From spore to gametophyte: Investigating morphological dynamics of hyaline cells and corresponding gene expression patterns in Sphagnum

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Publicado en:BMC Plant Biology vol. 25 (2025), p. 1
Autor principal: Guo, Xianlin
Otros Autores: Xie, Fumin, Wang, Chaojie, Fang, Kai, Xue, Dan, Liu, Liangfeng, Liu, Xinwei, Yang, Xiaohan, Huang, Yuchen, Han, Tianyao, Chen, Huai
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Springer Nature B.V.
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022 |a 1471-2229 
024 7 |a 10.1186/s12870-025-06770-w  |2 doi 
035 |a 3216560176 
045 2 |b d20250101  |b d20251231 
084 |a 58484  |2 nlm 
100 1 |a Guo, Xianlin 
245 1 |a From spore to gametophyte: Investigating morphological dynamics of hyaline cells and corresponding gene expression patterns in <i>Sphagnum</i> 
260 |b Springer Nature B.V.  |c 2025 
513 |a Journal Article 
520 3 |a BackgroundPeatlands play a vital role in mitigating climate change and maintaining global ecological balance. At the core of these ecosystems are Sphagnum mosses, which rely on their hyaline cells—specialized structures with exceptional water retention capacity—to stabilize wetland hydrology and support long-term ecosystem function. Despite their ecological importance, the molecular mechanisms underlying the development of these unique water retention cells remain poorly understood. This study focuses on S. capillifolium, examining morphological traits and gene expression dynamics across four developmental stages to uncover how gene regulation contributes to hyaline cell formation.ResultsDuring the transition from spore germination to mature gametophytes, significant morphological changes occur in the cell walls of hyaline cells, particularly their increased volume, which distinguishes them from chlorophyllous cells. Transcriptomic analyses revealed marked changes in gene expression related to the cell wall, apoplast, and extracellular regions during hyaline cell formation. Notably, genes associated with cell wall remodeling, such as EXO70, PME, and XTH genes, were significantly involved. Phylogenetic analysis uncovered evolutionary divergence in these genes, highlighting the unique evolutionary position of Sphagnum compared to vascular plants, forming an independent branch. Further protein structure analysis revealed distinct differences in the ligand-binding sites and hydrogen bond formation of EXO70, PME, and XTH proteins compared to vascular plants, which may account for the functional changes observed.ConclusionThis study reveals the gene expression patterns underlying hyaline cell development in Sphagnum capillifolium, with a focus on key genes involved in cell wall remodeling. The findings highlight significant evolutionary differences between Sphagnum and vascular plants, particularly regarding the unique functional and structural characteristics of EXO70, PME, and XTH genes. These insights provide a new perspective on the molecular mechanisms behind hyaline cell formation in Sphagnum, further enhancing our understanding of its role in regulating wetland hydrological environments. 
653 |a Climate change 
653 |a Cell walls 
653 |a Genes 
653 |a Biosynthesis 
653 |a Gene regulation 
653 |a Wetlands 
653 |a Developmental stages 
653 |a Peatlands 
653 |a Leaves 
653 |a Retention capacity 
653 |a Ecological balance 
653 |a Chloroplasts 
653 |a Molecular modelling 
653 |a Germination 
653 |a Ecological function 
653 |a Metabolism 
653 |a Transcriptomics 
653 |a Structural analysis 
653 |a Ecosystems 
653 |a Proteins 
653 |a Cells 
653 |a Ecology 
653 |a Binding sites 
653 |a Gene expression 
653 |a Carbon sequestration 
653 |a Hydrogen bonds 
653 |a Hydrology 
653 |a Climate change mitigation 
653 |a Retention 
653 |a Plants 
653 |a Spore germination 
653 |a Protein structure 
653 |a Gametophytes 
653 |a Structure-function relationships 
653 |a Apoplast 
653 |a Morphology 
653 |a Sphagnum 
653 |a Environmental 
700 1 |a Xie, Fumin 
700 1 |a Wang, Chaojie 
700 1 |a Fang, Kai 
700 1 |a Xue, Dan 
700 1 |a Liu, Liangfeng 
700 1 |a Liu, Xinwei 
700 1 |a Yang, Xiaohan 
700 1 |a Huang, Yuchen 
700 1 |a Han, Tianyao 
700 1 |a Chen, Huai 
773 0 |t BMC Plant Biology  |g vol. 25 (2025), p. 1 
786 0 |d ProQuest  |t Health & Medical Collection 
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856 4 0 |3 Full Text  |u https://www.proquest.com/docview/3216560176/fulltext/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch 
856 4 0 |3 Full Text - PDF  |u https://www.proquest.com/docview/3216560176/fulltextPDF/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch