Latest 30 Papers

Unveiling the molecular identity of plant autophagic compartments: A proteo-lipidomic study in Arabidopsis thaliana

Authors: Lupette, J., Chambaud, C., Buridan, M., Castets, J., Wattelet-Boyer, V., Toboso Moreno, I., Kosuth, T., Yatim, C., Dittrich-Domergue, F., Gros, V., Jouhet, J., Claverol, S., Herice, C., Melser, S., Genva, M., Fouillen, L., Bessoule, J.-J., Domergue, F., Bernard, A.

Date: 2025-08-28 · Version: 1
DOI: 10.1101/2025.08.25.671700

Category: Plant Biology

Model Organism: Arabidopsis thaliana

AI Summary

The study introduces a native‑condition method combining cell fractionation and immuno‑isolation to purify autophagic compartments from Arabidopsis, followed by proteomic and lipidomic characterisation of the isolated phagophore membranes. Proteomic profiling identified candidate proteins linked to autophagy, membrane remodeling, vesicular trafficking and lipid metabolism, while lipidomics revealed a predominance of glycerophospholipids, especially phosphatidylcholine and phosphatidylglycerol, defining the unique composition of plant phagophores.

autophagy phagophore membrane proteomics lipidomics membrane remodeling

DECREASE IN DNA METHYLATION 1-mediated epigenetic regulation maintains gene expression balance required for heterosis in Arabidopsis thaliana

Authors: Matsuo, K., Wu, R., Yonechi, H., Murakami, T., Takahashi, S., Kamio, A., Akter, M. A., Kamiya, Y., Nishimura, K., Matsuura, T., Tonosaki, K., Shimizu, M., Ikeda, Y., Kobayashi, H., Seki, M., Dennis, E. S., Fujimoto, R.

Date: 2025-08-26 · Version: 1
DOI: 10.1101/2025.08.21.671646

Category: Plant Biology

Model Organism: Arabidopsis thaliana

AI Summary

The study demonstrates that the chromatin remodeler DDM1 is essential for biomass heterosis in Arabidopsis thaliana hybrids, as loss of DDM1 function leads to reduced rosette growth and extensive genotype‑specific transcriptomic and DNA methylation changes. Whole‑genome bisulfite sequencing revealed widespread hypomethylation in ddm1 mutants, while salicylic acid levels were found unrelated to heterosis, indicating that epigenetic divergence, rather than SA signaling, underpins hybrid vigor.

heterosis DNA methylation DDM1 Arabidopsis thaliana transcriptomics

A dual component system instructs membrane hydrolysis during the final stages of plant autophagy

Authors: Castets, J., Buridan, M., Toboso Moreno, I., Sanchez de Medina Hernandez, V., Gomez, R. E., Dittrich-Domergue, F., Lupette, J., Chambaud, C., Pascal, S., Ibrahim, T., Bozkurt, T. O., Dagdas, Y., Domergue, F., Joubes, J., Minina, A. E. A., Bernard, A.

Date: 2025-08-02 · Version: 1
DOI: 10.1101/2025.08.01.668046

Category: Plant Biology

Model Organism: Arabidopsis thaliana

AI Summary

The study identifies the Arabidopsis phospholipases LCAT3 and LCAT4 as essential components that hydrolyze membranes of autophagic bodies within the vacuole, a critical step for autophagy completion. Double mutants lacking both enzymes accumulate autophagic bodies and display diminished autophagic activity, while in vivo reconstitution shows LCAT3 initiates membrane hydrolysis, facilitating LCAT4’s function.

autophagy phospholipase Arabidopsis thaliana vacuolar lumen LCAT3/LCAT4

A sublethal drought and rewatering time course reveals intricate patterning of responses in the annual Arabidopsis thaliana

Authors: Fitzek-Campbell, E., Psaroudakis, D., Weisshaar, B., Junker, A., Braeutigam, A.

Date: 2025-07-27 · Version: 1
DOI: 10.1101/2025.07.25.666782

Category: Plant Biology

Model Organism: Arabidopsis thaliana

AI Summary

The study applied a progressive, sublethal drought treatment to Arabidopsis thaliana, collecting time‑resolved phenotypic and transcriptomic data. Machine‑learning analysis revealed distinct drought stages driven by multiple overlapping transcriptional programs that intersect with plant aging, and identified high‑explanatory‑power transcripts as biomarkers rather than causal agents.

drought stress Arabidopsis thaliana transcriptomics high‑throughput phenotyping biomarker transcripts

Enhancement of Arabidopsis growth by Enterobacter sp. SA187 under elevated CO2 is dependent on ethylene signalling activation and primary metabolism reprogramming

Authors: Ilyas, A., Mauve, C., Pateyron, S., Paysant-Le Roux, C., Bigeard, J., Hodges, M., de Zelicourt, A.

Date: 2025-07-09 · Version: 1
DOI: 10.1101/2025.07.08.663752

Category: Plant Biology

Model Organism: Arabidopsis thaliana

AI Summary

The study shows that inoculating Arabidopsis thaliana with the plant‑growth‑promoting bacterium Enterobacter sp. SA187 markedly boosts root and shoot biomass under elevated CO₂, accompanied by altered nitrogen and carbon content and reshaped phytohormone signaling. Transcriptomic and metabolomic analyses reveal activation of salicylic acid, jasmonic acid, and ethylene pathways and enhanced primary metabolism, while the ethylene‑insensitive ein2‑1 mutant demonstrates that the growth benefits are ethylene‑dependent.

Enterobacter sp. SA187 elevated CO2 Arabidopsis thaliana phytohormone signaling transcriptomics

Secretory carrier membrane proteins assist with aquaporin trafficking in Arabidopsis.

Authors: Jiang, Q., Vandorpe, M., fox, a. R., Vermeersch, M., Mylle, E., Cuadrado, A. F., Kraus, J., Liu, H., Eeckhout, D., Navarre, C., Courtoy, A., Jacobs, T. B., Dragwidge, J. M., De Smet, I., Pleskot, R., Chaumont, F., Van Damme, D.

Date: 2025-07-06 · Version: 1
DOI: 10.1101/2025.07.03.662988

Category: Plant Biology

Model Organism: Arabidopsis thaliana

AI Summary

The study investigated the five Arabidopsis SCAMP proteins, focusing on SCAMP5, and identified conserved tyrosine and NPF motifs that mediate anterograde transport and endocytosis, respectively. SCAMPs were shown to dimerize at the plasma membrane and endosomes, interact with plasma‑membrane aquaporins, and their loss (triple and quintuple mutants) conferred mild developmental delay but increased drought tolerance, likely via altered PIP trafficking or stability.

SCAMP proteins Arabidopsis thaliana aquaporins (PIPs) drought tolerance protein trafficking

Zinc deficiency induces spatially distinct responses in roots and impacts ZIP12-dependent zinc homeostasis in Arabidopsis

Authors: Thiebaut, N., Persson, D. P., Sarthou, M., Stevenne, P., Bosman, B., Carnol, M., Fanara, S., Verbruggen, N., Hanikenne, M.

Date: 2025-06-30 · Version: 1
DOI: 10.1101/2025.06.26.661794

Category: Plant Biology

Model Organism: Arabidopsis thaliana

AI Summary

The study combined cell biology, transcriptomics, and ionomics to reveal that zinc deficiency reduces root apical meristem size while preserving meristematic activity and local Zn levels, leading to enhanced cell elongation and differentiation in Arabidopsis thaliana. ZIP12 was identified as a highly induced gene in the zinc‑deficient root tip, and zip12 mutants displayed impaired root growth, altered RAM structure, disrupted Zn‑responsive gene expression, and abnormal metal partitioning, highlighting ZIP12’s role in maintaining Zn homeostasis and meristem function.

zinc deficiency root apical meristem ZIP12 transcriptomics ionomics

Multi-Omics Analysis of Heat Stress-Induced Memory in Arabidopsis

Authors: Thirumlaikumar, V. P. P., Yu, L., Arora, D., Mubeen, U., Wisniewski, A., Walther, D., Giavalisco, P., Alseekh, S., DL Nelson, A., Skirycz, A., Balazadeh, S.

Date: 2025-06-23 · Version: 1
DOI: 10.1101/2025.06.19.660594

Category: Plant Biology

Model Organism: Arabidopsis thaliana

AI Summary

The study uses a high‑throughput comparative multi‑omics strategy to profile transcript, metabolite, and protein dynamics in Arabidopsis thaliana seedlings throughout the heat‑stress memory (HSM) phase following acquired thermotolerance. Early recovery stages show rapid transcriptional activation of memory‑related genes, while protein levels stay elevated longer, and distinct metabolite patterns emerge, highlighting temporal layers of the memory process.

heat stress acquired thermotolerance heat stress memory multi-omics Arabidopsis thaliana

Non-Thermal Plasma Activated Water is an Effective Nitrogen Fertilizer Alternative for Arabidopsis thaliana

Authors: Kizer, J. J., Robinson, C. D., Lucas, T., Shannon, S., Hernandez, R., Stapelmann, K., Rojas-Pierce, M.

Date: 2025-06-17 · Version: 1
DOI: 10.1101/2025.06.12.659237

Category: Plant Biology

Model Organism: Arabidopsis thaliana

AI Summary

The study compared two plasma‑activated water (PAW) solutions with different H₂O₂ levels, produced by a radio‑frequency glow discharge, on Arabidopsis thaliana growth and stress responses. PAW lacking detectable H₂O₂ promoted seedling growth and induced nitrogen‑assimilation genes, while H₂O₂‑containing PAW did not affect growth but enhanced root performance under heat stress; mature plants fertilized with H₂O₂‑free PAW performed comparably to nitrate controls. These results indicate PAW can replace NO₃⁻ fertilizers provided H₂O₂ levels are carefully managed.

plasma activated water hydrogen peroxide reactive oxygen species nitrogen uptake heat stress

m6A RNA methylation attenuates thermotolerance in Arabidopsis

Authors: Shekhawat, K., Sheikh, A., Nawaz, K., Fatima, A., Alzayed, W., Nagaranjan, A. P., Hirt, H.

Date: 2025-05-23 · Version: 1
DOI: 10.1101/2025.05.22.655480

Category: Plant Biology

Model Organism: Arabidopsis thaliana

AI Summary

The study demonstrates that N6‑methyladenosine (m6A) RNA methylation acts as a negative regulator of thermotolerance in Arabidopsis thaliana, with loss of m6A increasing heat‑responsive gene expression and mRNA stability. Heat shock triggers a transient reduction of m6A levels, which is linked to enrichment of the H3K4me3 histone mark at target loci, enhancing transcription of heat shock proteins. These findings reveal a coordinated interplay between RNA methylation and chromatin modifications that fine‑tunes the plant heat stress response.

heat stress m6A RNA methylation thermotolerance Arabidopsis thaliana H3K4me3 histone modification
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