Patterns of virulence variation in the interaction between Lactuca spp. and lettuce powdery mildew (Golovinomyces cichoracearum)

Lebeda, A.; Mieslerová, B.; Petrželová, I.; Korbelová, P.; Česneková, E.

doi:10.1016/j.funeco.2012.03.005

Cited by 16 publications

(20 citation statements)

References 41 publications

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“…These studies included: the eco-geographical distribution (Beharav et al , 2010aLebeda et al 2009aLebeda et al , 2012a, morphological variation (Lebeda et al 2007bNovotná et al 2011;Křístková et al 2014), genetic polymorphism (Kitner et al 2008;Lebeda et al 2009aLebeda et al , 2014, downy mildew resistance Beharav et al 2014;Lebeda et al 2014), powdery mildew resistance (Lebeda et al 2012c, and variation in the content of biologically active secondary lactones (Beharav et al 2010b;Stojakowska et al 2013). Recently obtained results strongly support that wild Lactuca species, closely related to L. sativa, could be the source of large genetic variation for breeding programs (Lebeda et al 2009a(Lebeda et al , b, 2014.…”

Section: Introductionmentioning

confidence: 99%

Genetic structure and diversity in natural populations of three predominantly self-pollinating wild Lactuca species in Israel

Kitner

Majeský

Křístková

et al. 2014

Genet Resour Crop Evol

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It is important to optimize strategies for collecting wild germplasm from their natural habitats for the successful conservation of plant genetic resources. We studied the population structure of three predominantly self-pollinating wild Lactuca species (Lactuca serriola, L. saligna, and L. aculeata). Seeds for this study were collected from individual plants in northern Israel, along a line transect, and two populations per each Lactuca species. The distance between neighboring plants sampled for seeds varied from 1.5 to 37 m. The transect length at single sites ranged from 47.2 to 151.8 m. The taxonomic status of 67 individual plants was morphologically validated during greenhouse multiplication. Both genetic structure and diversity were analyzed by using 11 EST-SSR loci and 230 AFLP markers. Relatively low genetic diversity values were observed, increasing in the following order: L. aculeata \ L. serriola \ L. saligna. Network analysis clearly separated samples according to their taxonomic determination; also reflecting the gene diversity as well as the genetic distance values among the three species. Nevertheless, given the predominantly selfing character of these species, populations were not uniform (genetically and morphologically). It seems that overall genetic variation in a population increases at its periphery, due to the presence of plants with ''non-indigenous'' alleles, which are most likely coming from migration and subsequent interpopulation or interspecific hybridization. Mantel tests generally indicated a positive association between genetic distance and micro-geographical distance of a particular population, primarily due to the ''outlier'' samples collected at a population's periphery.

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Section: Introductionmentioning

confidence: 99%

Genetic structure and diversity in natural populations of three predominantly self-pollinating wild Lactuca species in Israel

Kitner

Majeský

Křístková

et al. 2014

Genet Resour Crop Evol

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“…Collected isolates of both pathogens were mostly limited to the same host plant species or genus from which they were collected. The only exception is the confirmed ability of isolates of B. lactucae and G. cichoracearum from L. serriola to infect some L. sativa cultivars (Petrželová & Lebeda 2004a;Lebeda et al 2012Lebeda et al , 2013. Recent study of interactions of L. serriola genotypes with well characterised isolates of B. lactucae originating from L. serriola revealed low level of race-specific resistance of investigated L. serriola populations (Křenová 2013).…”

Section: Discussionmentioning

confidence: 99%

“…To increase the possibility of more detailed studies of GC populations for a pathogenic variability and its temporal changes, a basic differential set of Lactuca spp. has been established (Lebeda et al 2012). Later studies clearly demonstrated existence of race-specific interactions in the wild pathosystem Lactuca spp.-G. cichoracearum s. str.…”

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confidence: 96%

Incidence of lettuce downy mildew (Bremia lactucae) and powdery mildew (Golovinomyces cichoracearum) in natural populations of prickly lettuce (Lactuca serriola)

Mieslerová¹,

Lebeda²,

Petrželová³

et al. 2013

Plant Prot. Sci.

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Mieslerová B., Lebeda A., Petrželová I., Korbelová P. (2013): Incidence of lettuce downy mildew (Bremia lactucae) and powdery mildew (Golovinomyces cichoracearum) in natural populations of prickly lettuce (Lactuca serriola). Plant Protect. Sci., 39 (Special Issue): S24-S32.The study was focused on the wild pathosystem Lactuca serriola-lettuce downy mildew (Bremia lactucae) and lettuce powdery mildew (Golovinomyces cichoracearum). Observations were focused mainly on recording natural infection of prickly lettuce (Lactuca serriola) by downy and powdery mildews in the East Bohemia and Moravia (the Czech Republic) in the May-September period of 2007-2011, and on the influence of environmental conditions on disease incidence. Only data for July and August were used for the detailed comparisons of occurrence of both pathogens, because intensity of disease in this period was the highest. Data were linked with the average monthly temperature and rainfall rate in the Czech Republic. G. cichoracearum prefers rather low levels of precipitation and temperatures around 20°C, therefore significantly higher incidence of this pathogen was recorded in August 2007. On the other hand in July 2009 and 2010, when the intensities of precipitation were higher, incidence of Bremia lactucae prevailed. In August 2010 and 2011 incidence of both pathogens were more or less similar at all locations. Our observations showed that climatic conditions influence the incidence and prevalence of both pathogens in weedy growing populations of Lactuca serriola.

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“…Sphaerotheca fuliginea (Schltdl.) Pollacci 1913) (Lebeda et al 2012b;McCreight 2006)]. However, the existence of a gene-for-gene relationship has also been demonstrated in a number of wild plant pathosystems (Brown and Tellier 2011;Burdon et al 2006;Thrall and Burdon 2002).…”

Section: Introductionmentioning

confidence: 99%

“…A differential set of 13 accessions of four Lactuca spp. was developed in 2005(Mieslerová et al 2006Lebeda et al 2012b) to differentiate G. cichoracearum races. The establishment of a basic differential set has made deeper studies of spatiotemporal variation in virulence in GC populations possible.…”

Section: Introductionmentioning

confidence: 99%

Host specificity and virulence variation in populations of lettuce powdery mildew pathogen (Golovinomyces cichoracearum s. str.) from prickly lettuce (Lactuca serriola)

et al. 2012

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Mieslerová B., Lebeda A., Petrželová I., Korbelová P. (2013): Incidence of lettuce downy mildew (Bremia lactucae) and powdery mildew (Golovinomyces cichoracearum) in natural populations of prickly lettuce (Lactuca serriola). Plant Protect. Sci., 39 (Special Issue): S24-S32. The study was focused on the wild pathosystem Lactuca serriola-lettuce downy mildew (Bremia lactucae) and lettuce powdery mildew (Golovinomyces cichoracearum). Observations were focused mainly on recording natural infection of prickly lettuce (Lactuca serriola) by downy and powdery mildews in the East Bohemia and Moravia (the Czech Republic) in the May-September period of 2007-2011, and on the influence of environmental conditions on disease incidence. Only data for July and August were used for the detailed comparisons of occurrence of both pathogens, because intensity of disease in this period was the highest. Data were linked with the average monthly temperature and rainfall rate in the Czech Republic. G. cichoracearum prefers rather low levels of precipitation and temperatures around 20°C, therefore significantly higher incidence of this pathogen was recorded in August 2007. On the other hand in July 2009 and 2010, when the intensities of precipitation were higher, incidence of Bremia lactucae prevailed. In August 2010 and 2011 incidence of both pathogens were more or less similar at all locations. Our observations showed that climatic conditions influence the incidence and prevalence of both pathogens in weedy growing populations of Lactuca serriola.

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Patterns of virulence variation in the interaction between Lactuca spp. and lettuce powdery mildew (Golovinomyces cichoracearum)

Cited by 16 publications

References 41 publications

Genetic structure and diversity in natural populations of three predominantly self-pollinating wild Lactuca species in Israel

Genetic structure and diversity in natural populations of three predominantly self-pollinating wild Lactuca species in Israel

Incidence of lettuce downy mildew (Bremia lactucae) and powdery mildew (Golovinomyces cichoracearum) in natural populations of prickly lettuce (Lactuca serriola)

Host specificity and virulence variation in populations of lettuce powdery mildew pathogen (Golovinomyces cichoracearum s. str.) from prickly lettuce (Lactuca serriola)

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