Nonadditive gene expression contributing to heterosis in partially heterozygous maize hybrids is predominantly regulated from heterozygous regions DOI Creative Commons
Marion Pitz, Jutta A. Baldauf, Hans‐Peter Piepho

и другие.

New Phytologist, Год журнала: 2025, Номер unknown

Опубликована: Апрель 7, 2025

Summary Hybrids often perform better than their homozygous parents, a phenomenon that is commonly referred to as heterosis. Heterosis widely utilized in modern agriculture, although its molecular basis not very well understood. In this study, we backcrossed an intermated recombinant inbred line population of maize ( Zea mays L.) with parental lines B73 and Mo17. The resulting hybrids exhibited different degrees heterozygosity We identified nonadditively expressed genes, which are differently from mid‐parental level. addition, surveyed regulation by investigating expression quantitative trait loci (eQTL). Nonadditively genes explain up 27% heterotic variance the backcross hybrids. Furthermore, regulated almost exclusively heterozygous regions genome. observed nonadditive patterns distinctly depending on genetic origin higher parent. As consequence, these regulatory regimes lead gene activity most demonstrated contribute heterosis mode might translate phylogenetic distance into vigorous Based our results, hypothesize diverging preferences beneficial for selecting combinations hybrid breeding.

Язык: Английский

Nonadditive gene expression contributing to heterosis in partially heterozygous maize hybrids is predominantly regulated from heterozygous regions DOI Creative Commons
Marion Pitz, Jutta A. Baldauf, Hans‐Peter Piepho

и другие.

New Phytologist, Год журнала: 2025, Номер unknown

Опубликована: Апрель 7, 2025

Summary Hybrids often perform better than their homozygous parents, a phenomenon that is commonly referred to as heterosis. Heterosis widely utilized in modern agriculture, although its molecular basis not very well understood. In this study, we backcrossed an intermated recombinant inbred line population of maize ( Zea mays L.) with parental lines B73 and Mo17. The resulting hybrids exhibited different degrees heterozygosity We identified nonadditively expressed genes, which are differently from mid‐parental level. addition, surveyed regulation by investigating expression quantitative trait loci (eQTL). Nonadditively genes explain up 27% heterotic variance the backcross hybrids. Furthermore, regulated almost exclusively heterozygous regions genome. observed nonadditive patterns distinctly depending on genetic origin higher parent. As consequence, these regulatory regimes lead gene activity most demonstrated contribute heterosis mode might translate phylogenetic distance into vigorous Based our results, hypothesize diverging preferences beneficial for selecting combinations hybrid breeding.

Язык: Английский

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