Inducing chromosome pairing through premature condensation: analysis of wheat interspecific hybrids.
At the onset of meiosis, chromosomes first decondense and then condense as the process of recognition and intimate pairing occurs between homologous chromosomes. We show here that okadaic acid, a drug known to induce chromosome condensation, can be introduced into wheat interspecific hybrids prior to meiosis to induce chromosome pairing. This pairing occurs in the presence of the Ph1 locus, which usually suppresses pairing of related chromosomes and which we show here delays condensation. Thus the timing of chromosome condensation during the onset of meiosis is an important factor in controlling chromosome pairing.
Knight
Emilie
E
John Innes Centre, Colney, Norwich NR4 7UH, UK.
Greer
Emma
E
Draeger
Tracie
T
Thole
Vera
V
Reader
Steve
S
Shaw
Peter
P
Moore
Graham
G
D002678:Chimera / Q000235:genetics*; D023902:Chromosome Pairing; D032461:Chromosomes, Plant / Q000187:drug effects; D004791:Enzyme Inhibitors / Q000494:pharmacology; D008540:Meiosis; D019319:Okadaic Acid / Q000494:pharmacology; D016376:Oligonucleotides, Antisense / Q000378:metabolism; D014908:Triticum / Q000235:genetics*
D004791:Enzyme Inhibitors; D016376:Oligonucleotides, Antisense; D019319:Okadaic Acid