Preliminary Molecular Survey of the Possible Presence of Xylella fastidiosa in the Upper Ionian Coasts of Calabria, Italy, through the Capture and Analysis of Its Main Vector Insects

Lombardo, Luca; Rizzo, Pierluigi; Novellis, Carmine; Vizzarri, Veronica

doi:10.3390/insects12050446

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…The occurrence and distribution of these vectors was assessed at 19 sampling areas in Calabria, neighbouring the main outbreak area of subsp. Pauca in olive in Apulia, from August to October 2020 (Lombardo et al 2021). All 563 individual specimens tested negative for the bacterium.…”

Section: Xylella Fastidiosa and Vectorsmentioning

confidence: 99%

A Synoptic Review of Plant Disease Epidemics and Outbreaks Published in 2021

Jeger¹,

Fielder²,

Beale³

et al. 2022

Preprint

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A synoptic review of plant disease epidemics and outbreaks was made using two complementary approaches. The first approach involved reviewing scientific literature published in 2021, in which quantitative data related to new plant disease epidemics or outbreaks had been obtained via surveys or similar methodologies. The second approach involved retrieving new pest presence records added to the CABI Distribution Database in 2021. The literature review for the first approach had two stages. Stage 1 aimed to identify publications on plant diseases caused by pathogen taxonomic groups and led to retrieval of 99 core articles describing studies in 62 categories (pathogen species or species complexes) across more than 40 host species in 6 continents. In Stage 2, the core articles were augmented with further articles providing more context and information for the pathogen species identified in Stage 1. When both sets of articles were combined, the pathogen species with more than 5 articles were: Bursephalenchus xylophilus, Candidatus Liberibacter asiaticus, cassava mosaic viruses, citrus tristeza virus, Erwinia amylovora, Fusarium spp. complexes, Fusarium oxysporum f.sp cubense, Magnaporthe oryzae, maize lethal necrosis co-infecting viruses, Meloidogyne spp. complexes, Pseudomonas syringae pvs, Puccinia striiformis f.sp tritici, Xylella fastidiosa, and Zymoseptoria tritici. The automated search of the CABI Distribution Database led to 617 new distribution records from 283 plant pathogens in 2021 and was followed by manual review of all pathogens with more than 4 new records, to identify confirmed first reports in a new location. A total of 15 pathogens was identified: apple hammerhead viroid, apple rubbery wood viruses, Aphelenchoides besseyi, Biscogniauxia mediterranea, Ca. Liberibacter asiaticus, citrus tristeza virus, Colletotrichum siamense, cucurbit chlorotic yellows virus, Erwinia rhapontici, Erysiphe corylacearum, Fusarium oxysporum f.sp. cubense Tropical Race 4, Globodera rostochiensis, Nothophoma quercina, potato spindle tuber viroid, and tomato brown rugose fruit virus. Although 3 very important pathogens – Ca. Liberibacter asiaticus, citrus tristeza virus and Fusarium oxysporum f.sp cubense – were represented in the results of both approaches, in general the two approaches revealed distinct sets of plant disease outbreaks and new records, with little overlap in the results.

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Section: Xylella Fastidiosa and Vectorsmentioning

confidence: 99%

A Synoptic Review of Plant Disease Epidemics and Outbreaks Published in 2021

Jeger¹,

Fielder²,

Beale³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Researchers from Italy, France and the USA have attributed the arrival in Italy of Xf bacterium, in 2008, to a coffee plant probably coming from Costa Rica, and then adapted to infect the olive trees in Apulia [ 44 ]. The spread of Xf is rapid, difficult to halt, and seems to be directed to other regions in the south of Italy, including Calabria [ 45 ]. In this review, we summarize the problems related to Xf outbreak, particularly in Italy, considering the bacterium itself as the vector responsible for its transmission and suggesting the potential use of TDZ, which is endowed with antimicrobial and cytokinin-like activity, as well.…”

Section: Introductionmentioning

confidence: 99%

Thidiazuron: New Trends and Future Perspectives to Fight Xylella fastidiosa in Olive Trees

et al. 2022

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These days, most of our attention has been focused on the COVID-19 pandemic, and we have often neglected what is happening in the environment. For instance, the bacterium Xylella fastidiosa re-emerged as a plant pathogen of global importance in 2013 when it was first associated with an olive tree disease epidemic in Italy, called Olive Quick Decline Syndrome (OQDS), specifically caused by X. fastidiosa subspecies pauca ST53, which affects the Salento olive trees (Apulia, South-East Italy). This bacterium, transmitted by the insect Philaenus spumarius, is negatively reshaping the Salento landscape and has had a very high impact in the production of olives, leading to an increase of olive oil prices, thus new studies to curb this bacterium are urgently needed. Thidiazuron (TDZ), a diphenylurea (N-phenyl-1,2,3-thiadiazol-5-yl urea), has gained considerable attention in recent decades due to its efficient role in plant cell and tissue culture, being the most suitable growth regulator for rapid and effective plant production in vitro. Its biological activity against bacteria, fungi and biofilms has also been described, and the use of this low-cost compound to fight OQDS may be an intriguing idea.

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