RRC ID 1671
著者 Pupilli F, Martinez EJ, Busti A, Calderini O, Quarin CL, Arcioni S.
タイトル Comparative mapping reveals partial conservation of synteny at the apomixis locus in Paspalum spp.
ジャーナル Mol Genet Genomics
Abstract In plants, gametophytic apomixis is a form of asexual reproduction that leads to the formation of seed-derived offspring that are genetically identical to the mother plant. A common set of RFLP markers, including five rice anchor markers previously shown to be linked to apomixis in Paspalum simplex, were used to detect linkage with apomixis in P. notatum and P. malacophyllum. A comparative map of the region around the apomixis locus was constructed for the three Paspalum species, and compared to the rice map. The locus that controls apomixis in P. simplex was almost completely conserved in the closely related species P. malacophyllum, whereas it was only partially represented in the distantly related species P. notatum. Although strong synteny of markers was noted between this locus and a portion of rice chromosome 12 in both P. simplex and P. malacophyllum, the same locus in P. notatum was localized to a hybrid chromosome which carries markers that map to rice chromosomes 2 and 12. All three Paspalum species showed recombination suppression at the apomixis locus; in the case of P. notatum, this might be due to a heterozygosity for a translocation that most probably negatively interferes with chromosomal pairing near the locus. A common set of markers that show linkage with apomixis in all three Paspalum species define a portion of the apomixis-controlling locus that is likely to contain genes critical for apomictic reproduction.
巻・号 270(6)
ページ 539-48
公開日 2004-1-1
DOI 10.1007/s00438-003-0949-5
PMID 14648202
MeSH Chromosome Mapping / methods Conserved Sequence DNA, Plant / genetics Genes, Plant* Genetic Markers Genome, Plant Oryza / genetics Paspalum / classification Paspalum / genetics* Seeds / genetics Species Specificity
IF 2.797
引用数 49
WOS 分野 GENETICS & HEREDITY BIOCHEMISTRY & MOLECULAR BIOLOGY
リソース情報
情報 Rice