Interspecific genetic linkage map, segregation distortion and genetic conversion in coffee (Coffea sp.)

Ky, Chin‐Long; Barré, Philippe; Lorieux, Mathias; Trouslot, Pierre; Akaffou, Sélastique; Louarn, Jacques; Charrier, André; Hamon, Serge; Noirot, Michel

doi:10.1007/s001220051529

Cited by 113 publications

(98 citation statements)

References 33 publications

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“…High levels of segregation distortion for the B-genome chromosomes were observed in this study at the BC 3 level. This is due to the aneuploid nature of the BC 3 plants, which can be explained by the interspecific origin of the material and the fact that homeologous chromosomes from the B and A genomes do not pair very frequently (Parkin and Lydiate 1997;Ky et al 2000;Lorieux et al 2000;Mason et al 2010a). This was previously reported in interspecific Brassica hybrids that contained distantly related genomes (Chèvre et al 1998(Chèvre et al , 2007.…”

Section: Cytological Tracking Of the B-genome Chromosomesmentioning

confidence: 62%

“…One of the goals of Brassica oilseed research programs is the stable introgression of novel traits from wild or closely related species into cultivated canola plants through interspecific crosses (Ky et al 2000). The Brassica species containing the B genome, B. nigra, B. carinata, and B. juncea, possess valuable agronomic traits including blackleg resistance (caused by Leptosphaeria maculans), heat and drought tolerance (Kumar et al 1984), aluminum tolerance (Huang et al 2002), and tolerance to salinity (Malik 1990).…”

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confidence: 99%

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Analysis of B-Genome Chromosome Introgression in Interspecific Hybrids of Brassica napus × B. carinata

et al. 2011

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Brassica carinata, an allotetraploid with B and C genomes, has a number of traits that would be valuable to introgress into B. napus. Interspecific hybrids were created between B. carinata (BBCC) and B. napus (AACC), using an advanced backcross approach to identify and introgress traits of agronomic interest from the B. carinata genome and to study the genetic changes that occur during the introgression process. We mapped the B and C genomes of B. carinata with SSR markers and observed their introgression into B. napus through a number of backcross generations, focusing on a BC 3 and BC 3 S 1 sibling family. There was close colinearity between the C genomes of B. carinata and B. napus and we provide evidence that B. carinata C chromosomes pair and recombine normally with those of B. napus, suggesting that similar to other Brassica allotetraploids no major chromosomal rearrangements have taken place since the formation of B. carinata. There was no evidence of introgression of the B chromosomes into the A or C chromosomes of B. napus ; instead they were inherited as whole linkage groups with the occasional loss of terminal segments and several of the B-genome chromosomes were retained across generations. Several BC 3 S 1 families were analyzed using SSR markers, genomic in situ hybridization (GISH) assays, and chromosome counts to study the inheritance of the B-genome chromosome(s) and their association with morphological traits. Our work provides an analysis of the behavior of chromosomes in an interspecific cross and reinforces the challenges of introgressing novel traits into crop plants.

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Section: Cytological Tracking Of the B-genome Chromosomesmentioning

confidence: 62%

mentioning

confidence: 99%

Analysis of B-Genome Chromosome Introgression in Interspecific Hybrids of Brassica napus × B. carinata

et al. 2011

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“…The SD system was found first in Drosophila and has been studied extensively (Lyttle 1991). It has also been found in many plant species, including rice (Xu et al 1997), wheat (Farisa et al 1998), maize (Lu et al 2002), barley (Kleinhofs et al 1993), and coffee (Ky et al 2000). In our high-density SSR map, only two regions on the nine major LGs showed significant segregation distortion.…”

Section: Suppression Of Recombination In the Msymentioning

confidence: 81%

Construction of a Sequence-Tagged High-Density Genetic Map of Papaya for Comparative Structural and Evolutionary Genomics in Brassicales

Chen

Hou

et al. 2007

Genetics

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A high-density genetic map of papaya (Carica papaya L.) was constructed using microsatellite markers derived from BAC end sequences and whole-genome shot gun sequences. Fifty-four F 2 plants derived from varieties AU9 and SunUp were used for linkage mapping. A total of 707 markers, including 706 microsatellite loci and the morphological marker fruit flesh color, were mapped into nine major and three minor linkage groups. The resulting map spanned 1069.9 cM with an average distance of 1.5 cM between adjacent markers. This sequence-based microsatellite map resolved the very large linkage group 2 (LG 2) of the previous high-density map using amplified fragment length polymorphism markers. The nine major LGs of our map represent papaya's haploid nine chromosomes with LG 1 of the sex chromosome being the largest. This map validates the suppression of recombination at the male-specific region of the Y chromosome (MSY) mapped on LG 1 and at potential centromeric regions of other LGs. Segregation distortion was detected in a large region on LG 1 surrounding the MSY region due to the abortion of the YY genotype and in a region of LG6 due to an unknown cause. This high-density sequencetagged genetic map is being used to integrate genetic and physical maps and to assign genome sequence scaffolds to papaya chromosomes. It provides a framework for comparative structural and evolutional genomic research in the order Brassicales. Papaya is a perennial plant species that flowers as early as 3 months and produces fruit in 9 months; it is trioecious with an intriguing sex determination system with three basic sex types: male, female, and hermaphrodite. A high-density genetic map of papaya, constructed using 1498 AFLP and three morphological markers revealed severe suppression of recombination at the sex determination locus with 225 cosegregating markers accounting for 66% of the markers on linkage group 1 (LG 1) and 15% of the markers genomewide . This AFLP map provided a critical piece of evidence for defining the primitive Y chromosome in papaya . Sequence comparison of Y-specific fragments from males and hermaphrodites confirmed that 1

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“…In January 2005 we collected approximately 10 g of young leaves from 73 BC 1 F 1 plants and isolated total genomic DNA from freeze-dried leaves as described by Ky et al (2000). Eight microsatellites (32-2CTG, C2-2CTC, E8-3-CTG, M20, M27, M32, EST-SSR1, EST-SSR2) that have previously shown clear polymorphisms between BV and R4x in a preliminary screening (data not shown) were selected for use in this study.…”

Section: Microsatellite Marker Assaymentioning

confidence: 99%

Caffeine inheritance in interspecific hybrids of Coffea arabica x Coffea canephora (Gentianales, Rubiaceae)

et al. 2008

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Caffeine inheritance was investigated in F 2 and BC 1 F 1 generations between Coffea arabica var. Bourbon Vermelho (BV) and Coffea canephora var. Robusta 4x (R4x). The caffeine content of seeds and leaves was determined during 2004 and 2005. Microsatellite loci-markers were used to deduce the meiotic pattern of chromosome pairing of tetraploid interspecific hybrids. Genetic analysis indicated that caffeine content in seeds was quantitatively inherited and controlled by genes with additive effects. The estimates of broad-sense heritability of caffeine content in seeds were high for both generations. In coffee leaves, the caffeine content (BSH) from the same populations showed transgressive segregants with enhanced levels and high BSH. Segregation of loci-markers in BC 1 F 1 populations showed that the ratios of the gametes genotype did not differ significantly from those expected assuming random associations and tetrasomic inheritance. The results confirm the existence of distinct mechanisms controlling the caffeine content in seeds and leaves, the gene exchange between the C. arabica BV and C. canephora R4x genomes and favorable conditions for improving caffeine content in this coffee population.

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Interspecific genetic linkage map, segregation distortion and genetic conversion in coffee (Coffea sp.)

Cited by 113 publications

References 33 publications

Analysis of B-Genome Chromosome Introgression in Interspecific Hybrids of Brassica napus × B. carinata

Analysis of B-Genome Chromosome Introgression in Interspecific Hybrids of Brassica napus × B. carinata

Construction of a Sequence-Tagged High-Density Genetic Map of Papaya for Comparative Structural and Evolutionary Genomics in Brassicales

Caffeine inheritance in interspecific hybrids of Coffea arabica x Coffea canephora (Gentianales, Rubiaceae)

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