Change of the crossing-over frequency inDrosophila during selection for resistance to temperature fluctuations

Жученко, А. А.; Korol, Abraham B.; Kovtyukh, L. P.

doi:10.1007/bf02424463

Cited by 35 publications

(12 citation statements)

References 9 publications

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“…Selection for negative geotaxis did not result in if changes in chromosome 2 whereas selection in the opposite direction caused nearly a fourfold increase in if in the b-cn segment and a significant, albeit not as high, increase in the adjacent regions, al-b and cn-vg. A marked if-response of the bcn segment was also observed in our previous experiments with selection for Drosophila thermal adaptation (Zhuchenko et al, 1983(Zhuchenko et al, , 1985Gorodetsky etal., 1990;Korol eta!., 1990).…”

Section: Resultssupporting

confidence: 79%

“…Presumably, this difference reflects the reaction of the rec-systems of domesticated species to the long-term pressure of artificial selection. In a series of reproducible experiments, we have shown that adaptation of large cage populations of D. inelanogaster to daily temperature fluctuations (with the amplitude increasing over generations) results in increased recombination (Zhuchenko et a!., 1983(Zhuchenko et a!., , 1985Gorodetsky et a!., 1990;Korol eta!., 1990).…”

Section: Introductionmentioning

confidence: 99%

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Increased recombination frequencies resulting from directional selection for geotaxis in Drosophila

Korol

Iliadi

1994

Heredity

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Several classes of models have been suggested to explain how natural selection can favour non-zero recombination. Directional and fluctuating selection, abiotic and biotic, and selection against harmful mutations seem to be the most plausible factors, but little has been done to test the problem experimentally. Here we show that long-term selection for positive or negative geotaxis in Drosophila melanogaster results in a dramatic increase in recombination rates in different genomic regions. The total increment in recombination for the genome portion considered is 78 cM for geo + and 66 cM for geo -. Selectionfor negative geotaxis did not result in recombination changes in chromosome 2 whereas selection in the opposite direction caused nearly a four-fold increase in the b-cn segment and a significant, albeit not as high, increase in the adjacent regions, al-b and cn-vg. In chromosomes X and 3, a significant increase in recombination was found in both selected lines. In total, the increment in exchange frequency in chromosome X (y-cv-ct-v-car) was from 72.6 per cent (the control level) to 124.7 and 110.3 per cent geo -and geo , respectively, whereas for the studied portion of chromosome 3 (ru-h-cu-sr-e) we obtained, correspondingly, 60.8, 76.4 and 73.8 per cent. Thus, in general, selection for geotaxis resulted in increased recombination frequencies regardless of the direction of selection. These results, taken together with other data, allow one to conclude that selection for fitness traits (e.g. for changed levels of quantitative traits, behavioural peculiarities or adaptation to adverse environmental conditions) may be a powerful factor causing rather rapid changes in the recombination system.

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Section: Resultssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Increased recombination frequencies resulting from directional selection for geotaxis in Drosophila

Korol

Iliadi

1994

Heredity

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“…However, changes in recombination rate have been also shown to evolve as a correlated response to artificial selection on other characters (Flexon and Rodell ; Zhuchenko et al. ; Korol and Iliadi ; Rodell et al. ).…”

Section: Discussionmentioning

confidence: 99%

Experimental evolution across different thermal regimes yields genetic divergence in recombination fraction but no divergence in temperature associated plastic recombination

Kohl

Singh

2018

Evolution

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Phenotypic plasticity is pervasive in nature. One mechanism underlying the evolution and maintenance of such plasticity is environmental heterogeneity. Indeed, theory indicates that both spatial and temporal variation in the environment should favor the evolution of phenotypic plasticity under a variety of conditions. Cyclical environmental conditions have also been shown to yield evolved increases in recombination frequency. Here, we use a panel of replicated experimental evolution populations of D. melanogaster to test whether variable environments favor enhanced plasticity in recombination rate and/or increased recombination rate in response to temperature. In contrast to expectation, we find no evidence for either enhanced plasticity in recombination or increased rates of recombination in the variable environment lines. Our data confirm a role of temperature in mediating recombination fraction in D. melanogaster, and indicate that recombination is genetically and plastically depressed under lower temperatures. Our data further suggest that the genetic architectures underlying plastic recombination and population-level variation in recombination rate are likely to be distinct.

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“…This has been verified in a number of empirical studies (eg Harinarayana and Murty, 1971;Flexon and Rodell, 1982;Zhuchenko et al, 1985;Burt and Bell, 1987;Wolf et al, 1987;Korol and Iliadi, 1994). The reverse predictionthat is that manipulating the level of recombination should result in changes in the response to selectionhas received some attention to date, with contradictory results (Carson, 1958;McPhee and Robertson, 1970;Markow, 1975;Malmberg, 1977;Thompson, 1977;Zeyl and Bell, 1997;Rice and Chippendale, 2001).…”

Section: Introductionmentioning

confidence: 88%

Genetic recombination and adaptation to fluctuating environments: selection for geotaxis in Drosophila melanogaster

et al. 2003

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Heritable variation in fitness is the fuel of adaptive evolution, and sex can generate new adaptive combinations of alleles. If the generation of beneficial combinations drives the evolution of recombination, then the level of recombination should result in changes in the response to selection. Three types of lines of Drosophila melanogaster varying in their level of genetic recombination were selected over 38 generations for geotaxis. The within-chromosome recombination level of these lines was controlled for 60% of the genome: chromosome X and chromosome II. The full recombination lines had normal, unmanipulated levels of recombination on these two chromosomes. Conversely, nonrecombination lines had recombination effectively eliminated within the X and second chromosomes. Finally, partial recombination lines had the effective rate of within-chromosome recombination lowered to 10% of natural levels for these two chromosomes. The rate of response to selection was measured for continuous negative geotaxis and for a fluctuating environment (alternating selection for negative and positive geotaxis). All selected Drosophila lines responded to selection and approximately 36% of the response to selection was because of the X and second chromosomes. However, recombination did not accelerate adaptation during either directional or fluctuating selection for geotaxis.

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Change of the crossing-over frequency inDrosophila during selection for resistance to temperature fluctuations

Cited by 35 publications

References 9 publications

Increased recombination frequencies resulting from directional selection for geotaxis in Drosophila

Increased recombination frequencies resulting from directional selection for geotaxis in Drosophila

Experimental evolution across different thermal regimes yields genetic divergence in recombination fraction but no divergence in temperature associated plastic recombination

Genetic recombination and adaptation to fluctuating environments: selection for geotaxis in Drosophila melanogaster

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