Genome-Wide Identification and Expression Analysis of Kiwifruit Leucine-Rich Repeat Receptor-Like Proteins Reveal Their Roles in Biotic and Abiotic Stress Responses

• Published in: International journal of molecular sciences Vol. 25; no. 8; p. 4497
• Main Authors: Cao, Yingying, Zhang, Congxiao, Liu, Fang, Li, Dawei, Zhang, Aidi, Li, Li, Zhang, Xiujun
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 19-04-2024
• Subjects: Abiotic stress; Actinidia - genetics; Actinidia - metabolism; Agricultural production; Amino acids; Analysis; Cellular signal transduction; Chromosomes; differentially expressed gene; DNA binding proteins; Fruit - genetics; Fruit - metabolism; Gene expression; Gene Expression Profiling; Gene Expression Regulation, Plant; Genes; Genome, Plant; Genomes; Genomics; Health aspects; Infections; Information management; Kinases; kiwifruit; Leucine-Rich Repeat Proteins; Localization; LRR-RLP; Maximum likelihood method; Microorganisms; Phylogenetics; Phylogeny; Physiological aspects; Plant growth; plant immunity; Plant physiology; Plant Proteins - genetics; Plant Proteins - metabolism; Protein Interaction Maps - genetics; Proteins; Signal transduction; stress; Stress, Physiological - genetics; Synteny; Transcriptome; China; stress; differentially expressed gene; LRR-RLP; plant immunity; kiwifruit
• ISSN: 1422-0067; 1661-6596; 1422-0067
• DOI: 10.3390/ijms25084497

Leucine-rich repeat receptor-like proteins (
), a major group of receptor-like proteins in plants, have diverse functions in plant physiology, including growth, development, signal transduction, and stress responses. Despite their importance, the specific roles of kiwifruit
in response to biotic and abiotic stresses remain poorly understood. In this study, we performed family identification, characterization, transcriptome data analysis, and differential gene expression analysis of kiwifruit
. We identified totals of 101, 164, and 105
in
'Hongyang',
'Huate', and
'Red5', respectively. Synteny analysis revealed that the expansion of kiwifruit
was primarily attributed to segmental duplication events. Based on RNA-seq data from pathogen-infected kiwifruits, we identified specific
genes potentially involved in different stages of pathogen infection. Additionally, we observed the potential involvement of kiwifruit
in abiotic stress responses, with upstream transcription factors possibly regulating their expression. Furthermore, protein interaction network analysis unveiled the participation of kiwifruit LRR-RLP in the regulatory network of abiotic stress responses. These findings highlight the crucial roles of
in mediating both biotic and abiotic stress responses in kiwifruit, offering valuable insights for the breeding of stress-resistant kiwifruit varieties.