Ueli Grossniklaus

ARABIDOPSIS Bsister and SEEDSTICK MADS-box transcription factors modulate maternal nutrient flow for seed development in Arabidopsis

The paper identifies MIKC MADS-box transcription factors ABS/TT16 and STK as regulators of maternal nutrient flow during ovule maturation and seed development in Arabidopsis.

Spatiotemporal Profiling of the Marchantia Sporophyte Reveals Ancestral Meristem Module and Dynamic Epigenetic Reprogramming during Early Embryogenesis

This study generates a spatiotemporal transcriptomic atlas of Marchantia sporophyte development, revealing ancestral gene expression programs and dynamic epigenetic changes during early embryogenesis.

BABYBOOM-like expression in the cowpea egg and central cellenables parthenogenesis, endosperm development, and viable haploid seed formation

The paper shows that expressing VuBBML1 in both egg and central cells of cowpea, along with central cell fertilization, enables parthenogenesis and viable haploid seed formation.

Pre-meiotic H1.1 degradation is essential for Arabidopsis gametogenesis

This study identifies regulatory pathways and residues critical for H1.1 degradation in Arabidopsis SMCs, showing its necessity for gametogenesis.

Comprehensive analysis of proteins associated with light responses and stress tolerance in the gametophyte of the fern Dryopteris affinis ssp. affinis

This study identifies 1,160 proteins in the gametophyte of Dryopteris affinis ssp. affinis associated with light responses, transport, and stress tolerance, providing insights into molecular mechanisms of adaptation.

Generating clonal seeds using non-reduction in female4 (nrf4), a novel meiotic mutant of maize

This paper describes a novel meiotic mutant in maize that produces unreduced female gametes, enabling clonal seed production when combined with another mutant, advancing synthetic apomixis research.

Weak evidence for heritable changes in response to selection by aphids in Arabidopsis accessions

The paper investigates epigenetic inheritance in Arabidopsis by simulating herbivory selection and finds weak evidence for heritable epigenetic variation, while highlighting issues with previous studies.

The Pollen Tube Penetrates the Synergid Cell by Formation of a Peritubular Membrane

This study uses 3D live imaging in Arabidopsis to show that pollen tubes invade synergid cells by forming a peritubular membrane, with calcium signaling playing a key role in this process.

Transcriptomic analyses in the gametophyte ofDryopteris affinis: apomixis and more

The paper identifies and analyzes proteins involved in apomixis and stress responses in the gametophyte of Dryopteris affinis using transcriptomic data.

Fast and flexible processing of large FRET image stacks using the FRET-IBRA toolkit

FRET-IBRA processes large FRET image stacks with flexibility and speed, providing accurate ratio images and background correction while maintaining high signal-to-noise ratio.

Changes in cell wall biochemistry affect the mechanical properties and growth rate of Arabidopsis pollen tubes

The paper combines experimental and simulation techniques to study how cell wall composition affects mechanical properties and growth rate in Arabidopsis pollen tubes.

The Polycomb group protein MEDEA controls cell proliferation and embryonic patterning in Arabidopsis

This study shows that MEA, a Polycomb group protein in Arabidopsis, is essential for embryonic patterning and cell lineage determination, independent of endosperm function.

Histone H1 protects telomeric repeats from H3K27me3 invasion in Arabidopsis

This paper shows that H1 prevents H3K27me3 accumulation at telomeres and ITRs in Arabidopsis by restricting DNA accessibility to TRB proteins, while promoting PRC2 activity at genes.

Cell Type-specific Genome Scans of DNA Methylation Diversity Indicate an Important Role for Transposable Elements

The paper uses Jensen-Shannon divergence to analyze DNA methylation diversity in Arabidopsis thaliana, finding that transposable elements influence methylation variation across cell types.

Invasive DNA elements modify nuclear architecture by KNOT-Linked Silencing in plants

The paper shows that transgene silencing in Arabidopsis is linked to the KNOT, a 3D chromatin structure, and describes a novel silencing mechanism called KNOT-Linked Silencing (KLS).