Department of Integrative Food, Bioscience and Biotechnology, Chonnam National University, Gwangju, Korea.
Department of Bioenergy Science and Technology, Chonnam National University, Gwangju, Korea.
Plant Signal Behav. 2023 Dec 31;18(1):2260638. doi: 10.1080/15592324.2023.2260638. Epub 2023 Sep 22.
Leucine-rich repeat-receptor kinases (LRR-RKs) perceive various endogenous peptide hormones that control plant growth and development. However, the majority of corresponding ligands and their direct ligand-binding receptors have not been identified yet. A recent study demonstrated that three LRR-RK PLANT PEPTIDE CONTAINING SULFATED TYROSINE RECEPTORS (PSYRs) act as ligand-receptors of the PSY family peptides that mediate the trade-off between the optimal plant growth and stress tolerance responses. The genetic, biochemical, and transcriptome analyses suggested that PSYR1, PSYR2, and PSYR3 function as negative regulators of plant growth in the absence of PSY peptides and induce stress tolerance responses, whereas the PSY family peptides repress PSYR signaling, allowing plant growth. This trade-off mechanism between plant growth and stress responses mediated by the PSY-PSYR signaling module allows plants to survive under ever changing environmental stresses.
富含亮氨酸重复受体激酶（LRR-RK）能够感知各种控制植物生长和发育的内源性肽类激素。然而，大多数相应的配体及其直接的配体结合受体尚未被鉴定。最近的一项研究表明，三个 LRR-RK 植物肽含硫酸酪氨酸受体（PSYR）作为 PSY 家族肽的配体-受体，介导植物生长和应激耐受性之间的权衡。遗传、生化和转录组分析表明，PSYR1、PSYR2 和 PSYR3 在没有 PSY 肽的情况下作为植物生长的负调节剂，并诱导应激耐受性反应，而 PSY 家族肽抑制 PSYR 信号，从而允许植物生长。这种由 PSY-PSYR 信号模块介导的植物生长和应激反应之间的权衡机制使植物能够在不断变化的环境压力下生存。
