Grapevine Yellows Diseases and Their Phytoplasma Agents

Dermastia, Marina; Bertaccini, Assunta; Constable, Fiona; Mehle, N.

doi:10.1007/978-3-319-50648-7

Cited by 31 publications

(28 citation statements)

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“…However, under specific environmental conditions and with specific insect vectors, phytoplasmas can change the plant host and cause disease. Therefore, several phytoplasmas have been discovered to be pathogens of economically important crops (Bertaccini et al, 2014; Dermastia et al, 2017). With the particular economic importance of phytoplasma diseases, most of available data have been collected from infected crops and plants with a horticultural value, and not by more common ways that use model plants to study their interactions with microbes.…”

Section: Introductionmentioning

confidence: 99%

Plant Hormones in Phytoplasma Infected Plants

Dermastia

2019

Front. Plant Sci.

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Phytoplasmas are bacterial plant pathogens that need a plant host and an insect vector for their spread and survival. In plants, the physiological responses that phytoplasmas trigger result in symptom development through effects on hormonal, nutritional, and stress signaling pathways, and the interactions between these. In this review, recent advances on the involvement of plant hormones together with their known and deduced roles in plants infected with phytoplasmas are discussed. Several studies have directly, or in many cases indirectly, addressed plant hormone systems in phytoplasma-infected plants. These have provided accumulating evidence that phytoplasmas extensively affect plant hormone pathways. Phytoplasmas thus, with disturbing complex plant hormone networks, suppress plant immunity and modify plant structure, while optimizing their nutrient acquisition and facilitating their colonization of the plants, and their dissemination among plants by their insect vectors.

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Section: Introductionmentioning

confidence: 99%

Plant Hormones in Phytoplasma Infected Plants

Dermastia

2019

Front. Plant Sci.

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“…In addition, the quality of wine is decreased by the high acid and low sugar contents of the infected clusters. [ 19 ] Management of these diseases has mainly focused on the use of healthy plant material, removal of infected plants, and control of insect vectors and phytoplasma alternative host plant species. As all these methods present some drawbacks, many efforts are devoted to the development of alternative control strategies.…”

Section: Introductionmentioning

confidence: 99%

The use of plasma‐activated water in viticulture: Induction of resistance and agronomic performance in greenhouse and open field

Laurita

Contaldo

Zambon

et al. 2020

Plasma Processes & Polymers

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In this study, two different cold atmospheric‐pressure plasmas are used for the production of plasma‐activated water (PAW). To evaluate the effectiveness of PAW as a possible means to control plant diseases, grapevines in an open field and a greenhouse are treated, evaluating qualitative and quantitative yield parameters, phytoplasma presence, and gene expression. The results show the capability of PAW to enhance plant defense mechanisms and, as demonstrated in the field trials, confirm its ability to improve the health status of the treated plants.

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“…Since the vector of 'Ca. P. fragariae' is not known and several possible vectors may be involved in transmission of FD phytoplasma (Chuche and Thiéry 2009;Dermastia et al 2017;Filippin et al 2009;Lessio et al 2016;Maixner et al 2000;Mehle et al 2010), further studies are needed to determine the role of vectors in the phytoplasma epidemiology of hazelnuts.…”

Section: Discussionmentioning

confidence: 99%

Phytoplasmas associated with declining of hazelnut (Corylus avellana) in Slovenia

et al. 2019

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Hazelnut (Corylus avellana) is cultivated on 118 ha and ranks eighth in Slovenian fruit growing production, representing 2.8% of the total area of fruit plantations in the country. However, decline of some of the trees appeared in 2012 in two plantations located in eastern Slovenia. Together these orchards cover 5 ha, with around 1600 trees planted 12 to 15 years ago. By October 2018,~12% of these trees had died, and an additional 12% showed decay symptoms. The dead and dying trees were scattered throughout both orchards, with no apparent pattern. The most affected cultivar was 'Istrska dolgoplodna leska'. Using molecular diagnostic methods, we showed infection of symptomatic trees with three unrelated phytoplasmas: 'Candidatus Phytoplasma fragariae', of the 16SrXII-E phytoplasma subgroup, and phytoplasma of the 16SrV and 16SrIX groups. In 2018, the presence of 'Ca. P. fragariae' and/or phytoplasma of 16SrV group were confirmed in decayed hazelnut trees in eastern, northeastern , central, southeastern and western Slovenia. 'Ca. P. fragariae' has also been detected in a forest in southwestern Slovenia, for Acer campestre, Carpinus betulus, Crataegus laevigata, Fraxinus ornus and Quercus petraea. All infected forest trees showed unusual dense proliferation of sprouts from roots and/or trunks. Molecular characterisations of partial 16S rRNA, secY, map and ribosomal protein genetic locus of hazelnut 16SrV phytoplasma isolates show that they are identical to isolates that can cause grapevine flavescence dorée disease. Here, the results of our recent study and the open questions on this burning issue for hazelnut production are presented.

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Grapevine Yellows Diseases and Their Phytoplasma Agents

Cited by 31 publications

References 0 publications

Plant Hormones in Phytoplasma Infected Plants

Plant Hormones in Phytoplasma Infected Plants

The use of plasma‐activated water in viticulture: Induction of resistance and agronomic performance in greenhouse and open field

Phytoplasmas associated with declining of hazelnut (Corylus avellana) in Slovenia

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