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Genome-wide and comparative phylogenetic analysis of senescence-associated NAC transcription factors in sunflower (Helianthus annuus)

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Title Genome-wide and comparative phylogenetic analysis of senescence-associated NAC transcription factors in sunflower (Helianthus annuus)
 
Creator Bengoa Luoni, Sofia A.
Cenci, Alberto
Moschen, Sebastian
Nicosia, Salvador
Radonic, Laura M.
Sabio Garcia, Julia
Langlade, Nicolas B.
Vile, Denis
Vazquez Rovere, Cecilia
Fernandez, Paula
 
Subject senescence
transcription factors
phylogenetic analysis
plant breeding
avejentamiento
factores de transcripción
análisis filogenético
helianthus annuus
 
Description Leaf senescence delay impacts positively in grain yield by maintaining the photosynthetic area during the reproductive stage and during grain filling. Therefore a comprehensive understanding of the gene families associated with leaf senescence is essential. NAC transcription factors (TF) form a large plant-specific gene family involved in regulating development, senescence, and responses to biotic and abiotic stresses. The main goal of this work was to identify sunflower NAC TF (HaNAC) and their association with senescence, studying their orthologous to understand possible functional relationships between genes of different species. To clarify the orthologous relationships, we used an in-depth comparative study of four divergent taxa, in dicots and monocots, with completely sequenced genomes (Arabidopsis thaliana, Vitis vinifera, Musa acuminata and Oryza sativa). These orthologous groups provide a curated resource for large scale protein sequence annotation of NAC TF. From the 151 HaNAC genes detected in the latest version of the sunflower genome, 50 genes were associated with senescence traits. These genes showed significant differential expression in two contrasting lines according to an RNAseq assay. An assessment of overexpressing the Arabidopsis line for HaNAC001 (a gene of the same orthologous group of Arabidopsis thaliana ORE1) revealed that this line displayed a significantly higher number of senescent leaves and a pronounced change in development rate. This finding suggests HaNAC001 as an interesting candidate to explore the molecular regulation of senescence in sunflower.
 
Date 2021-12
2021-12-16T15:58:34Z
2021-12-16T15:58:34Z
 
Type Journal Article
 
Identifier Bengoa Luoni, S.A.; Cenci, A.; Moschen, S.; Nicosia, S.; Radonic, L.M.; Sabio Garcia, J.; Langlade, N.B.; Vile, D.; Vazquez Rovere, C.; Fernandez, P. (2021) Genome-wide and comparative phylogenetic analysis of senescence-associated NAC transcription factors in sunflower (Helianthus annuus). BMC Genomics 22: 893. 19 p. ISSN: 1471-2164
1471-2164
https://hdl.handle.net/10568/116803
https://doi.org/10.1186/s12864-021-08199-5
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format 19 p.
application/pdf
 
Publisher Springer Science and Business Media LLC
 
Source BMC Genomics