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phytohormone-regulation

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Identification of a UDP-glucuronosyl/UDP-glucosyltransferase involved in rice seedling height regulation.

PubMed · 2026-05-28

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.

1

32 genomic regions (QTLs) across multiple rice chromosomes collectively control seedling height measured from 6 to 24 days after sowing.

2

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.

3

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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