Scientists pinpointed a gene in rice that helps control how tall seedlings grow in their first few weeks of life, potentially offering a new target for breeding stronger, faster-establishing rice crops.
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32 genomic regions (QTLs) across multiple rice chromosomes collectively control seedling height measured from 6 to 24 days after sowing.
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A single gene, Os06g0282000 on chromosome 6, encodes a sugar-transferring enzyme (UGT) whose expression was consistently higher in tall seedling lines and increased sharply between 12–24 days after sowing.
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Comparative analysis found 51 related UGT genes in rice, with phylogenetic evidence linking this gene family to plant growth regulation via phytohormone balance.
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