First report of <i>Tomato leaf curl New Delhi virus</i> affecting zucchini squash in an important horticultural area of southern Italy

Panno, Stefano; Iacono, Giuseppe; Davino, M.; Marchione, S.; Zappardo, V.; Bella, P.; Tomassoli, L.; Accotto, G. P.; Davino, Salvatore

doi:10.5197/j.2044-0588.2016.033.006

Cited by 68 publications

(63 citation statements)

References 6 publications

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“…This group of isolates differed at the strain level, and the name “Spain (ES)” was proposed for the strain [16,43]. Isolates closely associated with this strain also have been reported to cause severe epidemics in cucurbits in Tunisia and Italy [17,19,20,21], suggesting the emergence of the ES strain in the western Mediterranean Basin. Here, we demonstrated that in the ToLCNDV Spanish epidemics, the population of ToLCNDV isolates involved was quite uniform genetically, probably the result of a founder effect associated with a population bottleneck during the transmission of this virus to a new area [44,45,46].…”

Section: Discussionmentioning

confidence: 99%

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A Novel Strain of Tomato Leaf Curl New Delhi Virus Has Spread to the Mediterranean Basin

Fortes

Sánchez-Campos

Fiallo‐Olivé

et al. 2016

Viruses

112

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Tomato leaf curl New Delhi virus (ToLCNDV) is a whitefly-transmitted bipartite begomovirus (genus Begomovirus, family Geminiviridae) that causes damage to multiple cultivated plant species mainly belonging to the Solanaceae and Cucurbitaceae families. ToLCNDV was limited to Asian countries until 2012, when it was first reported in Spain, causing severe epidemics in cucurbit crops. Here, we show that a genetically-uniform ToLCNDV population is present in Spain, compatible with a recent introduction. Analyses of ToLCNDV isolates reported from other parts of the world indicated that this virus has a highly heterogeneous population genetically with no evident geographical, plant host or year-based phylogenetic groups observed. Isolates emerging in Spain belong to a strain that seems to have evolved by recombination. Isolates of this strain seem adapted to infecting cucurbits, but poorly infect tomatoes.

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Section: Discussionmentioning

confidence: 99%

“…Recently, this virus has been detected infecting tomato crops in the same area [19]. Moreover, further spread has occurred with recent reports of ToLCNDV in Tunisia infecting cucurbits (melon, cucumber and zucchini squash) and in Italy infecting zucchini squash, with isolates closely related to those detected in Spain [20,21]. …”

Section: Introductionmentioning

confidence: 99%

A Novel Strain of Tomato Leaf Curl New Delhi Virus Has Spread to the Mediterranean Basin

Fortes

Sánchez-Campos

Fiallo‐Olivé

et al. 2016

Viruses

112

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“…The aim of this study was to evaluate the dispersion and genetic diversity of ToLCNDV in Italy, following outbreaks occurring in different regions in 2015 and 2016 (Luigi et al ., ; Panno et al ., ; Bertin et al ., ). Further, the present work reports a genetic analysis of this begomovirus with the aim of better understanding its evolutionary dynamics and field epidemiology.…”

Section: Introductionmentioning

confidence: 98%

Emergence of tomato leaf curl New Delhi virus in Italy: estimation of incidence and genetic diversity

et al. 2019

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Tomato leaf curl New Delhi virus (ToLCNDV) is a bipartite begomovirus (family Geminiviridae) identified for the first time in 1995 in Asia, from where it spread into several countries of the Mediterranean basin. ToLCNDV was found in Spain in 2012, and subsequently in Tunisia and Italy. The first outbreak in Italy occurred at the end of 2015 in Trapani province (Sicily) on zucchini squashes. Then in 2016, ToLCNDV was found in infected zucchini plants in Campania, Lazio and Sardinia regions, and in 2017 in Calabria. This study addressed the dispersion and genetic diversity of ToLCNDV isolates in Italy. A total of 1400 plants were analysed. Phylogenetic analysis showed low variability among the Italian isolates, probably as a consequence of the recent introduction and rapid spread of this virus in Italy. Two statistically significant clusters were reported: one grouping only Italian isolates and the other grouping Italian, Spanish, Tunisian and Moroccan isolates. Furthermore, the highest incidence of ToLCNDV was observed in Sicily, although the disease also appears to be critical in other Italian regions. In this work, a high efficiency of ToLCNDV mechanical transmission into Cucurbita pepo, Cucumis melo inodorus and Cucumis melo cantalupensis has been demonstrated. The rapid spread of ToLCNDV in the Mediterranean basin represents a threat for horticultural production, thus it is very important to develop suitable crop management practices, applying genetic resistance strategies and more restrictive phytosanitary measures.

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“…Unfortunately, over the past four years, cucurbit production has been reduced in many countries by infection with the bipartite begomovirus Tomato leaf curl New Delhi virus (ToLCNDV). The virus was first described in plants from Asia, but recently it has also been reported from cucurbits in the Mediterranean region, namely Spain (Juárez et al, 2014), Tunisia (Mnari-Hattab et al, 2015) and Italy (Panno et al, 2016). Disease symptoms resembling those described from Spain and Italy and attributed to ToLCNDV were observed in zucchini (Cucurbita pepo) crops growing in the Agadir and Taroudant regions of Morocco in 2017.The incidence of disease was significant, with severe yellow mosaic symptoms accompanied by leaf curling and roughness of the fruit skin (Fig.…”

Section: Figurementioning

confidence: 99%

First report of Tomato Leaf Curl New Delhi virus in Morocco

Radouane¹,

Tahiri²,

Ghadraoui

et al. 2018

New Disease Reports

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First report of Tomato leaf curl New Delhi virus affecting zucchini squash in an important horticultural area of southern Italy

Cited by 68 publications

References 6 publications

A Novel Strain of Tomato Leaf Curl New Delhi Virus Has Spread to the Mediterranean Basin

A Novel Strain of Tomato Leaf Curl New Delhi Virus Has Spread to the Mediterranean Basin

Emergence of tomato leaf curl New Delhi virus in Italy: estimation of incidence and genetic diversity

First report of Tomato Leaf Curl New Delhi virus in Morocco

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