Controlling where gibberellin acts reveals how the plant hormone coordinates root growth
Plant hormones influence growth and development by acting on specific cells and tissues. However, determining precisely where and when a hormone needs to act has been challenging because conventional hormone treatment generally activates signaling throughout the plant.
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该研究用合成GA配体与改造受体配对，在拟南芥根中实现按细胞层、按时间激活GA信号，证实根伸长需内皮层与表皮协同，且合成位点与作用位点可不一致，为组织特异调控作物生长提供工具，但尚未在作物验证。
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