| Title: |
Genome-wide association study and transcriptome analysis reveal natural variation of key genes regulation flowering time in rapeseed. |
| Authors: |
Xiang, Xingru, Qiu, Ping, Mei, Zhichao, Yao, Min, Liu, Wei, He, Dan, Cao, Song, He, Xin, Xiong, Xinghua, Liu, Zhongsong, Qian, Lunwen |
| Source: |
Molecular Breeding; Jun2024, Vol. 44 Issue 6, p1-13, 13p |
| Subject Terms: |
FLOWERING time, GENOME-wide association studies, GENETIC regulation, LOCUS (Genetics), RAPESEED, PLANT indicators |
| Abstract: |
Flowering time is a crucial determinant of both the yield and oil quality of rapeseed as well as a key indicator of plant maturity. We performed a genome-wide association study and transcriptome analysis to identify key genes/loci regulating flowering time in Brassica napus L. Forty-six haplotype regions harboring candidate genes were determined to be significantly associated with flowering time, and 28 of these haplotype regions overlapped with previously reported quantitative trait loci. A further investigation of these haplotype regions revealed nucleotide variations in the genes BnaFT-A02, BnaFRI-A10, and BnaFPA-A09 that correlated with phenotypic variations in flowering time. Furthermore, the co-expression network analysis indicated that BnaFT-A02 is directly linked to BnaFRI-A10 and BnaFPA-A09, in a subnetwork and also associated with 13 vernalization, 31 photoperiod, 33 autonomous pathway, and 10 gibberellin pathway genes, forming a potential network regulating flowering time in rapeseed. These results provide valuable haplotype markers for the breeding of early maturing rapeseed varieties. [ABSTRACT FROM AUTHOR] |
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| Database: |
Complementary Index |
