Imprinting but not cytonuclear interactions determines seed size heterosis in Arabidopsis hybrids

• Published in: Plant physiology (Bethesda) Vol. 195; no. 2; pp. 1214 - 1228
• Main Authors: June, Viviana, Song, Xiaoya, Chen, Z Jeffrey
• Format: Journal Article
• Language: English
• Published: United States 31.05.2024
• Subjects: Arabidopsis - genetics; Arabidopsis - growth & development; Arabidopsis - metabolism; Arabidopsis Proteins - genetics; Arabidopsis Proteins - metabolism; Cell Nucleus - genetics; Cell Nucleus - metabolism; Cytoplasm - genetics; Cytoplasm - metabolism; Endosperm - genetics; Endosperm - growth & development; Endosperm - metabolism; Gene Expression Regulation, Plant; Genomic Imprinting - genetics; Hybrid Vigor - genetics; Hybridization, Genetic; Seeds - genetics; Seeds - growth & development

The parent-of-origin effect on seeds can result from imprinting (unequal expression of paternal and maternal alleles) or combinational effects between cytoplasmic and nuclear genomes, but their relative contributions remain unknown. To discern these confounding factors, we produced cytoplasmic-nucle...