THỨ TƯ,NGÀY 22 THÁNG 4, 2020

Relationship between real and you can hereditary distances for chromosomes 2 and you may 15 (Chr2 and Chr15)

Bởi Nguyễn Hoàng Phong

Cập nhật: 15/06/2022, 12:22

Relationship between real and you can hereditary distances for chromosomes 2 and you may 15 (Chr2 and Chr15)

The fresh new stresses included in the fresh new get across, 09Bc11 and you will B, disagree into the fungicide sensitivity activities. Strain 09Bc11 try resistant against boscalid and you can iprodione, whereas B try responsive to one another fungicides. Resistant alleles segregated into the an effective Mendelian step one : step 1 fashion throughout the girls and boys (30R and you will 37S so you’re able to iprodione; 37R and you may 30S to help you boscalid). Linkage are determined ranging from fungicide opposition faculties and SNP alleles (Fig. 4). Boscalid opposition completely co-segregated (at the a volume away from >97%) having a single low-associated SNP allele that mapped so you’re able to Chr1 doing status step one 800 100, whereas iprodione resistance co-segregated (at a frequency regarding >97%) that have sixteen low-associated SNP alleles to the Chr1 as much as status 2 two hundred one hundred thousand. After that study of such places showed that boscalid and you can iprodione resistance had been as a result of brand new recognized H272R mutation regarding the succinate dehydrogenase gene BcSdhB (Leroux mais aussi al., 2010 ) together with identified I365S mutation from the histidine kinase gene Bos1 (Leroux ainsi que al., 2002 ), respectively.

Mapping out of one or two fungicide resistance loci to chromosome step 1 (Chr1). The brand new x-axis represents sequence set-up coordinates. The newest y-axis signifies the new subtraction regarding wavelengths where an individual nucleotide polymorphism (SNP) is located in respective fungicide resistant (R) minus delicate (S) majority. Frequencies was indeed calculated for every condition on R otherwise S majority making use of the algorithm: final number off reads representing the newest SNP at updates/final number regarding reads since the position in bulk. The brand new y worthy of for the SNP standing may differ between no for unlinked positions so you’re able to +step 1 having definitely connected positions (SNP about opposition) or to ?1 in the case off a terrible linkage (SNP related to susceptibility). Blue sectors represent associated SNPs otherwise SNPs exterior programming sequences and you can eco-friendly sectors portray low-associated SNPs, only. Red groups represent the new SNPs you to definitely consult opposition. (A) Mapping of your own boscalid opposition locus. (B) Mapping of your own iprodione opposition locus.

Recombination pricing

Utilizing the final set up out of filter systems B while the a guide, SNPs anywhere between B and you will 09Bc11 was basically re also-determined. The common frequency out of SNPs along the whole genome is actually 1 within the 150 bp. The newest distribution out of SNPs between B and you may 09Bc11 over the chromosomes try heterogeneous: there have been longer places with only partners SNPs and other places with a high thickness regarding SNPs (Fig. 5). Approximately 75 one hundred thousand SNPs dating apps for young adults that will be mapped unambiguously were utilized to construct a top-believe, high-thickness linkage chart. The fresh genetic chart had a collective duration of 4153 cM and the brand new proportion from bodily in the place of genetic distance varied of 7.8 kb/cM (Chr6) so you’re able to 11.6 kb/cM (Chr2), with a good genome-wide average from ten kb/cM. A genetic range of 1 cM corresponded in order to a physical point ranging from 0 in order to 138 kb. The brand new linkage map identified 40 nations (ranging from one and you may four for every single chromosome) with high recombination prices (Figs 5 and you will S2). This type of nations were, that have two conditions, found at least two hundred kb out of telomeric nations, while multiple recombination spot nations was in fact adjacent to the centromeres, like in Chr2, 11, fourteen, fifteen and you can 16 (Fig. S2). Regions with a high recombination pricing just weren’t preferentially on the visibility out of transposable elements: merely two of the 40 nations with a high recombination costs contained a well-known transposable feature (Dining table S2, see Help Guidance).

To test the fresh new mapping quality achievable by complete progeny sequencing approach for separate loci, 67 intimate progeny of your get across ranging from 09Bc11 and B were phenotyped to the boscalid and you will iprodione

This new x-axis screens the brand new genetic range in centimorgan (cM) additionally the y-axis displays the latest chromosome coordinates within the base pairs (bp). The new relationship ranging from bodily and you can genetic distances while the relationship coefficient are given in the greatest right-hands spot of your chart. For every blue diamond stands for good marker classification [people regarding single nucleotide polymorphisms (SNPs) completely co-segregating in most progeny]. The eco-friendly hatched arrow means this new calculate condition of centromere. Black colored arrows indicate countries with high recombination rates.

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