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| Epigenetic variation in maize agronomical traits for breeding and trait improvement |
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Epigenetics-mediated breeding (Epibreeding) involves engineering crop traits and stress responses through targeted manipulation of key epigenetic features to enhance agricultural productivity. While conventional breeding methods raise concerns about reduced genetic diversity, epibreeding propels crop improvement through epigenetic variations that regulate gene expression, ultimately impacting crop yield. Epigenetic regulation in crops encompasses various modes, including histone modification, DNA modification, RNA modification, non-coding RNA, and chromatin remodeling. |
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Daolei Zhang, Yujun Gan, Liang Le, Li Pu J. Genet Genomics; 2024 Feb 2: S1673-8527 (24)00028-6. doi: 10.1016/j.jgg.2024.01.006. Figure: Maize novel classification and agronomical traits (Qinglin Li 2023) AbstractEpigenetics-mediated breeding (Epibreeding) involves engineering crop traits and stress responses through targeted manipulation of key epigenetic features to enhance agricultural productivity. While conventional breeding methods raise concerns about reduced genetic diversity, epibreeding propels crop improvement through epigenetic variations that regulate gene expression, ultimately impacting crop yield. Epigenetic regulation in crops encompasses various modes, including histone modification, DNA modification, RNA modification, non-coding RNA, and chromatin remodeling. This review summarizes the epigenetic mechanisms underlying major agronomic traits in maize and identifies candidate epigenetic landmarks in the maize breeding process. We propose a novel strategy for improving maize yield through epibreeding, combining CRISPR/Cas-based epigenome editing technology and Synthetic Epigenetics (SynEpi). Finally, we discuss the challenges and opportunities associated with enhancing maize traits through epibreeding.
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