Publications by authors named "Yoshiko Isomura"
Many plant species have succeeded in colonizing a wide range of diverse climates through local adaptation, but the underlying molecular genetics remain obscure. We previously found that winter survival was a direct target of selection during colonization of Japan by the perennial legume Lotus japonicus and identified associated candidate genes. Here, we show that two of these, FERONIA-receptor like kinase (LjFER) and a S-receptor-like kinase gene (LjLecRK), are required for non-acclimated freezing tolerance and show haplotype-dependent cold-responsive expression.
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- The study investigates how Lotus japonicus has genetically adapted to colonize northern Japan over the last 20,000 years, moving from subtropical to colder environments.
- Researchers used full genome re-sequencing and common garden experiments to analyze demographic changes and selective pressures during this colonization process.
- They found strong genetic differentiation between northern and southern populations, particularly linked to traits like overwintering and flowering time, suggesting these traits were directly influenced by natural selection during adaptation.