Non-Mendelian Inheritance Revealed in a Genetic Analysis of Sexual Progeny of Phytophthora cinnamomi with Microsatellite Markers

Dobrowolski, Mark P.; Tommerup, I.C.; Blakeman, Harley D.; O’Brien, P.A.

doi:10.1006/fgbi.2001.1319

Cited by 68 publications

(66 citation statements)

References 52 publications

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“…inheritance of alleles, due to meiotic non-disjunction, has been reported for P. cinnamomi 579 (Dobrowolski et al 2002) and P. nicotianae (Förster and Coffey 1990) and this phenomenon could 580 explain the above observations. Alternatively, this could also be explained by gene conversion 581 disparity where one allele is always lost Vercauteren et al 2011).…”

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confidence: 72%

Characterization of Phytophthora hybrids from ITS clade 6 associated with riparian ecosystems in South Africa and Australia

et al. 2013

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confidence: 72%

Characterization of Phytophthora hybrids from ITS clade 6 associated with riparian ecosystems in South Africa and Australia

et al. 2013

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“…Nonstoichiometric ratios of alleles and mitotic instability have been reported in F 1 hybrids of Phytophthora parasitica (51) P. infestans (52), and Phytophthora cinnamomi (53). In the case of the latter two species, inheritance of three alleles in some hybrids suggested that abnormal chromosome segregation during meiosis was involved in some cases.…”

Section: Discussionmentioning

confidence: 99%

High frequency mitotic gene conversion in genetic hybrids of the oomycete Phytophthora sojae

Chamnanpunt

Shan

Tyler

2001

Proc. Natl. Acad. Sci. U.S.A.

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Microbial populations depend on genetic variation to respond to novel environmental challenges. Plant pathogens are notorious for their ability to overcome pesticides and host resistance genes as a result of genetic changes. We report here that in particular hybrid strains of Phytophthora sojae, an oomycete pathogen of soybean, high frequency mitotic gene conversion rapidly converts heterozygous loci to homozygosity, resulting in heterokaryons containing highly diverse populations of diploid nuclei. In hybrids involving strain P7076, conversion rates of up to 3 ؋ 10 ؊2 per locus per nucleus per generation were observed. In other hybrids, rates were of the order of 5 ؋ 10 ؊5 . Independent gene conversion was observed within a selected linkage group including loci as close as 0.7 kb apart and in unlinked markers throughout the genome. Gene conversions continued throughout vegetative growth and were stimulated by further sexual reproduction. At many loci, conversion showed extreme disparity, with one allele always being lost, suggesting that conversion was initiated by allele-specific double-stranded breaks. Pedigree analysis indicated that individual loci undergo multiple independent conversions within the nuclei of a vegetative clone and that conversion may be preceded by a heritable ''activation'' state.

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“…(f) Mendelian inheritance. Although microsatellites have generally been considered to be markers with Mendelian inheritance (Jarne and Lagoda 1996), some researchers have questioned this assumption (e.g., Dobrowolski et al 2002;Smith et al 2000) and suggest that evaluation of microsatellite loci for this property in parent-offspring pairs should be done before using microsatellites in analyses (Smith et al 2000).…”

Section: Uses Assumptions and Limitationsmentioning

confidence: 98%

Tools and Recent Progress in Studying Gene Flow and Population Genetics of the Bemisia tabaci Sibling Species Group

Hadjistylli

Brown

Roderick

2009

Bemisia: Bionomics and Management of a Global Pest

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Non-Mendelian Inheritance Revealed in a Genetic Analysis of Sexual Progeny of Phytophthora cinnamomi with Microsatellite Markers

Cited by 68 publications

References 52 publications

Characterization of Phytophthora hybrids from ITS clade 6 associated with riparian ecosystems in South Africa and Australia

Characterization of Phytophthora hybrids from ITS clade 6 associated with riparian ecosystems in South Africa and Australia

High frequency mitotic gene conversion in genetic hybrids of the oomycete Phytophthora sojae

Tools and Recent Progress in Studying Gene Flow and Population Genetics of the Bemisia tabaci Sibling Species Group

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