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To unravel the complex interactions between microplastics (MPs), plants, and pathogens, Arabidopsis thaliana plants were grown for 3 weeks in soils containing polyethylene terephthalate (PET) or polyvinyl chloride (PVC) MPs (0.2% and 0.5% w/w), and leaves were then exposed to the PAMP (Pathogen-Associated Molecular Pattern) protein cerato-platanin (CP) or Botrytis cinerea conidia. PET caused a stimulation of stomatal conductance, and PVC decreased the aboveground biomass of A. thaliana plants. PVC (0.2%) triggered a primed state in A. thaliana, enhancing its response to B. cinerea infection and cerato-platanin. This was demonstrated by decreased lesion size, enhanced ROS generation, and elevated camalexin synthesis following PAMP elicitation, and increased levels of defensive isothiocyanate and phenylpropanoid metabolites. Our results indicate that MPs also affect soil structure, ionome balance, and specialised metabolite accumulation. However, MPs did not provide an unambiguous response, underscoring challenges in formulating a model of plant response to MPs when exposed to pathogens.
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http://dx.doi.org/10.1111/ppl.70312 | DOI Listing |
J Appl Genet
September 2025
Faculty of Natural Sciences, Institute of Biology, Biotechnology and Environmental Protection, University of Silesia in Katowice, 40-032, Katowice, Poland.
Mechanical wounding triggers rapid transcriptional and hormonal reprogramming in plants, primarily driven by jasmonate (JA) signalling. While the role of JA, ethylene, and salicylic acid in wound responses is well characterised, the contribution of strigolactones (SLs) remains largely unexplored. Here, for the first time, it was shown that SLs modulate wound-induced transcriptional dynamics in Arabidopsis thaliana.
View Article and Find Full Text PDFNew Phytol
September 2025
Institute of Plant Biochemistry and Cluster of Excellences on Plant Science (CEPLAS), Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Düsseldorf, 40225, Germany.
In mammals, blood sugar levels are tightly controlled by two hormones: insulin and glucagon. In flowering plants, a comparable regulatory mechanism exists, mediated by the sugar-signalling molecule trehalose 6-phosphate (Tre6P). Similar to insulin, Tre6P functions as a signal and negative feedback regulator of sucrose, the main transport sugar in vascular plants.
View Article and Find Full Text PDFPlant Sci
September 2025
Institute of Chinese Medicinal Materials, College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, PR China. Electronic address:
Although floral morphology in ornamental chrysanthemums has been widely investigated, its genetic basis in medicinal varieties such as Chrysanthemum morifolium cv. 'Hangju' remains largely unexplored, despite its direct relevance to both capitulum development and medicinal quality. To address this gap, we performed transcriptome profiling of ray and disc florets from wild-type and mutant plants, which led to the identification of two MYB-related transcription factor genes, CmDIV-like and CmRAD1, as differentially expressed and potentially associated with altered floral symmetry.
View Article and Find Full Text PDFPLoS One
September 2025
Department of Biology, The University of Saskatchewan, College of Arts and Science, Saskatoon, Canada.
Plasmodesmata are specialized structures in plant cell walls that mediate intercellular communication by regulating the trafficking of molecules between adjacent cells. The actin cytoskeleton plays a pivotal role in controlling plasmodesmatal permeability, but the molecular mechanisms underlying this regulation remain unclear. Here, we report that BRK1, a component of the WAVE/SCAR complex involved in Arp2/3-mediated actin nucleation, localizes to PD and primary pit fields in A.
View Article and Find Full Text PDFPLoS One
September 2025
Department of Plant and Microbial Biology, North Carolina State University, Raleigh, North Carolina, United States of America.
Nitrogen (N) fixation with non-thermal plasmas has been proposed as a sustainable alternative to meet growing N fertilizer demands for agriculture. This technology generates Plasma Activated Water (PAW) with a range of chemical compositions, including different concentrations of nitrate (NO₃⁻) and hydrogen peroxide (H2O2), among other compounds. Potential use of PAW as an effective crop fertilizer necessitates a robust understanding of the underlying biology of the plant, which is not yet available.
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