Latest 77 Papers

Multi-Level Characterization Reveals Divergent Heat Response Strategies Across Wheat Genotypes of Different Ploidy

Authors: Arenas-M, A., Mino, I., Uauy, C., Calderini, D. F., Canales, J.

Date: 2026-01-23 · Version: 1
DOI: 10.64898/2026.01.22.701169

Category: Plant Biology

Model Organism: Multi-species

AI Summary

Field experiments combined with RNA sequencing revealed that wheat ploidy influences heat stress resilience, with tetraploid T. turgidum showing the smallest yield loss and hexaploid T. aestivum mounting the largest transcriptional response. Ploidy-dependent differences were observed in differential gene expression, alternative splicing—including hexaploid-specific exon skipping of NF‑YB—and co‑expression networks linked to grain traits, highlighting candidate pathways for breeding heat‑tolerant wheat.

heat stress wheat ploidy RNA sequencing differential gene expression alternative splicing

WITHDRAWN: The NLR immune receptor Roq1 recognizes the Pseudomonas syringae HopAG1 effector via its Nudix domain

Authors: Gorecka, M., Jonak, M., Grech-Baran, M., Steczkiewicz, K., Ochoa, J. C., Krepski, T., Zembek, P. B., Pawłowski, K., Krzymowska, M.

Date: 2026-01-19 · Version: 2
DOI: 10.1101/2025.06.13.659573

Category: Plant Biology

Model Organism: Nicotiana benthamiana

AI Summary

The study demonstrates that the Nicotiana benthamiana NLR Roq1, previously known to recognize the XopQ/HopQ1/RipB effector family, also detects the structurally distinct HopAG1 effector, leading to reduced bacterial growth and disease symptoms. Roq1-HopAG1 interaction was confirmed by co‑immunoprecipitation and attributed to the Nudix domain of HopAG1 binding a similar receptor interface as XopQ, suggesting broader effector recognition potential for Roq1 and other TNLs.

NLR Roq1 HopAG1 Nudix domain Nicotiana benthamiana

Physics-Informed Neural Network Methods for Predicting Plant Height Development

Authors: Shao, Y., van Eeuwijk, F., Peeters, C., Zumsteg, O., Athanasiadis, I., van Voorn, G.

Date: 2026-01-14 · Version: 1
DOI: 10.64898/2026.01.14.699475

Category: Plant Biology

Model Organism: Triticum aestivum

AI Summary

The study introduces a hybrid modeling framework that integrates a logistic ordinary differential equation with a Long Short-Term Memory neural network to form a Physics-Informed Neural Network (PINN) for predicting wheat plant height. Using only time and temperature as inputs, the PINN outperformed other longitudinal growth models, achieving the lowest average RMSE and reduced variability across multiple random initializations. The results suggest that embedding biological growth constraints within data‑driven models can substantially improve prediction accuracy for plant traits.

Physics-Informed Neural Network logistic ODE Long Short-Term Memory plant height prediction wheat

Root phenolics as potential drivers of preformed defenses and reduced disease susceptibility in a paradigm bread wheat mixture

Authors: Mathieu, L., Chloup, A., Marty, S., Savajols, J., Paysant-Le Roux, C., Launay-Avon, A., Martin, M.-L., Totozafy, J.-C., Perreau, F., Rochepeau, A., Rouveyrol, C., Petriacq, P., Morel, J.-B., Meteignier, L.-V., Ballini, E.

Date: 2026-01-14 · Version: 1
DOI: 10.64898/2026.01.13.699261

Category: Plant Biology

Model Organism: Triticum aestivum

AI Summary

The study created a system that blocks root‑mediated signaling between wheat varieties in a varietal mixture and used transcriptomic and metabolomic profiling to reveal that root chemical interactions drive reduced susceptibility to Septoria tritici blotch, with phenolic compounds emerging as key mediators. Disruption of these root signals eliminates both the disease resistance phenotype and the associated molecular reprogramming.

root-mediated interactions bread wheat Septoria tritici blotch transcriptomics metabolomics

Ultra large-scale 2D clinostats uncover environmentally derived variation in tomato responses to simulated microgravity

Authors: Hostetler, A. N., Kennebeck, E., Reneau, J. W., Birtell, E., Caldwell, D. L., Iyer-Pascuzzi, A. S., Sparks, E. E.

Date: 2026-01-13 · Version: 2
DOI: 10.1101/2025.05.16.654566

Category: Plant Biology

Model Organism: Solanum lycopersicum (tomato)

AI Summary

The study employed ultra large‑scale 2D clinostats to grow tomato (Solanum lycopersicum) plants beyond the seedling stage under simulated microgravity and upright control conditions across five sequential trials. Simulated microgravity consistently affected plant growth, but the magnitude and direction of the response varied among trials, with temperature identified as a significant co‑variant; moderate heat stress surprisingly enhanced growth under simulated microgravity. These results highlight the utility of large‑scale clinostats for dissecting interactions between environmental factors and simulated microgravity in plant development.

simulated microgravity ultra large-scale clinostat tomato (Solanum lycopersicum) heat stress plant growth interaction

The STA1-DOT2 interaction promotes nuclear speckle formation and splicing robustness in growth and heat stress responses

Authors: Kim, H., Yu, K.-j., Park, S. Y., Seo, D. H., Jeong, D.-H., Kim, W. T., Yun, D.-J., Lee, B.-h.

Date: 2026-01-12 · Version: 1
DOI: 10.64898/2026.01.11.698856

Category: Plant Biology

Model Organism: Arabidopsis thaliana

AI Summary

The study demonstrates that the interaction between spliceosomal proteins STA1 and DOT2 controls nuclear speckle organization, pre‑mRNA splicing efficiency, and heat‑stress tolerance in Arabidopsis thaliana. A missense mutation in DOT2 restores the weakened STA1‑DOT2 interaction in the sta1‑1 mutant, linking interaction strength to speckle formation and transcriptome‑wide intron retention under heat stress, while pharmacological inhibition of STA1‑associated speckles reproduces the mutant phenotypes. These findings reveal a heat‑sensitive interaction node that couples spliceosome assembly to nuclear speckle dynamics and splicing robustness.

spliceosome nuclear speckles STA1‑DOT2 interaction heat stress Arabidopsis thaliana

A chloroplast-localized protein AT4G33780 regulates Arabidopsis development and stress-associated responses

Authors: Yang, Z.

Date: 2026-01-03 · Version: 1
DOI: 10.64898/2026.01.03.697459

Category: Plant Biology

Model Organism: Arabidopsis thaliana

AI Summary

The study characterizes the chloroplast‑localized protein AT4G33780 in Arabidopsis thaliana using CRISPR/Cas9 knockout and overexpression lines, revealing tissue‑specific expression and context‑dependent effects on seed germination, seedling growth, vegetative development, and root responses to nickel stress. Integrated transcriptomic (RNA‑seq) and untargeted metabolomic analyses show extensive transcriptional reprogramming—especially of cell‑wall genes—and altered central energy metabolism, indicating AT4G33780 coordinates metabolic state with developmental regulation rather than controlling single pathways.

AT4G33780 chloroplast regulator Arabidopsis thaliana transcriptomics metabolomics

Alternative splicing of PIF4 regulates plant development under heat stress

Authors: Gonzalez, M. N., Alary, B., Szakonyi, D., Laloum, T., Duque, P., Martin, G.

Date: 2025-12-18 · Version: 1
DOI: 10.64898/2025.12.17.694898

Category: Plant Biology

Model Organism: Arabidopsis thaliana

AI Summary

The study identified a heat‑responsive exon‑skipping event in the basic Helix‑Loop‑Helix domain of the transcription factor PIF4, which reduces PIF4 activity and promotes photomorphogenic traits in etiolated seedlings. This reveals a novel post‑transcriptional mechanism by which plants modulate PIF4 function during heat stress.

PIF4 alternative splicing heat stress photomorphogenesis post‑transcriptional regulation

QTL for Heat-Induced Stomatal Anatomy Underpin Gas Exchange Variation in Field-Grown Wheat

Authors: Chaplin, E. D., Tanaka, E., Merchant, A., Sznajder, B., Trethowan, R., Salter, W. T.

Date: 2025-12-17 · Version: 1
DOI: 10.64898/2025.12.16.694723

Category: Plant Biology

Model Organism: Triticum aestivum

AI Summary

The study evaluated how stomatal anatomy and physiological efficiency influence wheat heat tolerance across multi‑environment field trials with 200 genotypes, using early versus delayed sowing to impose temperature stress. Findings revealed a decoupling between anatomical capacity (gsmax) and actual conductance (gs, gse) under heat, plastic shifts toward smaller, denser stomata, and identified 125 QTL linked to stomatal traits, suggesting targets for breeding climate‑resilient wheat.

stomatal conductance heat stress wheat (Triticum aestivum) QTL mapping stomatal anatomy

Evolution of HMA-integrated tandem kinases accompanied by expansion of target pathogens

Authors: Asuke, S., Tagle, A. G., Hyon, G.-S., Koizumi, S., Murakami, T., Horie, A., Niwamoto, D., Katayama, E., Shibata, M., Takahashi, Y., Islam, M. T., Matsuoka, Y., Yamaji, N., Shimizu, M., Terauchi, R., Hisano, H., Sato, K., Tosa, Y.

Date: 2025-12-16 · Version: 1
DOI: 10.64898/2025.12.15.692859

Category: Plant Biology

Model Organism: Multi-species

AI Summary

The study cloned the resistance genes Rmo2 and Rwt7 from barley and wheat, revealing them as orthologous tandem kinase proteins (TKPs) with an N‑terminal heavy metal‑associated (HMA) domain. Domain‑swapping experiments indicated that the HMA domain dictates effector specificity, supporting a model of TKP diversification into paralogs and orthologs that recognize distinct pathogen effectors.

tandem kinase proteins HMA domain disease resistance barley wheat
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