Journal
ISCIENCE
Volume 26, Issue 8, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.isci.2023.107366
Keywords
-
Categories
Ask authors/readers for more resources
Through TWAS and eQTL analysis, the genetic and molecular bases of leaf growth heterosis in a half-sibling Arabidopsis hybrid population were found to be explained by the varied expression levels of growth-regulating genes resulting from distinct sets of heterozygous eQTLs. The up-regulation of genes in the cell cycle pathway in the shoot apex and the photosynthesis pathway in true leaf positively correlates with leaf area heterosis level and is affected by the accumulation of superior heterozygous eQTLs. Increased photosynthetic cell number contributes significantly to leaf area heterosis.
Heterosis is an important genetic phenomenon that has been observed and widely utilized in agriculture. However, the genetic and molecular bases of heterosis are unclear. Through transcriptome-wide association studies (TWAS) and expression quantitative trait locus (eQTL) analysis to integrate genome, transcriptome, and heterotic phenotype of a half-sibling Arabidopsis hybrid population, we report that the genetic and molecular bases of variations in leaf growth heterosis can be explained by the varied expression levels of growth-regulating genes resulting from distinct sets of heterozygous eQTLs carried by the half -sibling hybrids. In F1 versus parent, the degree of up-regulated gene expression in the cell cycle pathway in the shoot apex and the photosynthesis pathway in true leaf positively correlates with true leaf area heterosis level, and this is affected by the accumulation of superior heterozygous eQTLs. This was further corroborated by the major contribution of increased photosynthetic cell number to leaf area heterosis.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available