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  1. Article: First report of Flavescence dorée phytoplasma identification and characterization in three species of leafhoppers

    Belgeri, Elena / Rizzoli, Attilio / Jermini, Mauro / Angelini, Elisa / Filippin, Luisa / Rigamonti, Ivo Ercole

    Journal of plant pathology. 2022 Feb., v. 104, no. 1

    2022  

    Abstract: Phytoplasma strains were sporadically found in specimens of Hishimonus hamatus, Japananus hyalinus and Graphocephala fennahi caught during an entomological survey conducted in Southern Switzerland on the edges and woods surrounding cultivated vineyards ... ...

    Abstract Phytoplasma strains were sporadically found in specimens of Hishimonus hamatus, Japananus hyalinus and Graphocephala fennahi caught during an entomological survey conducted in Southern Switzerland on the edges and woods surrounding cultivated vineyards in 2017. The subsequent molecular characterization of the pathogens allowed to identify them as strains strictly associated to Flavescence dorée, a serious European grapevine disease, transmitted from vine to vine by the leafhopper Scaphoideus titanus. In particular, M12 and M50 genotypes were found in H. hamatus and J. hyalinus, respectively, while G. fennahi harboured mixed phytoplasma genotypes with at least two different Flavescence dorée isolates. The potential importance of these findings in the frame of the Flavescence dorée epidemics in Europe is discussed.
    Keywords Graphocephala fennahi ; Hishimonus ; Phytoplasma ; Scaphoideus titanus ; Vitis ; insect surveys ; phytoplasmal diseases ; plant pathology ; vines ; Switzerland
    Language English
    Dates of publication 2022-02
    Size p. 375-379.
    Publishing place Edizioni ETS
    Document type Article
    ZDB-ID 1378427-4
    ISSN 2239-7264 ; 1125-4653
    ISSN (online) 2239-7264
    ISSN 1125-4653
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 6602: Show issues

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  2. Article ; Online: First record of Erasmoneura vulnerata Fitch, 1851 (Hemiptera, Cicadellidae, Typhlocybinae) in Switzerland

    Rizzoli, Attilio / Battelli, Riccardo / Conedera, Marco / Jermini, Mauro

    Alpine Entomology. 2020 July 14, v. 4 p.151-156

    2020  

    Abstract: The first record of Erasmoneura vulnerata Fitch, 1851 in Switzerland is reported. Specimens were collected in 2019 using yellow sticky traps during a Scaphoideus titanus monitoring campaign in vineyards in Ticino (Southern Switzerland). E. vulnerata is a ...

    Abstract The first record of Erasmoneura vulnerata Fitch, 1851 in Switzerland is reported. Specimens were collected in 2019 using yellow sticky traps during a Scaphoideus titanus monitoring campaign in vineyards in Ticino (Southern Switzerland). E. vulnerata is a grapevine pest that has recently been introduced to Europe, whose phytophagy causes detrimental damage to grapevine leaves. Its occurrence in this area has likely been favored by the ongoing suspension of insecticide treatments for the control of the S. titanus population, the vector agent of the “Flavescence dorée” phytoplasma in grapevines.
    Keywords Scaphoideus titanus ; Vitis ; entomology ; herbivores ; insecticides ; pests ; Switzerland ; Erythroneura ; grapevine pest ; leafhopper ; Neozoa
    Language English
    Dates of publication 2020-0714
    Size p. 151-156.
    Publishing place Pensoft Publishers
    Document type Article ; Online
    ISSN 2535-0889
    DOI 10.3897/alpento.4.53967
    Database NAL-Catalogue (AGRICOLA)

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  3. Book ; Online ; Thesis: Quantification of the influence of plasmopara viticola on growth, yield and plant response for the development of an integrated control strategy on vitis vinifera (CV. Merlot)

    Jermini, Mauro

    2010  

    Author's details by Mauro Jermini
    Language English
    Size Online-Ressource (98 S), Ill
    Publisher ETH
    Publishing place Zürich
    Document type Book ; Online ; Thesis
    Thesis / German Habilitation thesis Diss., Eidgenössische Technische Hochschule ETH Zürich, Nr. 19257--Zürich, 1925
    Database Former special subject collection: coastal and deep sea fishing

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  4. Article: Phloem and xylem modifications of Vitis vinifera stems in response to flavescence dorée phytoplasma infection

    Jelmini, Luca / Rizzoli, Attilio / Jermini, Mauro / Schumpp, Olivier / Conedera, Marco

    Plant pathology. 2021 May, v. 70, no. 4

    2021  

    Abstract: Anatomical modifications of xylem and phloem tissues of grapevine (Vitis vinifera) stems of shoots infected by the flavescence dorée phytoplasma (FDp) were first observed and described in the 1960s, but never quantified in detail. In this paper, we ... ...

    Abstract Anatomical modifications of xylem and phloem tissues of grapevine (Vitis vinifera) stems of shoots infected by the flavescence dorée phytoplasma (FDp) were first observed and described in the 1960s, but never quantified in detail. In this paper, we describe and quantify the impact of FDp on grapevine stem tissues, and relate it to the level of expression of symptoms and to cultivar‐specific FDp susceptibility. For this purpose, we measured and quantified the anatomical parameters of xylem and phloem tissues of a tolerant (Merlot) and a susceptible (Chardonnay) cultivar. For each cultivar, thin sections of eight shoots with symptoms from FDp‐infected grapevines, eight symptomless shoots from the same FDp‐infected grapevines, and eight symptomless shoots from symptomless grapevines (control) were compared. Results showed general inhibition of xylem growth and proliferation of phloem tissues (hyperplasia) with lack or irregular arrangement of the fibre‐sclereids in the axial phloem of the stems from shoots with symptoms, irrespective of the cultivar. Xylem vessels of infected Merlot shoots were partly occluded by tyloses and a higher number of smaller vessels were produced than in control plants. Thus, the anatomical responses confirmed the detrimental effect of FDp on stems of infected grapevine shoots, including impaired stem development and lack of periderm formation. Statistically significant differences were found between the two cultivars with different levels of susceptibility to FDp infection.
    Keywords Phytoplasma ; Vitis vinifera ; cultivars ; hyperplasia ; periderm ; phloem ; phytoplasmal diseases ; plant pathology ; tyloses
    Language English
    Dates of publication 2021-05
    Size p. 970-979.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note NAL-AP-2-clean ; JOURNAL ARTICLE
    ZDB-ID 415941-x
    ISSN 1365-3059 ; 0032-0862
    ISSN (online) 1365-3059
    ISSN 0032-0862
    DOI 10.1111/ppa.13330
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 945: Show issues

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  5. Article: Alnus glutinosa and Orientus ishidae (Matsumura, 1902) share phytoplasma genotypes linked to the ‘Flavescence dorée’ epidemics

    Rizzoli, Attilio / Belgeri, Elena / Jermini, Mauro / Conedera, Marco / Filippin, Luisa / Angelini, Elisa

    Journal of applied entomology. 2021 Dec., v. 145, no. 10

    2021  

    Abstract: Flavescence dorée (FD) is a grapevine disease caused by associated phytoplasmas (FDp) which are epidemically spread by their main vector Scaphoideus titanus. The possible roles of alternative and secondary FDp plant hosts and vectors have gained interest ...

    Abstract Flavescence dorée (FD) is a grapevine disease caused by associated phytoplasmas (FDp) which are epidemically spread by their main vector Scaphoideus titanus. The possible roles of alternative and secondary FDp plant hosts and vectors have gained interest in terms of better understanding of the FDp ecology and epidemiology. The findings of a survey conducted in the surroundings of three vineyards in the southern Swiss Alps aimed at studying the possible epidemiological role of the FDp secondary vector Orientus ishidae and the FDp host plant Alnus glutinosa are reported. This work demonstrates that O. ishidae is able to complete its biological cycle on A. glutinosa and to acquire FDp and 16SrV phytoplasmas very efficiently with an infection rate of 69% for the nymphal instars and 85% for the imagoes. A high prevalence of the map genotype M50 (map type FD1), which is included in the S. titanus—grapevine epidemiological cycle, was found in O. ishidae and A. glutinosa. Additionally, M12 (map type FD3), M44 and M47 were also sporadically detected. Surprisingly, the grapevines tested during this work were all infected by M54 (map type FD2) only, while the few S. titanus caught in the vineyard canopy were all FDp free. In conclusion, the occurrence of infected common alder stands and O. ishidae nearby vineyards do not seem to play a prominent role in FD epidemics in southern Switzerland. Nevertheless, wild vegetation acts as a reservoir of the FDp inoculum, which may locally trigger a FD emergence if S. titanus populations are established inside vineyards.
    Keywords Alnus glutinosa ; Phytoplasma ; Scaphoideus titanus ; Vitis ; canopy ; entomology ; genotype ; host plants ; inoculum ; instars ; phytoplasmal diseases ; surveys ; vegetation ; vineyards ; Alps region ; Switzerland
    Language English
    Dates of publication 2021-12
    Size p. 1015-1028.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 631360-7
    ISSN 1439-0418 ; 0044-2240 ; 0931-2048
    ISSN (online) 1439-0418
    ISSN 0044-2240 ; 0931-2048
    DOI 10.1111/jen.12933
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 430: Show issues

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  6. Article: Impact of the "Flavescence Dorée" Phytoplasma on Xylem Growth and Anatomical Characteristics in Trunks of 'Chardonnay' Grapevines (

    Rizzoli, Attilio / Jelmini, Luca / Pezzatti, Gianni Boris / Jermini, Mauro / Schumpp, Olivier / Debonneville, Christophe / Marcolin, Enrico / Krebs, Patrik / Conedera, Marco

    Biology

    2022  Volume 11, Issue 7

    Abstract: Flavescence dorée (FD) is a grapevine disease caused by ' ...

    Abstract Flavescence dorée (FD) is a grapevine disease caused by '
    Language English
    Publishing date 2022-06-28
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2661517-4
    ISSN 2079-7737
    ISSN 2079-7737
    DOI 10.3390/biology11070978
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Foliar and root applications of the rare sugar tagatose control powdery mildew in soilless grown cucumbers

    Corneo, Paola E. / Jermini, Mauro / Nadalini, Stefano / Giovannini, Oscar / Nesler, Andrea / Perazzolli, Michele / Pertot, Ilaria

    Crop protection. 2021 Nov., v. 149

    2021  

    Abstract: Powdery mildew is a constant threat to cucumber production in soilless systems requiring the intensive use of chemical fungicides to limit yield losses. However, the toxicity risks for the growers and the food safety issues linked to fungicide residues ... ...

    Abstract Powdery mildew is a constant threat to cucumber production in soilless systems requiring the intensive use of chemical fungicides to limit yield losses. However, the toxicity risks for the growers and the food safety issues linked to fungicide residues represent a major concern for crops with a frequent and extended harvest period, like cucumber, and create an urgent need of eco-friendly alternatives. The objective of this study was to assess the effectiveness of foliar and root applications of the rare sugar tagatose, against naturally occurring powdery mildew (Podosphaera xanthii and Golovinomyces cichoracearum) on cucumber plants grown in a soilless system under commercial-like greenhouse conditions. Foliar and root applications of tagatose reduced powdery mildew severity and incidence under conditions of low severity in untreated plants, but tagatose and the chemical standard strategy lost their effect in the control of powdery mildew when the disease severity was increasing steadily. The combination of sulphur with foliar applications of tagatose effectively reduced powdery mildew under high severity conditions. Overall, under high disease pressure, foliar and root applications of tagatose were more effective than the standard chemical treatment reducing powdery mildew disease incidence and severity. Foliar application of tagatose directly inhibited P. xanthii conidial germination. After root application, tagatose was translocated to the leaves guaranteeing a systemic protection with no accumulation in cucumber fruits. Root applications of tagatose represent a novel strategy for cucumber protection against powdery mildew and reduce fungicide applications.
    Keywords Golovinomyces ; Podosphaera xanthii ; chemical treatment ; conidia ; cucumbers ; disease incidence ; disease severity ; foliar application ; food safety ; fungicides ; germination ; greenhouses ; harvest date ; plant protection ; powdery mildew ; soilless culture ; sulfur ; tagatose ; toxicity
    Language English
    Dates of publication 2021-11
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 786839-x
    ISSN 1873-6904 ; 0261-2194
    ISSN (online) 1873-6904
    ISSN 0261-2194
    DOI 10.1016/j.cropro.2021.105753
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 3919: Show issues

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  8. Article: Impact of the “Flavescence Dorée” Phytoplasma on Xylem Growth and Anatomical Characteristics in Trunks of ‘Chardonnay’ Grapevines (Vitis vinifera)

    Rizzoli, Attilio / Jelmini, Luca / Pezzatti, Gianni Boris / Jermini, Mauro / Schumpp, Olivier / Debonneville, Christophe / Marcolin, Enrico / Krebs, Patrik / Conedera, Marco

    Biology. 2022 June 28, v. 11, no. 7

    2022  

    Abstract: Flavescence dorée (FD) is a grapevine disease caused by ‘Candidatus Phytoplasma vitis’ (FDp), which is epidemically transmitted by the Nearctic leafhopper Scaphoideus titanus. In this study, we applied dendrochronological techniques to analyse the ... ...

    Abstract Flavescence dorée (FD) is a grapevine disease caused by ‘Candidatus Phytoplasma vitis’ (FDp), which is epidemically transmitted by the Nearctic leafhopper Scaphoideus titanus. In this study, we applied dendrochronological techniques to analyse the response to FDp infections in terms of wood ring widths and anatomical structures of the xylem and phloem tissues of the trunk of the susceptible grapevine cultivar ‘Chardonnay.’ As a rule, grapevines are susceptible to water shortage and reduce their growth in diameter in case of summer drought. In the season of the external expression of FD symptoms, however, the ring width reductions are extreme and supersede any drought-induced effects. In addition, the anatomy of the phloem tissue in the year of the FD symptom expression appears heavily disarranged. Moreover, in the most suffering individuals, the xylem formation remains incomplete and mostly limited to the early wood tissue. In conclusion, even though the FD phytoplasma does not inhabit and replicate inside the xylem tissue, our results confirm existing indirect inhibiting effects on the ring growth and the xylem tissue formation in FDp-infected grapevines.
    Keywords Candidatus Phytoplasma vitis ; Nearctic region ; Scaphoideus titanus ; Vitis vinifera ; cultivars ; dendrochronology ; drought ; phloem ; phytoplasmal diseases ; summer ; water shortages ; wood ; xylem
    Language English
    Dates of publication 2022-0628
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2661517-4
    ISSN 2079-7737
    ISSN 2079-7737
    DOI 10.3390/biology11070978
    Database NAL-Catalogue (AGRICOLA)

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  9. Thesis ; Online: Quantification of the influence of plasmopara viticola on growth, yield and plant response for the development of an integrated control strategy on vitis vinifera (CV. Merlot)

    Jermini, Mauro

    2010  

    Keywords INTEGRIERTER PFLANZENSCHUTZ ; INTEGRATED PLANT PROTECTION ; MERLOT (VITICULTURE) ; PLASMOPARA (PHYTOPATHOLOGIE) ; KULTURPFLANZENWACHSTUM ; PLASMOPARA (PLANT PATHOLOGY) ; ERTRAGSPHYSIOLOGIE (KULTURPFLANZEN) ; VITICULTURE + VINEYARDS ; CROP YIELD PHYSIOLOGY (CROP PLANTS) ; BLÄTTER (PFLANZENPHYSIOLOGIE) ; MERLOT (WEINBAU) ; LEAVES (PLANT PHYSIOLOGY) ; CROP GROWTH ; WEINBAU + REBBAU + REBBERGE ; info:eu-repo/classification/ddc/630 ; Agriculture
    Language English
    Publisher ETH-Zürich
    Publishing country ch
    Document type Thesis ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article: Spatial Distribution and Sampling Plans for Grapevine Plant Canopy-Inhabiting Scaphoideus titanus (Hemiptera: Cicadellidae) Nymphs.

    Rigamonti, Ivo E / Brambilla, Carla / Colleoni, Emanuele / Jermini, Mauro / Trivellone, Valeria / Baumgärtner, Johann

    Journal of economic entomology

    2016  Volume 109, Issue 2, Page(s) 920–929

    Abstract: The paper deals with the study of the spatial distribution and the design of sampling plans for estimating nymph densities of the grape leafhopper Scaphoideus titanus Ball in vine plant canopies. In a reference vineyard sampled for model parameterization, ...

    Abstract The paper deals with the study of the spatial distribution and the design of sampling plans for estimating nymph densities of the grape leafhopper Scaphoideus titanus Ball in vine plant canopies. In a reference vineyard sampled for model parameterization, leaf samples were repeatedly taken according to a multistage, stratified, random sampling procedure, and data were subjected to an ANOVA. There were no significant differences in density neither among the strata within the vineyard nor between the two strata with basal and apical leaves. The significant differences between densities on trunk and productive shoots led to the adoption of two-stage (leaves and plants) and three-stage (leaves, shoots, and plants) sampling plans for trunk shoots- and productive shoots-inhabiting individuals, respectively. The mean crowding to mean relationship used to analyze the nymphs spatial distribution revealed aggregated distributions. In both the enumerative and the sequential enumerative sampling plans, the number of leaves of trunk shoots, and of leaves and shoots of productive shoots, was kept constant while the number of plants varied. In additional vineyards data were collected and used to test the applicability of the distribution model and the sampling plans. The tests confirmed the applicability 1) of the mean crowding to mean regression model on the plant and leaf stages for representing trunk shoot-inhabiting distributions, and on the plant, shoot, and leaf stages for productive shoot-inhabiting nymphs, 2) of the enumerative sampling plan, and 3) of the sequential enumerative sampling plan. In general, sequential enumerative sampling was more cost efficient than enumerative sampling.
    MeSH term(s) Animals ; Demography ; Hemiptera ; Nymph ; Vitis
    Language English
    Publishing date 2016-04
    Publishing country England
    Document type Journal Article
    ZDB-ID 3031-4
    ISSN 0022-0493
    ISSN 0022-0493
    DOI 10.1093/jee/tov382
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
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