We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Linking New Alleles at the Oscillator Loci to Flowering and Expansion of Asian Rice.
- Authors
Gao, Guangtong; Chen, Maoxian; Mo, Rong; Li, Nan; Xu, Yunzhang; Lu, Yingqing
- Abstract
The central oscillator is believed to be the key mechanism by which plants adapt to new environments. However, impacts from hybridization, the natural environment, and human selection have rarely been assessed on the oscillator of a crop. Here, from clearly identified alleles at oscillator loci (OsCCA1/LHY, OsPRR95, OsPRR37, OsPRR59, and OsPRR1) in ten diverse genomes of Oryza sativa, additional accessions, and functional analysis, we show that rice's oscillator was rebuilt primarily by new alleles from recombining parental sequences and subsequent 5′ or/and coding mutations. New alleles may exhibit altered transcript levels from that of a parental allele and are transcribed variably among genetic backgrounds and natural environments in RIL lines. Plants carrying more expressed OsCCA1_a and less transcribed OsPRR1_e flower early in the paddy field. 5′ mutations are instrumental in varied transcription, as shown by EMSA tests on one deletion at the 5′ region of highly transcribed OsPRR1_a. Compared to relatively balanced mutations at oscillator loci of Arabidopsis thaliana, 5′ mutations of OsPRR37 (and OsCCA1 to a less degree) were under negative selection while those of OsPRR1 alleles were under strong positive selection. Together, range expansion of Asian rice can be elucidated by human selection on OsPRR1 alleles via local flowering time-yield relationships.
- Subjects
ALLELES; RICE; LOCUS (Genetics); ARABIDOPSIS thaliana; PLANT hybridization; FUNCTIONAL analysis; HYBRID rice
- Publication
Genes, 2023, Vol 14, Issue 11, p2027
- ISSN
2073-4425
- Publication type
Article
- DOI
10.3390/genes14112027