Journal
FRONTIERS IN PLANT SCIENCE
Volume 13, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fpls.2022.883654
Keywords
FAR1; FHY3; transcription factors; Eucalyptus grandis; salt stress; temperature stress
Categories
Funding
- National Natural Science Foundation of China [32170380]
- Fujian Agriculture and Forestry University Forestry Peak Discipline Construction Project [71201800739]
- Science and Technology Program of Fujian Province [2019N5008]
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In this study, the FAR-RED ELONGATED HYPOCOTYLS3 (FHY3) and FAR-RED IMPAIRED RESPONSE1 (FAR1) genes were identified and characterized in Eucalyptus grandis. The study analyzed the gene structures, protein characteristics, 3D models, phylogenetic relationships, and promoter cis-elements of the FAR1/FHY3 gene family. The results showed differential gene expression and response to salt and temperature stresses. These findings contribute to the understanding of the evolution and function of the FAR1/FHY3 genes in E. grandis.
FAR-RED ELONGATED HYPOCOTYLS3 (FHY3) and its homolog FAR-RED IMPAIRED RESPONSE1 (FAR1), which play pivotal roles in plant growth and development, are essential for the photo-induced phyA nuclear accumulation and subsequent photoreaction. The FAR1/FHY3 family has been systematically characterized in some plants, but not in Eucalyptus grandis. In this study, genome-wide identification of FAR1/FHY3 genes in E. grandis was performed using bioinformatic methods. The gene structures, chromosomal locations, the encoded protein characteristics, 3D models, phylogenetic relationships, and promoter cis-elements were analyzed with this gene family. A total of 33 FAR1/FHY3 genes were identified in E. grandis, which were divided into three groups based on their phylogenetic relationships. A total of 21 pairs of duplicated repeats were identified by homology analysis. Gene expression analysis showed that most FAR1/FHY3 genes were differentially expressed in a spatial-specific manner. Gene expression analysis also showed that FAR1/FHY3 genes responded to salt and temperature stresses. These results and observation will enhance our understanding of the evolution and function of the FAR1/FHY3 genes in E. grandis and facilitate further studies on the molecular mechanism of the FAR1/FHY3 gene family in growth and development regulations, especially in response to salt and temperature.
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