1
|
Djennane S, Gersch S, Le-Bohec F, Piron MC, Baltenweck R, Lemaire O, Merdinoglu D, Hugueney P, Nogué F, Mestre P. CRISPR/Cas9 editing of Downy mildew resistant 6 (DMR6-1) in grapevine leads to reduced susceptibility to Plasmopara viticola. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:2100-2112. [PMID: 38069501 DOI: 10.1093/jxb/erad487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 12/04/2023] [Indexed: 03/28/2024]
Abstract
Downy mildew of grapevine (Vitis vinifera), caused by the oomycete Plasmopara viticola, is an important disease that is present in cultivation areas worldwide, and using resistant varieties provides an environmentally friendly alternative to fungicides. DOWNY MILDEW RESISTANT 6 (DMR6) from Arabidopsis is a negative regulator of plant immunity and its loss of function confers resistance to downy mildew. In grapevine, DMR6 is present in two copies, named VvDMR6-1 and VvDMR6-2. Here, we describe the editing of VvDMR6-1 in embryogenic calli using CRISPR/Cas9 and the regeneration of the edited plants. All edited plants were found to be biallelic and chimeric, and whilst they all showed reduced growth compared with non-transformed control plants, they also had reduced susceptibility to P. viticola. Comparison between mock-inoculated genotypes showed that all edited lines presented higher levels of salicylic acid than controls, and lines subjected to transformation presented higher levels of cis-resveratrol than controls. Our results identify VvDMR6-1 as a promising target for breeding grapevine cultivars with improved resistance to downy mildew.
Collapse
Affiliation(s)
- Samia Djennane
- INRAE, Université de Strasbourg, UMR SVQV, 68000 Colmar, France
| | - Sophie Gersch
- INRAE, Université de Strasbourg, UMR SVQV, 68000 Colmar, France
| | | | | | | | - Olivier Lemaire
- INRAE, Université de Strasbourg, UMR SVQV, 68000 Colmar, France
| | | | | | - Fabien Nogué
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France
| | - Pere Mestre
- INRAE, Université de Strasbourg, UMR SVQV, 68000 Colmar, France
| |
Collapse
|
2
|
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.
Collapse
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
| |
Collapse
|
3
|
Vigneron N, Grimplet J, Remolif E, Rienth M. Unravelling molecular mechanisms involved in resistance priming against downy mildew (Plasmopara viticola) in grapevine (Vitis vinifera L.). Sci Rep 2023; 13:14664. [PMID: 37674030 PMCID: PMC10482922 DOI: 10.1038/s41598-023-41981-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 09/04/2023] [Indexed: 09/08/2023] Open
Abstract
Downy mildew (DM; Plasmopara viticola) is amongst the most severe fungal diseases in viticulture and the reason for the majority of fungicide applications. To reduce synthetic and copper-based fungicides, there is an urgent need for natural alternatives, which are being increasingly tested by the industry and the research community. However, their mode of action remains unclear. Therefore, our study aimed to investigate the transcriptomic changes induced by oregano essential oil vapour (OEOV) in DM-infected grapevines. OEOV was applied at different time points before and after DM infection to differentiate between a priming effect and a direct effect. Both pre-DM treatment with OEOV and post-infection treatment resulted in a significant reduction in DM sporulation. RNA-seq, followed by differential gene expression and weighted gene co-expression network analysis, identified co-expressed gene modules associated with secondary metabolism, pathogen recognition and response. Surprisingly, the molecular mechanisms underlying the efficiency of OEOV against DM appear to be independent of stilbene synthesis, and instead involve genes from a putative signalling pathway that has yet to be characterized. This study enhances our understanding of the molecular regulation of innate plant immunity and provides new insights into the mode of action of alternative natural antifungal agents.
Collapse
Affiliation(s)
- Nicolas Vigneron
- University of Sciences and Art Western Switzerland, Changins College for Viticulture and Enology, Route de Duillier 60, 1260, Nyon, Switzerland
| | - Jérôme Grimplet
- Departamento de Ciencia Vegetal, Centro de Investigación y Tecnología Agroalimentaria de Aragón, Avda. Montanaña 930, 50059, Zaragoza, Spain
- Instituto Agroalimentario de Aragón-IA2 (CITA-Universidad de Zaragoza), 50013, Zaragoza, Spain
| | - Eric Remolif
- Agroscope, Plant Protection, Mycology, Route de Duillier 60, 1260, Nyon, Switzerland
| | - Markus Rienth
- University of Sciences and Art Western Switzerland, Changins College for Viticulture and Enology, Route de Duillier 60, 1260, Nyon, Switzerland.
| |
Collapse
|
4
|
Wilson SK, Pretorius T, Naidoo S. Mechanisms of systemic resistance to pathogen infection in plants and their potential application in forestry. BMC PLANT BIOLOGY 2023; 23:404. [PMID: 37620815 PMCID: PMC10463331 DOI: 10.1186/s12870-023-04391-9] [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: 04/21/2023] [Accepted: 07/24/2023] [Indexed: 08/26/2023]
Abstract
BACKGROUND The complex systemic responses of tree species to fight pathogen infection necessitate attention due to the potential for yield protection in forestry. RESULTS In this paper, both the localized and systemic responses of model plants, such as Arabidopsis and tobacco, are reviewed. These responses were compared to information available that investigates similar responses in woody plant species and their key differences were highlighted. In addition, tree-specific responses that have been documented were summarised, with the critical responses still relying on certain systemic acquired resistance pathways. Importantly, coniferous species have been shown to utilise phenolic compounds in their immune responses. Here we also highlight the lack of focus on systemic induced susceptibility in trees, which can be important to forest health. CONCLUSIONS This review highlights the possible mechanisms of systemic response to infection in woody plant species, their potential applications, and where research may be best focused in future.
Collapse
Affiliation(s)
- S K Wilson
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, 0028, South Africa
| | - T Pretorius
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, 0028, South Africa
| | - S Naidoo
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, 0028, South Africa.
| |
Collapse
|
5
|
The Biocontrol Potential of Endophytic Trichoderma Fungi Isolated from Hungarian Grapevines, Part II, Grapevine Stimulation. Pathogens 2022; 12:pathogens12010002. [PMID: 36678350 PMCID: PMC9863551 DOI: 10.3390/pathogens12010002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/13/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022] Open
Abstract
In the first part of this two-piece publication, the isolation, identification and in vitro characterization of ten endophytic Trichoderma isolates were reported. Here we report the ability of two different mixes of some of these isolates (Trichoderma simmonsii, Trichoderma orientale and Trichoderma gamsii as well as of Trichoderma afroharzianum and T. simmonsii) to colonize and stimulate the growth of grapevines. Two commercial vineyards about 400 km away from the site of isolation were used as experimental fields, from which the strains of three Trichoderma species were re-isolated up to four years after rootstock soaking treatment with conidiospores, performed before planting. The treatments decreased the overall percentage of lost plants of about 30%, although a low number of lost plants (about 5%) were observed also in the control plot. For all cultivars and clones, the Trichoderma treatments significantly increased both the bud burst ratio and bud burst vigor index. In addition, the grape must parameters such as the Brix degrees, as well as the extract, the D-glucose and the D-fructose concentrations all appeared to be improved, suggesting a potentially higher ethanol content of the produced wine. We conclude that grapevine-endophytic Trichoderma isolates promote plant growth, which could be a useful feature for sustainable agriculture in general and integrated plant production in particular.
Collapse
|
6
|
Ramos M, Daranas N, Llugany M, Tolrà R, Montesinos E, Badosa E. Grapevine response to a Dittrichia viscosa extract and a Bacillus velezensis strain. FRONTIERS IN PLANT SCIENCE 2022; 13:1075231. [PMID: 36589113 PMCID: PMC9803176 DOI: 10.3389/fpls.2022.1075231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 11/28/2022] [Indexed: 06/17/2023]
Abstract
The present study aims to evaluate the response of the three Mediterranean local grapevines 'Garnacha Blanca', 'Garnacha Tinta', and 'Macabeo' to treatments with biocontrol products, namely a botanical extract (Akivi, Dittrichia viscosa extract) and a beneficial microorganism (Bacillus UdG, Bacillus velezensis). A combination of transcriptomics and metabolomics approaches were chosen in order to study grapevine gene expression and to identify gene marker candidates, as well as, to determine differentially concentrated grapevine metabolites in response to biocontrol product treatments. Grapevine plants were cultivated in greenhouse under controlled conditions and submitted to the treatments. Thereafter, leaves were sampled 24h after treatment to carry out the gene expression study by RT-qPCR for the three cultivars and by RNA-sequencing for 'Garnacha Blanca'. Differentially expressed genes (DEGs) were investigated for both treatments and highly influenced DEGs were selected to be tested in the three cultivars as treatment gene markers. In addition, the extraction of leaf components was performed to quantify metabolites, such as phytohormones, organic acids, and phenols. Considering the upregulated and downregulated genes and the enhanced metabolites concentrations, the treatments had an effect on jasmonic acid, ethylene, and phenylpropanoids defense pathways. In addition, several DEG markers were identified presenting a stable overexpression after the treatments in the three grapevine cultivars. These gene markers could be used to monitor the activity of the products in field treatments. Further research will be necessary to confirm these primary results under field conditions.
Collapse
Affiliation(s)
- Mélina Ramos
- Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Girona, Spain
- Plant Physiology (BABVE), Faculty of Biosciences, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Núria Daranas
- Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Girona, Spain
| | - Mercè Llugany
- Plant Physiology (BABVE), Faculty of Biosciences, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Roser Tolrà
- Plant Physiology (BABVE), Faculty of Biosciences, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Emilio Montesinos
- Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Girona, Spain
| | - Esther Badosa
- Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Girona, Spain
| |
Collapse
|
7
|
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.
Collapse
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
| |
Collapse
|
8
|
Zhang W, Wang Z, Dan Z, Zhang L, Xu M, Yang G, Chai M, Li Z, Xie H, Cong L. Transcriptome Analysis of Fusarium Root-Rot-Resistant and -Susceptible Alfalfa (Medicago sativa L.) Plants during Plant–Pathogen Interactions. Genes (Basel) 2022; 13:genes13050788. [PMID: 35627172 PMCID: PMC9140628 DOI: 10.3390/genes13050788] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 04/20/2022] [Accepted: 04/26/2022] [Indexed: 12/04/2022] Open
Abstract
Alfalfa (Medicago sativa L.) is a perennial leguminous forage cultivated globally. Fusarium spp.-induced root rot is a chronic and devastating disease affecting alfalfa that occurs in most production fields. Studying the disease resistance regulatory network and investigating the key genes involved in plant–pathogen resistance can provide vital information for breeding alfalfa that are resistant to Fusarium spp. In this study, a resistant and susceptible clonal line of alfalfa was inoculated with Fusarium proliferatum L1 and sampled at 24 h, 48 h, 72 h, and 7 d post-inoculation for RNA-seq analysis. Among the differentially expressed genes (DEGs) detected between the two clonal lines at the four time points after inoculation, approximately 81.8% were detected at 24 h and 7 d after inoculation. Many DEGs in the two inoculated clonal lines participated in PAMP-triggered immunity (PTI) and effector-triggered immunity (ETI) mechanisms. In addition, transcription factor families such as bHLH, SBP, AP2, WRKY, and MYB were detected in response to infection. These results are an important supplement to the few existing studies on the resistance regulatory network of alfalfa against Fusarium root rot and will help to understand the evolution of host–pathogen interactions.
Collapse
|
9
|
Štambuk P, Šikuten I, Karoglan Kontić J, Maletić E, Preiner D, Tomaz I. Leaf Polyphenolic Profile as a Determinant of Croatian Native Grapevine Varieties' Susceptibility to Plasmopara viticola. FRONTIERS IN PLANT SCIENCE 2022; 13:836318. [PMID: 35360327 PMCID: PMC8963502 DOI: 10.3389/fpls.2022.836318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 02/08/2022] [Indexed: 06/14/2023]
Abstract
Since grapevine is highly susceptible to various pathogens, enormous amounts of pesticides are applied each season to achieve profitable production. One of the most destructive grapevine diseases is downy mildew, and their interaction has been in the spotlight for more than a decade. When it comes to a metabolome level, phenolic compounds are relevant to investigate due to their involvement in the plant immune system and known antifungal properties. Croatian grapevine germplasm is highly heterogeneous due to its long history of cultivation in diversified geographical regions. Since it has been found that native varieties react differently to the infection of Plasmopara viticola, the intention of this study is to define if the chemical background of the leaves, i.e., polyphenolic composition, is responsible for these dissimilarities. Therefore, the leaves of 17 genotypes, among which 14 were native and 3 were controls, were analyzed using high-performance liquid chromatography (HPLC) in four terms: before inoculation and 24, 48, and 96 h post inoculation (hpi). During this early phase, significant differences were found neither between the terms nor between the non-inoculated and inoculated samples, except for resveratrol-3-O-glucoside. By applying principal component analysis (PCA) using initial leaf polyphenolic composition, varieties of V. vinifera were clearly separated into three different groups corresponding to their International Organization of Vine and Wine (OIV) classes of susceptibility to P. viticola. Results obtained in this research suggest that the initial constitutive polyphenolic composition of the cultivar leaves has a crucial influence on their susceptibility to P. viticola, and this finding can be used to improve the success of grapevine breeding programs toward downy mildew resistance.
Collapse
Affiliation(s)
- Petra Štambuk
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Zagreb, Croatia
| | - Iva Šikuten
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Zagreb, Croatia
| | - Jasminka Karoglan Kontić
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Zagreb, Croatia
| | - Edi Maletić
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Zagreb, Croatia
| | - Darko Preiner
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Zagreb, Croatia
| | - Ivana Tomaz
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Zagreb, Croatia
| |
Collapse
|
10
|
Martin IR, Vigne E, Velt A, Hily JM, Garcia S, Baltenweck R, Komar V, Rustenholz C, Hugueney P, Lemaire O, Schmitt-Keichinger C. Severe Stunting Symptoms upon Nepovirus Infection Are Reminiscent of a Chronic Hypersensitive-like Response in a Perennial Woody Fruit Crop. Viruses 2021; 13:2138. [PMID: 34834945 PMCID: PMC8625034 DOI: 10.3390/v13112138] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/14/2021] [Accepted: 10/18/2021] [Indexed: 12/02/2022] Open
Abstract
Virus infection of plants can result in various degrees of detrimental impacts and disparate symptom types and severities. Although great strides have been made in our understanding of the virus-host interactions in herbaceous model plants, the mechanisms underlying symptom development are poorly understood in perennial fruit crops. Grapevine fanleaf virus (GFLV) causes variable symptoms in most vineyards worldwide. To better understand GFLV-grapevine interactions in relation to symptom development, field and greenhouse trials were conducted with a grapevine genotype that exhibits distinct symptoms in response to a severe and a mild strain of GFLV. After validation of the infection status of the experimental vines by high-throughput sequencing, the transcriptomic and metabolomic profiles in plants infected with the two viral strains were tested and compared by RNA-Seq and LC-MS, respectively, in the differentiating grapevine genotype. In vines infected with the severe GFLV strain, 1023 genes, among which some are implicated in the regulation of the hypersensitive-type response, were specifically deregulated, and a higher accumulation of resveratrol and phytohormones was observed. Interestingly, some experimental vines restricted the virus to the rootstock and remained symptomless. Our results suggest that GFLV induces a strain- and cultivar-specific defense reaction similar to a hypersensitive reaction. This type of defense leads to a severe stunting phenotype in some grapevines, whereas others are resistant. This work is the first evidence of a hypersensitive-like reaction in grapevine during virus infection.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Corinne Schmitt-Keichinger
- Santé de la Vigne et Qualité du Vin, INRAE, Université de Strasbourg, 68000 Colmar, France; (E.V.); (A.V.); (J.-M.H.); (S.G.); (R.B.); (V.K.); (C.R.); (P.H.); (O.L.)
| |
Collapse
|
11
|
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.
Collapse
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
| |
Collapse
|
12
|
Peng Z, He Y, Parajuli S, You Q, Wang W, Bhattarai K, Palmateer AJ, Deng Z. Integration of early disease-resistance phenotyping, histological characterization, and transcriptome sequencing reveals insights into downy mildew resistance in impatiens. HORTICULTURE RESEARCH 2021; 8:108. [PMID: 33931631 PMCID: PMC8087834 DOI: 10.1038/s41438-021-00543-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 03/11/2021] [Accepted: 03/22/2021] [Indexed: 05/11/2023]
Abstract
Downy mildew (DM), caused by obligate parasitic oomycetes, is a destructive disease for a wide range of crops worldwide. Recent outbreaks of impatiens downy mildew (IDM) in many countries have caused huge economic losses. A system to reveal plant-pathogen interactions in the early stage of infection and quickly assess resistance/susceptibility of plants to DM is desired. In this study, we established an early and rapid system to achieve these goals using impatiens as a model. Thirty-two cultivars of Impatiens walleriana and I. hawkeri were evaluated for their responses to IDM at cotyledon, first/second pair of true leaf, and mature plant stages. All I. walleriana cultivars were highly susceptible to IDM. While all I. hawkeri cultivars were resistant to IDM starting at the first true leaf stage, many (14/16) were susceptible to IDM at the cotyledon stage. Two cultivars showed resistance even at the cotyledon stage. Histological characterization showed that the resistance mechanism of the I. hawkeri cultivars resembles that in grapevine and type II resistance in sunflower. By integrating full-length transcriptome sequencing (Iso-Seq) and RNA-Seq, we constructed the first reference transcriptome for Impatiens comprised of 48,758 sequences with an N50 length of 2060 bp. Comparative transcriptome and qRT-PCR analyses revealed strong candidate genes for IDM resistance, including three resistance genes orthologous to the sunflower gene RGC203, a potential candidate associated with DM resistance. Our approach of integrating early disease-resistance phenotyping, histological characterization, and transcriptome analysis lay a solid foundation to improve DM resistance in impatiens and may provide a model for other crops.
Collapse
Affiliation(s)
- Ze Peng
- University of Florida, IFAS, Department of Environmental Horticulture, Gulf Coast Research and Education Center, 14625 County Road 672, Wimauma, FL, 33598, USA
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, 510642, Guangzhou, China
| | - Yanhong He
- Visiting scholar at University of Florida, IFAS, Department of Environmental Horticulture, Gulf Coast Research and Education Center, 14625 County Road 672, Wimauma, FL, 33598, USA
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Saroj Parajuli
- University of Florida, IFAS, Department of Environmental Horticulture, Gulf Coast Research and Education Center, 14625 County Road 672, Wimauma, FL, 33598, USA
| | - Qian You
- University of Florida, IFAS, Department of Environmental Horticulture, Gulf Coast Research and Education Center, 14625 County Road 672, Wimauma, FL, 33598, USA
| | - Weining Wang
- University of Florida, IFAS, Department of Environmental Horticulture, Gulf Coast Research and Education Center, 14625 County Road 672, Wimauma, FL, 33598, USA
| | - Krishna Bhattarai
- University of Florida, IFAS, Department of Environmental Horticulture, Gulf Coast Research and Education Center, 14625 County Road 672, Wimauma, FL, 33598, USA
| | - Aaron J Palmateer
- University of Florida, IFAS, Department of Plant Pathology, Tropical Research and Education Center, 18905 S.W. 280th Street, Homestead, FL, 33031, USA
- Bayer Environmental Science US, 5000 Centregreen Way, Cary, NC, 27513, USA
| | - Zhanao Deng
- University of Florida, IFAS, Department of Environmental Horticulture, Gulf Coast Research and Education Center, 14625 County Road 672, Wimauma, FL, 33598, USA.
| |
Collapse
|
13
|
Ricciardi V, Marcianò D, Sargolzaei M, Maddalena G, Maghradze D, Tirelli A, Casati P, Bianco PA, Failla O, Fracassetti D, Toffolatti SL, De Lorenzis G. From plant resistance response to the discovery of antimicrobial compounds: The role of volatile organic compounds (VOCs) in grapevine downy mildew infection. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 160:294-305. [PMID: 33540332 DOI: 10.1016/j.plaphy.2021.01.035] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 01/21/2021] [Indexed: 05/21/2023]
Abstract
The discovery of new mechanisms of resistance and natural bioactive molecules could be two of the possible ways to reduce fungicide use in vineyard and assure an acceptable and sustainable protection against Plasmopara viticola, the grapevine downy mildew agent. Emission of volatile organic compounds (VOCs), such as terpenes, norisoprenoids, alcohols and aldehydes, is frequently induced in plants in response to attack by pathogens, such as P. viticola, that is known to cause a VOCs increment in cultivars harboring American resistance traits. In this study, the role of leaf VOCs in the resistance mechanism of two resistant cultivars (Mgaloblishvili, a pure Vitis vinifera cultivar, and Bianca, an interspecific hybrid) and the direct antimicrobial activity of four selected VOCs have been investigated. The leaf VOCs profiles, analyzed through solid-phase microextraction gas chromatography-mass spectrometry analysis, as well as the expression of six terpene synthases (TPSs), were determined upon pathogen inoculation. In both cultivars, the expression pattern of six TPSs increased soon after pathogen inoculation and an increment of nine VOCs has been detected. While in Mgaloblishvili VOCs were synthesized early after P. viticola inoculation, they constituted a late response to pathogen in Bianca. All the four terpenes (farnesene, nerolidol, ocimene and valencene), chosen according to the VOC profiles and gene expression analysis, caused a significant reduction (53-100%) in P. viticola sporulation. These results support the role of VOCs into defense mechanisms of both cultivars and suggest their potential role as a natural and eco-friendly solution to protect grapevine from P. viticola.
Collapse
Affiliation(s)
- Valentina Ricciardi
- Department of Agricultural and Environmental Sciences, via Celoria 2, 20133, Milan, Italy
| | - Demetrio Marcianò
- Department of Agricultural and Environmental Sciences, via Celoria 2, 20133, Milan, Italy
| | - Maryam Sargolzaei
- Department of Agricultural and Environmental Sciences, via Celoria 2, 20133, Milan, Italy
| | - Giuliana Maddalena
- Department of Agricultural and Environmental Sciences, via Celoria 2, 20133, Milan, Italy
| | - David Maghradze
- National Wine Agency of Georgia, Marshal Gelovani Avenue 6, 0159, Tbilisi, Georgia; Caucasus International University, Chargali str. 73, 0141, Tbilisi, Georgia
| | - Antonio Tirelli
- Department of Food Environmental and Nutritional Sciences, via Celoria 2, 20133, Milan, Italy
| | - Paola Casati
- Department of Agricultural and Environmental Sciences, via Celoria 2, 20133, Milan, Italy
| | - Piero Attilio Bianco
- Department of Agricultural and Environmental Sciences, via Celoria 2, 20133, Milan, Italy
| | - Osvaldo Failla
- Department of Agricultural and Environmental Sciences, via Celoria 2, 20133, Milan, Italy
| | - Daniela Fracassetti
- Department of Food Environmental and Nutritional Sciences, via Celoria 2, 20133, Milan, Italy
| | | | - Gabriella De Lorenzis
- Department of Agricultural and Environmental Sciences, via Celoria 2, 20133, Milan, Italy.
| |
Collapse
|
14
|
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.
Collapse
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
| |
Collapse
|
15
|
Barroso-Bergadà D, Pauvert C, Vallance J, Delière L, Bohan DA, Buée M, Vacher C. Microbial networks inferred from environmental DNA data for biomonitoring ecosystem change: Strengths and pitfalls. Mol Ecol Resour 2020; 21:762-780. [PMID: 33245839 DOI: 10.1111/1755-0998.13302] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 11/13/2020] [Indexed: 01/04/2023]
Abstract
Environmental DNA contains information on the species interaction networks that support ecosystem functions and services. Next-generation biomonitoring proposes the use of this data to reconstruct ecological networks in real time and then compute network-level properties to assess ecosystem change. We investigated the relevance of this proposal by assessing: (i) the replicability of DNA-based networks in the absence of ecosystem change, and (ii) the benefits and shortcomings of community- and network-level properties for monitoring change. We selected crop-associated microbial networks as a case study because they support disease regulation services in agroecosystems and analysed their response to change in agricultural practice between organic and conventional systems. Using two statistical methods of network inference, we showed that network-level properties, especially β-properties, could detect change. Moreover, consensus networks revealed robust signals of interactions between the most abundant species, which differed between agricultural systems. These findings complemented those obtained with community-level data that showed, in particular, a greater microbial diversity in the organic system. The limitations of network-level data included (i) the very high variability of network replicates within each system; (ii) the low number of network replicates per system, due to the large number of samples needed to build each network; and (iii) the difficulty in interpreting links of inferred networks. Tools and frameworks developed over the last decade to infer and compare microbial networks are therefore relevant to biomonitoring, provided that the DNA metabarcoding data sets are large enough to build many network replicates and progress is made to increase network replicability and interpretation.
Collapse
Affiliation(s)
- Didac Barroso-Bergadà
- INRAE, Université Bourgogne, Université Bourgogne Franche-Comté, Agroécologie, Dijon, France
| | | | - Jessica Vallance
- INRAE, ISVV, SAVE, Villenave d'Ornon, France.,Bordeaux Sciences Agro, Univ. Bordeaux, SAVE, Gradignan, France
| | - Laurent Delière
- INRAE, ISVV, SAVE, Villenave d'Ornon, France.,INRAE, Vigne Bordeaux, Villenave d'Ornon, France
| | - David A Bohan
- INRAE, Université Bourgogne, Université Bourgogne Franche-Comté, Agroécologie, Dijon, France
| | - Marc Buée
- INRAE, Université de Lorraine, IAM, Champenoux, France
| | | |
Collapse
|
16
|
Plasmopara viticola infection affects mineral elements allocation and distribution in Vitis vinifera leaves. Sci Rep 2020; 10:18759. [PMID: 33127977 PMCID: PMC7603344 DOI: 10.1038/s41598-020-75990-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 10/05/2020] [Indexed: 12/21/2022] Open
Abstract
Plasmopara viticola is one of the most important pathogens infecting Vitis vinifera plants. The interactions among P. viticola and both susceptible and resistant grapevine plants have been extensively characterised, at transcriptomic, proteomic and metabolomic levels. However, the involvement of plants ionome in the response against the pathogen has been completely neglected so far. Therefore, this study was aimed at investigating the possible role of leaf ionomic modulation during compatible and incompatible interactions between P. viticola and grapevine plants. In susceptible cultivars, a dramatic redistribution of mineral elements has been observed, thus uncovering a possible role for mineral nutrients in the response against pathogens. On the contrary, the resistant cultivars did not present substantial rearrangement of mineral elements at leaf level, except for manganese (Mn) and iron (Fe). This might demonstrate that, resistant cultivars, albeit expressing the resistance gene, still exploit a pathogen response mechanism based on the local increase in the concentration of microelements, which are involved in the synthesis of secondary metabolites and reactive oxygen species. Moreover, these data also highlight the link between the mineral nutrition and plants' response to pathogens, further stressing that appropriate fertilization strategies can be fundamental for the expression of response mechanisms against pathogens.
Collapse
|
17
|
Wang X, Peng J, Sun L, Bonito G, Guo Y, Li Y, Fu Y. Genome Sequencing of Paecilomyces Penicillatus Provides Insights into Its Phylogenetic Placement and Mycoparasitism Mechanisms on Morel Mushrooms. Pathogens 2020; 9:pathogens9100834. [PMID: 33065983 PMCID: PMC7650745 DOI: 10.3390/pathogens9100834] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 10/05/2020] [Accepted: 10/09/2020] [Indexed: 12/17/2022] Open
Abstract
Morels (Morchella spp.) are popular edible fungi with significant economic and scientific value. However, white mold disease, caused by Paecilomyces penicillatus, can reduce morel yield by up to 80% in the main cultivation area in China. Paecilomyces is a polyphyletic genus and the exact phylogenetic placement of P. penicillatus is currently still unclear. Here, we obtained the first high-quality genome sequence of P. penicillatus generated through the single-molecule real-time (SMRT) sequencing platform. The assembled draft genome of P. penicillatus was 40.2 Mb, had an N50 value of 2.6 Mb and encoded 9454 genes. Phylogenetic analysis of single-copy orthologous genes revealed that P. penicillatus is in Hypocreales and closely related to Hypocreaceae, which includes several genera exhibiting a mycoparasitic lifestyle. CAZymes analysis demonstrated that P. penicillatus encodes a large number of fungal cell wall degradation enzymes. We identified many gene clusters involved in the production of secondary metabolites known to exhibit antifungal, antibacterial, or insecticidal activities. We further demonstrated through dual culture assays that P. penicillatus secretes certain soluble compounds that are inhibitory to the mycelial growth of Morchella sextelata. This study provides insights into the correct phylogenetic placement of P. penicillatus and the molecular mechanisms that underlie P. penicillatus pathogenesis.
Collapse
Affiliation(s)
- Xinxin Wang
- Department of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China;
- Engineering Research Center of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; (L.S.); (Y.L.)
- Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI 48842, USA; (J.P.); (G.B.)
| | - Jingyu Peng
- Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI 48842, USA; (J.P.); (G.B.)
| | - Lei Sun
- Engineering Research Center of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; (L.S.); (Y.L.)
| | - Gregory Bonito
- Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI 48842, USA; (J.P.); (G.B.)
| | - Yuxiu Guo
- Life Science College, Northeast Normal University, Changchun 130118, China;
| | - Yu Li
- Department of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China;
- Engineering Research Center of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; (L.S.); (Y.L.)
| | - Yongping Fu
- Engineering Research Center of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; (L.S.); (Y.L.)
- Correspondence:
| |
Collapse
|
18
|
Schmidt J, Dotson BR, Schmiderer L, van Tour A, Kumar B, Marttila S, Fredlund KM, Widell S, Rasmusson AG. Substrate and Plant Genotype Strongly Influence the Growth and Gene Expression Response to Trichoderma afroharzianum T22 in Sugar Beet. PLANTS (BASEL, SWITZERLAND) 2020; 9:plants9081005. [PMID: 32784636 PMCID: PMC7464433 DOI: 10.3390/plants9081005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 07/29/2020] [Accepted: 08/03/2020] [Indexed: 05/23/2023]
Abstract
Many strains of Trichoderma fungi have beneficial effects on plant growth and pathogen control, but little is known about the importance of plant genotype, nor the underlying mechanisms. We aimed to determine the effect of sugar beet genotypic variation on Trichoderma biostimulation. The effect of Trichoderma afroharzianum T22 on sugar beet inbred genotypes were investigated in soil and on sterile agar medium regarding plant growth, and by quantitative reverse transcriptase-linked polymerase chain reaction (qRT-PCR) analysis for gene expression. In soil, T22 application induced up to 30% increase or decrease in biomass, depending on plant genotype. In contrast, T22 treatment of sterile-grown seedlings resulted in a general decrease in fresh weight and root length across all sugar beet genotypes. Root colonization of T22 did not vary between the sugar beet genotypes. Sand- and sterile-grown roots were investigated by qRT-PCR for expression of marker genes for pathogen response pathways. Genotype-dependent effects of T22 on, especially, the jasmonic acid/ethylene expression marker PR3 were observed, and the effects were further dependent on the growth system used. Thus, both growth substrate and sugar beet genotype strongly affect the outcome of inoculation with T. afroharzianum T22.
Collapse
Affiliation(s)
- John Schmidt
- Department of Biology, Lund University, Sölvegatan 35B, SE–223 62 Lund, Sweden; john-- (J.S.); (B.R.D.); (L.S.); (A.v.T.); (B.K.); (S.W.)
- MariboHilleshög AB, Säbyholmsv. 24, 261 91 Landskrona, Sweden;
| | - Bradley R. Dotson
- Department of Biology, Lund University, Sölvegatan 35B, SE–223 62 Lund, Sweden; john-- (J.S.); (B.R.D.); (L.S.); (A.v.T.); (B.K.); (S.W.)
| | - Ludwig Schmiderer
- Department of Biology, Lund University, Sölvegatan 35B, SE–223 62 Lund, Sweden; john-- (J.S.); (B.R.D.); (L.S.); (A.v.T.); (B.K.); (S.W.)
| | - Adriaan van Tour
- Department of Biology, Lund University, Sölvegatan 35B, SE–223 62 Lund, Sweden; john-- (J.S.); (B.R.D.); (L.S.); (A.v.T.); (B.K.); (S.W.)
| | - Banushree Kumar
- Department of Biology, Lund University, Sölvegatan 35B, SE–223 62 Lund, Sweden; john-- (J.S.); (B.R.D.); (L.S.); (A.v.T.); (B.K.); (S.W.)
| | - Salla Marttila
- Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, SE–23053 Alnarp, Sweden;
| | | | - Susanne Widell
- Department of Biology, Lund University, Sölvegatan 35B, SE–223 62 Lund, Sweden; john-- (J.S.); (B.R.D.); (L.S.); (A.v.T.); (B.K.); (S.W.)
| | - Allan G. Rasmusson
- Department of Biology, Lund University, Sölvegatan 35B, SE–223 62 Lund, Sweden; john-- (J.S.); (B.R.D.); (L.S.); (A.v.T.); (B.K.); (S.W.)
| |
Collapse
|
19
|
Yu C, Dou K, Wang S, Wu Q, Ni M, Zhang T, Lu Z, Tang J, Chen J. Elicitor hydrophobin Hyd1 interacts with Ubiquilin1-like to induce maize systemic resistance. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2020; 62:509-526. [PMID: 30803127 DOI: 10.1111/jipb.12796] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 02/18/2019] [Indexed: 06/09/2023]
Abstract
Trichoderma harzianum is a plant-beneficial fungus that secretes small cysteine-rich proteins that induce plant defense responses; however, the molecular mechanism involved in this induction is largely unknown. Here, we report that the class II hydrophobin ThHyd1 acts as an elicitor of induced systemic resistance (ISR) in plants. Immunogold labeling and immunofluorescence revealed ThHyd1 localized on maize (Zea mays) root cell plasma membranes. To identify host plant protein interactors of Hyd1, we screened a maize B73 root cDNA library. ThHyd1 interacted directly with ubiquilin 1-like (UBL). Furthermore, the N-terminal fragment of UBL was primarily responsible for binding with Hyd1 and the eight-cysteine amino acid of Hyd1 participated in the protein-protein interactions. Hyd1 from T. harzianum (Thhyd1) and ubl from maize were co-expressed in Arabidopsis thaliana, they synergistically promoted plant resistance against Botrytis cinerea. RNA-sequencing analysis of global gene expression in maize leaves 24 h after spraying with Curvularia lunata spore suspension showed that Thhyd1-induced systemic resistance was primarily associated with brassinosteroid signaling, likely mediated through BAK1. Jasmonate/ethylene (JA/ET) signaling was also involved to some extent in this response. Our results suggest that the Hyd1-UBL axis might play a key role in inducing systemic resistance as a result of Trichoderma-plant interactions.
Collapse
Affiliation(s)
- Chuanjin Yu
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
- State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Kai Dou
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
- State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Shaoqing Wang
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
- State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Qiong Wu
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
- State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Mi Ni
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
- State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Tailong Zhang
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
- State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Zhixiang Lu
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
- State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jun Tang
- School of Life Science, Fuyang Normal University, Fuyang, 236037, China
| | - Jie Chen
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
- State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, 200240, China
| |
Collapse
|
20
|
Yuan J, Zhang W, Sun K, Tang MJ, Chen PX, Li X, Dai CC. Comparative Transcriptomics and Proteomics of Atractylodes lancea in Response to Endophytic Fungus Gilmaniella sp. AL12 Reveals Regulation in Plant Metabolism. Front Microbiol 2019; 10:1208. [PMID: 31191508 PMCID: PMC6546907 DOI: 10.3389/fmicb.2019.01208] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 05/13/2019] [Indexed: 12/16/2022] Open
Abstract
The fungal endophyte Gilmaniella sp. AL12 can establish a beneficial association with the medicinal herb Atractylodes lancea, and improve plant growth and sesquiterpenoids accumulation, which is termed “double promotion.” Our previous studies have uncovered the underling primary mechanism based on some physiological evidences. However, a global understanding of gene or protein expression regulation in primary and secondary metabolism and related regulatory processes is still lacking. In this study, we employed transcriptomics and proteomics of Gilmaniella sp. AL12-inoculated and Gilmaniella sp. AL12-free plants to study the impact of endophyte inoculation at the transcriptional and translational levels. The results showed that plant genes involved in plant immunity and signaling were suppressed, similar to the plant response caused by some endophytic fungi and biotroph pathogen. The downregulated plant immunity may contribute to plant-endophyte beneficial interaction. Additionally, genes and proteins related to primary metabolism (carbon fixation, carbohydrate metabolism, and energy metabolism) tended to be upregulated after Gilmaniella sp. AL12 inoculation, which was consistent with our previous physiological evidences. And, Gilmaniella sp. AL12 upregulated genes involved in terpene skeleton biosynthesis, and upregulated genes annotated as β-farnesene synthase and β-caryophyllene synthase. Based on the above results, we proposed that endophyte-plant associations may improve production (biomass and sesquiterpenoids accumulation) by increasing the source (photosynthesis), expanding the sink (glycolysis and tricarboxylic acid cycle), and enhancing the metabolic flux (sesquiterpenoids biosynthesis pathway) in A. lancea. And, this study will help to further clarify plant-endophyte interactions.
Collapse
Affiliation(s)
- Jie Yuan
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Wei Zhang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Kai Sun
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Meng-Jun Tang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Piao-Xue Chen
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Xia Li
- Jiangsu High Quality Rice Research and Development Center, Nanjing Branch of Chinese National Center Rice Improvement, Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Chuan-Chao Dai
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, China
| |
Collapse
|
21
|
Cai Y, Yan J, Li Q, Deng Z, Liu S, Lu J, Zhang Y. Sucrose transporters of resistant grapevine are involved in stress resistance. PLANT MOLECULAR BIOLOGY 2019; 100:111-132. [PMID: 30806883 DOI: 10.1007/s11103-019-00847-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 02/20/2019] [Indexed: 05/08/2023]
Abstract
The whole promoter regions of SUTs in Vitis were firstly isolated. SUTs are involved in the adaptation to biotic and abiotic stresses. The vulnerability of Vitis vinifera to abiotic and biotic stresses limits its yields. In contrast, Vitis amurensis displays resistance to environmental stresses, such as microbial pathogens, low temperatures, and drought. Sucrose transporters (SUTs) are important regulators for plant growth and stress tolerance; however, the role that SUTs play in stress resistance in V. amurensis is not known. Using V. amurensis Ruper. 'Zuoshan-1' and V. vinifera 'Chardonnay', we found that SUC27 was highly expressed in several vegetative organs of Zuoshan-1, SUC12 was weakly expressed or absent in most organs in both the species, and the distribution of SUC11 in source and sink organs was highest in Zuoshan-1. A search for cis-regulatory elements in the promoter sequences of SUTs revealed that they were regulated by light, environmental stresses, physiological correlation, and hormones. The SUTs in Zuoshan-1 mostly show a higher and rapid response than in Chardonnay under the induction by Plasmopara viticola infection, cold, water deficit, and dark conditions. The induction of SUTs was associated with the upregulation of key genes involved in sucrose metabolism and the biosynthesis of plant hormones. These results indicate that stress resistance in Zuoshan-1 is governed by the differential distribution and induction of SUTs by various stimuli, and the subsequent promotion of sucrose metabolism and hormone synthesis.
Collapse
Affiliation(s)
- Yumeng Cai
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Jing Yan
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Qike Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Zhefang Deng
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Shaoli Liu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Jiang Lu
- Center for Viticulture and Enology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Yali Zhang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.
| |
Collapse
|
22
|
Nascimento R, Maia M, Ferreira AEN, Silva AB, Freire AP, Cordeiro C, Silva MS, Figueiredo A. Early stage metabolic events associated with the establishment of Vitis vinifera - Plasmopara viticola compatible interaction. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 137:1-13. [PMID: 30710794 DOI: 10.1016/j.plaphy.2019.01.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 01/17/2019] [Accepted: 01/18/2019] [Indexed: 05/25/2023]
Abstract
Grapevine (Vitis vinifera L.) is the most widely cultivated and economically important fruit crop in the world, with 7.5 million of production area in 2017. The domesticated varieties of grapevine are highly susceptible to many fungal infections, of which downy mildew, caused by the biotrophic oomycete Plasmopara viticola (Berk. et Curt.) Berl. et de Toni is one of the most threatening. In V. vinifera, several studies have shown that a weak and transient activation of a defense mechanism occurs, but it is easily overcome by the pathogen leading to the establishment of a compatible interaction. Major transcript, protein and physiologic changes were shown to occur at later infection time-points, but comprehensive data on the first hours of interaction is scarce. In the present work, we investigated the major physiologic and metabolic changes that occur in the first 24 h of interaction between V. vinifera cultivar Trincadeira and P. viticola. Our results show that there was a negative modulation of several metabolic classes associated to pathogen defense such as flavonoids or phenylpropanoids as well as an alteration of carbohydrate content after inoculation with the pathogen. We also found an accumulation of hydrogen peroxide and increase of lipid peroxidation but to a low extent, that seems to be insufficient to restrain pathogen growth during the initial biotrophic phase of the interaction.
Collapse
Affiliation(s)
- Rui Nascimento
- Biosystems & Integrative Sciences Institute (BioISI), Science Faculty of Lisbon University, 1749-016, Lisboa, Portugal
| | - Marisa Maia
- Biosystems & Integrative Sciences Institute (BioISI), Science Faculty of Lisbon University, 1749-016, Lisboa, Portugal; Laboratório de FTICR e Espectrometria de Massa Estrutural, Faculdade de Ciências da Universidade de Lisboa, Portugal; Centro de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Portugal
| | - António E N Ferreira
- Laboratório de FTICR e Espectrometria de Massa Estrutural, Faculdade de Ciências da Universidade de Lisboa, Portugal; Centro de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Portugal
| | - Anabela B Silva
- Biosystems & Integrative Sciences Institute (BioISI), Science Faculty of Lisbon University, 1749-016, Lisboa, Portugal
| | - Ana Ponces Freire
- Centro de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Portugal
| | - Carlos Cordeiro
- Laboratório de FTICR e Espectrometria de Massa Estrutural, Faculdade de Ciências da Universidade de Lisboa, Portugal; Centro de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Portugal
| | - Marta Sousa Silva
- Laboratório de FTICR e Espectrometria de Massa Estrutural, Faculdade de Ciências da Universidade de Lisboa, Portugal; Centro de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Portugal.
| | - Andreia Figueiredo
- Biosystems & Integrative Sciences Institute (BioISI), Science Faculty of Lisbon University, 1749-016, Lisboa, Portugal.
| |
Collapse
|
23
|
Estrada-Rivera M, Rebolledo-Prudencio OG, Pérez-Robles DA, Rocha-Medina MDC, González-López MDC, Casas-Flores S. Trichoderma Histone Deacetylase HDA-2 Modulates Multiple Responses in Arabidopsis. PLANT PHYSIOLOGY 2019; 179:1343-1361. [PMID: 30670606 PMCID: PMC6446751 DOI: 10.1104/pp.18.01092] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 12/10/2018] [Accepted: 01/09/2019] [Indexed: 05/21/2023]
Abstract
Trichoderma spp. are a rich source of secondary metabolites and volatile organic compounds (VOCs), which may induce plant defenses and modulate plant growth. In filamentous fungi, chromatin modifications regulate secondary metabolism. In this study we investigated how the absence of histone deacetylase HDA-2 in the Trichoderma atroviride strain Δhda-2 impacts its effect on a host, Arabidopsis (Arabidopsis thaliana). The production of VOCs and their impact on plant growth and development were assessed as well. The Δhda-2 strain was impaired in its ability to colonize Arabidopsis roots, thus affecting the promotion of plant growth and modulation of plant defenses against foliar pathogens Botrytis cinerea and Pseudomonas syringae, which normally result from interaction with T. atroviride Furthermore, Δhda-2 VOCs were incapable of triggering plant defenses to counterattack foliar pathogens. The Δhda-2 overproduced the VOC 6-pentyl-2H-pyran-2-one (6-PP), which resulted in enhanced root branching and differentially regulated phytohormone-related genes. Analysis of ten VOCs (including 6-PP) revealed that three of them positively regulated plant growth, whereas six had the opposite effect. Assessment of secondary metabolites, detoxification, and communication with plant-related genes showed a dual role for HDA-2 in T. atroviride gene expression regulation during its interaction with plants. Chromatin immunoprecipitation of acetylated histone H3 on the promoters of plant-responsive genes in Δhda-2 showed, in the presence of Arabidopsis, low levels of epl-1 and abc-2 compared with that in the wild type; whereas ctf-1 presented high constitutive levels, supporting a dual role of HDA-2 in gene regulation. This work highlights the importance of HDA-2 as a global regulator in Trichoderma to modulate multiple responses in Arabidopsis.
Collapse
Affiliation(s)
- Magnolia Estrada-Rivera
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica (IPICYT), Camino a la presa San José No. 2055, Colonia Lomas 4a sección. C.P. 78216, San Luis Potosí, Mexico
| | - Oscar Guillermo Rebolledo-Prudencio
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica (IPICYT), Camino a la presa San José No. 2055, Colonia Lomas 4a sección. C.P. 78216, San Luis Potosí, Mexico
| | - Doris Arisbeth Pérez-Robles
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica (IPICYT), Camino a la presa San José No. 2055, Colonia Lomas 4a sección. C.P. 78216, San Luis Potosí, Mexico
| | - Ma Del Carmen Rocha-Medina
- Laboratorio Nacional de Biotecnología Agrícola, Médica y Ambiental, Instituto Potosino de Investigación Científica y Tecnológica (IPICYT), Camino a la presa San José No. 2055, Colonia Lomas 4a sección. C.P. 78216, San Luis Potosí, Mexico
| | - María Del Carmen González-López
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica (IPICYT), Camino a la presa San José No. 2055, Colonia Lomas 4a sección. C.P. 78216, San Luis Potosí, Mexico
| | - Sergio Casas-Flores
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica (IPICYT), Camino a la presa San José No. 2055, Colonia Lomas 4a sección. C.P. 78216, San Luis Potosí, Mexico
| |
Collapse
|
24
|
Yuan M, Huang Y, Ge W, Jia Z, Song S, Zhang L, Huang Y. Involvement of jasmonic acid, ethylene and salicylic acid signaling pathways behind the systemic resistance induced by Trichoderma longibrachiatum H9 in cucumber. BMC Genomics 2019; 20:144. [PMID: 30777003 PMCID: PMC6379975 DOI: 10.1186/s12864-019-5513-8] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 02/06/2019] [Indexed: 01/08/2023] Open
Abstract
Background Trichoderma spp. are effective biocontrol agents for many plant pathogens, thus the mechanism of Trichoderma-induced plant resistance is not fully understood. In this study, a novel Trichoderma strain was identified, which could promote plant growth and reduce the disease index of gray mold caused by Botrytis cinerea in cucumber. To assess the impact of Trichoderma inoculation on the plant response, a multi-omics approach was performed in the Trichoderma-inoculated cucumber plants through the analyses of the plant transcriptome, proteome, and phytohormone content. Results A novel Trichoderma strain was identified by morphological and molecular analysis, here named T. longibrachiatum H9. Inoculation of T. longibrachiatum H9 to cucumber roots promoted plant growth in terms of root length, plant height, and fresh weight. Root colonization of T. longibrachiatum H9 in the outer layer of epidermis significantly inhibited the foliar pathogen B. cinerea infection in cucumber. The plant transcriptome and proteome analyses indicated that a large number of differentially expressed genes (DEGs) and differentially expressed proteins (DEPs) were identified in cucumber plants 96 h post T. longibrachiatum H9 inoculation. Up-regulated DEGs and DEPs were mainly associated with defense/stress processes, secondary metabolism, and phytohormone synthesis and signaling, including jasmonic acid (JA), ethylene (ET) and salicylic acid (SA), in the T. longibrachiatum H9-inoculated cucumber plants in comparison to untreated plants. Moreover, the JA and SA contents significantly increased in cucumber plants with T. longibrachiatum H9 inoculation. Conclusions Application of T. longibrachiatum H9 to the roots of cucumber plants effectively promoted plant growth and significantly reduced the disease index of gray mold caused by B. cinerea. The analyses of the plant transcriptome, proteome and phytohormone content demonstrated that T. longibrachiatum H9 mediated plant systemic resistance to B. cinerea challenge through the activation of signaling pathways associated with the phytohormones JA/ET and SA in cucumber. Electronic supplementary material The online version of this article (10.1186/s12864-019-5513-8) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Min Yuan
- College of Life Sciences, North China University of Science and Technology, Tangshan, 063210, People's Republic of China
| | - Yuanyuan Huang
- Biology Institute, Hebei Academy of Sciences, Shijiazhuang, 050081, People's Republic of China
| | - Weina Ge
- College of Life Sciences, North China University of Science and Technology, Tangshan, 063210, People's Republic of China
| | - Zhenhua Jia
- Biology Institute, Hebei Academy of Sciences, Shijiazhuang, 050081, People's Republic of China
| | - Shuishan Song
- Biology Institute, Hebei Academy of Sciences, Shijiazhuang, 050081, People's Republic of China
| | - Lan Zhang
- College of Life Sciences, North China University of Science and Technology, Tangshan, 063210, People's Republic of China
| | - Yali Huang
- Biology Institute, Hebei Academy of Sciences, Shijiazhuang, 050081, People's Republic of China.
| |
Collapse
|
25
|
Agostini RB, Postigo A, Rius SP, Rech GE, Campos-Bermudez VA, Vargas WA. Long-Lasting Primed State in Maize Plants: Salicylic Acid and Steroid Signaling Pathways as Key Players in the Early Activation of Immune Responses in Silks. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2019; 32:95-106. [PMID: 30253116 DOI: 10.1094/mpmi-07-18-0208-r] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In the present study, we investigated the induced systemic resistance (ISR) activated by the beneficial fungus Trichoderma atroviride in maize plants, and the early immunological responses triggered after challenge with the ear rot pathogen Fusarium verticillioides. By transcriptional analysis, we were able to identify the gene core set specifically modulated in silks of maize plants expressing ISR. Our results showed that the main transcriptional reprogramming falls into genes involved in five main functional categories: cell structure or cell wall, amino acid and protein metabolism, stress responses, signaling, and transport. Among these ISR-related genes, it is important to highlight novel findings regarding hormone metabolism and signaling. The expression of hormone-dependent genes was in good agreement with the abscisic acid, jasmonic acid, and salicylic acid (SA) levels detected in the plants under study. The experimental design allowed the identification of novel regulatory elements related to a heightened state of defense in silks and suggests that steroids and SA are central components of a master regulatory network controlling the immunity of silks during ISR. The results presented also provide evidence about the molecular mechanisms used by maize silks against F. verticillioides to counteract pathogenic development and host invasion, including pathogenesis-related genes, plant cell-wall reinforcement, fungal cell-wall-degrading enzymes and secondary metabolism.
Collapse
Affiliation(s)
- Romina B Agostini
- 1 Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Universidad Nacional de Rosario, Suipacha 531, S2002LRK, Argentina; and
| | - Agustina Postigo
- 1 Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Universidad Nacional de Rosario, Suipacha 531, S2002LRK, Argentina; and
| | - Sebastian P Rius
- 1 Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Universidad Nacional de Rosario, Suipacha 531, S2002LRK, Argentina; and
| | - Gabriel E Rech
- 2 Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37-49, 08003, Barcelona, Spain
| | - Valeria A Campos-Bermudez
- 1 Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Universidad Nacional de Rosario, Suipacha 531, S2002LRK, Argentina; and
| | - Walter A Vargas
- 1 Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Universidad Nacional de Rosario, Suipacha 531, S2002LRK, Argentina; and
| |
Collapse
|
26
|
Lakkis S, Trotel-Aziz P, Rabenoelina F, Schwarzenberg A, Nguema-Ona E, Clément C, Aziz A. Strengthening Grapevine Resistance by Pseudomonas fluorescens PTA-CT2 Relies on Distinct Defense Pathways in Susceptible and Partially Resistant Genotypes to Downy Mildew and Gray Mold Diseases. FRONTIERS IN PLANT SCIENCE 2019; 10:1112. [PMID: 31620150 PMCID: PMC6759587 DOI: 10.3389/fpls.2019.01112] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 08/13/2019] [Indexed: 05/21/2023]
Abstract
Downy mildew caused by the oomycete Plasmopara viticola and gray mold caused by the fungus Botrytis cinerea are among the highly threatening diseases in vineyards. The current strategy to control these diseases relies totally on the application of fungicides. The use of beneficial microbes is arising as a sustainable strategy in controlling various diseases. This can be achieved through the activation of the plants' own immune system, known as induced systemic resistance (ISR). We previously showed that bacteria-mediated ISR in grapevine involves activation of both immune response and priming state upon B. cinerea challenge. However, the effectiveness of beneficial bacteria against the oomycete P. viticola remains unknown, and mechanisms underpinning ISR against pathogens with different lifestyles need to be deciphered. In this study, we focused on the capacity of Pseudomonas fluorescens PTA-CT2 to induce ISR in grapevine against P. viticola and B. cinerea by using two grafted cultivars differing in their susceptibility to downy mildew, Pinot noir as susceptible and Solaris as partially resistant. On the basis of their contrasting phenotypes, we explored mechanisms underlying ISR before and upon pathogen infection. Our results provide evidence that in the absence of pathogen infection, PTA-CT2 does not elicit any consistent change of basal defenses, while it affects hormonal status and enhances photosynthetic efficiency in both genotypes. PTA-CT2 also induces ISR against P. viticola and B. cinerea by priming common and distinct defensive pathways. After P. viticola challenge, PTA-CT2 primes salicylic acid (SA)- and hypersensitive response (HR)-related genes in Solaris, but SA and abscisic acid (ABA) accumulation in Pinot noir. However, ISR against B. cinerea was associated with potentiated ethylene signaling in Pinot noir, but with primed expression of jasmonic acid (JA)- and SA-responsive genes in Solaris, together with downregulation of HR-related gene and accumulation of ABA and phytoalexins.
Collapse
Affiliation(s)
- Sara Lakkis
- Induced Resistance and Plant Bioprotection (RIBP), SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Reims, France
| | - Patricia Trotel-Aziz
- Induced Resistance and Plant Bioprotection (RIBP), SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Reims, France
| | - Fanja Rabenoelina
- Induced Resistance and Plant Bioprotection (RIBP), SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Reims, France
| | | | - Eric Nguema-Ona
- Centre Mondial de l’Innovation, Groupe Roullier, Saint-Malo, France
| | - Christophe Clément
- Induced Resistance and Plant Bioprotection (RIBP), SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Reims, France
| | - Aziz Aziz
- Induced Resistance and Plant Bioprotection (RIBP), SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Reims, France
- *Correspondence: Aziz Aziz,
| |
Collapse
|
27
|
Toffolatti SL, De Lorenzis G, Costa A, Maddalena G, Passera A, Bonza MC, Pindo M, Stefani E, Cestaro A, Casati P, Failla O, Bianco PA, Maghradze D, Quaglino F. Unique resistance traits against downy mildew from the center of origin of grapevine (Vitis vinifera). Sci Rep 2018; 8:12523. [PMID: 30131589 PMCID: PMC6104083 DOI: 10.1038/s41598-018-30413-w] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 07/30/2018] [Indexed: 11/17/2022] Open
Abstract
The Eurasian grapevine (Vitis vinifera), an Old World species now cultivated worldwide for high-quality wine production, is extremely susceptible to the agent of downy mildew, Plasmopara viticola. The cultivation of resistant V. vinifera varieties would be a sustainable way to reduce the damage caused by the pathogen and the impact of disease management, which involves the economic, health and environmental costs of frequent fungicide application. We report the finding of unique downy mildew resistance traits in a winemaking cultivar from the domestication center of V. vinifera, and characterize the expression of a range of genes associated with the resistance mechanism. Based on comparative experimental inoculations, confocal microscopy and transcriptomics analyses, our study shows that V. vinifera cv. Mgaloblishvili, native to Georgia (South Caucasus), exhibits unique resistance traits against P. viticola. Its defense response, leading to a limitation of P. viticola growth and sporulation, is determined by the overexpression of genes related to pathogen recognition, the ethylene signaling pathway, synthesis of antimicrobial compounds and enzymes, and the development of structural barriers. The unique resistant traits found in Mgaloblishvili highlight the presence of a rare defense system in V. vinifera against P. viticola which promises fresh opportunities for grapevine genetic improvement.
Collapse
Affiliation(s)
- Silvia Laura Toffolatti
- Università degli Studi di Milano, Dipartimento di Scienze Agrarie e Ambientali - Produzione, Territorio e Agroenergia (DiSAA), via Celoria 2, 20133, Milano, Italy.
| | - Gabriella De Lorenzis
- Università degli Studi di Milano, Dipartimento di Scienze Agrarie e Ambientali - Produzione, Territorio e Agroenergia (DiSAA), via Celoria 2, 20133, Milano, Italy.
| | - Alex Costa
- Università degli Studi di Milano, Dipartimento di Bioscienze (DBS), via Celoria 26, 20133, Milano, Italy
| | - Giuliana Maddalena
- Università degli Studi di Milano, Dipartimento di Scienze Agrarie e Ambientali - Produzione, Territorio e Agroenergia (DiSAA), via Celoria 2, 20133, Milano, Italy
| | - Alessandro Passera
- Università degli Studi di Milano, Dipartimento di Scienze Agrarie e Ambientali - Produzione, Territorio e Agroenergia (DiSAA), via Celoria 2, 20133, Milano, Italy
| | - Maria Cristina Bonza
- Università degli Studi di Milano, Dipartimento di Bioscienze (DBS), via Celoria 26, 20133, Milano, Italy
| | - Massimo Pindo
- Fondazione E. Mach, Centro Ricerca e Innovazione, Via E. Mach 1, 38010, San Michele all'Adige, (TN), Italy
| | - Erika Stefani
- Fondazione E. Mach, Centro Ricerca e Innovazione, Via E. Mach 1, 38010, San Michele all'Adige, (TN), Italy
| | - Alessandro Cestaro
- Fondazione E. Mach, Centro Ricerca e Innovazione, Via E. Mach 1, 38010, San Michele all'Adige, (TN), Italy
| | - Paola Casati
- Università degli Studi di Milano, Dipartimento di Scienze Agrarie e Ambientali - Produzione, Territorio e Agroenergia (DiSAA), via Celoria 2, 20133, Milano, Italy
| | - Osvaldo Failla
- Università degli Studi di Milano, Dipartimento di Scienze Agrarie e Ambientali - Produzione, Territorio e Agroenergia (DiSAA), via Celoria 2, 20133, Milano, Italy
| | - Piero Attilio Bianco
- Università degli Studi di Milano, Dipartimento di Scienze Agrarie e Ambientali - Produzione, Territorio e Agroenergia (DiSAA), via Celoria 2, 20133, Milano, Italy
| | - David Maghradze
- Scientific - Research Center of Agriculture, Marshal Gelovani Avenue 6, 0159, Tbilisi, Georgia
- Faculty of Agricultural Sciences and Biosystems Engineering, Georgian Technical University, David Guramishvili Avenue 17, 0175, Tbilisi, Georgia
| | - Fabio Quaglino
- Università degli Studi di Milano, Dipartimento di Scienze Agrarie e Ambientali - Produzione, Territorio e Agroenergia (DiSAA), via Celoria 2, 20133, Milano, Italy
| |
Collapse
|
28
|
Vandelle E, Vannozzi A, Wong D, Danzi D, Digby AM, Dal Santo S, Astegno A. Identification, characterization, and expression analysis of calmodulin and calmodulin-like genes in grapevine (Vitis vinifera) reveal likely roles in stress responses. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 129:221-237. [PMID: 29908490 DOI: 10.1016/j.plaphy.2018.06.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 05/09/2018] [Accepted: 06/02/2018] [Indexed: 05/23/2023]
Abstract
Calcium (Ca2+) is an ubiquitous key second messenger in plants, where it modulates many developmental and adaptive processes in response to various stimuli. Several proteins containing Ca2+ binding domain have been identified in plants, including calmodulin (CaM) and calmodulin-like (CML) proteins, which play critical roles in translating Ca2+ signals into proper cellular responses. In this work, a genome-wide analysis conducted in Vitis vinifera identified three CaM- and 62 CML-encoding genes. We assigned gene family nomenclature, analyzed gene structure, chromosomal location and gene duplication, as well as protein motif organization. The phylogenetic clustering revealed a total of eight subgroups, including one unique clade of VviCaMs distinct from VviCMLs. VviCaMs were found to contain four EF-hand motifs whereas VviCML proteins have one to five. Most of grapevine CML genes were intronless, while VviCaMs were intron rich. All the genes were well spread among the 19 grapevine chromosomes and displayed a high level of duplication. The expression profiling of VviCaM/VviCML genes revealed a broad expression pattern across all grape organs and tissues at various developmental stages, and a significant modulation in biotic stress-related responses. Our results highlight the complexity of CaM/CML protein family also in grapevine, supporting the versatile role of its different members in modulating cellular responses to various stimuli, in particular to biotic stresses. This work lays the foundation for further functional and structural studies on specific grapevine CaMs/CMLs in order to better understand the role of Ca2+-binding proteins in grapevine and to explore their potential for further biotechnological applications.
Collapse
Affiliation(s)
- Elodie Vandelle
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy.
| | - Alessandro Vannozzi
- Department of Agronomy, Food, Natural Resources, Animals, and Environment, University of Padova, 35020 Legnaro, Padova, Italy.
| | - Darren Wong
- Ecology and Evolution, Research School of Biology, The Australian National University, Acton ACT 2601, Australia.
| | - Davide Danzi
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy.
| | - Anne-Marie Digby
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy.
| | - Silvia Dal Santo
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy.
| | - Alessandra Astegno
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy.
| |
Collapse
|
29
|
Ilc T, Arista G, Tavares R, Navrot N, Duchêne E, Velt A, Choulet F, Paux E, Fischer M, Nelson DR, Hugueney P, Werck-Reichhart D, Rustenholz C. Annotation, classification, genomic organization and expression of the Vitis vinifera CYPome. PLoS One 2018; 13:e0199902. [PMID: 29953551 PMCID: PMC6023221 DOI: 10.1371/journal.pone.0199902] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 06/15/2018] [Indexed: 12/26/2022] Open
Abstract
Cytochromes P450 are enzymes that participate in a wide range of functions in plants, from hormonal signaling and biosynthesis of structural polymers, to defense or communication with other organisms. They represent one of the largest gene/protein families in the plant kingdom. The manual annotation of cytochrome P450 genes in the genome of Vitis vinifera PN40024 revealed 579 P450 sequences, including 279 complete genes. Most of the P450 sequences in grapevine genome are organized in physical clusters, resulting from tandem or segmental duplications. Although most of these clusters are small (2 to 35, median = 3), some P450 families, such as CYP76 and CYP82, underwent multiple duplications and form large clusters of homologous sequences. Analysis of gene expression revealed highly specific expression patterns, which are often the same within the genes in large physical clusters. Some of these genes are induced upon biotic stress, which points to their role in plant defense, whereas others are specifically activated during grape berry ripening and might be responsible for the production of berry-specific metabolites, such as aroma compounds. Our work provides an exhaustive and robust annotation including clear identification, structural organization, evolutionary dynamics and expression patterns for the grapevine cytochrome P450 families, paving the way to efficient functional characterization of genes involved in grapevine defense pathways and aroma biosynthesis.
Collapse
Affiliation(s)
- Tina Ilc
- Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, Université de Strasbourg, Strasbourg, France
| | - Gautier Arista
- Université de Strasbourg, INRA, SVQV UMR-A 1131, Colmar, France
| | - Raquel Tavares
- Laboratoire de Biométrie et Biologie Evolutive, Centre National de la Recherche Scientifique, Université de Lyon 1, Lyon, France
| | - Nicolas Navrot
- Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, Université de Strasbourg, Strasbourg, France
| | - Eric Duchêne
- Université de Strasbourg, INRA, SVQV UMR-A 1131, Colmar, France
| | - Amandine Velt
- Université de Strasbourg, INRA, SVQV UMR-A 1131, Colmar, France
| | - Frédéric Choulet
- Laboratoire Structure et Evolution du Génome du Blé, Institut National de la Recherche Agronomique, Université Blaise Pascal, Clermont-Ferrand, France
| | - Etienne Paux
- Laboratoire Structure et Evolution du Génome du Blé, Institut National de la Recherche Agronomique, Université Blaise Pascal, Clermont-Ferrand, France
| | - Marc Fischer
- Université de Strasbourg, INRA, SVQV UMR-A 1131, Colmar, France
| | - David R. Nelson
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, Tennessee, United States of America
| | | | - Danièle Werck-Reichhart
- Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, Université de Strasbourg, Strasbourg, France
| | - Camille Rustenholz
- Université de Strasbourg, INRA, SVQV UMR-A 1131, Colmar, France
- * E-mail:
| |
Collapse
|
30
|
Expression profile analysis of maize in response to Setosphaeria turcica. Gene 2018; 659:100-108. [DOI: 10.1016/j.gene.2018.03.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 02/27/2018] [Accepted: 03/12/2018] [Indexed: 01/04/2023]
|
31
|
Jogaiah S, Abdelrahman M, Tran LP, Ito S. Different mechanisms of Trichoderma virens-mediated resistance in tomato against Fusarium wilt involve the jasmonic and salicylic acid pathways. MOLECULAR PLANT PATHOLOGY 2018; 19:870-882. [PMID: 28605157 PMCID: PMC6638079 DOI: 10.1111/mpp.12571] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 06/01/2017] [Accepted: 06/08/2017] [Indexed: 05/08/2023]
Abstract
In the present study, we investigated the role of Trichoderma virens (TriV_JSB100) spores or cell-free culture filtrate in the regulation of growth and activation of the defence responses of tomato (Solanum lycopersicum) plants against Fusarium oxysporum f. sp. lycopersici by the development of a biocontrol-plant-pathogen interaction system. Two-week-old tomato seedlings primed with TriV_JSB100 spores cultured on barley grains (BGS) or with cell-free culture filtrate (CF) were inoculated with Fusarium pathogen under glasshouse conditions; this resulted in significantly lower disease incidence in tomato Oogata-Fukuju plants treated with BGS than in those treated with CF. To dissect the pathways associated with this response, jasmonic acid (JA) and salicylic acid (SA) signalling in BGS- and CF-induced resistance was evaluated using JA- and SA-impaired tomato lines. We observed that JA-deficient mutant def1 plants were susceptible to Fusarium pathogen when they were treated with BGS. However, wild-type (WT) BGS-treated tomato plants showed a higher JA level and significantly lower disease incidence. SA-deficient mutant NahG plants treated with CF were also found to be susceptible to Fusarium pathogen and displayed low SA levels, whereas WT CF-treated tomato plants exhibited moderately lower disease levels and substantially higher SA levels. Expression of the JA-responsive defensin gene PDF1 was induced in WT tomato plants treated with BGS, whereas the SA-inducible pathogenesis-related protein 1 acidic (PR1a) gene was up-regulated in WT tomato plants treated with CF. These results suggest that TriV_JSB100 BGS and CF differentially induce JA and SA signalling cascades for the elicitation of Fusarium oxysporum resistance in tomato.
Collapse
Affiliation(s)
- Sudisha Jogaiah
- Plant Healthcare and Diagnostic Center, PG Department of Studies in Biotechnology and MicrobiologyKarnatak UniversityPavate Nagar, Dharwad 580 003, KarnatakaIndia
| | - Mostafa Abdelrahman
- Graduate School of Life SciencesTohoku University2‐1‐1, Katahira, Aoba‐ku, Sendai 980‐8577Japan
- Botany Department, Faculty of ScienceAswan UniversityAswan 81528Egypt
| | - Lam‐Son Phan Tran
- Plant Abiotic Stress Research Group & Faculty of Applied SciencesTon Duc Thang UniversityHo Chi Minh City 70000Vietnam
- Signaling Pathway Research UnitRIKEN Center for Sustainable Resource Science1‐7‐22 Suehiro‐cho, Tsurmi‐ku, Yokohama 230‐0045Japan
| | - Shin‐Ichi Ito
- Laboratory of Molecular Plant Pathology, Department of Biological and Environmental Sciences, Faculty of AgricultureYamaguchi UniversityYamaguchi 753‐8515Japan
- Research Center for Thermotolerant Microbial Resources (RCTMR), Yamaguchi UniversityYamaguchi 753‐8515Japan
| |
Collapse
|
32
|
Wong DCJ, Ariani P, Castellarin S, Polverari A, Vandelle E. Co-expression network analysis and cis-regulatory element enrichment determine putative functions and regulatory mechanisms of grapevine ATL E3 ubiquitin ligases. Sci Rep 2018; 8:3151. [PMID: 29453355 PMCID: PMC5816651 DOI: 10.1038/s41598-018-21377-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 02/02/2018] [Indexed: 02/06/2023] Open
Abstract
Arabidopsis thaliana Toxicos en Levadura (ATL) proteins are a subclass of the RING-H2 zinc finger binding E3 ubiquitin ligases. The grapevine (Vitis vinifera) ATL family was recently characterized, revealing 96 members that are likely to be involved in several physiological processes through protein ubiquitination. However, the final targets and biological functions of most ATL E3 ligases are still unknown. We analyzed the co-expression networks among grapevine ATL genes across a set of transcriptomic data related to defense and abiotic stress, combined with a condition-independent dataset. This revealed strong correlations between ATL proteins and diverse signal transduction components and transcriptional regulators, in particular those involved in immunity. An enrichment analysis of cis-regulatory elements in ATL gene promoters and related co-expressed genes highlighted the importance of hormones in the regulation of ATL gene expression. Our work identified several ATL proteins as candidates for further studies aiming to decipher specific grapevine resistance mechanisms activated in response to pathogens.
Collapse
Affiliation(s)
- Darren C J Wong
- Wine Research Centre, University of British Columbia, 2205 East Mall, Vancouver, BC V6T 1Z4, Canada
- Ecology and Evolution, Research School of Biology, The Australian National University, Acton, ACT 2601, Australia
| | - Pietro Ariani
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Verona, 37134, Italy
| | - Simone Castellarin
- Wine Research Centre, University of British Columbia, 2205 East Mall, Vancouver, BC V6T 1Z4, Canada
| | - Annalisa Polverari
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Verona, 37134, Italy.
| | - Elodie Vandelle
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Verona, 37134, Italy.
| |
Collapse
|
33
|
Downy mildew symptoms on grapevines can be reduced by volatile organic compounds of resistant genotypes. Sci Rep 2018; 8:1618. [PMID: 29374187 PMCID: PMC5786018 DOI: 10.1038/s41598-018-19776-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 01/04/2018] [Indexed: 12/22/2022] Open
Abstract
Volatile organic compounds (VOCs) play a crucial role in the communication of plants with other organisms and are possible mediators of plant defence against phytopathogens. Although the role of non-volatile secondary metabolites has been largely characterised in resistant genotypes, the contribution of VOCs to grapevine defence mechanisms against downy mildew (caused by Plasmopara viticola) has not yet been investigated. In this study, more than 50 VOCs from grapevine leaves were annotated/identified by headspace-solid-phase microextraction gas chromatography-mass spectrometry analysis. Following P. viticola inoculation, the abundance of most of these VOCs was higher in resistant (BC4, Kober 5BB, SO4 and Solaris) than in susceptible (Pinot noir) genotypes. The post-inoculation mechanism included the accumulation of 2-ethylfuran, 2-phenylethanol, β-caryophyllene, β-cyclocitral, β-selinene and trans-2-pentenal, which all demonstrated inhibitory activities against downy mildew infections in water suspensions. Moreover, the development of downy mildew symptoms was reduced on leaf disks of susceptible grapevines exposed to air treated with 2-ethylfuran, 2-phenylethanol, β-cyclocitral or trans-2-pentenal, indicating the efficacy of these VOCs against P. viticola in receiver plant tissues. Our data suggest that VOCs contribute to the defence mechanisms of resistant grapevines and that they may inhibit the development of downy mildew symptoms on both emitting and receiving tissues.
Collapse
|
34
|
Nawrocka J, Małolepsza U, Szymczak K, Szczech M. Involvement of metabolic components, volatile compounds, PR proteins, and mechanical strengthening in multilayer protection of cucumber plants against Rhizoctonia solani activated by Trichoderma atroviride TRS25. PROTOPLASMA 2018; 255:359-373. [PMID: 28879466 PMCID: PMC5756291 DOI: 10.1007/s00709-017-1157-1] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 08/16/2017] [Indexed: 05/07/2023]
Abstract
In the present study, the spread of Rhizoctonia solani-induced disease was limited when cucumber plants were pretreated with Trichoderma atroviride TRS25. The systemic disease suppression was related to TRS25-induced resistance (TISR) induction with simultaneous plant growth promotion. Protection of cucumber was related to enhanced activity of defense enzymes, e.g., guaiacol peroxidase (GPX), syringaldazine peroxidase (SPX), phenylalanine ammonia lyase (PAL), and polyphenol oxidase (PPO) as well as phenolic (PC) concentration increases in the conditions of hydrogen peroxide (H2O2) accumulation, resulting in thiobarbituric acid reactive substance (TBARS) decrease. Moreover, the obtained results indicated that TISR might depend on accumulation of salicylic acid derivatives, that is methyl salicylate (MeSA), ethylhexyl salicylate (EHS), salicylic acid glucosylated conjugates (SAGC), and β-cyclocitral as well as volatile organic compounds (VOC) such as Z-3-hexanal, Z-3-hexenol, and E-2-hexenal. The results point to important, not previously documented, roles of these VOC in TISR signaling with up-regulation of PR1 and PR5 gene characteristic of systemic acquired resistance (SAR) and of PR4 gene, marker of induced systemic resistance (ISR). The study established that TRS25 enhanced deposition of callose and lignin in specialized plant cells, which protected vascular system in cucumber shoots and roots as well as assimilation cells and dermal tissues in shoots and leaves. These compounds protected cucumber organs against R. solani influence and made them more flexible and resilient, which contributed to better nutrition and hydration of plants. The growth promotion coupled with systemic mobilization of biochemical and mechanical strengthening might be involved in multilayer protection of cucumber against R. solani activated by TRS25.
Collapse
Affiliation(s)
- Justyna Nawrocka
- Department of Plant Physiology and Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237, Lodz, Poland.
| | - U Małolepsza
- Department of Plant Physiology and Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237, Lodz, Poland
| | - K Szymczak
- Institute of General Food Chemistry, Lodz University of Technology, Stefanowskiego 4/10, 90-237, Lodz, Poland
| | - M Szczech
- Research Institute of Horticulture, Konstytucji 3 Maja 1/3, 96-100, Skierniewice, Poland
| |
Collapse
|
35
|
Buonassisi D, Perazzolli M, Peressotti E, Tadiello A, Musetti R, Velasco R, Cantù D, Vezzulli S. Grapevine downy mildew dual epidemics: a leaf and inflorescence transcriptomics study. ACTA ACUST UNITED AC 2017. [DOI: 10.17660/actahortic.2017.1188.34] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
36
|
Ferreira Filho JA, Horta MAC, Beloti LL, Dos Santos CA, de Souza AP. Carbohydrate-active enzymes in Trichoderma harzianum: a bioinformatic analysis bioprospecting for key enzymes for the biofuels industry. BMC Genomics 2017; 18:779. [PMID: 29025413 PMCID: PMC5639747 DOI: 10.1186/s12864-017-4181-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Accepted: 10/05/2017] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Trichoderma harzianum is used in biotechnology applications due to its ability to produce powerful enzymes for the conversion of lignocellulosic substrates into soluble sugars. Active enzymes involved in carbohydrate metabolism are defined as carbohydrate-active enzymes (CAZymes), and the most abundant family in the CAZy database is the glycoside hydrolases. The enzymes of this family play a fundamental role in the decomposition of plant biomass. RESULTS In this study, the CAZymes of T. harzianum were identified and classified using bioinformatic approaches after which the expression profiles of all annotated CAZymes were assessed via RNA-Seq, and a phylogenetic analysis was performed. A total of 430 CAZymes (3.7% of the total proteins for this organism) were annotated in T. harzianum, including 259 glycoside hydrolases (GHs), 101 glycosyl transferases (GTs), 6 polysaccharide lyases (PLs), 22 carbohydrate esterases (CEs), 42 auxiliary activities (AAs) and 46 carbohydrate-binding modules (CBMs). Among the identified T. harzianum CAZymes, 47% were predicted to harbor a signal peptide sequence and were therefore classified as secreted proteins. The GH families were the CAZyme class with the greatest number of expressed genes, including GH18 (23 genes), GH3 (17 genes), GH16 (16 genes), GH2 (13 genes) and GH5 (12 genes). A phylogenetic analysis of the proteins in the AA9/GH61, CE5 and GH55 families showed high functional variation among the proteins. CONCLUSIONS Identifying the main proteins used by T. harzianum for biomass degradation can ensure new advances in the biofuel production field. Herein, we annotated and characterized the expression levels of all of the CAZymes from T. harzianum, which may contribute to future studies focusing on the functional and structural characterization of the identified proteins.
Collapse
Affiliation(s)
- Jaire Alves Ferreira Filho
- Center for Molecular Biology and Genetic Engineering (CBMEG), University of Campinas (UNICAMP), Campinas, SP, Brazil.,Graduate Program in Genetics and Molecular Biology, Institute of Biology, UNICAMP, Campinas, SP, Brazil
| | | | - Lilian Luzia Beloti
- Center for Molecular Biology and Genetic Engineering (CBMEG), University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Clelton Aparecido Dos Santos
- Center for Molecular Biology and Genetic Engineering (CBMEG), University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Anete Pereira de Souza
- Center for Molecular Biology and Genetic Engineering (CBMEG), University of Campinas (UNICAMP), Campinas, SP, Brazil. .,Department of Plant Biology, Institute of Biology, UNICAMP, Campinas, SP, Brazil.
| |
Collapse
|
37
|
Sharma V, Salwan R, Sharma PN, Gulati A. Integrated Translatome and Proteome: Approach for Accurate Portraying of Widespread Multifunctional Aspects of Trichoderma. Front Microbiol 2017; 8:1602. [PMID: 28900417 PMCID: PMC5581810 DOI: 10.3389/fmicb.2017.01602] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 08/07/2017] [Indexed: 12/31/2022] Open
Abstract
Genome-wide studies of transcripts expression help in systematic monitoring of genes and allow targeting of candidate genes for future research. In contrast to relatively stable genomic data, the expression of genes is dynamic and regulated both at time and space level at different level in. The variation in the rate of translation is specific for each protein. Both the inherent nature of an mRNA molecule to be translated and the external environmental stimuli can affect the efficiency of the translation process. In biocontrol agents (BCAs), the molecular response at translational level may represents noise-like response of absolute transcript level and an adaptive response to physiological and pathological situations representing subset of mRNAs population actively translated in a cell. The molecular responses of biocontrol are complex and involve multistage regulation of number of genes. The use of high-throughput techniques has led to rapid increase in volume of transcriptomics data of Trichoderma. In general, almost half of the variations of transcriptome and protein level are due to translational control. Thus, studies are required to integrate raw information from different “omics” approaches for accurate depiction of translational response of BCAs in interaction with plants and plant pathogens. The studies on translational status of only active mRNAs bridging with proteome data will help in accurate characterization of only a subset of mRNAs actively engaged in translation. This review highlights the associated bottlenecks and use of state-of-the-art procedures in addressing the gap to accelerate future accomplishment of biocontrol mechanisms.
Collapse
Affiliation(s)
- Vivek Sharma
- Department of Plant Pathology, Choudhary Sarwan Kumar Himachal Pradesh Agricultural UniversityPalampur, India
| | - Richa Salwan
- Department of Veterinary Microbiology, Choudhary Sarwan Kumar Himachal Pradesh Agricultural UniversityPalampur, India
| | - P N Sharma
- Department of Plant Pathology, Choudhary Sarwan Kumar Himachal Pradesh Agricultural UniversityPalampur, India
| | - Arvind Gulati
- Institute of Himalayan Bioresource TechnologyPalampur, India
| |
Collapse
|
38
|
Kashyap PL, Rai P, Srivastava AK, Kumar S. Trichoderma for climate resilient agriculture. World J Microbiol Biotechnol 2017; 33:155. [PMID: 28695465 DOI: 10.1007/s11274-017-2319-1] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 07/05/2017] [Indexed: 01/16/2023]
Abstract
Climate change is one of the biggest challenges of the twenty-first century for sustainable agricultural production. Several reports highlighted the need for better agricultural practices and use of eco-friendly methods for sustainable crop production under such situations. In this context, Trichoderma species could be a model fungus to sustain crop productivity. Currently, these are widely used as inoculants for biocontrol, biofertilization, and phytostimulation. They are reported to improve photosynthetic efficiency, enhance nutrient uptake and increase nitrogen use efficiency in crops. Moreover, they can be used to produce bio-energy, facilitate plants for adaptation and mitigate adverse effect of climate change. The technological advancement in high throughput DNA sequencing and biotechnology provided deep insight into the complex and diverse biotic interactions established in nature by Trichoderma spp. and efforts are being made to translate this knowledge to enhance crop growth, resistance to disease and tolerance to abiotic stresses under field conditions. The discovery of several traits and genes that are involved in the beneficial effects of Trichoderma spp. has resulted in better understanding of the performance of bioinoculants in the field, and will lead to more efficient use of these strains and possibly to their improvement by genetic modification. The present mini-review is an effort to elucidate the molecular basis of plant growth promotion and defence activation by Trichoderma spp. to garner broad perspectives regarding their functioning and applicability for climate resilient agriculture.
Collapse
Affiliation(s)
- Prem Lal Kashyap
- ICAR-Indian Institute of Wheat and Barley Research (IIWBR), Karnal, 132001, India. .,ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Mau, Uttar Pradesh, 275103, India.
| | - Pallavi Rai
- ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Mau, Uttar Pradesh, 275103, India
| | - Alok Kumar Srivastava
- ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Mau, Uttar Pradesh, 275103, India
| | - Sudheer Kumar
- ICAR-Indian Institute of Wheat and Barley Research (IIWBR), Karnal, 132001, India
| |
Collapse
|
39
|
Mestre P, Arista G, Piron M, Rustenholz C, Ritzenthaler C, Merdinoglu D, Chich J. Identification of a Vitis vinifera endo-β-1,3-glucanase with antimicrobial activity against Plasmopara viticola. MOLECULAR PLANT PATHOLOGY 2017; 18:708-719. [PMID: 27216084 PMCID: PMC6638254 DOI: 10.1111/mpp.12431] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Inducible plant defences against pathogens are stimulated by infections and comprise several classes of pathogenesis-related (PR) proteins. Endo-β-1,3-glucanases (EGases) belong to the PR-2 class and their expression is induced by many pathogenic fungi and oomycetes, suggesting that EGases play a role in the hydrolysis of pathogen cell walls. However, reports of a direct effect of EGases on cell walls of plant pathogens are scarce. Here, we characterized three EGases from Vitis vinifera whose expression is induced during infection by Plasmopara viticola, the causal agent of downy mildew. Recombinant proteins were expressed in Escherichia coli. The enzymatic characteristics of these three enzymes were measured in vitro and in planta. A functional assay performed in vitro on germinated P. viticola spores revealed a strong anti-P. viticola activity for EGase3, which strikingly was that with the lowest in vitro catalytic efficiency. To our knowledge, this work shows, for the first time, the direct effect against downy mildew of EGases of the PR-2 family from Vitis.
Collapse
Affiliation(s)
- Pere Mestre
- SVQV, INRA, Université de StrasbourgColmarF‐68000France
| | | | | | | | - Christophe Ritzenthaler
- Institut de Biologie Moléculaire des Plantes du CNRS, Université de Strasbourg12 rue du Général ZimmerStrasbourg67084France
| | | | | |
Collapse
|
40
|
Siddaiah CN, Satyanarayana NR, Mudili V, Kumar Gupta V, Gurunathan S, Rangappa S, Huntrike SS, Srivastava RK. Elicitation of resistance and associated defense responses in Trichoderma hamatum induced protection against pearl millet downy mildew pathogen. Sci Rep 2017; 7:43991. [PMID: 28322224 PMCID: PMC5359564 DOI: 10.1038/srep43991] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 01/23/2017] [Indexed: 01/01/2023] Open
Abstract
Endophytic Trichoderma hamatum UoM 13 isolated from pearl millet roots was evaluated for its efficiency to suppress downy mildew disease. Under laboratory conditions, T. hamatum seed treatment significantly enhanced pearl millet seed germination and seedling vigor. T. hamatum seed treatment resulted in systemic and durable immunity against pearl millet downy mildew disease under greenhouse and field conditions. T. hamatum treated seedlings responded to downy mildew infection with high lignification and callose deposition. Analysis of defense enzymes showed that T. hamatum treatment significantly enhanced the activities of glucanase, peroxidase, phenylalanine ammonia-lyase, and polyphenol oxidase in comparison to untreated control. RT-PCR analysis revealed differentially expressed transcripts of the defense enzymes and PR-proteins in treated, untreated, and checks, wherein PR-1, PR-5, and cell wall defense HRGPs were significantly over expressed in treated seedlings as against their lower expression in controls. T. hamatum treatment significantly stimulated endogenous salicylic acid (SA) levels and significantly upregulated important SA biosynthesis gene isochorismate synthase. The results indicated that T. hamatum UoM13 treatment induces resistance corresponding to significant over expression of endogenous SA, important defense enzymes, PR-proteins, and HRGPs, suggesting that SA biosynthetic pathway is involved in pearl millet for mounting systemic immunity against downy mildew pathogen.
Collapse
Affiliation(s)
- Chandra Nayaka Siddaiah
- Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysore, 570006, Karnataka, India
| | - Niranjan Raj Satyanarayana
- Department of Studies in Microbiology, Karnataka State Open University, Mukthagangotri, Mysore, 570006, Karnataka, India
| | - Venkataramana Mudili
- Microbiology Division, DRDO-BU-Centre for Life sciences, Bharathiar University Campus, Coimbatore, 641046, Tamil Nadu, India
| | - Vijai Kumar Gupta
- Discipline of Biochemistry, National University of Ireland Galway, Galway, Ireland
| | - Selvakumar Gurunathan
- Microbiology Division, DRDO-BU-Centre for Life sciences, Bharathiar University Campus, Coimbatore, 641046, Tamil Nadu, India
| | - Shobith Rangappa
- Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, Sapporo 060-0808, Japan
| | - Shekar Shetty Huntrike
- Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysore, 570006, Karnataka, India
| | - Rakesh Kumar Srivastava
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, 502324, Telangana, India
| |
Collapse
|
41
|
Ariani P, Regaiolo A, Lovato A, Giorgetti A, Porceddu A, Camiolo S, Wong D, Castellarin S, Vandelle E, Polverari A. Genome-wide characterisation and expression profile of the grapevine ATL ubiquitin ligase family reveal biotic and abiotic stress-responsive and development-related members. Sci Rep 2016; 6:38260. [PMID: 27910910 PMCID: PMC5133618 DOI: 10.1038/srep38260] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 11/08/2016] [Indexed: 01/09/2023] Open
Abstract
The Arabidopsis Tóxicos en Levadura (ATL) protein family is a class of E3 ubiquitin ligases with a characteristic RING-H2 Zn-finger structure that mediates diverse physiological processes and stress responses in plants. We carried out a genome-wide survey of grapevine (Vitis vinifera L.) ATL genes and retrieved 96 sequences containing the canonical ATL RING-H2 domain. We analysed their genomic organisation, gene structure and evolution, protein domains and phylogenetic relationships. Clustering revealed several clades, as already reported in Arabidopsis thaliana and rice (Oryza sativa), with an expanded subgroup of grapevine-specific genes. Most of the grapevine ATL genes lacked introns and were scattered among the 19 chromosomes, with a high level of duplication retention. Expression profiling revealed that some ATL genes are expressed specifically during early or late development and may participate in the juvenile to mature plant transition, whereas others may play a role in pathogen and/or abiotic stress responses, making them key candidates for further functional analysis. Our data offer the first genome-wide overview and annotation of the grapevine ATL family, and provide a basis for investigating the roles of specific family members in grapevine physiology and stress responses, as well as potential biotechnological applications.
Collapse
Affiliation(s)
- Pietro Ariani
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Strada Le Grazie 15, Verona, 37134, Italy
| | - Alice Regaiolo
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Strada Le Grazie 15, Verona, 37134, Italy
| | - Arianna Lovato
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Strada Le Grazie 15, Verona, 37134, Italy
| | - Alejandro Giorgetti
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Strada Le Grazie 15, Verona, 37134, Italy
| | - Andrea Porceddu
- Università degli Studi di Sassari, Dipartimento di Agraria, SACEG, Via Enrico De Nicola 1, Sassari, 07100, Italy
| | - Salvatore Camiolo
- Università degli Studi di Sassari, Dipartimento di Agraria, SACEG, Via Enrico De Nicola 1, Sassari, 07100, Italy
| | - Darren Wong
- Wine Research Centre, University of British Columbia, 326-2205 East Mall, Vancouver, BC V6T 1Z4, Canada
| | - Simone Castellarin
- Wine Research Centre, University of British Columbia, 326-2205 East Mall, Vancouver, BC V6T 1Z4, Canada
| | - Elodie Vandelle
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Strada Le Grazie 15, Verona, 37134, Italy
| | - Annalisa Polverari
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Strada Le Grazie 15, Verona, 37134, Italy
| |
Collapse
|
42
|
Bruisson S, Maillot P, Schellenbaum P, Walter B, Gindro K, Deglène-Benbrahim L. Arbuscular mycorrhizal symbiosis stimulates key genes of the phenylpropanoid biosynthesis and stilbenoid production in grapevine leaves in response to downy mildew and grey mould infection. PHYTOCHEMISTRY 2016; 131:92-99. [PMID: 27623505 DOI: 10.1016/j.phytochem.2016.09.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 07/22/2016] [Accepted: 09/01/2016] [Indexed: 05/08/2023]
Abstract
Grapevine (Vitis spp) is susceptible to serious fungal diseases usually controlled by chemical treatments. Arbuscular mycorrhizal fungi (AMF) are obligate plant symbionts which can stimulate plant defences. We investigated the effect of mycorrhization on grapevine stilbenoid defences. Vitis vinifera cvs Chasselas, Pinot noir and the interspecific hybrid Divico, on the rootstock 41B, were mycorrhized with Rhizophagus irregularis before leaf infection by Plasmopara viticola or Botrytis cinerea. Gene expression analysis showed an up-regulation of PAL, STS, and ROMT, involved in the stilbenoid biosynthesis pathway, in plant leaves, 48 h after pathogen inoculation. This defense response could be potentiated under AMF colonization, with an intensity level depending on the gene, the plant cultivar and/or the pathogen. We also showed that higher amounts of active forms of stilbenoids (i.e trans-form of resveratrol, ε- and δ-viniferins and pterostilbene) were produced in mycorrhized plants of the three genotypes in comparison with non-mycorrhized ones, 10 days post-inoculation with either pathogen. These results support the hypothesis that AMF root colonization enhances defence reactions against a biotrophic and a necrotrophic pathogen, in the aerial parts of grapevine.
Collapse
Affiliation(s)
- Sébastien Bruisson
- Laboratoire Vigne, Biotechnologies & Environnement, Université de Haute Alsace, 33 rue de Herrlisheim, F-68008 Colmar Cedex, France
| | - Pascale Maillot
- Laboratoire Vigne, Biotechnologies & Environnement, Université de Haute Alsace, 33 rue de Herrlisheim, F-68008 Colmar Cedex, France
| | - Paul Schellenbaum
- Laboratoire Vigne, Biotechnologies & Environnement, Université de Haute Alsace, 33 rue de Herrlisheim, F-68008 Colmar Cedex, France
| | - Bernard Walter
- Laboratoire Vigne, Biotechnologies & Environnement, Université de Haute Alsace, 33 rue de Herrlisheim, F-68008 Colmar Cedex, France
| | - Katia Gindro
- Agroscope, Institute for Plant Production Sciences IPS, Mycology and Biotechnology, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Laurence Deglène-Benbrahim
- Laboratoire Vigne, Biotechnologies & Environnement, Université de Haute Alsace, 33 rue de Herrlisheim, F-68008 Colmar Cedex, France.
| |
Collapse
|
43
|
Perazzolli M, Herrero N, Sterck L, Lenzi L, Pellegrini A, Puopolo G, Van de Peer Y, Pertot I. Transcriptomic responses of a simplified soil microcosm to a plant pathogen and its biocontrol agent reveal a complex reaction to harsh habitat. BMC Genomics 2016; 17:838. [PMID: 27784266 PMCID: PMC5081961 DOI: 10.1186/s12864-016-3174-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 10/18/2016] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Soil microorganisms are key determinants of soil fertility and plant health. Soil phytopathogenic fungi are one of the most important causes of crop losses worldwide. Microbial biocontrol agents have been extensively studied as alternatives for controlling phytopathogenic soil microorganisms, but molecular interactions between them have mainly been characterised in dual cultures, without taking into account the soil microbial community. We used an RNA sequencing approach to elucidate the molecular interplay of a soil microbial community in response to a plant pathogen and its biocontrol agent, in order to examine the molecular patterns activated by the microorganisms. RESULTS A simplified soil microcosm containing 11 soil microorganisms was incubated with a plant root pathogen (Armillaria mellea) and its biocontrol agent (Trichoderma atroviride) for 24 h under controlled conditions. More than 46 million paired-end reads were obtained for each replicate and 28,309 differentially expressed genes were identified in total. Pathway analysis revealed complex adaptations of soil microorganisms to the harsh conditions of the soil matrix and to reciprocal microbial competition/cooperation relationships. Both the phytopathogen and its biocontrol agent were specifically recognised by the simplified soil microcosm: defence reaction mechanisms and neutral adaptation processes were activated in response to competitive (T. atroviride) or non-competitive (A. mellea) microorganisms, respectively. Moreover, activation of resistance mechanisms dominated in the simplified soil microcosm in the presence of both A. mellea and T. atroviride. Biocontrol processes of T. atroviride were already activated during incubation in the simplified soil microcosm, possibly to occupy niches in a competitive ecosystem, and they were not further enhanced by the introduction of A. mellea. CONCLUSIONS This work represents an additional step towards understanding molecular interactions between plant pathogens and biocontrol agents within a soil ecosystem. Global transcriptional analysis of the simplified soil microcosm revealed complex metabolic adaptation in the soil environment and specific responses to antagonistic or neutral intruders.
Collapse
Affiliation(s)
- Michele Perazzolli
- Department of Sustainable Ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38010 S, Michele all'Adige, Italy.
| | - Noemí Herrero
- Department of Sustainable Ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38010 S, Michele all'Adige, Italy
- Present Address: Institute of Entomology, Biology Centre-The Czech Academy of Sciences, Branišovská 31/1160, České Budějovice, 37005, Czech Republic
| | - Lieven Sterck
- Department of Plant Systems Biology, VIB, 9052, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052, Ghent, Belgium
- Bioinformatics Institute Ghent, Ghent University, 9000, Ghent, Belgium
| | - Luisa Lenzi
- Department of Sustainable Ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38010 S, Michele all'Adige, Italy
| | - Alberto Pellegrini
- Department of Sustainable Ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38010 S, Michele all'Adige, Italy
| | - Gerardo Puopolo
- Department of Sustainable Ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38010 S, Michele all'Adige, Italy
| | - Yves Van de Peer
- Department of Plant Systems Biology, VIB, 9052, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052, Ghent, Belgium
- Bioinformatics Institute Ghent, Ghent University, 9000, Ghent, Belgium
- Department of Genetics, Genomics Research Institute, University of Pretoria, Hatfield Campus, 0028, Pretoria, South Africa
| | - Ilaria Pertot
- Department of Sustainable Ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38010 S, Michele all'Adige, Italy
| |
Collapse
|
44
|
Niederhuth CE, Bewick AJ, Ji L, Alabady MS, Kim KD, Li Q, Rohr NA, Rambani A, Burke JM, Udall JA, Egesi C, Schmutz J, Grimwood J, Jackson SA, Springer NM, Schmitz RJ. Widespread natural variation of DNA methylation within angiosperms. Genome Biol 2016; 17:194. [PMID: 27671052 DOI: 10.1101/045880] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 09/09/2016] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND DNA methylation is an important feature of plant epigenomes, involved in the formation of heterochromatin and affecting gene expression. Extensive variation of DNA methylation patterns within a species has been uncovered from studies of natural variation. However, the extent to which DNA methylation varies between flowering plant species is still unclear. To understand the variation in genomic patterning of DNA methylation across flowering plant species, we compared single base resolution DNA methylomes of 34 diverse angiosperm species. RESULTS By analyzing whole-genome bisulfite sequencing data in a phylogenetic context, it becomes clear that there is extensive variation throughout angiosperms in gene body DNA methylation, euchromatic silencing of transposons and repeats, as well as silencing of heterochromatic transposons. The Brassicaceae have reduced CHG methylation levels and also reduced or loss of CG gene body methylation. The Poaceae are characterized by a lack or reduction of heterochromatic CHH methylation and enrichment of CHH methylation in genic regions. Furthermore, low levels of CHH methylation are observed in a number of species, especially in clonally propagated species. CONCLUSIONS These results reveal the extent of variation in DNA methylation in angiosperms and show that DNA methylation patterns are broadly a reflection of the evolutionary and life histories of plant species.
Collapse
Affiliation(s)
- Chad E Niederhuth
- Department of Genetics, University of Georgia, 120 East Green Street, Athens, GA, 30602, USA
| | - Adam J Bewick
- Department of Genetics, University of Georgia, 120 East Green Street, Athens, GA, 30602, USA
| | - Lexiang Ji
- Institute of Bioinformatics, University of Georgia, Athens, GA, 30602, USA
| | - Magdy S Alabady
- Department of Plant Biology, University of Georgia, Athens, GA, 30602, USA
| | - Kyung Do Kim
- Center for Applied Genetic Technologies, University of Georgia, Athens, GA, 30602, USA
| | - Qing Li
- Department of Plant Biology, Microbial and Plant Genomics Institute, University of Minnesota, Saint Paul, MN, 55108, USA
| | - Nicholas A Rohr
- Department of Genetics, University of Georgia, 120 East Green Street, Athens, GA, 30602, USA
| | - Aditi Rambani
- Plant and Wildlife Science Department, Brigham Young University, Provo, UT, 84602, USA
| | - John M Burke
- Department of Plant Biology, University of Georgia, Athens, GA, 30602, USA
| | - Joshua A Udall
- Department of Plant Biology, Microbial and Plant Genomics Institute, University of Minnesota, Saint Paul, MN, 55108, USA
| | - Chiedozie Egesi
- National Root Crops Research Institute (NRCRI), Umudike, Km 8 Ikot Ekpene Road, PMB 7006, Umuahia, 440001, Nigeria
| | - Jeremy Schmutz
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, 35806, USA
- Department of Energy Joint Genome Institute, Walnut Creek, CA, USA
| | - Jane Grimwood
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, 35806, USA
| | - Scott A Jackson
- Center for Applied Genetic Technologies, University of Georgia, Athens, GA, 30602, USA
| | - Nathan M Springer
- Plant and Wildlife Science Department, Brigham Young University, Provo, UT, 84602, USA
| | - Robert J Schmitz
- Department of Genetics, University of Georgia, 120 East Green Street, Athens, GA, 30602, USA.
| |
Collapse
|
45
|
Niederhuth CE, Bewick AJ, Ji L, Alabady MS, Kim KD, Li Q, Rohr NA, Rambani A, Burke JM, Udall JA, Egesi C, Schmutz J, Grimwood J, Jackson SA, Springer NM, Schmitz RJ. Widespread natural variation of DNA methylation within angiosperms. Genome Biol 2016; 17:194. [PMID: 27671052 PMCID: PMC5037628 DOI: 10.1186/s13059-016-1059-0] [Citation(s) in RCA: 313] [Impact Index Per Article: 39.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 09/09/2016] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND DNA methylation is an important feature of plant epigenomes, involved in the formation of heterochromatin and affecting gene expression. Extensive variation of DNA methylation patterns within a species has been uncovered from studies of natural variation. However, the extent to which DNA methylation varies between flowering plant species is still unclear. To understand the variation in genomic patterning of DNA methylation across flowering plant species, we compared single base resolution DNA methylomes of 34 diverse angiosperm species. RESULTS By analyzing whole-genome bisulfite sequencing data in a phylogenetic context, it becomes clear that there is extensive variation throughout angiosperms in gene body DNA methylation, euchromatic silencing of transposons and repeats, as well as silencing of heterochromatic transposons. The Brassicaceae have reduced CHG methylation levels and also reduced or loss of CG gene body methylation. The Poaceae are characterized by a lack or reduction of heterochromatic CHH methylation and enrichment of CHH methylation in genic regions. Furthermore, low levels of CHH methylation are observed in a number of species, especially in clonally propagated species. CONCLUSIONS These results reveal the extent of variation in DNA methylation in angiosperms and show that DNA methylation patterns are broadly a reflection of the evolutionary and life histories of plant species.
Collapse
Affiliation(s)
- Chad E Niederhuth
- Department of Genetics, University of Georgia, 120 East Green Street, Athens, GA, 30602, USA
| | - Adam J Bewick
- Department of Genetics, University of Georgia, 120 East Green Street, Athens, GA, 30602, USA
| | - Lexiang Ji
- Institute of Bioinformatics, University of Georgia, Athens, GA, 30602, USA
| | - Magdy S Alabady
- Department of Plant Biology, University of Georgia, Athens, GA, 30602, USA
| | - Kyung Do Kim
- Center for Applied Genetic Technologies, University of Georgia, Athens, GA, 30602, USA
| | - Qing Li
- Department of Plant Biology, Microbial and Plant Genomics Institute, University of Minnesota, Saint Paul, MN, 55108, USA
| | - Nicholas A Rohr
- Department of Genetics, University of Georgia, 120 East Green Street, Athens, GA, 30602, USA
| | - Aditi Rambani
- Plant and Wildlife Science Department, Brigham Young University, Provo, UT, 84602, USA
| | - John M Burke
- Department of Plant Biology, University of Georgia, Athens, GA, 30602, USA
| | - Joshua A Udall
- Department of Plant Biology, Microbial and Plant Genomics Institute, University of Minnesota, Saint Paul, MN, 55108, USA
| | - Chiedozie Egesi
- National Root Crops Research Institute (NRCRI), Umudike, Km 8 Ikot Ekpene Road, PMB 7006, Umuahia, 440001, Nigeria
| | - Jeremy Schmutz
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, 35806, USA
- Department of Energy Joint Genome Institute, Walnut Creek, CA, USA
| | - Jane Grimwood
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, 35806, USA
| | - Scott A Jackson
- Center for Applied Genetic Technologies, University of Georgia, Athens, GA, 30602, USA
| | - Nathan M Springer
- Plant and Wildlife Science Department, Brigham Young University, Provo, UT, 84602, USA
| | - Robert J Schmitz
- Department of Genetics, University of Georgia, 120 East Green Street, Athens, GA, 30602, USA.
| |
Collapse
|
46
|
Kulkarni KS, Zala HN, Bosamia TC, Shukla YM, Kumar S, Fougat RS, Patel MS, Narayanan S, Joshi CG. De novo Transcriptome Sequencing to Dissect Candidate Genes Associated with Pearl Millet-Downy Mildew (Sclerospora graminicola Sacc.) Interaction. FRONTIERS IN PLANT SCIENCE 2016; 7:847. [PMID: 27446100 PMCID: PMC4916200 DOI: 10.3389/fpls.2016.00847] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 05/30/2016] [Indexed: 05/21/2023]
Abstract
Understanding the plant-pathogen interactions is of utmost importance to design strategies for minimizing the economic deficits caused by pathogens in crops. With an aim to identify genes underlying resistance to downy mildew, a major disease responsible for productivity loss in pearl millet, transcriptome analysis was performed in downy mildew resistant and susceptible genotypes upon infection and control on 454 Roche NGS platform. A total of ~685 Mb data was obtained with 1 575 290 raw reads. The raw reads were pre-processed into high-quality (HQ) reads making to ~82% with an average of 427 bases. The assembly was optimized using four assemblers viz. Newbler, MIRA, CLC and Trinity, out of which MIRA with a total of 14.10 Mb and 90118 transcripts proved to be the best for assembling reads. Differential expression analysis depicted 1396 and 936 and 1000 and 1591 transcripts up and down regulated in resistant inoculated/resistant control and susceptible inoculated/susceptible control respectively with a common of 3644 transcripts. The pathways for secondary metabolism, specifically the phenylpropanoid pathway was up-regulated in resistant genotype. Transcripts up-regulated as a part of defense response included classes of R genes, PR proteins, HR induced proteins and plant hormonal signaling transduction proteins. The transcripts for skp1 protein, purothionin, V type proton ATPase were found to have the highest expression in resistant genotype. Ten transcripts, selected on the basis of their involvement in defense mechanism were validated with qRT-PCR and showed positive co-relation with transcriptome data. Transcriptome analysis evoked potentials of hypersensitive response and systemic acquired resistance as possible mechanism operating in defense mechanism in pearl millet against downy mildew infection.
Collapse
Affiliation(s)
- Kalyani S. Kulkarni
- Department of Agricultural Biotechnology, Anand Agricultural UniversityAnand, India
- Department of Biotechnology, ICAR-Indian Institute of Rice ResearchHyderabad, India
| | - Harshvardhan N. Zala
- Department of Agricultural Biotechnology, Anand Agricultural UniversityAnand, India
| | - Tejas C. Bosamia
- Department of Biotechnology, Junagadh Agriculture UniversityJunagadh, India
| | - Yogesh M. Shukla
- Department of Biochemistry, Anand Agricultural UniversityAnand, India
| | - Sushil Kumar
- Department of Agricultural Biotechnology, Anand Agricultural UniversityAnand, India
| | - Ranbir S. Fougat
- Department of Agricultural Biotechnology, Anand Agricultural UniversityAnand, India
| | - Mruduka S. Patel
- Department of Agricultural Biotechnology, Anand Agricultural UniversityAnand, India
| | | | - Chaitanya G. Joshi
- Department of Animal Biotechnology, Anand Agricultural UniversityAnand, India
| |
Collapse
|
47
|
Perazzolli M, Palmieri MC, Matafora V, Bachi A, Pertot I. Phosphoproteomic analysis of induced resistance reveals activation of signal transduction processes by beneficial and pathogenic interaction in grapevine. JOURNAL OF PLANT PHYSIOLOGY 2016; 195:59-72. [PMID: 27010348 DOI: 10.1016/j.jplph.2016.03.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 03/11/2016] [Accepted: 03/11/2016] [Indexed: 06/05/2023]
Abstract
Protein phosphorylation regulates several key processes of the plant immune system. Protein kinases and phosphatases are pivotal regulators of defense mechanisms elicited by resistance inducers. However, the phosphorylation cascades that trigger the induced resistance mechanisms in plants have not yet been deeply investigated. The beneficial fungus Trichoderma harzianum T39 (T39) induces resistance against grapevine downy mildew (Plasmopara viticola), but its efficacy could be further improved by a better understanding of the cellular regulations involved. We investigated quantitative changes in the grapevine phosphoproteome during T39-induced resistance to get an overview of regulatory mechanisms of downy mildew resistance. Immunodetection experiments revealed activation of the 45 and 49kDa kinases by T39 treatment both before and after pathogen inoculation, and the phosphoproteomic analysis identified 103 phosphopeptides that were significantly affected by the phosphorylation cascades during T39-induced resistance. Peptides affected by T39 treatment showed comparable phosphorylation levels after P. viticola inoculation, indicating activation of the microbial recognition machinery before pathogen infection. Phosphorylation profiles of proteins related to photosynthetic processes and protein ubiquitination indicated a partial overlap of cellular responses in T39-treated and control plants. However, phosphorylation changes of proteins involved in response to stimuli, signal transduction, hormone signaling, gene expression regulation, and RNA metabolism were exclusively elicited by P. viticola inoculation in T39-treated plants. These results highlighted the relevance of phosphorylation changes during T39-induced resistance and identified key regulator candidates of the grapevine defense against downy mildew.
Collapse
Affiliation(s)
- Michele Perazzolli
- Department of Sustainable Agro-ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund Mach (FEM), Via E. Mach 1, 38010 San Michele all'Adige, Italy.
| | - Maria Cristina Palmieri
- Department of Sustainable Agro-ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund Mach (FEM), Via E. Mach 1, 38010 San Michele all'Adige, Italy
| | - Vittoria Matafora
- Biological Mass Spectrometry Unit DIBIT, San Raffaele Scientific Institute, Via Olgettina 58, 20132 Milano, Italy
| | - Angela Bachi
- Biological Mass Spectrometry Unit DIBIT, San Raffaele Scientific Institute, Via Olgettina 58, 20132 Milano, Italy
| | - Ilaria Pertot
- Department of Sustainable Agro-ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund Mach (FEM), Via E. Mach 1, 38010 San Michele all'Adige, Italy
| |
Collapse
|
48
|
De Palma M, D'Agostino N, Proietti S, Bertini L, Lorito M, Ruocco M, Caruso C, Chiusano ML, Tucci M. Suppression Subtractive Hybridization analysis provides new insights into the tomato (Solanum lycopersicum L.) response to the plant probiotic microorganism Trichoderma longibrachiatum MK1. JOURNAL OF PLANT PHYSIOLOGY 2016; 190:79-94. [PMID: 26705844 DOI: 10.1016/j.jplph.2015.11.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 11/03/2015] [Accepted: 11/06/2015] [Indexed: 05/20/2023]
Abstract
Trichoderma species include widespread rhizosphere-colonising fungi that may establish an opportunistic interaction with the plant, resulting in growth promotion and/or increased tolerance to biotic and abiotic stresses. For this reason, Trichoderma-based formulations are largely used in agriculture to improve yield while reducing the application of agro-chemicals. By using the Suppression Subtractive Hybridization method, we identified molecular mechanisms activated during the in vitro interaction between tomato (Solanum lycopersicum L.) and the selected strain MK1 of Trichoderma longibrachiatum, and which may participate in the stimulation of plant growth and systemic resistance. Screening and sequence analysis of the subtractive library resulted in forty unique transcripts. Their annotation in functional categories revealed enrichment in cell defence/stress and primary metabolism categories, while secondary metabolism and transport were less represented. Increased transcription of genes involved in defence, cell wall reinforcement and signalling of reactive oxygen species suggests that improved plant pathogen resistance induced by T. longibrachiatum MK1 in tomato may occur through stimulation of the above mechanisms. The array of activated defence-related genes indicates that different signalling pathways, beside the jasmonate/ethylene-dependent one, collaborate to fine-tune the plant response. Our results also suggest that the growth stimulation effect of MK1 on tomato may involve a set of genes controlling protein synthesis and turnover as well as energy metabolism and photosynthesis. Transcriptional profiling of several defence-related genes at different time points of the tomato-Trichoderma interaction, and after subsequent inoculation with the pathogen Botrytis cinerea, provided novel information on genes that may specifically modulate the tomato response to T. longibrachiatum, B. cinerea or both.
Collapse
Affiliation(s)
- Monica De Palma
- CNR, Institute of Biosciences and BioResources (IBBR), Research Division Portici, Via Università 133, 80055 Portici, NA, Italy
| | - Nunzio D'Agostino
- Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Centro di ricerca per l'orticoltura, Via Cavalleggeri 25, 84098 Pontecagnano (SA), Italy
| | - Silvia Proietti
- Department of Ecological and Biological Sciences, University of Tuscia, Via S. Camillo De Lellis, 01100 Viterbo, Italy; Plant-Microbe Interactions, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Laura Bertini
- Department of Ecological and Biological Sciences, University of Tuscia, Via S. Camillo De Lellis, 01100 Viterbo, Italy
| | - Matteo Lorito
- Department of Agricultural Sciences, University of Naples Federico II, via Università 100, 80055 Portici (NA), Italy
| | - Michelina Ruocco
- CNR, Institute for Sustainable Plant Protection (IPSP), Via Università 133, 80055 Portici (NA), Italy
| | - Carla Caruso
- Department of Ecological and Biological Sciences, University of Tuscia, Via S. Camillo De Lellis, 01100 Viterbo, Italy
| | - Maria L Chiusano
- Department of Agricultural Sciences, University of Naples Federico II, via Università 100, 80055 Portici (NA), Italy
| | - Marina Tucci
- CNR, Institute of Biosciences and BioResources (IBBR), Research Division Portici, Via Università 133, 80055 Portici, NA, Italy.
| |
Collapse
|
49
|
Cappelletti M, Perazzolli M, Antonielli L, Nesler A, Torboli E, Bianchedi PL, Pindo M, Puopolo G, Pertot I. Leaf Treatments with a Protein-Based Resistance Inducer Partially Modify Phyllosphere Microbial Communities of Grapevine. FRONTIERS IN PLANT SCIENCE 2016; 7:1053. [PMID: 27486468 PMCID: PMC4949236 DOI: 10.3389/fpls.2016.01053] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 07/05/2016] [Indexed: 05/20/2023]
Abstract
Protein derivatives and carbohydrates can stimulate plant growth, increase stress tolerance, and activate plant defense mechanisms. However, these molecules can also act as a nutritional substrate for microbial communities living on the plant phyllosphere and possibly affect their biocontrol activity against pathogens. We investigated the mechanisms of action of a protein derivative (nutrient broth, NB) against grapevine downy mildew, specifically focusing on the effects of foliar treatments on plant defense stimulation and on the composition and biocontrol features of the phyllosphere microbial populations. NB reduced downy mildew symptoms and induced the expression of defense-related genes in greenhouse- and in vitro-grown plants, indicating the activation of grapevine resistance mechanisms. Furthermore, NB increased the number of culturable phyllosphere bacteria and altered the composition of bacterial and fungal populations on leaves of greenhouse-grown plants. Although, NB-induced changes on microbial populations were affected by the structure of indigenous communities originally residing on grapevine leaves, degrees of disease reduction and defense gene modulation were consistent among the experiments. Thus, modifications in the structure of phyllosphere populations caused by NB application could partially contribute to downy mildew control by competition for space or other biocontrol strategies. Particularly, changes in the abundance of phyllosphere microorganisms may provide a contribution to resistance induction, partially affecting the hormone-mediated signaling pathways involved. Modifying phyllosphere populations by increasing natural biocontrol agents with the application of selected nutritional factors can open new opportunities in terms of sustainable plant protection strategies.
Collapse
Affiliation(s)
- Martina Cappelletti
- Department of Sustainable Ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund MachSan Michele all'Adige, Italy
- Department of Agricultural and Environmental Sciences, University of UdineUdine, Italy
| | - Michele Perazzolli
- Department of Sustainable Ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund MachSan Michele all'Adige, Italy
- *Correspondence: Michele Perazzolli
| | - Livio Antonielli
- Bioresources Unit, Department of Health and Environment, Austrian Institute of TechnologyTulln and der Donau, Austria
| | - Andrea Nesler
- Department of Sustainable Ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund MachSan Michele all'Adige, Italy
| | - Esmeralda Torboli
- Department of Sustainable Ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund MachSan Michele all'Adige, Italy
| | - Pier L. Bianchedi
- Technology Transfer Center, Fondazione Edmund MachSan Michele all'Adige, Italy
| | - Massimo Pindo
- Department of Sustainable Ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund MachSan Michele all'Adige, Italy
| | - Gerardo Puopolo
- Department of Sustainable Ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund MachSan Michele all'Adige, Italy
| | - Ilaria Pertot
- Department of Sustainable Ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund MachSan Michele all'Adige, Italy
| |
Collapse
|
50
|
Lenzi L, Caruso C, Bianchedi PL, Pertot I, Perazzolli M. Laser Microdissection of Grapevine Leaves Reveals Site-Specific Regulation of Transcriptional Response to Plasmopara viticola. PLANT & CELL PHYSIOLOGY 2016; 57:69-81. [PMID: 26546320 DOI: 10.1093/pcp/pcv166] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 10/23/2015] [Indexed: 06/05/2023]
Abstract
Grapevine is one of the most important fruit crops in the world, and it is highly susceptible to downy mildew caused by the biotrophic oomycete Plasmopara viticola. Gene expression profiling has been used extensively to investigate the regulation processes of grapevine-P. viticola interaction, but all studies to date have involved the use of whole leaves. However, only a small fraction of host cells is in contact with the pathogen, so highly localized transcriptional changes of infected cells may be masked by the large portion of non-infected cells when analyzing the whole leaf. In order to understand the transcriptional regulation of the plant reaction at the sites of pathogen infection, we optimized a laser microdissection protocol and analyzed the transcriptional changes in stomata cells and surrounding areas of grapevine leaves at early stages of P. viticola infection. The results indicate that the expression levels of seven P. viticola-responsive genes were greater in microdissected cells than in whole leaves, highlighting the site-specific transcriptional regulation of the host response. The gene modulation was restricted to the stomata cells and to the surrounding areas of infected tissues, indicating that the host response is mainly located at the infection sites and that short-distance signals are implicated. In addition, due to the high sensitivity of the laser microdissection technique, significant modulations of three genes that were completely masked in the whole tissue analysis were detected. The protocol validated in this study could greatly increase the sensitivity of further transcriptomic studies of the grapevine-P. viticola interaction.
Collapse
Affiliation(s)
- Luisa Lenzi
- Research and Innovation Center, Fondazione Edmund Mach (FEM), Via E. Mach, 1, 38010 S. Michele all'Adige, Italy Department of Ecological and Biological Sciences, University of Tuscia, Via San Camillo de Lellis, 01100 Viterbo, Italy
| | - Carla Caruso
- Department of Ecological and Biological Sciences, University of Tuscia, Via San Camillo de Lellis, 01100 Viterbo, Italy
| | - Pier Luigi Bianchedi
- Technology Transfer Center, Fondazione Edmund Mach (FEM), Via E. Mach, 1, 38010 S. Michele all'Adige, Italy
| | - Ilaria Pertot
- Research and Innovation Center, Fondazione Edmund Mach (FEM), Via E. Mach, 1, 38010 S. Michele all'Adige, Italy
| | - Michele Perazzolli
- Research and Innovation Center, Fondazione Edmund Mach (FEM), Via E. Mach, 1, 38010 S. Michele all'Adige, Italy
| |
Collapse
|