Distribution of races and virulence factors of Bremia lactucae in the main lettuce production area in Brazil

Marín, Manuel; Franco, Carolina Andrade; Smilde, Diederik; Panizzi, Rita C.; Braz, Leila Trevisan

doi:10.1007/s42161-019-00444-x

Cited by 6 publications

(9 citation statements)

References 27 publications

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“…Additionally, eight isolates representing the most frequent vphenotypes that occurred in Brazil were selected from the collection of B. lactucae isolates stored by NEOM (Unesp-FCAV) (Marin et al, 2020). These isolates were collected during 2015 and 2016 from Rio Grande do Sul and São Paulo, which represent the states with the highest incidence of downy mildew.…”

Section: Collection and Maintenance Of Isolatesmentioning

confidence: 99%

“…Isolates were collected from a single-leaf-lesion and cultured according to the procedures described by Marin et al (2020). All preparations of suspensions and inoculations were performed on a laminar air flow bench to avoid cross-contamination.…”

Section: Collection and Maintenance Of Isolatesmentioning

confidence: 99%

“…The differential set genotypes and their Dm genes and R-factors are shown in Table 1. Inoculation of the isolates was performed according to Michelmore and Crute (1982), modified by Marin et al (2020), with 5 × 10 4 sporangia/ml. The virulence assessment was repeated once.…”

Section: Monitoring Of B Lactucae V-phenotypesmentioning

confidence: 99%

mentioning

confidence: 99%

“…The frequency of virulence and cumulative v-factors in Brazilian isolates of B. lactucae has been investigated since 2003 at São Paulo State University (Braz et al, 2016;Marin et al, 2020;Tobar-Tosse et al, 2017). During monitoring from 2003 to 2015, 17 v-phenotypes have been characterized in São Paulo state (Marin et al, 2020). New monitoring carried out during 2015 and 2016 revealed 27 v-phenotypes among samples collected in São Paulo, Paraná, and Rio Grande do Sul (Franco et al, 2021).…”

mentioning

confidence: 99%

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Monitoring virulence and sexual compatibility in Brazilian Bremia lactucae populations

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Plant Pathology

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Lettuce (Lactuca sativa) is among the most widely cultivated leafy vegetables. Its production is in continuous expansion, with an increase of 491,000 tonnes, on average, in recent years (FAOSTAT, 2020). However, Bremia lactucae, the causal agent of lettuce downy mildew (LDM), considered one of the main leaf diseases of lettuce in the world, can infect any stage of plant development and cause extensive production losses (Spring et al., 2018;Van Hese et al., 2016).In Brazil, losses due LDM can reach up to 70% under conducive weather (author's unpublished observations). Disease symptoms include development of light green to yellow areas on the upper side

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Section: Collection and Maintenance Of Isolatesmentioning

confidence: 99%

Section: Collection and Maintenance Of Isolatesmentioning

confidence: 99%