ARF19 Condensation in the Arabidopsis Stomatal Lineage.
ARF19 Condensation in the Arabidopsis Stomatal Lineage.
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DOI：
10.17912/micropub.biology.000708
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发表时间：
2023
影响因子：
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通讯作者：
Morffy, Nicholas
中科院分区：
文献类型：
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作者：
Kuan, Chi;Strader, Lucia C;Morffy, Nicholas
植物激素生长素几乎调节植物发育的各个方面。对生长素的转录反应是由转录因子的生长素反应因子家族的活性驱动的。 ARF19 (AT1G19220) 在生长素信号通路中至关重要，之前已被证明可以通过蛋白质缩合来调节根部的生长素反应。然而，ARF19在其他器官中的凝结动力学尚未被描述。在拟南芥气孔谱系中，我们发现ARF19细胞质浓缩物富含保卫细胞和路面细胞，以及叶表皮中的终末分化细胞。这一结果与之前的研究一致，显示 ARF19 在成熟根组织中凝结。我们的数据表明，ARF19 在分化的叶表皮细胞中封存在细胞质凝结中，与根特异性凝结模式相似。
The phytohormone auxin regulates nearly every aspect of plant development. Transcriptional responses to auxin are driven by the activities of the AUXIN RESPONSE FACTOR family of transcription factors. ARF19 (AT1G19220) is critical in the auxin signaling pathway and has previously been shown to undergo protein condensation to tune auxin responses in the root. However, ARF19 condensation dynamics in other organs has not yet been described. In the Arabidopsis stomatal lineage, we found that ARF19 cytoplasmic condensates are enriched in guard cells and pavement cells, terminally differentiated cells in the leaf epidermis. This result is consistent with previous studies showing ARF19 condensation in mature root tissues. Our data reveal that the sequestration of ARF19 into cytoplasmic condensation in differentiated leaf epidermal cells is similar to root-specific condensation patterns.