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Díaz-Fernández Á, Loureiro MD, Pereira-Lorenzo S, Ibáñez J, Díaz-Losada E. Screening of Galician grapevine varieties by SNPs, phenotypic traits, and phytopathology. Front Plant Sci 2024; 15:1359506. [PMID: 38434439 PMCID: PMC10904527 DOI: 10.3389/fpls.2024.1359506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 01/24/2024] [Indexed: 03/05/2024]
Abstract
The genetic erosion of the European grapevine diversity in the last century has promoted the conservation of varieties in germplasm banks to prevent their disappearance. The study of these varieties is necessary as it would allow the diversification of the wine market, as well as provide a source of genes to face new pathogens or climate constraints. In this work, the grapevine varieties preserved in the "Estación de Viticultura e Enoloxía de Galicia" (EVEGA) Germplasm Bank (Ourense, Spain) were widely characterized, combining ampelography, ampelometry, agronomy, and phytopathology. Moreover, genetic characterization was carried out through the analysis of 48 single-nucleotide polymorphisms (SNPs). A Bayesian analysis based on the SNP data was carried out to define the genetic structure of the EVEGA Germplasm Bank, which allowed the differentiation of two main reconstructed panmictic populations (RPPs), confirming previous results obtained based on microsatellite markers (SSRs). A great diversity between varieties was found for almost every parameter evaluated for ampelography, ampelometry, phytopatology, phenology, and berry quality. A principal component analysis (PCA) performed with these phenotypical data allowed discrimination among some groups of varieties included in different genetic populations. This study allowed us to evaluate the grapevine diversity maintained in the EVEGA Germplasm Bank and characterize varieties of potential value for breeding programs of interest for the Galician viticulture.
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Affiliation(s)
- Ángela Díaz-Fernández
- Department of Viticulture, Estación de Viticultura e Enoloxía de Galicia (EVEGA)‐Axencia Galega da Calidade Alimentaria (AGACAL), Leiro, Ourense, Spain
| | - M. Dolores Loureiro
- Department of Viticulture, Estación de Viticultura e Enoloxía de Galicia (EVEGA)‐Axencia Galega da Calidade Alimentaria (AGACAL), Leiro, Ourense, Spain
| | - Santiago Pereira-Lorenzo
- Department of Crop Production and Engineering Projects, Santiago de Compostela University (USC), Lugo, Spain
| | - Javier Ibáñez
- Department of Viticulture, Instituto de Ciencias de la Vid y del Vino (ICVV), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de la Rioja (UR), Gobierno de la Rioja, Logroño, Spain
| | - Emilia Díaz-Losada
- Department of Viticulture, Estación de Viticultura e Enoloxía de Galicia (EVEGA)‐Axencia Galega da Calidade Alimentaria (AGACAL), Leiro, Ourense, Spain
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Peng J, Wang X, Wang H, Li X, Zhang Q, Wang M, Yan J. Advances in understanding grapevine downy mildew: From pathogen infection to disease management. Mol Plant Pathol 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] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Accepted: 09/29/2023] [Indexed: 11/23/2023]
Abstract
Plasmopara viticola is geographically widespread in grapevine-growing regions. Grapevine downy mildew disease, caused by this biotrophic pathogen, leads to considerable yield losses in viticulture annually. Because of the great significance of grapevine production and wine quality, research on this disease has been widely performed since its emergence in the 19th century. Here, we review and discuss recent understanding of this pathogen from multiple aspects, including its infection cycle, disease symptoms, genome decoding, effector biology, and management and control strategies. We highlight the identification and characterization of effector proteins with their biological roles in host-pathogen interaction, with a focus on sustainable control methods against P. viticola, especially the use of biocontrol agents and environmentally friendly compounds.
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Affiliation(s)
- Junbo Peng
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Xuncheng Wang
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Hui Wang
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Xinghong Li
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Qi Zhang
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Meng Wang
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Jiye Yan
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
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Ge X, Hetzer B, Tisch C, Kortekamp A, Nick P. Surface wax in the ancestral grapevine Vitis sylvestris correlate with partial resistance to Powdery Mildew. BMC Plant Biol 2023; 23:304. [PMID: 37286974 DOI: 10.1186/s12870-023-04311-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 05/23/2023] [Indexed: 06/09/2023]
Abstract
BACKGROUND Powdery Mildew of Grapevine belongs to the major diseases in viticulture and requires intensive use of fungicides. Genetic introgression of resistance factors from wild grapes from North America and, recently, China, has been successful, but wine made from those varieties is still confronted with low consumer acceptance, due to differences in taste. RESULTS The current work explores the potential of Vitis vinifera sylvestris, the wild ancestor of domesticated Grapevine, with respect to containing Erysiphe necator, the causative agent of Powdery Mildew. Making use of a germplasm collection comprising the entire genetic variability remaining in Germany, we show that there is considerable genetic variation in the formation of leaf surface waxes exceeding wax formation in commercial varieties. CONCLUSIONS High wax formation correlates with reduced susceptibility to controlled infection with E. necator linked with perturbations of appressoria formation. We propose V. vinifera sylvestris as novel source for resistance breeding since it is genetically much closer to domesticated grapevine than the hitherto used sources from beyond the species barrier.
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Affiliation(s)
- Xinshuang Ge
- Molecular Cell Biology, Botanical Institute, Karlsruhe Institute of Technology, Fritz-Haber-Weg, 76131, Karlsruhe, Karlsruhe, Germany
| | - Birgit Hetzer
- Max Rubner-Institut (MRI) - Federal Research Institute of Nutrition and Food, Karlsruhe, Germany
| | - Christine Tisch
- DLR Rheinpfalz State Education and Research Center of Viticulture and Horticulture and Rural Development, Neustadt an der Weinstraße, Germany
| | - Andreas Kortekamp
- DLR Rheinpfalz State Education and Research Center of Viticulture and Horticulture and Rural Development, Neustadt an der Weinstraße, Germany
| | - Peter Nick
- Molecular Cell Biology, Botanical Institute, Karlsruhe Institute of Technology, Fritz-Haber-Weg, 76131, Karlsruhe, Karlsruhe, Germany.
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Wicaksono WA, Morauf C, Müller H, Abdelfattah A, Donat C, Berg G. The mature phyllosphere microbiome of grapevine is associated with resistance against Plasmopara viticola. Front Microbiol 2023; 14:1149307. [PMID: 37113228 PMCID: PMC10127535 DOI: 10.3389/fmicb.2023.1149307] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 03/15/2023] [Indexed: 04/29/2023] Open
Abstract
Phyllosphere microbiota represents a substantial but hardly explored reservoir for disease resistance mechanisms. The goal of our study was to understand the link between grapevine cultivars susceptibility to Plasmopara viticola, one of the most devastating leaf pathogens in viticulture, and the phyllosphere microbiota. Therefore, we analyzed a 16S rRNA gene library for the dominant phyllosphere bacterial phyla Alphaproteobacteria of seven Vitis genotypes at different developmental stages, i.e., flowering and harvesting, via amplicon sequencing. Young leaves had significantly higher Alphaproteobacterial richness and diversity without significant host-specificity. In contrast, the microbial communities of mature leaves were structurally distinct in accordance with P. viticola resistance levels. This statistically significant link between mature bacterial phyllosphere communities and resistant phenotypes was corroborated by beta diversity metrics and network analysis. Beyond direct host-driven effects via the provision of microhabitats, we found evidence that plants recruit for specific bacterial taxa that were likely playing a fundamental role in mediating microbe-microbe interactions and structuring clusters within mature communities. Our results on grape-microbiota interaction provide insights for targeted biocontrol and breeding strategies.
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Affiliation(s)
- Wisnu Adi Wicaksono
- Institute of Environmental Biotechnology, Graz University of Technology, Graz, Austria
- *Correspondence: Wisnu Adi Wicaksono,
| | | | - Henry Müller
- Institute of Environmental Biotechnology, Graz University of Technology, Graz, Austria
- Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany
| | - Ahmed Abdelfattah
- Institute of Environmental Biotechnology, Graz University of Technology, Graz, Austria
- Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany
| | | | - Gabriele Berg
- Institute of Environmental Biotechnology, Graz University of Technology, Graz, Austria
- Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany
- Institute for Biochemistry and Biology, University of Potsdam, Potsdam, Germany
- Austrian Centre of Industrial Biotechnology (ACIB GmbH), Graz, Austria
- Gabriele Berg,
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Oerke EC, Juraschek L, Steiner U. Hyperspectral mapping of the response of grapevine cultivars to Plasmopara viticola infection at the tissue scale. J Exp Bot 2023; 74:377-395. [PMID: 36173350 DOI: 10.1093/jxb/erac390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
Resistance of grapevine to Plasmopara viticola is associated with the hypersensitive reaction, accumulation of stilbenoids, and formation of callose depositions. Spectral characterization of infected leaf tissue of cvs 'Regent' and 'Solaris' with resistance genes Rpv 3-1 and Rpv 10 and Rpv 3-3, respectively, suggested that resistance is not dependent on large-scale necrotization of host tissue. Reactions of the resistant cultivars and a reference susceptible to P. viticola were studied using hyperspectral imaging (range 400-1000 nm) at the tissue level and microscopic techniques. Resistance of both cultivars was incomplete and allowed pathogen reproduction. Spectral vegetation indices characterized the host response to pathogen invasion; the vitality of infected and necrotic leaf tissue differed significantly. Resistance depended on local accumulation of polyphenols in response to haustorium formation and was more effective for cv. 'Solaris'. Although hypersensitive reaction of some cells prevented colonization of palisade parenchyma, resistance was not associated with extensive necrotization of tissue, and the biotrophic pathogen survived localized death of penetrated host cells. Hyperspectral imaging was suitable to characterize and differentiate the resistance reactions of grapevine cultivars by mapping of the cellular response to pathogen attack on the tissue level and yields useful information on host-pathogen interactions.
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Affiliation(s)
- Erich-Christian Oerke
- Rheinische Friedrich-Wilhelms-Universitaet Bonn, INRES - Plant Pathology, Nussallee 9, D-53115 Bonn, Germany
| | - Lena Juraschek
- Rheinische Friedrich-Wilhelms-Universitaet Bonn, INRES - Plant Pathology, Nussallee 9, D-53115 Bonn, Germany
| | - Ulrike Steiner
- Rheinische Friedrich-Wilhelms-Universitaet Bonn, INRES - Plant Pathology, Nussallee 9, D-53115 Bonn, Germany
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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. Front Plant Sci 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] [What about the content of this article? (0)] [Affiliation(s)] [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.
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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
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7
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Fournier P, Pellan L, Barroso-Bergadà D, Bohan DA, Candresse T, Delmotte F, Dufour MC, Lauvergeat V, Le Marrec C, Marais A, Martins G, Masneuf-Pomarède I, Rey P, Sherman D, This P, Frioux C, Labarthe S, Vacher C. The functional microbiome of grapevine throughout plant evolutionary history and lifetime. ADV ECOL RES 2022. [DOI: 10.1016/bs.aecr.2022.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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8
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Štambuk P, Šikuten I, Preiner D, Nimac A, Lazarević B, Marković Z, Maletić E, Kontić JK, Tomaz I. Screening of Croatian Native Grapevine Varieties for Susceptibility to Plasmopara viticola Using Leaf Disc Bioassay, Chlorophyll Fluorescence, and Multispectral Imaging. Plants (Basel) 2021; 10:plants10040661. [PMID: 33808401 PMCID: PMC8067117 DOI: 10.3390/plants10040661] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/17/2021] [Accepted: 03/25/2021] [Indexed: 12/31/2022]
Abstract
In the era of sustainable grapevine production, there is a growing demand to define differences between Vitis vinifera varieties in susceptibility to downy mildew. Croatia, as a country with a long tradition of grapevine cultivation, preserves a large number of native grapevine varieties. A leaf disc bioassay has been conducted on 25 of them to define their response to downy mildew, according to the International Organisation of Vine and Wine (OIV) descriptor 452-1, together with the stress response of the leaf discs using chlorophyll fluorescence and multispectral imaging with 11 parameters included. Time points of measurement were as follows: before treatment (T0), one day post-inoculation (dpi) (T1), two dpi (T2), three dpi (T3), four dpi (T4), six dpi (T5), and eight dpi (T6). Visible changes in form of developed Plasmopara viticola (P. viticola) sporulation were evaluated on the seventh day upon inoculation. Results show that methods applied here distinguish varieties of different responses to downy mildew. Based on the results obtained, a phenotyping model in the absence of the pathogen is proposed, which is required to confirm by conducting more extensive research.
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Affiliation(s)
- Petra Štambuk
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (P.Š.); (I.Š.); (Z.M.); (E.M.); (J.K.K.); (I.T.)
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (A.N.); (B.L.)
| | - Iva Šikuten
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (P.Š.); (I.Š.); (Z.M.); (E.M.); (J.K.K.); (I.T.)
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (A.N.); (B.L.)
| | - Darko Preiner
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (P.Š.); (I.Š.); (Z.M.); (E.M.); (J.K.K.); (I.T.)
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (A.N.); (B.L.)
- Correspondence:
| | - Ana Nimac
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (A.N.); (B.L.)
- Department of Seed Science and Technology, Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia
| | - Boris Lazarević
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (A.N.); (B.L.)
- Department of Plant Nutrition, Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia
| | - Zvjezdana Marković
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (P.Š.); (I.Š.); (Z.M.); (E.M.); (J.K.K.); (I.T.)
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (A.N.); (B.L.)
| | - Edi Maletić
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (P.Š.); (I.Š.); (Z.M.); (E.M.); (J.K.K.); (I.T.)
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (A.N.); (B.L.)
| | - Jasminka Karoglan Kontić
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (P.Š.); (I.Š.); (Z.M.); (E.M.); (J.K.K.); (I.T.)
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (A.N.); (B.L.)
| | - Ivana Tomaz
- Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (P.Š.); (I.Š.); (Z.M.); (E.M.); (J.K.K.); (I.T.)
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Svetošimunska cesta 25, 10000 Zagreb, Croatia; (A.N.); (B.L.)
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Li MY, Jiao YT, Wang YT, Zhang N, Wang BB, Liu RQ, Yin X, Xu Y, Liu GT. CRISPR/Cas9-mediated VvPR4b editing decreases downy mildew resistance in grapevine ( Vitis vinifera L.). Hortic Res 2020; 7:149. [PMID: 32922821 PMCID: PMC7458914 DOI: 10.1038/s41438-020-00371-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/18/2020] [Accepted: 06/23/2020] [Indexed: 05/04/2023]
Abstract
Downy mildew of grapevine (Vitis vinifera L.), caused by the oomycete pathogen Plasmopara viticola, is one of the most serious concerns for grape production worldwide. It has been widely reported that the pathogenesis-related 4 (PR4) protein plays important roles in plant resistance to diseases. However, little is known about the role of PR4 in the defense of grapevine against P. viticola. In this study, we engineered loss-of-function mutations in the VvPR4b gene from the cultivar "Thompson Seedless" using the CRISPR/Cas9 system and evaluated the consequences for downy mildew resistance. Sequencing results showed that deletions were the main type of mutation introduced and that no off-target events occurred. Infection assays using leaf discs showed that, compared to wild-type plants, the VvPR4b knockout lines had increased susceptibility to P. viticola. This was accompanied by reduced accumulation of reactive oxygen species around stomata. Measurement of the relative genomic abundance of P. viticola in VvPR4b knockout lines also demonstrated that the mutants had increased susceptibility to the pathogen. Our results confirm that VvPR4b plays an active role in the defense of grapevine against downy mildew.
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Affiliation(s)
- Meng-Yuan Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100 China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100 China
| | - Yun-Tong Jiao
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100 China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100 China
| | - Yu-Ting Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100 China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100 China
| | - Na Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100 China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100 China
| | - Bian-Bian Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100 China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100 China
| | - Rui-Qi Liu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100 China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100 China
| | - Xiao Yin
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100 China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100 China
| | - Yan Xu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100 China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100 China
| | - Guo-Tian Liu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100 China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100 China
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10
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Toffolatti SL, De Lorenzis G, Brilli M, Moser M, Shariati V, Tavakol E, Maddalena G, Passera A, Casati P, Pindo M, Cestaro A, Maghradze D, Failla O, Bianco PA, Quaglino F. Novel Aspects on The Interaction Between Grapevine and Plasmopara viticola: Dual-RNA-Seq Analysis Highlights Gene Expression Dynamics in The Pathogen and The Plant During The Battle For Infection. Genes (Basel) 2020; 11:E261. [PMID: 32121150 DOI: 10.3390/genes11030261] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 02/25/2020] [Accepted: 02/26/2020] [Indexed: 12/11/2022] Open
Abstract
Mgaloblishvili, a Vitis vinifera cultivar, exhibits unique resistance traits against Plasmopara viticola, the downy mildew agent. This offers the unique opportunity of exploring the molecular responses in compatible and incompatible plant-pathogen interaction. In this study, whole transcriptomes of Mgaloblishvili, Pinot noir (a V. vinifera susceptible cultivar), and Bianca (a resistant hybrid) leaves, inoculated and non-inoculated with the pathogen, were used to identify P. viticola effector-encoding genes and plant susceptibility/resistance genes. Multiple effector-encoding genes were identified in P. viticola transcriptome, with remarkable expression differences in relation to the inoculated grapevine cultivar. Intriguingly, five apoplastic effectors specifically associated with resistance in V. vinifera. Gene coexpression network analysis identified specific modules and metabolic changes occurring during infection in the three grapevine cultivars. Analysis of these data allowed, for the first time, the detection in V. vinifera of a putative P. viticola susceptibility gene, encoding a LOB domain-containing protein. Finally, the de novo assembly of Mgaloblishvili, Pinot noir, and Bianca transcriptomes and their comparison highlighted novel candidate genes that might be at the basis of the resistant phenotype. These results open the way to functional analysis studies and to new perspectives in molecular breeding of grapevine for resistance to P. viticola.
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11
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Kim HC, Kim KH, Song K, Kim JY, Lee BM. Identification and Validation of Candidate Genes Conferring Resistance to Downy Mildew in Maize ( Zea mays L.). Genes (Basel) 2020; 11:E191. [PMID: 32053973 PMCID: PMC7074223 DOI: 10.3390/genes11020191] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 02/05/2020] [Accepted: 02/05/2020] [Indexed: 11/16/2022] Open
Abstract
Downy mildew (DM) is a major disease of maize that causes significant yield loss in subtropical and tropical regions around the world. A variety of DM strains have been reported, and the resistance to them is polygenically controlled. In this study, we analyzed the quantitative trait loci (QTLs) involved in resistance to Peronosclerospora sorghi (sorghum DM), P. maydis (Java DM), and Sclerophthora macrospora (crazy top DM) using a recombinant inbred line (RIL) from a cross between B73 (susceptible) and Ki11 (resistant), and the candidate genes for P. sorghi, P. maydis, and S. macrospora resistance were discovered. The linkage map was constructed with 234 simple sequence repeat (SSR) and restriction fragment length polymorphism (RFLP) markers, which was identified seven QTLs (chromosomes 2, 3, 6, and 9) for three DM strains. The major QTL, located on chromosome 2, consists of 12.95% of phenotypic variation explained (PVE) and a logarithm of odds (LOD) score of 14.12. Sixty-two candidate genes for P. sorghi, P. maydis, and S. macrospora resistance were obtained between the flanked markers in the QTL regions. The relative expression level of candidate genes was evaluated by quantitative real-time polymerase chain reaction (qRT-PCR) using resistant (CML228, Ki3, and Ki11) and susceptible (B73 and CML270) genotypes. For the 62 candidate genes, 15 genes were upregulated in resistant genotypes. Among these, three (GRMZM2G028643, GRMZM2G128315, and GRMZM2G330907) and AC210003.2_FG004 were annotated as leucine-rich repeat (LRR) and peroxidase (POX) genes, respectively. These candidate genes in the QTL regions provide valuable information for further studies related to P. sorghi, P. maydis, and S. macrospora resistance.
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Affiliation(s)
- Hyo Chul Kim
- Department of Life Science, Dongguk University-Seoul, Seoul 04620, Korea; (H.C.K.); (K.-H.K.); (K.S.)
| | - Kyung-Hee Kim
- Department of Life Science, Dongguk University-Seoul, Seoul 04620, Korea; (H.C.K.); (K.-H.K.); (K.S.)
| | - Kitae Song
- Department of Life Science, Dongguk University-Seoul, Seoul 04620, Korea; (H.C.K.); (K.-H.K.); (K.S.)
| | - Jae Yoon Kim
- Department of Plant Resources, College of Industrial Science, Kongju National University, Yesan 32439, Korea;
| | - Byung-Moo Lee
- Department of Life Science, Dongguk University-Seoul, Seoul 04620, Korea; (H.C.K.); (K.-H.K.); (K.S.)
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12
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Bove F, Rossi V. Components of partial resistance to Plasmopara viticola enable complete phenotypic characterization of grapevine varieties. Sci Rep 2020; 10:585. [PMID: 31953499 PMCID: PMC6969139 DOI: 10.1038/s41598-020-57482-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 12/30/2019] [Indexed: 11/30/2022] Open
Abstract
Six components of partial resistance (RCs) were studied in 15 grapevine varieties with partial resistance to Plasmopara viticola: (i) infection frequency (IFR, proportion of inoculation sites showing sporulation), (ii) latent period (LP50, degree-days between inoculation and appearance of 50% of the final number of sporulating lesions), (iii) lesion size (LS, area of single lesions in mm2), (iv) production of sporangia (SPOR, number of sporangia produced per lesion, and SPOR’, number of sporangia produced per mm2 of lesion), (v) infectious period (IP, number of sporulation events on a lesion), and (vi) infectivity of sporangia (INF, infection efficiency of sporangia produced on resistant varieties). Artificial inoculation monocycle experiments were conducted for a 3-year period on leaves collected at leaf development, flowering, and fruit development. Compared to the susceptible variety ‘Merlot’, the partially resistant varieties showed reduced IFR, longer LP, smaller LS, fewer SPOR and SPOR’, shorter IP, and lower INF. At leaf development, IFR, SPOR, and INF were higher and LP was shorter than at flowering and fruit development. RCs analysis through monocyclic experiments provides reliable assessments of the resistance response of grapevine accessions. The workload required for routine assessment in breeding programs could be reduced by measuring IFR and SPOR, while producing robust results.
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Affiliation(s)
- Federica Bove
- Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122, Piacenza, Italy
| | - Vittorio Rossi
- Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122, Piacenza, Italy.
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13
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Sargolzaei M, Maddalena G, Bitsadze N, Maghradze D, Bianco PA, Failla O, Toffolatti SL, De Lorenzis G. Rpv29, Rpv30 and Rpv31: Three Novel Genomic Loci Associated With Resistance to Plasmopara viticola in Vitis vinifera. Front Plant Sci 2020; 11:562432. [PMID: 33163011 PMCID: PMC7583455 DOI: 10.3389/fpls.2020.562432] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 09/17/2020] [Indexed: 05/21/2023]
Abstract
Plasmopara viticola (Berk. et Curt.) Berl. and de Toni, the agent of downy mildew, is one of the most important pathogens of European grapevine (Vitis vinifera L.). Extensive evaluation of cultivated grapevine germplasm has highlighted the existence of resistant phenotypes in the Georgian (Southern Caucasus) germplasm. Resistance is shown as a reduction in disease severity. Unraveling the genetic architecture of grapevine response to P. viticola infection is crucial to develop resistant varieties and reduce the impact of disease management. The aim of this work was to apply a genome-wide association (GWA) approach to a panel of Georgian-derived accessions phenotyped for P. viticola susceptibility and genotyped with Vitis18kSNP chip array. GWA identified three highly significant novel loci on chromosomes 14 (Rpv29), 3 (Rpv30) and 16 (Rpv31) associated with a low level of pathogen sporulation. Rpv29, Rpv30, and Rpv31 loci appeared to be associated with plant defense genes against biotic stresses, such as genes involved in pathogen recognition and signal transduction. This study provides the first evidence of resistant loci against P. viticola in V. vinifera germplasm, and identifies potential target genes for breeding P. viticola resistant grapevine cultivars.
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Affiliation(s)
- Maryam Sargolzaei
- Department of Agricultural and Environmental Sciences, University of Milan, Milan, Italy
| | - Giuliana Maddalena
- Department of Agricultural and Environmental Sciences, University of Milan, Milan, Italy
| | - Nana Bitsadze
- Department of Agriculture and Life Sciences, Agricultural University of Georgia, Tbilisi, Georgia
| | - David Maghradze
- Faculty of Viticulture and Winemaking, Caucasus International University, Tbilisi, Georgia
- National Wine Agency of Georgia, Tbilisi, Georgia
| | - Piero Attilio Bianco
- Department of Agricultural and Environmental Sciences, University of Milan, Milan, Italy
| | - Osvaldo Failla
- Department of Agricultural and Environmental Sciences, University of Milan, Milan, Italy
| | - Silvia Laura Toffolatti
- Department of Agricultural and Environmental Sciences, University of Milan, Milan, Italy
- *Correspondence: Gabriella De Lorenzis,
| | - Gabriella De Lorenzis
- Department of Agricultural and Environmental Sciences, University of Milan, Milan, Italy
- Silvia Laura Toffolatti,
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14
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Liu R, Weng K, Dou M, Chen T, Yin X, Li Z, Li T, Zhang C, Xiang G, Liu G, Xu Y. Transcriptomic analysis of Chinese wild Vitis pseudoreticulata in response to Plasmopara viticola. Protoplasma 2019; 256:1409-1424. [PMID: 31115695 DOI: 10.1007/s00709-019-01387-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 04/24/2019] [Indexed: 05/04/2023]
Abstract
Downy mildew, resulted from Plasmopara viticola, is one of most severe fungal diseases of grapevine. Since Vitis vinifera is susceptible to downy mildew, much effort has been focused on improving the resistance of V. vinifera. The Chinese wild V. pseudoreticulata accession Baihe-35-1 (BH) shows resistance to P. viticola; however, the molecular mechanism underlying its resistance to P. viticola is largely unknown. In order to better understand the cellular processes, the transcriptomic changes were investigated at 0, 12, 24, 48, 96, and 120 h post infection (hpi). Transcriptome analysis identified a total of 175 differentially expressed genes. Most of them were found to be associated with oxidative stress, cell wall modification, and protein modification. Moreover, the BH resistance to P. viticola was involved in metabolism process, including terpene synthesis and hormone synthesis. In addition, we verified 12 genes to ensure the accuracy of transcriptome data using quantitative real-time PCR (qRT-PCR). This study broadly characterizes a molecular mechanism in which oxidative stress and cell wall biosynthesis and modification play important roles in the response of BH to P. viticola and provides a basis for further analysis of key genes involved in the resistance to P. viticola.
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Affiliation(s)
- Ruiqi Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Kai Weng
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Mengru Dou
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Tingting Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Xiao Yin
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Zhiqian Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Tiemei Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Chen Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Gaoqing Xiang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Guotian Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Yan Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi, People's Republic of China.
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China.
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China.
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15
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Fröbel S, Zyprian E. Colonization of Different Grapevine Tissues by Plasmopara viticola-A Histological Study. Front Plant Sci 2019; 10:951. [PMID: 31396252 PMCID: PMC6667660 DOI: 10.3389/fpls.2019.00951] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 07/08/2019] [Indexed: 05/21/2023]
Abstract
Plasmopara viticola, the downy mildew pathogen, is one of the most important pathogens in European viticulture. This oomycete infects grapevine leaves via zoospores that encyst at stomata. A primary germ tube then enters the substomatal cavity and develops a tubular network of hyphae that proliferate intercellularly and parasitize the leaf mesophyll cells by haustoria. Leaf infections have thus been the primary object of multiple studies concerning the physiology of the pathogen and defense reactions of grapevines. Besides leaves, this oomycete pathogen is able to spread throughout the plant tissue. As shown here by microscopy, it colonizes leaf petioles, shoots, berries and seeds. Evidence is provided showing that this process is facilitated by formation of special fan-shaped hyphae that seem to be necessary to overcome physical barriers in plant tissues. Physical obstacles are mainly constituted by vascular tissue in leaf veins, leaf petioles and shoots. In grapevine shoots, the mycelium seems to extend along the cambial layer between xylem and phloem tissue. Infected young berries are completely colonized on the inside. Older infected "leather berries" show glossy appositions of the fan-shaped hyphae at the inner side of the berry skin. The seeds from that stage of infestation are devoid of endosperm and embryo and biologically dysfunctional. Furthermore, a classification system for P. viticola infection based on the degree of infections in petioles and shoot tips is presented. This study contributes to a better understanding of downy mildew pathogenesis in grapevine, a prerequisite for efficient control measures.
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Affiliation(s)
| | - Eva Zyprian
- Julius Kühn-Institut, Institute for Grapevine Breeding Geilweilerhof, Siebeldingen, Germany
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16
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Battiston E, Antonielli L, Di Marco S, Fontaine F, Mugnai L. Innovative Delivery of Cu(II) Ions by a Nanostructured Hydroxyapatite: Potential Application in Planta to Enhance the Sustainable Control of Plasmopara viticola. Phytopathology 2019; 109:748-759. [PMID: 30522386 DOI: 10.1094/phyto-02-18-0033-r] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Downy mildew caused by Plasmopara viticola is probably the most serious disease affecting grapevine (Vitis vinifera), and it is capable of causing consistent yield losses. In organic viticulture, the only acceptable and effective means to control the disease is by applications of copper-based fungicides. However, the use of copper in agriculture is expected to be further restricted by European countries because of its critical ecotoxicological and phytotoxicological profile. Research on ways to reduce the effective amounts of copper by developing innovative formulations as well as optimization of the distribution and persistence of copper-based pesticides for downy mildew control seems to be a promising approach. This research investigated the delivery properties of biomimetic synthetic hydroxyapatite (HA) to enhance the biological activity of Cu(II) ions. To this aim, four Cu(II) compounds were formulated with the innovative HA component and applied in an in vitro antifungal assay against Botrytis cinerea, a common grapevine pathogen suitable for in vitro activity tests, and finally, in in planta efficacy assays against P. viticola under greenhouse conditions. The in vitro results highlighted a different inhibition activity for each Cu(II) compound and indicated a different interaction between the cupric compounds and HA, potentially related to different delivery mechanisms of Cu(II) from HA. Under greenhouse conditions, additional findings on the biological activity of the applied formulations were gained, especially on the efficacy of various concentrations of HA in the formulations, the influence of dose variation of the formulation and the treatment efficiency, and the persistence under rain-washing effect. This study revealed promising findings on the formulation based on the HA particles and the soluble Cu(II) compound, which resulted in reduced disease severity and incidence in all of the experimental conditions, including the lower Cu(II) dosage and the rain-washing effect. This suggests that coformulation of the three insoluble Cu(II) compounds with HA might significantly enhance the adsorption and release of Cu(II) ions by HA particles.
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Affiliation(s)
- Enrico Battiston
- 1 Dipartimento di Scienze e Tecnologie Agrarie, Alimentari, Ambientali e Forestali, Sezione Patologia Vegetale ed Entomologia, Università degli Studi di Firenze, Firenze I-50144, Italy
- 2 Structure Fédératrice de Recherche Condorcet FR CNRS 3417, Université de Reims Champagne-Ardenne, Unité Recherche EA 4707, Résistance Induite et Bioprotection des Plantes, Reims F-51687, France
| | - Livio Antonielli
- 3 Health & Environment Department, Bioresources Unit, Austrian Institute of Technology GmbH, Tulln A-3430, Austria; and
| | - Stefano Di Marco
- 4 Istituto di Biometeorologia, Consiglio Nazionale delle Ricerche, Bologna I-40129, Italy
| | - Florence Fontaine
- 2 Structure Fédératrice de Recherche Condorcet FR CNRS 3417, Université de Reims Champagne-Ardenne, Unité Recherche EA 4707, Résistance Induite et Bioprotection des Plantes, Reims F-51687, France
| | - Laura Mugnai
- 1 Dipartimento di Scienze e Tecnologie Agrarie, Alimentari, Ambientali e Forestali, Sezione Patologia Vegetale ed Entomologia, Università degli Studi di Firenze, Firenze I-50144, Italy
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17
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Sapkota S, Chen LL, Yang S, Hyma KE, Cadle-Davidson L, Hwang CF. Construction of a high-density linkage map and QTL detection of downy mildew resistance in Vitis aestivalis-derived 'Norton'. Theor Appl Genet 2019; 132:137-147. [PMID: 30341491 DOI: 10.1007/s00122-018-3203-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Accepted: 10/06/2018] [Indexed: 05/08/2023]
Abstract
A major QTL for downy mildew resistance was detected on chromosome 18 (Rpv27) in Vitis aestivalis-derived 'Norton' based on a high-resolution linkage map with SNP and SSR markers as well as 2 years of field and laboratory phenotyping data. Grapevine downy mildew caused by the oomycete Plasmopara viticola is one of the most widespread and destructive diseases, particularly in humid viticultural areas where it damages green tissues and defoliates vines. Traditional Vitis vinifera wine grape cultivars are susceptible to downy mildew whereas several North American and a few Asian cultivars possess various levels of resistance to this disease. To identify genetic determinants of downy mildew resistance in V. aestivalis-derived 'Norton,' a mapping population with 182 genotypes was developed from a cross between 'Norton' and V. vinifera 'Cabernet Sauvignon' from which a consensus map was constructed via 411 simple sequence repeat (SSR) markers. Using genotyping-by-sequencing, 3825 single nucleotide polymorphism (SNP) markers were also generated. Of these, 1665 SNP and 407 SSR markers were clustered into 19 linkage groups in 159 genotypes, spanning a genetic distance of 2203.5 cM. Disease progression in response to P. viticola was studied in this population for 2 years under both laboratory and field conditions, and strong correlations were observed among data sets (Spearman correlation coefficient = 0.57-0.79). A quantitative trait loci (QTL) analysis indicated a resistance locus on chromosome 18, here named Rpv27, explaining 33.8% of the total phenotypic variation. Flanking markers closely linked with the trait can be further used for marker-assisted selection in the development of new cultivars with resistance to downy mildew.
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Affiliation(s)
- Surya Sapkota
- State Fruit Experiment Station at Mountain Grove Campus, Darr College of Agriculture, Missouri State University, Springfield, MO, 65897, USA
- Division of Plant Sciences, University of Missouri, Columbia, MO, 65211, USA
- Plant Pathology and Plant Microbe Biology Section, School of Integrative Plant Science, NYS Agricultural Experiment Station, Cornell University, Geneva, NY, 14456, USA
| | - Li-Ling Chen
- State Fruit Experiment Station at Mountain Grove Campus, Darr College of Agriculture, Missouri State University, Springfield, MO, 65897, USA
| | - Shanshan Yang
- Bioinformatics Core Facility, The Biodesign Institute, Arizona State University, Tempe, AZ, 85287-5001, USA
| | - Katie E Hyma
- Bioinformatics Facility, Institute of Biotechnology, Cornell University, Ithaca, NY, 14853, USA
| | | | - Chin-Feng Hwang
- State Fruit Experiment Station at Mountain Grove Campus, Darr College of Agriculture, Missouri State University, Springfield, MO, 65897, USA.
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18
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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] [What about the content of this article? (0)] [Affiliation(s)] [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.
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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
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19
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Liu S, Zhang C, Chao N, Lu J, Zhang Y. Cloning, Characterization, and Functional Investigation of VaHAESA from Vitis amurensis Inoculated with Plasmopara viticola. Int J Mol Sci 2018; 19:E1204. [PMID: 29659493 PMCID: PMC5979312 DOI: 10.3390/ijms19041204] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 03/26/2018] [Accepted: 04/06/2018] [Indexed: 12/14/2022] Open
Abstract
Plant pattern recognition receptors (PRRs) are essential for immune responses and establishing symbiosis. Plants detect invaders via the recognition of pathogen-associated molecular patterns (PAMPs) by PRRs. This phenomenon is termed PAMP-triggered immunity (PTI). We investigated disease resistance in Vitis amurensis to identify PRRs that are important for resistance against downy mildew, analyzed the PRRs that were upregulated by incompatible Plasmopara viticola infection, and cloned the full-length cDNA of the VaHAESA gene. We then analyzed the structure, subcellular localization, and relative disease resistance of VaHAESA. VaHAESA and PRR-receptor-like kinase 5 (RLK5) are highly similar, belonging to the leucine-rich repeat (LRR)-RLK family and localizing to the plasma membrane. The expression of PRR genes changed after the inoculation of V. amurensis with compatible and incompatible P. viticola; during early disease development, transiently transformed V. vinifera plants expressing VaHAESA were more resistant to pathogens than those transformed with the empty vector and untransformed controls, potentially due to increased H₂O₂, NO, and callose levels in the transformants. Furthermore, transgenic Arabidopsis thaliana showed upregulated expression of genes related to the PTI pathway and improved disease resistance. These results show that VaHAESA is a positive regulator of resistance against downy mildew in grapevines.
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Affiliation(s)
- Shaoli Liu
- The Viticulture and Enology Program, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
| | - Chi Zhang
- The Viticulture and Enology Program, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
| | - Nan Chao
- Center for Plant Biology, TSinghua University, Beijing 100084, China.
| | - Jiang Lu
- Center for Viticulture and Enology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200024, China.
- Guangxi Crop Genetic Improvement and Biotechnology Laboratory, Guangxi Academy of Agricultural Sciences, Nanning 530007, China.
| | - Yali Zhang
- The Viticulture and Enology Program, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
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20
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Tröster V, Setzer T, Hirth T, Pecina A, Kortekamp A, Nick P. Probing the contractile vacuole as Achilles' heel of the biotrophic grapevine pathogen Plasmopara viticola. Protoplasma 2017; 254:1887-1901. [PMID: 28550468 DOI: 10.1007/s00709-017-1123-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 05/10/2017] [Indexed: 05/20/2023]
Abstract
The causative agent of Grapevine Downy Mildew, the oomycete Plasmopara viticola, poses a serious threat to viticulture. In the current work, the contractile vacuole of the zoospore is analysed as potential target for novel plant protection strategies. Using a combination of electron microscopy, spinning disc confocal microscopy, and video differential interference contrast microscopy, we have followed the genesis and dynamics of this vacuole required during the search for the stomata, when the non-walled zoospore is exposed to hypotonic conditions. This subcellular description was combined with a pharmacological study, where the functionality of the contractile vacuole was blocked by manipulation of actin, by Na, Cu, and Al ions or by inhibition of the NADPH oxidase. We further observe that RGD peptides (mimicking binding sites for integrins at the extracellular matrix) can inhibit the function of the contractile vacuole as well. Finally, we show that an extract from Chinese liquorice (Glycyrrhiza uralensis) proposed as biocontrol for Downy Mildews can efficiently induce zoospore burst and that this activity depends on the activity of NADPH oxidase. The effect of the extract can be phenocopied by its major compound, glycyrrhizin, suggesting a mode of action for this biologically safe alternative to copper products.
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Affiliation(s)
- Viktoria Tröster
- Molecular Cell Biology, Botanical Institute Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 4, Bld. 30.43, 76131, Karlsruhe, Germany
| | - Tabea Setzer
- Molecular Cell Biology, Botanical Institute Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 4, Bld. 30.43, 76131, Karlsruhe, Germany
| | - Thomas Hirth
- Molecular Cell Biology, Botanical Institute Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 4, Bld. 30.43, 76131, Karlsruhe, Germany
| | - Anna Pecina
- Molecular Cell Biology, Botanical Institute Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 4, Bld. 30.43, 76131, Karlsruhe, Germany
| | - Andreas Kortekamp
- Institute of Plant Protection State Education and Research Center (DLR) Rheinpfalz, Breitenweg 71, 67435, Neustadt, Germany
| | - Peter Nick
- Molecular Cell Biology, Botanical Institute Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 4, Bld. 30.43, 76131, Karlsruhe, Germany.
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21
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Yin X, Liu RQ, Su H, Su L, Guo YR, Wang ZJ, Du W, Li MJ, Zhang X, Wang YJ, Liu GT, Xu Y. Pathogen development and host responses to Plasmopara viticola in resistant and susceptible grapevines: an ultrastructural study. Hortic Res 2017; 4:17033. [PMID: 28785414 PMCID: PMC5539432 DOI: 10.1038/hortres.2017.33] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 06/09/2017] [Accepted: 06/27/2017] [Indexed: 05/04/2023]
Abstract
The downy mildew disease in grapevines is caused by Plasmopara viticola. This disease poses a serious threat wherever viticulture is practiced. Wild Vitis species showing resistance to P. viticola offer a promising pathway to develop new grapevine cultivars resistant to P. viticola which will allow reduced use of environmentally unfriendly fungicides. Here, transmission and scanning microscopy was used to compare the resistance responses to downy mildew of three resistant genotypes of V. davidii var. cyanocarpa, V. piasesezkii and V. pseudoreticulata and the suceptible V. vinifera cultivar 'Pinot Noir'. Following inoculation with sporangia of P. viticola isolate 'YL' on V. vinifera cv. 'Pinot Noir', the infection was characterized by a rapid spread of intercellular hyphae, a high frequency of haustorium formation within the host's mesophyll cells, the production of sporangia and by the absence of host-cell necrosis. In contrast zoospores were collapsed in the resistant V. pseudoreticulata 'Baihe-35-1', or secretions appeared arround stomata at the beginning of the infection period in V. davidii var. cyanocarpa 'Langao-5' and V. piasezkii 'Liuba-8'. The main characteristics of the resistance responses were the rapid depositions of callose and the appearance of empty hyphae and the plasmolysis of penetrated tissue. Moreover, collapsed haustoria were observed in V. davidii var. cyanocarpa 'Langao-5' at 5 days post inoculation (dpi) and in V. piasezkii 'Liuba-8' at 7 dpi. Lastly, necrosis extended beyond the zone of restricted colonization in all three resistant genotypes. Sporangia were absent in V. piasezkii 'Liuba-8' and greatly decreased in V. davidii var. cyanocarpa 'Langao-5' and in V. pseudoreticulata 'Baihe-35-1' compared with in V. vinifera cv. 'Pinot Noir'. Overall, these results provide insights into the cellular biological basis of the incompatible interactions between the pathogen and the host. They indicate a number of several resistant Chinese wild species that could be used in developing new cultivars having good levels of downy mildew resistance.
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Affiliation(s)
- Xiao Yin
- State Key Laboratory of Crop Stress Biology
in Arid Areas, College of Horticulture, Northwest A&F University,
Yangling, Shaanxi
712100, China
- College of Horticulture, Northwest A&F
University, Yangling, Shaanxi
712100, China
- Key Laboratory of Horticultural Plant Biology
and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of
Horticulture, Northwest A&F University, Yangling,
Shaanxi
712100, China
| | - Rui-Qi Liu
- State Key Laboratory of Crop Stress Biology
in Arid Areas, College of Horticulture, Northwest A&F University,
Yangling, Shaanxi
712100, China
- College of Horticulture, Northwest A&F
University, Yangling, Shaanxi
712100, China
- Key Laboratory of Horticultural Plant Biology
and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of
Horticulture, Northwest A&F University, Yangling,
Shaanxi
712100, China
| | - Hang Su
- State Key Laboratory of Crop Stress Biology
in Arid Areas, College of Horticulture, Northwest A&F University,
Yangling, Shaanxi
712100, China
- College of Horticulture, Northwest A&F
University, Yangling, Shaanxi
712100, China
- Key Laboratory of Horticultural Plant Biology
and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of
Horticulture, Northwest A&F University, Yangling,
Shaanxi
712100, China
| | - Li Su
- State Key Laboratory of Crop Stress Biology
in Arid Areas, College of Horticulture, Northwest A&F University,
Yangling, Shaanxi
712100, China
- College of Horticulture, Northwest A&F
University, Yangling, Shaanxi
712100, China
- Key Laboratory of Horticultural Plant Biology
and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of
Horticulture, Northwest A&F University, Yangling,
Shaanxi
712100, China
| | - Yu-Rui Guo
- State Key Laboratory of Crop Stress Biology
in Arid Areas, College of Horticulture, Northwest A&F University,
Yangling, Shaanxi
712100, China
- College of Horticulture, Northwest A&F
University, Yangling, Shaanxi
712100, China
- Key Laboratory of Horticultural Plant Biology
and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of
Horticulture, Northwest A&F University, Yangling,
Shaanxi
712100, China
| | - Zi-Jia Wang
- Key Laboratory of Horticultural Plant Biology
and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of
Horticulture, Northwest A&F University, Yangling,
Shaanxi
712100, China
| | - Wei Du
- Key Laboratory of Horticultural Plant Biology
and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of
Horticulture, Northwest A&F University, Yangling,
Shaanxi
712100, China
| | - Mei-Jie Li
- Key Laboratory of Horticultural Plant Biology
and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of
Horticulture, Northwest A&F University, Yangling,
Shaanxi
712100, China
| | - Xi Zhang
- Key Laboratory of Horticultural Plant Biology
and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of
Horticulture, Northwest A&F University, Yangling,
Shaanxi
712100, China
| | - Yue-Jin Wang
- State Key Laboratory of Crop Stress Biology
in Arid Areas, College of Horticulture, Northwest A&F University,
Yangling, Shaanxi
712100, China
- College of Horticulture, Northwest A&F
University, Yangling, Shaanxi
712100, China
- Key Laboratory of Horticultural Plant Biology
and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of
Horticulture, Northwest A&F University, Yangling,
Shaanxi
712100, China
| | - Guo-Tian Liu
- State Key Laboratory of Crop Stress Biology
in Arid Areas, College of Horticulture, Northwest A&F University,
Yangling, Shaanxi
712100, China
- College of Horticulture, Northwest A&F
University, Yangling, Shaanxi
712100, China
- Key Laboratory of Horticultural Plant Biology
and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of
Horticulture, Northwest A&F University, Yangling,
Shaanxi
712100, China
| | - Yan Xu
- State Key Laboratory of Crop Stress Biology
in Arid Areas, College of Horticulture, Northwest A&F University,
Yangling, Shaanxi
712100, China
- College of Horticulture, Northwest A&F
University, Yangling, Shaanxi
712100, China
- Key Laboratory of Horticultural Plant Biology
and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of
Horticulture, Northwest A&F University, Yangling,
Shaanxi
712100, China
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22
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He R, Wu J, Zhang Y, Agüero CB, Li X, Liu S, Wang C, Walker MA, Lu J. Overexpression of a thaumatin-like protein gene from Vitis amurensis improves downy mildew resistance in Vitis vinifera grapevine. Protoplasma 2017; 254:1579-1589. [PMID: 27900595 DOI: 10.1007/s00709-016-1047-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 11/10/2016] [Indexed: 05/03/2023]
Abstract
Downy mildew is a highly destructive disease in grapevine production. A gene encoding pathogenesis-related (PR) thaumatin-like protein was isolated from the downy mildew-resistant grapevine "Zuoshan-1," a clonal selection from wild Vitis amurensis Rupr. The predicted thaumatin-like protein (VaTLP) has 225 amino acids and it is acidic, with a calculated isoelectric point of 4.8. The full length of the VaTLP gene was transformed into somatic embryogenic calli of V. vinifera 'Thompson Seedless' via Agrobacterium tumefaciens. Real-time RT-PCR confirmed that the VaTLP gene was expressed at a high level in the transgenic grapevines. Improved resistance of the transgenic lines against downy mildew was evaluated using leaf disks and whole plants inoculated with Plasmopara viticola, the pathogen causing grapevine downy mildew disease. Bioassay of the pathogen showed that both hyphae growth and asexual reproduction were inhibited significantly among the transgenic plants. Histological analysis also confirmed this disease resistance by demonstrating the inhibition and malformation of hyphae development in leaf tissue of the transgenic plants. These results indicated that the accumulation of VaTLP could enhance resistance to P. viticola in transgenic 'Thompson Seedless' grapevines.
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Affiliation(s)
- Rongrong He
- The Viticulture and Enology Program, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
- Department of Viticulture and Enology, University of California, Davis, Davis, CA, 95616, USA
| | - Jiao Wu
- The Viticulture and Enology Program, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Yali Zhang
- The Viticulture and Enology Program, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Cecilia B Agüero
- Department of Viticulture and Enology, University of California, Davis, Davis, CA, 95616, USA
| | - Xinlong Li
- The Viticulture and Enology Program, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Shaoli Liu
- The Viticulture and Enology Program, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Chaoxia Wang
- The Viticulture and Enology Program, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - M Andrew Walker
- Department of Viticulture and Enology, University of California, Davis, Davis, CA, 95616, USA.
| | - Jiang Lu
- The Viticulture and Enology Program, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China.
- Center for Viticulture and Enology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200024, China.
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23
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Liu SL, Wu J, Zhang P, Hasi G, Huang Y, Lu J, Zhang YL. Response of phytohormones and correlation of SAR signal pathway genes to the different resistance levels of grapevine against Plasmopara viticola infection. Plant Physiol Biochem 2016; 107:56-66. [PMID: 27244101 DOI: 10.1016/j.plaphy.2016.05.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 05/14/2016] [Accepted: 05/15/2016] [Indexed: 05/03/2023]
Abstract
Phytohormones play an important role in the process of disease resistance in plants. Here, we investigated which among salicylic acid, jasmonic acid, and abscisic acid performs a key role in plant defense after Plasmopara viticola infection in grapevine. We used grapevines possessing different resistance levels against P. viticola infection to study the relationship between the expression of key genes in the related resistance signaling pathways and the level of resistance. We performed high-performance liquid chromatography-mass spectrometry to estimate the phytohormone contents in grape leaves at different time points after the infection. Furthermore, we performed quantitative analyses of key genes such as EDS1, PAD4, ICS2, PAL, NPR1, TGA1, and PR1 in the systemic acquired resistance pathway by quantitative reverse transcription-polymerase chain reaction. The results showed an increased variation in the SA content, which was maintained at high levels, after P. viticola infection in plant species exhibiting stronger resistance to the pathogen; this finding highlights the importance of SA in plant defense mechanisms. Moreover, EDS1 and PAD4 expression did not show a positive correlation with disease resistance in grape; however, higher expression of other genes that were analyzed was observed in highly resistant grape varieties. Our results provide insights into the role of phytohormone regulation in the induction and maintenance of plant defense response to pathogens.
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Affiliation(s)
- Shao-Li Liu
- The Viticulture and Enology Program, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, PR China
| | - Jiao Wu
- The Viticulture and Enology Program, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, PR China
| | - Pei Zhang
- Hekou Inspection and Testing Center, Dongying, 257200, PR China
| | - Gerile Hasi
- Wine Management, Ecole Supérieure de Commerce de Dijon Bourgogne, Dijon, 21000, France
| | - Yu Huang
- Guangxi Academy of Agricultural Sciences, Nanning, 530007, PR China
| | - Jiang Lu
- The Viticulture and Enology Program, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, PR China
| | - Ya-Li Zhang
- The Viticulture and Enology Program, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, PR China.
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24
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Abstract
A major aim in grapevine breeding is the provision of cultivars resistant to downy mildew. As Plasmopara viticola produces sporangia on the abaxial surface of susceptible cultivars, disease symptoms on both leaf sides may be detected and quantified by technical sensors. The response of cultivars 'Mueller-Thurgau', 'Regent', and 'Solaris', which differ in resistance to P. viticola, was characterized under controlled conditions by using hyperspectral sensors. Spectral reflectance was suitable to differentiate between non-infected cultivars and leaf sides of the bicolored grapevine. Brown discoloration of tissue became visible on both leaf sides of resistant cultivars 2 days before downy mildew symptoms appeared on the susceptible 'Mueller-Thurgau' cultivar. Infection of this cultivar resulted in significant (P<0.05) reflectance changes 1-2 days prior to abaxial sporulation induced by high relative humidity, or the formation of adaxial oil spots. Hyperspectral imaging was more sensitive in disease detection than non-imaging and provided spatial information on the leaf level. Spectral indices provided information on the variability of chlorophyll content, photosynthetic activity, and relative water content of leaf tissue in time and space. On 'Mueller-Thurgau' downy mildew translated reflectance to higher values as detectable by the index DMI_3=(R470+R682+R800)/(R800/R682) and affected reflectance at 1450nm. Tissue discoloration on 'Regent' and 'Solaris' cultivars was associated with lower reflectance between 750 and 900nm; blue and red reflectance demonstrated differences from leaf necroses. With high inoculum densities, P. viticola sporulated on even resistant cultivars. Hyperspectral characterization at the tissue level proved suitable for phenotyping plant resistance to pathogens and provided information on resistance mechanisms.
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Affiliation(s)
- Erich-Christian Oerke
- Rheinische Friedrich-Wilhelms-Universität Bonn, INRES - Plant Diseases and Crop Protection, Meckenheimer Allee 166a, 53115 Bonn, Germany
| | - Katja Herzog
- Julius Kuehn-Institute Federal Research Centre of Cultivated Plants, Institute for Grapevine Breeding Geilweilerhof, 76833 Siebeldingen, Germany
| | - Reinhard Toepfer
- Julius Kuehn-Institute Federal Research Centre of Cultivated Plants, Institute for Grapevine Breeding Geilweilerhof, 76833 Siebeldingen, Germany
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25
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Liu R, Wang L, Zhu J, Chen T, Wang Y, Xu Y. Histological responses to downy mildew in resistant and susceptible grapevines. Protoplasma 2015; 252:259-70. [PMID: 25027553 DOI: 10.1007/s00709-014-0677-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 06/28/2014] [Indexed: 05/04/2023]
Abstract
Downy mildew in grapevines, caused by Plasmopara viticola, is a very serious disease throughout the grape-producing nations, especially in more humid climates. Downy mildew mainly affects the cultivated varieties of Vitis vinifera. A promising way to minimize or eliminate P. viticola infections is by the adoption of resistant cultivars. Chinese wild grapevines are reported to possess resistance to many fungal diseases. In this study, three Chinese wild grapevines (Vitis pseudoreticulata Baihe-35-1, Vitis davidii var. cyanocarpa Langao-5, and Vitis piasezkii Liuba-8) and a European cultivated variety (V. vinifera cv. Pinot noir) were inoculated with P. viticola, and a histological survey was undertaken. Macroscopic observations revealed no sporulation in V. piasezkii Liuba-8, little sporulation in V. pseudoreticulata Baihe-35-1 and V. davidii var. cyanocarpa Langao-5, but serious sporulation in V. vinifera cv. Pinot noir. Aniline blue staining indicated callose deposition in V. pseudoreticulata Baihe-35-1, V. davidii var. cyanocarpa Langao-5, and V. piasezkii Liuba-8. Cells with distinctive fluorescence were also observed in V. pseudoreticulata Baihe-35-1. After staining with 3,3-diaminobenzidine, production of H₂O₂ was observed early on, after infection in V. davidii var. cyanocarpa Langao-5 and V. piasezkii Liuba-8. No H₂O₂ accumulation was observed in V. vinifera cv. Pinot noir. It is concluded that V. piasezkii Liuba-8 should be classified as "highly resistant" to downy mildew, V. pseudoreticulata Baihe-35-1 and V. davidii var. cyanocarpa Langao-5 as "resistant," and V. vinifera Pinot noir as "susceptible." The possible roles of stomatal callose deposition in the defense r6eactions of the mildew-resistant grapevines are discussed.
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Affiliation(s)
- Ruiqi Liu
- State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
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26
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Monteiro F, Sebastiana M, Pais MS, Figueiredo A. Reference gene selection and validation for the early responses to downy mildew infection in susceptible and resistant Vitis vinifera cultivars. PLoS One 2013; 8:e72998. [PMID: 24023800 PMCID: PMC3762845 DOI: 10.1371/journal.pone.0072998] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2013] [Accepted: 07/16/2013] [Indexed: 01/04/2023] Open
Abstract
The pivotal role of cultivated grapevine (Vitis vinifera L.) in many countries economy is compromised by its high susceptibility to Plasmopara viticola, the causal agent of downy mildew disease. Recent research has identified a set of genes related to resistance which may be used to track downy mildew infection. Quantification of the expression of these resistance genes requires normalizing qPCR data using reference genes with stable expression in the system studied. In this study, a set of eleven genes (VATP16, 60 S, UQCC, SMD3, EF1α, UBQ, SAND, GAPDH, ACT, PsaB, PTB2) was evaluated to identify reference genes during the first hours of interaction (6, 12, 18 and 24 hpi) between two V. vinifera genotypes and P. viticola. Two analyses were used for the selection of reference genes: direct comparison of susceptible, Trincadeira, and resistant, Regent, V. vinifera cultivars at 0 h, 6, 12, 18 and 24 hours post inoculation with P. viticola (genotype effect); and comparison of each genotype with mock inoculated samples during inoculation time-course (biotic stress effect). Three statistical methods were used, GeNorm, NormFinder, and BestKeeper, allowing to identify UBQ, EF1α and GAPDH as the most stable genes for the genotype effect. For the biotic stress effect, EF1α, SAND and SMD3 were the most constant for the susceptible cultivar Trincadeira and EF1α, GAPDH, UBQ for the resistant cultivar Regent. In addition, the expression of three defense-related transcripts, encoding for subtilisin-like protein, CYP and PR10, was analysed, for both datasets, during inoculation time-course. Taken together, our results provide guidelines for reference gene(s) selection towards a more accurate and widespread use of qPCR to study the first hours of interaction between different grapevine cultivars and P. viticola.
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Affiliation(s)
- Filipa Monteiro
- Plant Systems Biology Lab, Center of Biodiversity, Functional & Integrative Genomics (BioFIG), Science Faculty of Lisbon University, Lisboa, Portugal
- * E-mail: (AF); (FM)
| | - Mónica Sebastiana
- Plant Systems Biology Lab, Center of Biodiversity, Functional & Integrative Genomics (BioFIG), Science Faculty of Lisbon University, Lisboa, Portugal
| | - Maria Salomé Pais
- Plant Systems Biology Lab, Center of Biodiversity, Functional & Integrative Genomics (BioFIG), Science Faculty of Lisbon University, Lisboa, Portugal
| | - Andreia Figueiredo
- Plant Systems Biology Lab, Center of Biodiversity, Functional & Integrative Genomics (BioFIG), Science Faculty of Lisbon University, Lisboa, Portugal
- * E-mail: (AF); (FM)
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27
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Guan X, Buchholz G, Nick P. The cytoskeleton is disrupted by the bacterial effector HrpZ, but not by the bacterial PAMP flg22, in tobacco BY-2 cells. J Exp Bot 2013; 64:1805-16. [PMID: 23408828 PMCID: PMC3638817 DOI: 10.1093/jxb/ert042] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Plant innate immunity is composed of two layers. Basal immunity is triggered by pathogen-associated molecular patterns (PAMPs) such as the flagellin-peptide flg22 and is termed PAMP-triggered immunity (PTI). In addition, effector-triggered immunity (ETI) linked with programmed cell death and cytoskeletal reorganization can be induced by pathogen-derived factors, such as the Harpin proteins originating from phytopathogenic bacteria. To get insight into the link between cytoskeleton and PTI or ETI, this study followed the responses of actin filaments and microtubules to flg22 and HrpZ in vivo by spinning-disc confocal microscopy in GFP-tagged marker lines of tobacco BY-2. At a concentration that clearly impairs mitosis, flg22 can induce only subtle cytoskeletal responses. In contrast, HrpZ causes a rapid and massive bundling of actin microfilaments (completed in ~20 min, i.e. almost simultaneously with extracellular alkalinization), which is followed by progressive disintegration of actin cables and cytoplasmic microtubules, a loss of cytoplasmic structure, and vacuolar disintegration. Cytoskeletal disruption is proposed as an early event that discriminates HrpZ-triggered ETI-like defence from flg22-triggered PTI.
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Affiliation(s)
- Xin Guan
- Molecular Cell Biology, Botanical Institute, Karlsruhe Institute of Technology, Kaiserstr. 2, D-76128 Karlsruhe, Germany.
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Abstract
ABSTRACT The resistance and susceptibility of grapevines to downy mildew (DM) disease caused by Plasmopara viticola were compared among different cultivars/accessions belonging to Vitis vinifera, V. rotundifolia, and 10 oriental Vitis species. After inoculation with P. viticola pathogen, no symptom was found in V. rotundifolia grapevines at all, while oriental species V. davidii and V. piasezkii, like V. vinifera, were susceptible to DM disease. The other eight oriental Vitis species showed various resistance levels to DM disease. Intraspecific resistant variations were also observed in V. amurensis. Microscopy studies were conducted on various time courses after pathogen infection on grape leaves. P. viticola hyphae were not observed in V. rotundifolia cultivars, while symptoms with varying degrees of severity were observed among the Euvitis species. In general, the DM resistant oriental species showed a slower development of hypha and less formation of haustoria than DM susceptible V. vinifera grapevines. Cells with distinctive fluorescence were observed in V. rotundifolia and the oriental species V. pseudoreticulata, and callose deposits were observed in V. rotundifolia, V. pseudoreticulata, and V. amurensis grapevines. Based on the results of morphological observations and microscopy studies, we concluded that there were five levels of grapevine resistance to P. viticola pathogen: (i) immune, (ii) extremely resistant, (iii) resistant, (iv) partly resistant, and (v) susceptible.
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Affiliation(s)
- Ying Yu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
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Palmieri MC, Perazzolli M, Matafora V, Moretto M, Bachi A, Pertot I. Proteomic analysis of grapevine resistance induced by Trichoderma harzianum T39 reveals specific defence pathways activated against downy mildew. J Exp Bot 2012; 63:6237-51. [PMID: 23105132 PMCID: PMC3481215 DOI: 10.1093/jxb/ers279] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Downy mildew is caused by the oomycete Plasmopara viticola and is one of the most serious diseases of grapevine. The beneficial microorganism Trichoderma harzianum T39 (T39) has previously been shown to induce plant-mediated resistance and to reduce the severity of downy mildew in susceptible grapevines. In order to better understand the cellular processes associated with T39-induced resistance, the proteomic and histochemical changes activated by T39 in grapevine were investigated before and 1 day after P. viticola inoculation. A comprehensive proteomic analysis of T39-induced resistance in grapevine was performed using an eight-plex iTRAQ protocol, resulting in the identification and quantification of a total of 800 proteins. Most of the proteins directly affected by T39 were found to be involved in signal transduction, indicating activation of a complete microbial recognition machinery. Moreover, T39-induced resistance was associated with rapid accumulation of reactive oxygen species and callose at infection sites, as well as changes in abundance of proteins involved in response to stress and redox balance, indicating an active defence response to downy mildew. On the other hand, proteins affected by P. viticola in control plants mainly decreased in abundance, possibly reflecting the establishment of a compatible interaction. Finally, the high-throughput iTRAQ protocol allowed de novo peptide sequencing, which will be used to improve annotation of the Vitis vinifera cv. Pinot Noir proteome.
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Affiliation(s)
- Maria Cristina Palmieri
- IASMA Research and Innovation Centre, Fondazione Edmund Mach, via E. Mach 1, 38010 San Michele all’Adige, Trento, Italy
| | - Michele Perazzolli
- IASMA Research and Innovation Centre, Fondazione Edmund Mach, via E. Mach 1, 38010 San Michele all’Adige, Trento, Italy
- * To whom correspondence should be addressed. E-mail:
| | - Vittoria Matafora
- Biological Mass Spectrometry Unit DIBIT, San Raffaele Scientific Institute, via Olgettina 58, 20132 Milano, Italy
| | - Marco Moretto
- IASMA Research and Innovation Centre, Fondazione Edmund Mach, via E. Mach 1, 38010 San Michele all’Adige, Trento, Italy
| | - Angela Bachi
- Biological Mass Spectrometry Unit DIBIT, San Raffaele Scientific Institute, via Olgettina 58, 20132 Milano, Italy
| | - Ilaria Pertot
- IASMA Research and Innovation Centre, Fondazione Edmund Mach, via E. Mach 1, 38010 San Michele all’Adige, Trento, Italy
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30
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Abstract
Plant microtubules have evolved into a versatile tool to link environmental signals into flexible morphogenesis. Cortical microtubules define the axiality of cell expansion by control of cellulose orientation. Plant-specific microtubule structures such as preprophase band and phragmoplast determine symmetry and axiality of cell divisions. In addition, microtubules act as sensors and integrators for stimuli such as mechanic load, gravity, but also osmotic stress, cold and pathogen attack. Many of these functions are specific for plants and involve specific proteins or the recruitment of proteins to new functions. The review aims to ventilate the potential of microtubule-based strategies for biotechnological application by highlighting representative case studies. These include reorientation of cortical microtubules to increase lodging resistance, control of microtubule dynamics to alter the gravity-dependent orientation of leaves, the use of microtubules as sensitive thermometers to improve adaptive cold tolerance of chilling and freezing sensitive plants, the reduction of microtubule treadmilling to inhibit cell-to-cell transport of plant viruses, or the modulation of plant defence genes by pharmacological manipulation of microtubules. The specificity of these responses is controlled by a great variety of specific associated proteins opening a wide field for biotechnological manipulation of plant architecture and stress tolerance.
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Affiliation(s)
- Peter Nick
- Molecular Cell Biology, Karlsruhe Institute of Technology, Kaiserstr 2, 76128 Karlsruhe, Germany.
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31
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Figueiredo A, Monteiro F, Fortes AM, Bonow-Rex M, Zyprian E, Sousa L, Pais MS. Cultivar-specific kinetics of gene induction during downy mildew early infection in grapevine. Funct Integr Genomics 2012; 12:379-86. [PMID: 22246600 DOI: 10.1007/s10142-012-0261-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Revised: 12/08/2011] [Accepted: 01/01/2012] [Indexed: 01/05/2023]
Abstract
The oomycete pathogen Plasmopara viticola (Berk. et Curt.) Berl. et de Toni is the causing agent of the destructive downy mildew disease in grapevine. Despite the advances towards elucidation of grapevine resistance mechanisms to downy mildew, increased knowledge of the biological and genetic components of the pathosystem is important to design suitable breeding strategies. Previously, a cDNA microarray approach was used to compare two Vitis vinifera genotypes Regent and Trincadeira (resistant and susceptible to downy mildew, respectively) in field conditions. The same cDNA microarray chip was used to confirm field-based results and to compare both genotypes under greenhouse conditions at 0, 6, and 12 h post-inoculation with P. viticola. Results show that when comparing both cultivars after pathogen inoculation, there is a preferential modulation of several defense, signaling, and metabolism associated transcripts in Regent. Early transcriptional changes are discussed in terms of genetic background and resistance mechanism. This study is the first to directly compare resistant and susceptible cultivars responses as early as 6 hpi with P. viticola, providing several candidate genes potentially related to the expression of resistance traits.
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Affiliation(s)
- Andreia Figueiredo
- Plant Systems Biology Lab, Center of Biodiversity, Functional & Integrative Genomics, Science Faculty of Lisbon University, 1749-016 Lisbon, Portugal.
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Schwander F, Eibach R, Fechter I, Hausmann L, Zyprian E, Töpfer R. Rpv10: a new locus from the Asian Vitis gene pool for pyramiding downy mildew resistance loci in grapevine. Theor Appl Genet 2012; 124:163-76. [PMID: 21935694 DOI: 10.1007/s00122-011-1695-4] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Accepted: 08/29/2011] [Indexed: 05/18/2023]
Abstract
A population derived from a cross between grapevine breeding strain Gf.Ga-52-42 and cultivar 'Solaris' consisting of 265 F1-individuals was genetically mapped using SSR markers and screened for downy mildew resistance. Quantitative trait locus (QTL) analysis revealed two strong QTLs on linkage groups (LGs) 18 and 09. The locus on LG 18 was found to be identical with the previously described locus Rpv3 and is transmitted by Gf.Ga-52-42. 'Solaris' transmitted the resistance-related locus on LG 09 explaining up to 50% of the phenotypic variation in the population. This downy mildew resistance locus is named Rpv10 for resistance to Plasmopara viticola. Rpv10 was initially introgressed from Vitis amurensis, a wild species of the Asian Vitis gene pool. The one-LOD supported confidence interval of the QTL spans a section of 2.1 centi Morgan (cM) corresponding to 314 kb in the reference genome PN40024 (12x). Eight resistance gene analogues (RGAs) of the NBS-LRR type and additional resistance-linked genes are located in this region of PN40024. The F1 sub-population which contains the Rpv3 as well as the Rpv10 locus showed a significantly higher degree of resistance, indicating additive effects by pyramiding of resistance loci. Possibilities for using the resistance locus Rpv10 in a grapevine breeding programme are discussed. Furthermore, the marker data revealed 'Severnyi' × 'Muscat Ottonel' as the true parentage for the male parent of 'Solaris'.
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Affiliation(s)
- Florian Schwander
- JKI Institute for Grapevine Breeding Geilweilerhof, 76833, Siebeldingen, Germany.
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Casagrande K, Falginella L, Castellarin SD, Testolin R, Di Gaspero G. Defence responses in Rpv3-dependent resistance to grapevine downy mildew. Planta 2011; 234:1097-109. [PMID: 21735199 DOI: 10.1007/s00425-011-1461-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2011] [Accepted: 06/13/2011] [Indexed: 05/08/2023]
Abstract
The Rpv3 locus determines the ability to operate an isolate-specific hypersensitive response (HR) against Plasmopara viticola in grapevines that carry a resistant Rpv3 (+) haplotype. Artificial infection was performed on leaf discs of Rpv3 (+) and Rpv3 (-) grapevines with two distinct isolates of the pathogen (avrRpv3 (+) and avrRpv3 (-)). The plant response, including the establishment of HR and changes in expression of 33 genes, was compared to the development of the pathogen. HR was induced exclusively in the Rpv3 (+) host upon inoculation with the avrRpv3 (+) isolate of the pathogen, which is assumed to use avrRpv3 (+) effectors that are recognised by/through the plant Rpv3 (+) gene product. The limitation imposed on pathogen growth was the result of inducible responses elicited by the Rpv3 (+)-avrRpv3 (+) interaction. This host reaction relied on transcriptional induction of the HR-associated gene HSR1 and salicylic acid-induced pathogenesis-related (PR) genes PR-1 and PR-2 during the initial 24-48 h post-inoculation. These events had no parallel in the Rpv3 (-) host or upon infection with the avrRpv3 (-) isolate. The emerging model for Rpv3-mediated defence, which is dependent upon race-specific recognition, associated with up-regulation of PR-1 and PR-2 genes, and enforced by localised HR-type necrosis, is compatible with the cascade of events initiated by the products of NB-LRR and LRR-kinase receptor-like genes, such as those residing in the Rpv3 locus.
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Affiliation(s)
- Karen Casagrande
- Dipartimento di Scienze Agrarie e Ambientali, University of Udine, via delle scienze 208, 33100, Udine, Italy
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Alonso-Villaverde V, Voinesco F, Viret O, Spring JL, Gindro K. The effectiveness of stilbenes in resistant Vitaceae: ultrastructural and biochemical events during Plasmopara viticola infection process. Plant Physiol Biochem 2011; 49:265-74. [PMID: 21256040 DOI: 10.1016/j.plaphy.2010.12.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Revised: 12/19/2010] [Accepted: 12/20/2010] [Indexed: 05/20/2023]
Abstract
Leaves of different Vitis vinifera L. cultivars, susceptible or resistant to downy mildew, Chasselas, Solaris, IRAC 2091 (cvs. Gamaret x Bronner) and Muscadinia rotundifolia were inoculated with Plasmopara viticola. Samples were then examined by scanning and transmission electron microscopy, by light microscopy and for their ability to synthesise stilbenes. These phytoalexins were strictly analysed at infection sites. In the susceptible Chasselas, P. viticola colonises, at 72h post-infection (hpi), all of the spongy mesophyll with functional haustoria and produces mainly the non toxic piceide. No necrotic zone was observed on Chasselas leaves. The ultrastructural response to downy mildew infection is different in each of the other three resistant grape cultivars. In Solaris, where leaf necrosis are rapidly induced, the infection is restricted to the upper part of the loose spongy mesophyll, and associated with a rapid cell wall disruption and the dispersion of cytoplasmic content along with the production of viniferins. In IRAC 2091, leaf necrosis are quite similar to those observed on Solaris but the infected plant cell, as well as the haustoria, show high electron dense cellular particles without any recognisable organelles, probably related to the effect of the toxic compound pterostilbene, which is synthesised in this grape cultivar. In M. rotundifolia leaf necrosis are much more scarce and smaller than in other cultivars, but pathogen and plant cells are both strongly affected, with concomitant expulsion of cytoplasmic materials through the stomata after P. viticola penetration. In this cultivar, the concentration of all identified stilbenes exceeds 1×10³ μmol mg(-1) FW. The critical role of stilbenes in the resistance of Vitis spp. is discussed.
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35
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Schröder S, Telle S, Nick P, Thines M. Cryptic diversity of Plasmopara viticola (Oomycota, Peronosporaceae) in North America. ORG DIVERS EVOL 2011; 11:3-7. [DOI: 10.1007/s13127-010-0035-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Qiao F, Chang XL, Nick P. The cytoskeleton enhances gene expression in the response to the Harpin elicitor in grapevine. J Exp Bot 2010; 61:4021-31. [PMID: 20675535 PMCID: PMC2935876 DOI: 10.1093/jxb/erq221] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Revised: 06/07/2010] [Accepted: 06/21/2010] [Indexed: 05/17/2023]
Abstract
The cytoskeleton undergoes dramatic reorganization during plant defence. This response is generally interpreted as part of the cellular repolarization establishing physical barriers against the invading pathogen. To gain insight into the functional significance of cytoskeletal responses for defence, two Vitis cell cultures that differ in their microtubular dynamics were used, and the cytoskeletal response to the elicitor Harpin in parallel to alkalinization of the medium as a fast response, and the activation of defence-related genes were followed. In one cell line derived from the grapevine cultivar 'Pinot Noir', microtubules contained mostly tyrosinylated alpha-tubulin, indicating high microtubular turnover, whereas in another cell line derived from the wild grapevine V. rupestris, the alpha-tubulin was strongly detyrosinated, indicating low microtubular turnover. The cortical microtubules were disrupted and actin filaments were bundled in both cell lines, but the responses were elevated in V. rupestris as compared with V. vinifera cv. 'Pinot Noir'. The cytoskeletal responsiveness correlated with elicitor-induced alkalinization and the expression of defence genes. Using resveratrol synthase and stilbene synthase as examples, it could be shown that pharmacological manipulation of microtubules could induce gene expression in the absence of elicitor. These findings are discussed with respect to a role for microtubules as positive regulators of defence-induced gene expression.
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Affiliation(s)
- Fei Qiao
- College of Horticulture, Northwest Argriculture & Forestry University, Yangling 712100, Shaanxi, PR China
- Institute of Botany 1, Karlsruhe Institute of Technology, Kaiserstrasse 2, D-76128 Karlsruhe, Germany
| | - Xiao-Li Chang
- Institute of Botany 1, Karlsruhe Institute of Technology, Kaiserstrasse 2, D-76128 Karlsruhe, Germany
| | - Peter Nick
- Institute of Botany 1, Karlsruhe Institute of Technology, Kaiserstrasse 2, D-76128 Karlsruhe, Germany
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37
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Tröndle D, Schröder S, Kassemeyer HH, Kiefer C, Koch MA, Nick P. Molecular phylogeny of the genus Vitis (Vitaceae) based on plastid markers. Am J Bot 2010; 97:1168-1178. [PMID: 21616868 DOI: 10.3732/ajb.0900218] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
PREMISE OF THE STUDY This work represents the first molecular phylogeny of the economically important genus Vitis, an important genetic resource for breeding in grapevine, Vitis vinifera. • METHODS A molecular phylogeny of Vitis using a combined data set of three noncoding regions of the plastid DNA genome was constructed from 47 accessions covering 30 species of Vitis. The data for the trnL-F marker were combined with previously published data across the Vitaceae. • KEY RESULTS The molecular phylogeny demonstrated monophyly of the genus Vitis. Based on the combined analysis of three genes, Vitis is split into three clades that mirror the continental distribution of these accessions. The diversity is highest in the Asian clade, but the general genetic distances across taxa from different continents are relatively small. • CONCLUSIONS The findings support a relatively recent and intense gene flow between East Asia and North America and the possible impact of hybridization on the evolution of the genus Vitis. Taxon identity in important stock collections should be screened carefully because roughly 10% of the accessions analyzed in the present study had been misidentified.
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Affiliation(s)
- Dorothee Tröndle
- Botanical Institute, Molecular Cell Biology, Karlsruhe Institute of Technology, Kaiserstrasse 2 76128 Karlsruhe, Germany
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Bellin D, Peressotti E, Merdinoglu D, Wiedemann-Merdinoglu S, Adam-Blondon AF, Cipriani G, Morgante M, Testolin R, Di Gaspero G. Resistance to Plasmopara viticola in grapevine 'Bianca' is controlled by a major dominant gene causing localised necrosis at the infection site. Theor Appl Genet 2009; 120:163-76. [PMID: 19821064 DOI: 10.1007/s00122-009-1167-2] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Accepted: 09/27/2009] [Indexed: 05/20/2023]
Abstract
Downy mildew resistance is a quantitative trait in grapevines of the genus Vitis. The grapevine 'Bianca' has retained resistance, originally present in its North American ancestors, through several cycles of backcrossing with susceptible cultivars of Vitis vinifera followed by phenotypic selection. The genetic control of the trait was studied using 116 full-siblings from the cross 'Chardonnay' x 'Bianca' and parental genetic maps consisting of 298 and 312 markers, respectively. Ratings of resistance and histological identification of the stage of interaction, when pathogen development is impaired in resistant individuals, were performed using leaf disc inoculation assays with two isolates of Plasmopara viticola collected in Italian and French vineyards. 'Bianca' and 59% of its offspring were heterozygous for a dominant gene, located in a 2.9 cM interval at the Rpv3 locus on chromosome 18, responsible for the onset of a hypersensitive response (HR) at the infection sites within 2 days post inoculation (dpi). Localised necrosis was the earliest phenotypic difference compared to susceptible individuals, it did not halt pathogen growth, but it was associated with a significant reduction of pathogen performance and disease symptoms from 3 to 6 dpi. QTL peaks for quantitative ratings revealed the strongest effects being caused by the Rpv3 locus: extent of mesophyll colonisation (LOD 3.1, percentage of explained phenotypic variance 16.2%), sporulation density (29.7, 74.3%), and symptom severity expressed by the OIV452 descriptor recommended by the Office International de la Vigne et du Vin (28.3, 74.6%). Strong correlation was observed between the ability of a seedling to mount an HR under controlled experimental conditions and quantitative resistance of the adult plant exposed to natural infections in the field, which was expressed by the number of leaves with fungal sporulation, in two consecutive years of observations.
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Affiliation(s)
- Diana Bellin
- Dipartimento di Scienze Agrarie e Ambientali, University of Udine, via delle Scienze 208, 33100, Udine, Italy
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