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논문 기본 정보

자료유형
학술저널
저자정보
Choi Jae-Han (Chungnam National University) Kim Ji-Woo (Chungnam National University) Oh Man-Ho (Chungnam National University)
저널정보
한국유전학회 Genes & Genomics Genes & Genomics Vol.44 No.12
발행연도
2022.12
수록면
1,477 - 1,485 (9page)
DOI
10.1007/s13258-022-01292-3

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Background Plant growth and development are complex processes modulated by numerous genes, transcription factors, hormones, and peptides. Several reports implicate the membrane-localized Catharanthus roseus receptor-like kinase1 (CrRLK1L) protein, FERONIA (FER), involved in plant development. However, protein targets of FER remain poorly characterized. Objective FER recombinant proteins were analyzed, and FER-interacting proteins were identified, to better understand the function of the Arabidopsis thaliana FER (AtFER) gene in plant development. Methods AtFER-interacting proteins were identified through Yeast-Two Hybrid (Y2H) and validated by bimolecular fluorescence complementation (BiFC). Autophosphorylation activity was evaluated in AtFER site-directed and deletion mutants. Results AtFER cytoplasmic kinase domain (Flag-FER-CD) is autophosphorylated at the Thr residue (s), with T559 and T664 as important sites for AtFER kinase activity. In addition, the carboxy terminal region is essential for AtFER kinase activity. Y2H identified an Armadillo (ARM)-repeat protein (At4g16490) with tandem copies of a degenerate protein sequence motif, a U-BOX 9 (PUB9, At3g07360), IQ-DOMAIN 7 (IQD7, At1g17480), and heteroglycan glucosidase 1 (HGL1, At3g23640) as AtFER-interacting proteins. BiFC confirmed the in vivo interactions between these four proteins and AtFER in tobacco (Nicotiana benthamiana) leaf transient expression assays. The RAPID ALKALINIZATION FACTOR1 (RALF1) peptide, which is a FER ligand, induced the expression of genes encoding the four AtFER-interacting proteins. Conclusion The AtFER-interacting proteins identified in this study are likely involved in FER-mediated intracellular signaling pathways that are essential in plant growth and development, and possibly plant immunity.

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