Spontaneous male sterility is an advantageous trait for both producing hybrids and understanding the developmental process of the male reproductive unit in many crops. Lu et al. use a map-based cloning strategy together with comparative mapping to study the triallelic genetic male-sterile locus BnMs5 in Brassica napus, and delimit it to a 21-kb fragment of the A8 chromosome. Sequence analysis suggests that BnMs5 originates from the B. rapa MF2 subgenome, and may reside in a hotspot region of chromosomal evolution. This work paves the way for further cloning of BnMs5, and presents a powerful method for mapping loci in plants with complex genomic architecture.
Subscribe via Email
agriculture Annals of Botany Arabidopsis Arabidopsis thaliana Biodiversity Blogging Botany carnivorous plants Climate change Conservation development domestication Drought Ecology education Evolution flow cytometry food food security freeaccess genetics germination hybridization IBC11 IBC18 Latest Articles New Phytologist nitrogen orchids phosphorus Photosynthesis phylogeny Plant Biology plants Plant Science PNAS pollen Pollination polyploidy Rice Science science communication Taxonomy video wheat
New in Annals of Botany