Development of two sequence-specific PCR markers linked to the le gene that reduces pod shattering in narrow-leafed Lupin (Lupinus angustifolius L.)
AUTOR(ES)
Boersma, Jeffrey G., Buirchell, Bevan J., Sivasithamparam, Krishnapillai, Yang, Huaan
FONTE
Genetics and Molecular Biology
DATA DE PUBLICAÇÃO
2007
RESUMO
Wild types of narrow-leaf lupin (Lupinus angustifolius L.) have seed pods that shatter upon maturity, leading to the loss of their seeds before or during the harvest process. Two recessive genes have been incorporated into domesticated cultivars of this species to maximize harvest-ability of the produce. One of these genes is called lentus (le). Two microsatellite - anchored fragment length polymorphism (MFLP) candidate markers were identified as closely linked to the le gene in a recombinant inbred line (RIL) population derived from a domesticated x wild type cross. The candidate MFLP markers were isolated from the gel, re-amplified by PCR, cloned and sequenced. The MFLP polymorphisms were converted into sequence-specific PCR-based markers. Linkage analysis by MapManager indicated that one of the markers, LeM1, was 2.6 centiMorgans (cM) and the other, LeM2, was 1.3 cM from the gene, with both being on the same side. The correlation between the marker genotype and the plant phenotype for the le gene is 95% for the Australian cultivars, and approximately 36% on wild types tested. These markers may be useful in marker assisted selection for the le gene when introgressing wild material into lupin breeding programs.
Documentos Relacionados
- Synthesis, Storage, and Utilization of Amino Compounds in White Lupin (Lupinus albus L.) 1
- Enhanced methionine levels and increased nutritive value of seeds of transgenic lupins (Lupinus angustifolius L.) expressing a sunflower seed albumin gene
- Organization and nucleotide sequence of nuclear 5S rRNA genes in yellow lupin (Lupinus luteus).
- THE EFFECT OF THE INTERRELATIONSHIP OF BORON AND MANGANESE ON THE GROWTH AND CALCIUM UPTAKE OF BLUE LUPINE (LUPINUS ANGUSTIFOLIUS L.) IN SOLUTION CULTURE
- Sequence-specific "gene signatures" can be obtained by PCR with single specific primers at low stringency.