Ivan M De-la-Cruz et al. explored the flowering responses of the woodland strawberry to local climate and reduced precipitation along a European latitudinal gradient.
#Drought | #FragariaVesca | #GrowingDegreeDays | #OnsetOfFlowering | #Photoperiod | #PlantPhenology
⭐ Flowering responses of the #FragariaVesca ➡️ local climate and reduced precipitation along a European latitudinal gradient
#Drought | #GrowingDegreeDays | #OnsetOfFlowering | #Photoperiod | #PlantPhenology
【🎉Latest accepted article】
Flowering responses of the woodland strawberry to local climate and reduced precipitation along a European latitudinal gradient
#Drought | #FragariaVesca | #GrowingDegreeDays | #Photoperiod | #PlantPhenology | #OnsetOfFlowering
Transposable elements (TEs) constitute a major portion of plant genomes and play key roles in shaping genome architecture, regulating gene expression, and driving genome evolution. In this study, we generated a comprehensive and curated TE library for the woodland strawberry (Fragaria vesca) by integrating two bioinformatic pipelines (EDTA and DeepTE). Our annotation revealed that TEs account for approximately 37% of the F. vesca genome. Analysis of TE-derived inverted repeats (IRs) and miniature inverted-repeat transposable elements (MITEs) demonstrated their association with 24-nt small interfering RNA (siRNA) production and differential DNA methylation patterns across tissues, suggesting a role in the epigenetic regulation of gene expression, particularly during fruit ripening. This MITE-mediated epigenetic regulatory mechanism was confirmed by evaluating gene expression and chromatin organization at FvH4\_7g18570, which encodes the alcohol acyl transferase (FvAAT1). Three MITEs located upstream or downstream of the FvAAT1 coding sequence were shown to influence epigenetically this gene expression. Furthermore, we analyzed 210 re-sequenced accessions from the F. vesca European germplasm collection to identify and annotate TE insertion and deletion polymorphisms. A principal component analysis (PCA) based on these polymorphisms revealed subpopulation structures that reflect geographic origins. A genome-wide association study (GWAS) uncovered significant associations between specific TE polymorphisms and economically important fruit traits, including aroma-related volatile compounds and fruit size. Among them, the insertion of a hAT MITE near FvH4\_2g00610 correlated with increased levels of γ-decalactone, a desirable aroma compound in strawberries. These findings underscore the functional significance of TE-derived elements as key contributors to phenotypic diversity through novel regulatory functions. By integrating TE polymorphisms into population-genomic and functional studies, this work provides valuable insights into strawberry fruit development and quality traits. It also highlights the potential of harnessing TE-mediated variation in breeding initiatives and genome editing strategies to improve fruit quality. ### Competing Interest Statement The authors have declared no competing interest.
Maturité / Ripeness (https://wk3.org/uploads/images/18dd36113462ffaa6e32.jpg) Qui sucre les fraises Souvent ne les peut cueillir C'est qu'elles sont basses ! These, you birds won't have! Don't my scratched calves deserve it? I spare one for you #photo #photographie #photography #maphoto #myphoto #mywork #CC #BY-NC-ND 4.0 #nature #fraise #strawberry #FragariaVesca #haiku #HaikuDominical #HaikuSunday
Journal of Plant Ecology
ADG
Jukka
📷 Morten
Amelia Cervera 🧬
Norz