The plant hormone strigolactone (SL) is important for many processes in plants, but its molecular mode of action has been difficult to elucidate. A new discovery has identified the SPL transcription factor, IPA1, as a crucial component directly involved in SL signaling.

中文翻译：

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IPA1：SL信令的直接目标。

植物激素strigolactone（SL）对于植物中的许多过程都很重要，但是其分子作用方式一直难以阐明。一个新发现已将SPL转录因子IPA1鉴定为直接参与SL信号传导的重要组成部分。