Journal ArticleDOI
RFLP maps of potato and their alignment with the homoeologous tomato genome
Christiane Gebhardt,Enrique Ritter,Amalia Barone,Thomas Debener,Birgit Walkemeier,U. Schachtschabel,H. Kaufmann,Richard D. Thompson,M. W. Bonierbale,Martin W. Ganal,Steven D. Tanksley,Francesco Salamini +11 more
TLDR
Comparisons between potato RFLP maps derived from different genetic backgrounds revealed conservation of marker order but differences in chromosome and total map length, and significant reduction of map length was observed in interspecific compared to intraspecific crosses.Abstract:
An RFLP linkage map of the potato is presented which comprises 304 loci derived from 230 DNA probes and one morphological marker (tuber skin color) The self-incompatibility locus of potato was mapped to chromosome I, which is homoeologous to tomato chromosome I By mapping chromosome-specific tomato RFLP markers in potato and, vice versa, potato markers in tomato, the different potato and tomato RFLP maps were aligned to each other and the similarity of the potato and tomato genome was confirmed The numbers given to the 12 potato chromosomes are now in accordance with the established tomato nomenclature Comparisons between potato RFLP maps derived from different genetic backgrounds revealed conservation of marker order but differences in chromosome and total map length In particular, significant reduction of map length was observed in interspecific compared to intraspecific crosses The distribution of regions with distorted segregation ratios in the genome was analyzed for four potato parents The most prominent distortion of recombination was found to be caused by the self-incompatibility locusread more
Citations
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Journal ArticleDOI
High density molecular linkage maps of the tomato and potato genomes.
Steven D. Tanksley,Martin W. Ganal,James P. Prince,M. C. de Vicente,M. W. Bonierbale,Pierre Broun,T. M. Fulton,James J. Giovannoni,Silvana Grandillo,Gregory B. Martin +9 more
TL;DR: Currently tomato and potato are among the most thoroughly mapped eukaryotic species and the availability of high density molecular linkage maps should facilitate chromosome walking, quantitative trait mapping, marker-assisted breeding and evolutionary studies in these two important and well studied crop species.
Journal ArticleDOI
A PCR-based approach for isolating pathogen resistance genes from potato with potential for wide application in plants
TL;DR: The results indicate that plant resistance genes that are effective against nematodes, fungi andviruses and bacteria may be isolated based on common sequence motifs and PCR methodology.
Journal ArticleDOI
Qtl mapping and quantitative disease resistance in plants
TL;DR: These studies provide insights into the number of quantitative resistance loci involved in complex disease resistance, epistatic and environmental interactions, race-specificity of partial resistance locu, interactions between pathogen biology, plant development and biochemistry, and the relationship between qualitative and quantitative loci.
Journal ArticleDOI
Organization of genes controlling disease resistance in the potato genome
TL;DR: It is proposed that some QTL for resistance have a molecular basis similar to single R genes, and genes having structural similarity with cloned R genes and genes involved in the defense response are proposed.
Journal ArticleDOI
Chromosomal regions associated with segregation distortion of molecular markers in F2 , backcross, doubled haploid, and recombinant inbred populations in rice (Oryza sativa L.)
TL;DR: Ch Chromosomal regions associated with marker segregation distortion in rice were compared based on six molecular linkage maps, suggesting that loci in these regions may be associated with preferential regeneration of japonica genotypes during anther culture.
References
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Journal ArticleDOI
MAPMAKER: An interactive computer package for constructing primary genetic linkage maps of experimental and natural populations
Eric S. Lander,Eric S. Lander,Philip Green,Jeff Abrahamson,Aaron Barlow,Mark J. Daly,Stephen E Lincoln,Lee Newburg +7 more
TL;DR: A computer package, called MAPMAKER, designed specifically for the construction of linkage maps in a number of organisms, including the human and several plants, and it is outlined the mapping strategies that have been used.
Journal ArticleDOI
The estimation of map distances from recombination values.
TL;DR: The genetic map is a tool to quantify the distance between genes on a chromosome, based on the observed frequency of crossovers during cell division, which is used to estimate the total distance between chromosomes.
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RFLP Mapping in Plant Breeding: New Tools for an Old Science
TL;DR: RFLP linkage maps provide a more direct method for selecting desirable genes via their linkage to easily detectable RFLP markers and may make it possible to clone genes whose products are unknown, such as genes for disease resistance or stress tolerance.
Journal ArticleDOI
Molecular mapping of rice chromosomes.
Susan R. McCouch,G. Kochert,Z. H. Yu,Z. Y. Wang,Gurdev S. Khush,W. R. Coffman,Steven D. Tanksley +6 more
TL;DR: It is discovered that rice DNA is less C-methylated than tomato or maize DNA, suggesting the notion that a large fraction of the rice genome (approximately 50%) is single copy.
Journal ArticleDOI
RFLP Maps Based on a Common Set of Clones Reveal Modes of Chromosomal Evolution in Potato and Tomato.
TL;DR: Linkage maps based on a common set of restriction fragment length polymorphism markers provide a basis for uniting the previously separate disciplines of tomato and potato genetics and may now be possible to test theories about homologies or orthologies of other genes, including those coding for disease resistance and stress tolerances.