Seed transmission of Plectosphaerella cucumerina, causal agent of leaf spot of Diplotaxis tenuifolia in Italy

Gilardi, G.; Garibaldi, A.; Gullino, M. L.

doi:10.1007/s12600-013-0302-4

Cited by 9 publications

(7 citation statements)

References 11 publications

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“…For instance, in the case of Plectosphaerella cucumerina , a percentage of infected seeds as low as 0.15% may be important in disseminating the pathogen in wild rocket crops (Gilardi et al. 2013b). Seed infections also contributed to the introduction in Italy of the Fusarium wilt agents for the first time observed on both the rocket species (Garibaldi et al.…”

Section: Resultsmentioning

confidence: 99%

“…At the usual sowing rate for this crop of 2-g seeds per m 2 corresponding to 1000 seeds/m 2 for cultivated and 10 000 seeds/m 2 for wild rocket, also, a low percentage of contaminated seeds are enough to favour the spread of the disease, as already observed with other pathogens. For instance, in the case of Plectosphaerella cucumerina, a percentage of infected seeds as low as 0.15% may be important in disseminating the pathogen in wild rocket crops (Gilardi et al 2013b). Seed infections also contributed to the introduction in Italy of the Fusarium wilt agents for the first time observed on both the rocket species (Garibaldi et al 2004).…”

Section: Resultsmentioning

confidence: 99%

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Occurrence of Alternaria japonica on Seeds of Wild and Cultivated Rocket

Gilardi

Demarchi

Ortu

et al. 2014

Journal of Phytopathology

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In vitro evaluation was carried out on seed samples of wild and cultivated rocket cultivars, most frequently grown in Italy, and obtained from farms affected by the leaf spot caused by Alternaria japonica in Piedmont and Lombardy during the fall of 2010. Twelve seed samples were collected and assayed for the presence of A. japonica. The pathogen was isolated only from not disinfected seeds. Among the two seed samples of cultivated rocket (Eruca vesicaria), only one was infected by A. japonica at a level of one infected seed out of 800. Four out of ten samples of wild (Diplotaxis tenuifolia) rocket seeds were contaminated by A. japonica with the highest level of infection detected in a single sample of 3 out of 800. All tested isolates of A. japonica obtained from seeds were pathogenic on both wild and cultivated rocket.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Occurrence of Alternaria japonica on Seeds of Wild and Cultivated Rocket

Gilardi

Demarchi

Ortu

et al. 2014

Journal of Phytopathology

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“…Certainly, the occurrence of the pathogen on seeds (Gilardi et al, 2013b) complicates disease management and favours the spread of the pathogen.…”

Section: Discussionmentioning

confidence: 99%

“…The occurrence of P. cucumerina on wild rocket seeds is one of the causes of the spread of the pathogen to new cultivation areas (Gilardi et al, 2013b), further complicating disease management.…”

Section: Introductionmentioning

confidence: 99%

Management of leaf spot of wild rocket using fungicides, resistance inducers and a biocontrol agent, under greenhouse conditions

et al. 2015

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a b s t r a c tA new leaf spot of wild rocket (Diplotaxis tenuifolia), caused by the seed transmitted pathogen Plectosphaerella cucumerina, is causing severe losses on this crop. Disease management is complicated, as few chemicals are registered for use on rocket. Four experimental trials using fungicides, resistance inducers, and a biocontrol agent against P. cucumerina were carried out on two cultivars of wild rocket, under greenhouse conditions, in order to evaluate the efficacy of the different treatments. In the presence of a disease severity ranging from 5.8 to 26.6 in the control plots of wild rocket (cvs Grazia and Rucola selvatica), one foliar application of azoxystrobin, boscalid alone or combined with pyraclostrobin provided a significant reduction in disease severity, compared with the untreated control, at values ranging between 48.5% and 84.8%. The phosphites-based products and acibenzolar-S-methyl provided the most constant results when applied in three treatments, with a disease severity reduction ranging between 34%e82% and 45%e70.3%, respectively. The highest disease reduction in disease severity was observed by using two sprays of mandipropamid at 18.7 mL/100 L with an efficacy ranging between 64% and 92%. Among the copper-based products, the most effective treatments compared with the untreated control plants were the copper hydroxide and terpenic alcohols. Thiram provided a significant reduction in disease severity compared with the untreated control plants at values ranging from 53% to 78%; however, the plants generally did not improve in biomass compared with the untreated control. The most effective treatment in terms of disease severity reduction did not always provide a better response in plant biomass. Streptomyces griseoviridis provided only a partial, but consistent, reduction of leaf spot on wild rocket when applied in three treatments at seven day-intervals, with results statistically different from those observed in the untreated control plants. Considering the difficulty in reaching a complete disease management level against P. cucumerina, an integrated approach should be considered.

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“…P. cucumerina je opisano kao uzro nik truljenja korena drugih hortikulturnih kultura (Carlucci et al, 2012;Palm et al, 1995). Ovaj patogen se može prenositi semenom (Gilardi et al, 2013a).…”

Section: Pseudomikoze I Mikoze Rukoleunclassified

Pseudomycosis and mycosis of rocket plant (arugula)

Panić¹,

Stojšin²,

Budakov³

et al. 2021

Biljni lekar

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As plant pathogens cause significant yield losses in all crops, much effort is put into diseases prevention and control. The importance of rocket has increased in many countries, and also in Serbia interest in cultivation this species is raising. Rocket production is threatened by various pathogenic microorganisms, fung-like, fungi and bacteria being among the most significant ones. For successful rocket production, knowledge on possible pathogenic causers of the diseases is of high importance. In this paper, a review of the literature of diseases caused by fungi and fungi-like organisms of rocket known so far, is presented.

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Seed transmission of Plectosphaerella cucumerina, causal agent of leaf spot of Diplotaxis tenuifolia in Italy

Abstract: Eight seed samples of wild rocket (Diplotaxis tenuifolia) obtained from commercial seed 9 lots used for sowing by farms severely affected by Plectosphaerella cucumerina, were assayed for 10 the presence of the pathogen. Isolations were carried out on subsamples of seeds (400)

Cited by 9 publications

References 11 publications

Occurrence of Alternaria japonica on Seeds of Wild and Cultivated Rocket

Occurrence of Alternaria japonica on Seeds of Wild and Cultivated Rocket

Management of leaf spot of wild rocket using fungicides, resistance inducers and a biocontrol agent, under greenhouse conditions

Pseudomycosis and mycosis of rocket plant (arugula)

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