数字农科院2.0

ZmSPL12 enhances root penetration and elongation in maize under compacted soil conditions by responding to ethylene signaling

文献类型： 外文期刊

作者： 胥华;;郑智刚;;马蕾;;张青云;;靳礼安;;张可;;邹俊杰;;哈达;;徐妙云

作者机构：

关键词： maize; root cap; transcription factor; compacted soil; ethylene

期刊名称： Plants-Basel

ISSN：

年卷期： 2025 年

页码：

收录情况： SCIE（2025版）

摘要： Soil compaction poses a significant challenge in modern agriculture, as it constrains root development and hinders crop growth. The increasing evidence indicated that various phytohormones collaborate in distinct root zones to regulate root growth in compacted soils. However, the study of root development in maize under such conditions has been relatively limited. Here, we identified that the ZmSPL12 gene, belonging to the SPL transcription factor family, plays a crucial and positive role in regulating root development in the compacted soil. Specifically, the overexpression of ZmSPL12 resulted in significantly less inhibition of root growth than the wild-type plants when subjected to soil compaction. Histological analysis revealed that the capacity for root growth in compacted soil is closely associated with the development of the root cap. Further exploration demonstrated that ZmSPL12 modulates root growth through regulating ethylene signaling. Our findings underscored that ZmSPL12 expression level is induced by soil compaction and then enhances root penetration by regulating root cap and development, thereby enabling roots to thrive better in the compacted soil environment.

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