What does this research mean for the field?

The transcription factor OsSPL10 regulates rice tillering by directly targeting the Aux/IAA gene OsIAA13 via the auxin signaling pathway, and its genome editing increases grain yield under both normal and drought stress conditions. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

The research aims to understand how the OsSPL10 transcription factor affects rice tillering and grain yield under drought stress.

May 17, 2026Open Access

The SPL transcription factor OsSPL10 regulates rice tillering via the auxin signaling pathway to stabilize grain yield under drought stress

Key Points

The research aims to understand how the OsSPL10 transcription factor affects rice tillering and grain yield under drought stress.
Genome editing of OsSPL10 in Shennong265 background
Field trials to assess grain yield performance
Evaluation of effective tiller numbers
OsSPL10 genome-edited plants showed a 14.22% increase in grain yield during field trials
Increased effective tiller numbers were observed under drought stress conditions
The findings highlight OsSPL10 as a target for breeding rice with stable yields.

Abstract

. OsSPL10 directly regulated the Aux/IAA gene OsIAA13 to modulate tillering through the auxin signaling pathway. Genome editing of OsSPL10 in the Shennong265 background showed a 14.22% increase in grain yield in a field trial. The OsSPL10 genome-edited plants also showed increased effective tiller numbers and grain yields under drought stress conditions. Our findings provide a potential target for breeding rice varieties with stable and high yields.

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