Potato late blight

Mizubuti, Eduardo S. G.; Fry, William E.

doi:10.1007/1-4020-4581-6_17

Cited by 27 publications

(22 citation statements)

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“…Throughout the evaluation of late blight severity among the populations under study, the temperatures ranged from 13.8°C to 21.2°C (mean 16.7°C) and Rh from 67% to 93% (mean 76%), which are considered adequate for the development of late blight (Mizubuti and Fry, 2006).…”

Section: Plants Crosses and Field Conditionsmentioning

confidence: 99%

“…Large amounts of resources are used to reduce risk of damage caused by P. infestans, with approximately one billion dollars per year being spent on the control of late blight control worldwide (Mizubuti and Fry, 2006). In Brazil, an estimated 20% of the production costs of tomato crops are due to the chemical control of late blight (Mizubuti, 2005).…”

Section: Introductionmentioning

confidence: 99%

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Inheritance of resistance to Phytophthora infestans (Peronosporales, Pythiaceae) in a new source of resistance in tomato (Solanum sp. (formerly Lycopersicon sp.), Solanales, Solanaceae)

et al. 2008

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In Brazil, no commercial tomato (Solanum lycopersicum L. formerly Lycopersicon esculentum Mill.) varieties are available which are resistant to the late blight, one of the most important tomato diseases, produced by the phytopathogenic oomycete Phytophthora infestans. The wild tomato (Solanum habrochaites Knapp & Spooner, formerly Lycopersicon hirsutum Dunal) shows resistance to P. infestans, because of which we investigated an interspecific cross between S. lycopersicum cv. Santa Clara and S. habrochaites accession BGH 6902 maintained at the Horticultural Germplasm Bank at the Federal University of Viçosa (Banco de Germoplasma de Horticultura (BGH), Universidade Federal de Viçosa (UFV), Viçosa, Minas Gerais, Brazil) The genitors, F 1 , F 2 , BC 1 and BC 2 were used to study the inheritance of resistance to P. infestans and to estimate the genetic parameters associated with resistance. Analysis of the area under the disease progress curve (AUDPC) indicated that inheritance is polygenic and that dominance controls character, whereas mean analysis showed that the additive effect was the most important. Although the character presents variability, the heritability is low which generates the need to better control the environment to obtain success with the selection.

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Section: Plants Crosses and Field Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Inheritance of resistance to Phytophthora infestans (Peronosporales, Pythiaceae) in a new source of resistance in tomato (Solanum sp. (formerly Lycopersicon sp.), Solanales, Solanaceae)

et al. 2008

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“…One form, Phytophthora infestans, has significantly influenced history. As the causative agent of the potato late blight this organism was responsible for the famous potato famine in Ireland (1845Ireland ( -1852, which resulted in a major decline of the population through starvation and emigration (Gregory 1983, Mizubuti andFry 2006). Molecular clock estimates have been used to suggest that the first Peronosporomycetes occurred on Earth during the early Neoproterozoic, 1 000 000 000-524 000 000 y ago (Bhattacharya et al 2009); it also has been speculated that Peronosporomycetes might have been among the first eukaryotes on Earth (Pirozynski 1976a, b).…”

Section: Introductionmentioning

confidence: 99%

The fossil record of the Peronosporomycetes (Oomycota)

2011

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Evidence of fossil Peronosporomycetes has been slow to accumulate. In this review various fossils historically assigned to the Peronosporomycetes are discussed briefly and an explanation is provided as to why the fossil record of this group has remained inconsistent. In recent years there have been several new reports of fossil peronosporomycetes based on structurally preserved oogonium-antheridium complexes from Devonian and Carboniferous rocks that demonstrate the existence of these organisms as fossils and refute the long-standing assumption that they are too delicate to be preserved. Among these are several types characterized by oogonial surface ornamentation patterns not seen in any modern members of the group. To date at least three groups of fossil vascular plants (i.e. lycophytes, ferns and seed ferns) are known to host peronosporomycetes as endophytes; however only one form has been identified as a parasite.

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“…Phytophthora infestans is known to move locally and regionally by wind-dispersal [55] and both regionally and nationally through the shipment of infected seed tubers and tomato transplants [13]. Through the analyses of the US-8, US-11, and US-24 NJ trees we found examples of isolates collected from the same state during the same year that grouped together, like US-24 isolates from 2009 (ND), 2013 (OR), and 2014 (OR).…”

Section: Discussionmentioning

confidence: 99%

“…Through the analyses of the US-8, US-11, and US-24 NJ trees we found examples of isolates collected from the same state during the same year that grouped together, like US-24 isolates from 2009 (ND), 2013 (OR), and 2014 (OR). The ND isolates were both from Grand Forks, and the OR isolates were from Philomath, Corvallis, and Lebanon which are less than 50 miles apart, which is a feasible distance for an individual to spread by wind in a single season [18,55]. However, the grouping of these isolates could also be explained by the transport of common inoculum on infected plant material to each collection site.…”

Section: Discussionmentioning

confidence: 99%

Genetic Variation within Clonal Lineages of Phytophthora infestans Revealed through Genotyping-By-Sequencing, and Implications for Late Blight Epidemiology

et al. 2016

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Genotyping-by-sequencing (GBS) was performed on 257 Phytophthora infestans isolates belonging to four clonal lineages to study within-lineage diversity. The four lineages used in the study were US-8 (n = 28), US-11 (n = 27), US-23 (n = 166), and US-24 (n = 36), with isolates originating from 23 of the United States and Ontario, Canada. The majority of isolates were collected between 2010 and 2014 (94%), with the remaining isolates collected from 1994 to 2009, and 2015. Between 3,774 and 5,070 single-nucleotide polymorphisms (SNPs) were identified within each lineage and were used to investigate relationships among individuals. K-means hierarchical clustering revealed three clusters within lineage US-23, with US-23 isolates clustering more by collection year than by geographic origin. K-means hierarchical clustering did not reveal significant clustering within the smaller US-8, US-11, and US-24 data sets. Neighbor-joining (NJ) trees were also constructed for each lineage. All four NJ trees revealed evidence for pathogen dispersal and overwintering within regions, as well as long-distance pathogen transport across regions. In the US-23 NJ tree, grouping by year was more prominent than grouping by region, which indicates the importance of long-distance pathogen transport as a source of initial late blight inoculum. Our results support previous studies that found significant genetic diversity within clonal lineages of P. infestans and show that GBS offers sufficiently high resolution to detect sub-structuring within clonal populations.

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Potato late blight

Cited by 27 publications

References 0 publications

Inheritance of resistance to Phytophthora infestans (Peronosporales, Pythiaceae) in a new source of resistance in tomato (Solanum sp. (formerly Lycopersicon sp.), Solanales, Solanaceae)

Inheritance of resistance to Phytophthora infestans (Peronosporales, Pythiaceae) in a new source of resistance in tomato (Solanum sp. (formerly Lycopersicon sp.), Solanales, Solanaceae)

The fossil record of the Peronosporomycetes (Oomycota)

Genetic Variation within Clonal Lineages of Phytophthora infestans Revealed through Genotyping-By-Sequencing, and Implications for Late Blight Epidemiology

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