoelina F, Schwarzenberg A, Nguema-Ona E, Clément C, Baillieul F, Aziz A. Bacillus subtilis and Pseudomonas fluorescens Trigger Common and Distinct Systemic Immune Responses in Arabidopsis thaliana Depending on the Pathogen Lifestyle. Vaccines (Basel) 2020; 8:vaccines8030503. [PMID: 32899695 PMCID: PMC7563191 DOI: 10.3390/vaccines8030503] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 08/27/2020] [Accepted: 09/02/2020] [Indexed: 11/16/2022] Open
Abstract
Plants harbor various beneficial bacteria that modulate their innate immunity, resulting in induced systemic resistance (ISR) against various pathogens. However, the immune mechanisms underlying ISR triggered by Bacillus spp. and Pseudomonas spp. against pathogens with different lifestyles are not yet clearly elucidated. Here, we show that root drenching of Arabidopsis plants with Pseudomonas fluorescensPTA-CT2 and Bacillus subtilis PTA-271 can induce ISR against the necrotrophic fungus B. cinerea and the hemibiotrophic bacterium Pseudomonas syringae Pst DC3000. In the absence of pathogen infection, both beneficial bacteria do not induce any consistent change in systemic immune responses. However, ISR relies on priming faster and robust expression of marker genes for the salicylic acid (SA), jasmonic acid (JA), and ethylene (ET) signaling pathways upon pathogen challenge. These responses are also associated with increased levels of SA, JA, and abscisic acid (ABA) in the leaves of bacterized plants after infection. The functional study also points at priming of the JA/ET and NPR1-dependent defenses as prioritized immune pathways in ISR induced by both beneficial bacteria against B. cinerea. However, B. subtilis-triggered ISR against Pst DC3000 is dependent on SA, JA/ET, and NPR1 pathways, whereas P. fluorescens-induced ISR requires JA/ET and NPR1 signaling pathways. The use of ABA-insensitive mutants also pointed out the crucial role of ABA signaling, but not ABA concentration, along with JA/ET signaling in primed systemic immunity by beneficial bacteria against Pst DC3000, but not against B. cinerea. These results clearly indicate that ISR is linked to priming plants for enhanced common and distinct immune pathways depending on the beneficial strain and the pathogen lifestyle.
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Affiliation(s)
- Ngoc Huu Nguyen
- Induced Resistance and Plant Bioprotection EA 4707, SFR Condorcet FR-CNRS 3417, UFR Sciences, Campus Moulin de la Housse, University of Reims, CEDEX 02, 51687 Reims, France; (N.H.N.); (P.T.-A.); (S.V.); (F.R.); (C.C.); (F.B.)
| | - Patricia Trotel-Aziz
- Induced Resistance and Plant Bioprotection EA 4707, SFR Condorcet FR-CNRS 3417, UFR Sciences, Campus Moulin de la Housse, University of Reims, CEDEX 02, 51687 Reims, France; (N.H.N.); (P.T.-A.); (S.V.); (F.R.); (C.C.); (F.B.)
| | - Sandra Villaume
- Induced Resistance and Plant Bioprotection EA 4707, SFR Condorcet FR-CNRS 3417, UFR Sciences, Campus Moulin de la Housse, University of Reims, CEDEX 02, 51687 Reims, France; (N.H.N.); (P.T.-A.); (S.V.); (F.R.); (C.C.); (F.B.)
| | - Fanja Rabenoelina
- Induced Resistance and Plant Bioprotection EA 4707, SFR Condorcet FR-CNRS 3417, UFR Sciences, Campus Moulin de la Housse, University of Reims, CEDEX 02, 51687 Reims, France; (N.H.N.); (P.T.-A.); (S.V.); (F.R.); (C.C.); (F.B.)
| | - Adrian Schwarzenberg
- Centre Mondial de l’Innovation, Groupe Roullier, 35401 Saint-Malo, France; (A.S.); (E.N.-O.)
| | - Eric Nguema-Ona
- Centre Mondial de l’Innovation, Groupe Roullier, 35401 Saint-Malo, France; (A.S.); (E.N.-O.)
| | - Christophe Clément
- Induced Resistance and Plant Bioprotection EA 4707, SFR Condorcet FR-CNRS 3417, UFR Sciences, Campus Moulin de la Housse, University of Reims, CEDEX 02, 51687 Reims, France; (N.H.N.); (P.T.-A.); (S.V.); (F.R.); (C.C.); (F.B.)
| | - Fabienne Baillieul
- Induced Resistance and Plant Bioprotection EA 4707, SFR Condorcet FR-CNRS 3417, UFR Sciences, Campus Moulin de la Housse, University of Reims, CEDEX 02, 51687 Reims, France; (N.H.N.); (P.T.-A.); (S.V.); (F.R.); (C.C.); (F.B.)
| | - Aziz Aziz
- Induced Resistance and Plant Bioprotection EA 4707, SFR Condorcet FR-CNRS 3417, UFR Sciences, Campus Moulin de la Housse, University of Reims, CEDEX 02, 51687 Reims, France; (N.H.N.); (P.T.-A.); (S.V.); (F.R.); (C.C.); (F.B.)
- Correspondence:
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