ArticleBMC plant biology2025
Identification of the citrus GRF gene family and its expression in fruit peel thickening mediated by gibberellin.
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Combined metabolome and transcriptome profiling provides insights into dynamic molecular control of lemon (Citrus Limon L.) peel development.BMC plant biology · 2025Article
- Genome-wide characterization of GRF-GIF transcriptional modules in kenaf (Hibiscus cannabinus L.) reveals their roles in plant development and multi-stress adaptation.Functional & integrative genomics · 2025Article
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Authors and funding
10 authors.
Funding
Abstract
backgroundGrowth-regulating factors (GRFs) play a crucial role in plant growth and development, particularly in cell division and expansion. Citrus fruit cracking, a prevalent issue, adversely impacts both yield and fruit quality. Gibberellins (GAs) are known to ameliorate citrus fruit cracking by inducing thicker peel formation, which is attributed to cell division and expansion. However, the mechanistic link between gibberellins and citrus peel thickening, and whether this process is mediated by GRF genes regulation, has not been definitively established.
resultsIn this study, 8 CsGRFs (Citrus sinensis), 11 CcGRFs (Citrus clementina), and 8 CgGRFs (Citrus grandis) were identified from the citrus genome which divided into six clusters, with the genes of the same cluster sharing similar gene structures. Cis-elements analysis revealed that the promoter regions of GRF genes contained numerous hormone-responsive elements. Tissue expression profiles showed that CsGRF genes had higher expression levels in young tissues, including early fruit tissues, one-year-leaf, ovules, and root tips. RNA-seq and qPCR analyses revealed that the expression levels of CsGRF3, 4, 7, and 8 were significantly regulated in response to GA
conclusionThis study systematically analyzed the characteristics of the citrus GRF gene family, as well as the changes in citrus peel thickness and the expression patterns of CsGRF genes under gibberellin treatment. These findings provide valuable insights for advancing research on the role of CsGRF genes in regulating citrus peel development, which could help reduce the occurrence of fruit cracking. CLINICAL TRIAL NUMBER: Not applicable.
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