ArticleBMC genomics2024
Genome-wide identification and expression analysis of the SPL gene family and its response to abiotic stress in barley (Hordeum vulgare L.).
Article in BMC genomics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Genome-Wide Identification and Expression Profiling of the SPL Gene Family inPlants (Basel, Switzerland) · 2026Article
- Identification and characterization of 13 gene families encoding enzymes involved in flavonoid biosynthesis in barley and their roles under abiotic stress.Scientific reports · 2026Article
- Multifaceted Roles of SPL9 in Plant Growth, Development, and Stress Responses: A Review.Plants (Basel, Switzerland) · 2026Review
- Identification and characterization of the DREB family in Chinese yam and functional study of DoDREB28 under drought stress.BMC plant biology · 2026Article
- Genome-wide identification and expression analysis of the SPL transcription factor family and its expression characteristics in Elymus sibiricus.BMC plant biology · 2025Article
- Genome-Wide Identification and Expression Analysis of thePlants (Basel, Switzerland) · 2025Article
- Evolutionary Insights and Flowering Regulation ofPlants (Basel, Switzerland) · 2025Article
- Identification and Characterization of SQUAMOSA Promoter Binding Protein-like Transcription Factor Family Members inPlants (Basel, Switzerland) · 2025Article
- Unraveling the multifaceted roles of SPL transcription factors in leaf development.Frontiers in plant science · 2025Review
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Authors and funding
9 authors.
Funding
Abstract
backgroundSquamosa promoter-binding protein-like (SPL) is a plant-specific transcription factor that is widely involved in the regulation of plant growth and development, including flower and grain development, stress responses, and secondary metabolite synthesis. However, this gene family has not been comprehensively evaluated in barley, the most adaptable cereal crop with a high nutritional value.
resultsIn this study, a total of 15 HvSPL genes were identified based on the Hordeum vulgare genome. These genes were named HvSPL1 to HvSPL15 based on the chromosomal distribution of the HvSPL genes and were divided into seven groups (I, II, III, V, VI, VII, and VIII) based on the phylogenetic tree analysis. Chromosomal localization revealed one pair of tandem duplicated genes and one pair of segmental duplicated genes. The HvSPL genes exhibited the highest collinearity with the monocotyledonous plant, Zea mays (27 pairs), followed by Oryza sativa (18 pairs), Sorghum bicolor (16 pairs), and Arabidopsis thaliana (3 pairs), and the fewest homologous genes with Solanum lycopersicum (1 pair). The distribution of the HvSPL genes in the evolutionary tree was relatively scattered, and HvSPL proteins tended to cluster with SPL proteins from Z. mays and O. sativa, indicating a close relationship between HvSPL and SPL proteins from monocotyledonous plants. Finally, the spatial and temporal expression patterns of the 14 HvSPL genes from different subfamilies were determined using quantitative real-time polymerase chain reaction (qRT-PCR). Based on the results, the HvSPL gene family exhibited tissue-specific expression and played a regulatory role in grain development and abiotic stress. HvSPL genes are highly expressed in various tissues during seed development. The expression levels of HvSPL genes under the six abiotic stress conditions indicated that many genes responded to stress, especially HvSPL8, which exhibited high expression under multiple stress conditions, thereby warranting further attention.
conclusionIn this study, 15 SPL gene family members were identified in the genome of Hordeum vulgare, and the phylogenetic relationships, gene structure, replication events, gene expression, and potential roles of these genes in millet development were studied. Our findings lay the foundation for exploring the HvSPL genes and performing molecular breeding of barley.
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