Abstract
Rice is an important food crop, and the leaf angle is regulated by phytohormonal pathway and the non-phytohormonal pathway, which is an important agronomic trait for plant type formation and yield formation. Studies have shown that OsOFP8 was involved in the Brassinosteroid (BR) response pathway and positively regulated the rice leaf angle. In order to further explore the transcriptional response of OsOFP8 in related metabolic pathways that regulate leaf development during rice growth. Comparative transcriptomic analysis of gene expression in leaves of OsOFP8-overexpressed (OE) and OsOFP8-RNA-interference (RNAi) transgenic seedlings and Zhonghua (japonica cv. ZH11) were performed using RNA sequencing (RNA-Seq). And 73,913,197, 92,056,850 and 64,179,231 clean reads were obtained for each sample. A total of 952 differentially expressed genes (DEGs) were compared between AZH11 versus OE8 and AZH11 versus RNAi8. The Gene Ontology functional classification and the Kyoto Encyclopedia of Genes and Genomes metabolic pathway analysis showed that plant hormone signal transduction, pentose and glucuronate interconversions, plant interaction and diterpenoid biosynthesis and other metabolic processes are involved in the regulation of leaf angle during leaf development in rice. The expression patterns of 8 DEGs, including the gene OsPP108/OsSIPP2C1 and LOC_Os03g06330, which are involved in plant hormone functions, the gene OsCML10 involved in signal transduction mechanisms in the plant-pathogen interaction pathway, and the gene OSIPK involved in cell wall/membrane/envelope biogenesis, might be related to the leaf angle by quantitative real-time PCR analysis were consistent with those of RNA-Seq. These results may provide transcriptomic guidance for further elucidating the regulation of OsOFP8 on rice leaf development, and may provide reference for further verifying that OsOFP8 regulates leaf angle through plant hormones and other pathways.
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Data availability
The datasets presented in this study can be found in online repositories. The names of the repository/repositories and accession number(s) can be found below: NCBI BioProject repository under the accession PRJNA778464.
Abbreviations
- OFPs:
-
OVATE family proteins
- OE:
-
Overexpression
- RNAi:
-
RNA-interference
- RNA-Seq:
-
RNA sequencing
- DEGs:
-
Differentially expressed genes
- GO:
-
Gene Ontology
- KEGG:
-
Kyoto Encyclopedia of Genes and Genomes
- qRT-PCR:
-
Quantitative real-time PCR
- ZH11:
-
Zhonghua
- BR/BL:
-
Brassinosteroid/Brassinolide
- IAA:
-
Indole-3-aceticacid
- GA:
-
Gibberellin
- Pfam:
-
Protein family
- COG:
-
Clusters of Orthologous Groups of proteins
- KO:
-
KEGG Ortholog database
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Acknowledgements
We thank the Beijing Biomarker Technologies Co, LTD (China) for excellent technical help in bioinformatics analysis.
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This work was supported by the National Natural Science Foundation of China (31970523).
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Hongjuan Chen performed the experiments and wrote the manuscript. Yao wan, Kaichong Teng, Binghuan Liu, Neng Zhao and Kaizun Xu provided assistance on the experimental analysis. Jianxiong L designed the experiments. All authors contributed to the article and approved the submitted version.
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Chen, H., Wan, Y., Teng, K. et al. The role of OsOFP8 gene in regulating rice leaf angle. J. Plant Biochem. Biotechnol. 32, 304–318 (2023). https://doi.org/10.1007/s13562-022-00806-0
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DOI: https://doi.org/10.1007/s13562-022-00806-0