biorxiv.org

In situ architecture of plasmodesmata in Physcomitrium patens resolved by cryo-electron tomography - Nature Plants

Using cryo-electron tomography, the authors reveal how plasmodesmata (plant cytoplasmic bridges) are gated by cell wall remodelling and how helical protein assemblies scaffold internal membranes, with...

nature.com

Status of mycorrhiza research in 2026

Mycorrhizal symbiosis improves the nutrition of most land plants and plays key roles in nutrient cycling and ecosystem function. To understand and leverage the biology of mycorrhizal symbioses for su...

doi.org

Arbuscular mycorrhizal colonization does not improve root hydraulic supply in tomato and pea

Arbuscular mycorrhizal symbiosis had no effect on root hydraulic conductance in 2 major crops, suggesting it does not improve drought tolerance by increasi

doi.org

Long-distance transport of siRNAs with functional roles in pollen development - Nature Plants

This study shows that many small RNAs in Capsella rubella pollen originate from maternal tissues. These mobile small RNAs support proper pollen development, revealing that non-cell-autonomous small RN...

nature.com

Hijacking a bacterial ABC transporter for genetic code expansion - Nature

Bacterial ATP-binding cassette (ABC) transporters can be utilized and engineered to transport non-canonical amino acids into Escherichia coli for highly efficient synthesis of proteins with novel func...

nature.com

Plant-associated fungi co-opt ancient antimicrobials for host manipulation

Evolutionary histories of effector proteins secreted by fungal pathogens to mediate plant colonization remain largely elusive. While most functionally characterized effectors modulate plant immunity, ...

biorxiv.org

Fertilization-dependent phloem end gate regulates seed size

"Seed formation is essential for plant propagation and food production. We present a novel mechanism for the regulation of seed size by a newly identified “gate” at the chalazal end of the ovule regulating nutrient transport into the developing seed. This gate is blocked by callose deposition in unfertilized mature ovules (closed state), but the callose is removed after central cell fertilization, allowing nutrient transport into the seed (open state). However, if fertilization fails, callose deposition persists, preventing transportation of nutrients from the funiculus. A mutant in an ovule-expressed β-1,3-glucanase gene (AtBG_ppap) showed incomplete callose degradation after fertilization and produced smaller seeds, apparently due to its partially closed state. By contrast, an AtBG_ppap overexpression line produced larger seeds due to continuous callose degradation, fully opening the gate for nutrient transport into the seed. The mechanism was also identified in rice, indicating that it potentially could be applied widely to angiosperms to increase seed size."

cell.com

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Tissue-like multicellular development triggered by mechanical compression in archaea

The advent of clonal multicellularity is a critical evolutionary milestone, seen often in eukaryotes, rarely in bacteria, and only once in archaea. We show that uniaxial compression induces clonal mul...

science.org

LysM-RLK plays an ancestral symbiotic function in plants

Arbuscular mycorrhiza (AM) with soilborne Glomeromycota fungi was pivotal in the conquest of land by plants almost half a billion years ago. In flowering plants, it is hypothesised that AM is initiate...

biorxiv.org

Identification of regulatory promoter sequences directing MtCP6 transcription at the onset of nodule senescence in Medicago truncatula

### Competing Interest Statement The authors have declared no competing interest.

biorxiv.org