| Literature DB >> 18521565 |
Sulieman Al-Faifi1, Jenelle D F Meyer, Jordi Garcia-Mas, Antonio J Monforte, Michael J Havey.
Abstract
The three genomes of cucumber show different modes of transmission, nuclear DNA bi-parentally, plastid DNA maternally, and mitochondrial DNA paternally. The mosaic (MSC) phenotype of cucumber is associated with mitochondrial DNA rearrangements and is a valuable tool for studying mitochondrial transmission. A nuclear locus (Psm) has been identified in cucumber that controls sorting of paternally transmitted mitochondrial DNA. Comparative sequencing and mapping of cucumber and melon revealed extensive synteny on the recombinational and sequence levels near Psm and placed this locus on linkage group R of cucumber and G10 of melon. However, the cucumber genomic region near Psm was surprisingly monomorphic with an average of one SNP every 25 kb, requiring that a family from a more diverse cross is produced for fine mapping and eventual cloning of Psm. The cucumber ortholog of Arabidopsis mismatch repair (MSH1) was cloned and it segregated independently of Psm, revealing that this candidate gene is not Psm.Entities:
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Year: 2008 PMID： 18521565 DOI： 10.1007/s00122-008-0796-1
Source DB: PubMed Journal: Theor Appl Genet ISSN： 0040-5752 Impact factor: 5.699