Abstract
Teopod1 (Tp1), Teopod2 (Tp2), and Early phase change (Epc) have profound effects on the timing of vegetative phase change in maize. Gain-of-function mutations in Tp1 and Tp2 delay all known phase-specific vegetative traits, whereas loss-of-function mutations in Epc accelerate vegetative phase change and cause shoot abortion in some genetic backgrounds. Here, we show that Tp1 and Tp2 likely represent cis-acting mutations that cause the overexpression of Zma-miR156j and Zma-miR156h, respectively. Epc is the maize ortholog of HASTY, an Arabidopsis gene that stabilizes miRNAs and promotes their intercellular movement. Consistent with its pleiotropic phenotype and epistatic interaction with Tp1 and Tp2, epc reduces the levels of miR156 and several other miRNAs.
Original language | English (US) |
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Article number | jkad179 |
Journal | G3: Genes, Genomes, Genetics |
Volume | 13 |
Issue number | 10 |
DOIs | |
State | Published - Oct 2023 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© The Author(s) 2023.
Keywords
- EPC
- HASTY
- Teopod
- early phase change
- miR156
- plant genetics and genomics
- vegetative phase change
PubMed: MeSH publication types
- Journal Article
- Research Support, U.S. Gov't, Non-P.H.S.
- Research Support, N.I.H., Extramural