Plant Elicitor Peptides Regulate Root Hair Development in Arabidopsis

    February 2024 in “ Frontiers in plant science ”
    Yanping Jing, Fugeng Zhao, Ke Lai, Fang Sun, Chao Sun, Xingyue Zou, Min Xu, Aigen Fu, Rouhallah Sharifi, Jian Chen, Xinglong Zheng, Sheng Luan
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    TLDR Peps help Arabidopsis plants grow more root hairs by affecting specific genes and calcium signaling.
    Plant Elicitor Peptides (Peps) were found to enhance root hair growth in Arabidopsis independently of their known receptors, PEPR1 and PEPR2. The study revealed that several PROPEP gene promoters are active in root hairs, with PROPEP2 being crucial for root hair development. Disruption of the PROPEP2 gene significantly reduced root hair density and length. PROPEP2 influences root hair formation by modulating CPC and GL2 expression, affecting cell-fate determination, and involves calcium signaling in the process. These findings highlight a new role for Peps in promoting root hair development.
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