Plant Cell EnvironJClub
A Wheat-Specific miRNA, tae-miR5048, Fine-Tunes Plant Architecture and Drought Resilience Through Targeting Multiple Kinase Genes.
Plant, Cell & Environment · · Journal Article
Ao, Wu + more
Abstract ↗AI summary
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Overexpression of the wheat-specific miRNA tae-miR5048 enhances early root growth, accelerates reproductive transition, and improves drought resilience while optimizing plant architecture without compromising grain yield.
- Why it matters: Lineage-specific miRNAs in crops are poorly understood, limiting their use for breeding; this work addresses how a wheat-only miRNA can coordinate development and drought adaptation.
- What they did: The study used overexpression and CRISPR/Cas9 knockout of TaMIR5048 homoeologs, plus cytology, degradome sequencing, RLM-5' RACE, transient co-expression, and transcriptome profiling.
- The result: tae-miR5048 directly downregulates multiple kinase genes and shifts growth and stress pathways, enabling drought resilience across the growth cycle via osmolyte accumulation and reduced oxidative damage.
The findingWhy it mattersWhat they didThe result
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