In:
BMC Genetics, Springer Science and Business Media LLC, Vol. 21, No. 1 ( 2020-12)
Abstract:
The exploitation of novel alleles from wild rice that were lost during rice cultivation could be very important for rice breeding and evolutionary studies. Plant height (PH) was a target of artificial selection during rice domestication and is still a target of modern breeding. The “green revolution” gene semi-dwarf 1 ( SD1 ) were well documented and used in the past decades, allele from wild rice could provide new insights into the functions and evolution of this gene. Results We identified a PH-related quantitative trait locus, qCL1.2 ,from wild riceusing a set of chromosome segment substitution lines. qCL1.2 encodesa novel allele of SD1 gene. The wild allele of SD1 is a dominant locus that can significantly promote rice internode length by regulating the expression levels of genes involved in gibberellin biosynthesis and signal transduction. Nucleotide diversity and haplotype network analyses of the SD1 gene were performed using 2822 rice landraces. Two previously reported functional nucleotide polymorphisms clearly differentiated japonica and indica rice; however, they were not associated with PH selection. Other new functional nucleotide polymorphisms in the coding, but not promoter, regions were involved in PH selection during rice domestication. Our study increasesunderstanding of the rice SD1 gene and provides additional evidence of this gene’s selection during rice domestication. Conclusions Our findings provide evidence that SD1 gene from wild rice enhances plant height and new functional nucleotide polymorphisms of this gene were artificially selected during cultivated rice differentiation.
Type of Medium:
Online Resource
ISSN:
1471-2156
DOI:
10.1186/s12863-020-00868-w
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2020
detail.hit.zdb_id:
2041497-3
detail.hit.zdb_id:
3058779-7
SSG:
12
