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Article
Plant Sciences
Cynthia Medwed et al.
Summary: The study provides a detailed overview of the ecophysiological, biochemical, and ultrastructural traits of a green alga living on tree bark. The alga, identified as Diplosphaera chodatii, showed low light requirements and high desiccation tolerance, with recovery of 85% of its initial value after controlled desiccation at a relative humidity of around 10%. The alga contained protective compounds sucrose and sorbitol against desiccation and a newly detected mycosporine-like amino acid with potential protective effects.
Article
Plant Sciences
Bernd Zechmann et al.
Summary: TMV and ZYMV infections in tobacco and pumpkin plants respectively lead to significant ultrastructural changes, including accumulation of virus inclusion bodies, alterations in mitochondria, peroxisomes, and chloroplasts, as well as changes in starch and plastoglobules volumes in chloroplasts. The comprehensive data collected in this study provide insights into the 3D changes induced by these viruses in plants.
Article
Plant Sciences
Maryam Alsadat Zekri et al.
Summary: This study investigated the ultrastructure of Limnospira fusiformis and the impact of cyanophage infections using CLSM and TEM techniques. The induction of lysogenic cyanophages led to significant changes in thylakoid arrangements and increased viral counts. Our findings highlight the potential of CLSM in studying viral-mediated modifications in cyanobacteria.
Article
Plant Sciences
Milada Ciamporova et al.
Summary: The pseudometallophyte Rumex acetosella L. inhabits regions with high soil concentrations of zinc, lead, and copper. Comparisons between populations from contaminated and non-contaminated soils in Slovakia showed that metallicolous populations have higher metal contents, stomata and trichome density, as well as complex labyrinth structures within the cell wall. These findings suggest plant adaptations to metal stress for survival in contaminated environments.
Article
Plant Sciences
David S. Domozych et al.
Summary: Penium margaritaceum is a unicellular zygnematophyte used as a model organism to study Streptophyte cell walls and adaptations in the evolution of land plants. Incubated in hyperosmotic medium, Penium quickly forms Hechtian strands connecting the plasma membrane to the cell wall, leading to significant changes in wall and membrane domains as cells acclimate to osmotic stress. This acclimatization involves reduction of homogalacturonan lattice, formation of a filamentous phenotype, and proliferation of vacuolar networks, offering insight into the transition of ancient zygnematophytes from aquatic to terrestrial existence.
Article
Plant Sciences
Eva Hejdukova et al.
Summary: The freezing tolerance of 12 freshwater strains of benthic pennate diatoms isolated from polar habitats was assessed, revealing that only a minority of strains were able to tolerate freezing in some treatments. The results indicated a high sensitivity of these diatoms to freezing stress, while emphasizing the importance of nutrient-depleted resting cells for survival in harsh polar conditions.
Article
Plant Sciences
Charlotte Permann et al.
Summary: Investigation on the conjugation morphology of Mougeotia spp. using various microscopy techniques revealed differences in cell wall structure between species. The zygospore walls are mainly composed of polysaccharides and lipids, with the presence of proteins, aromatic components, and other organic compounds.
Review
Plant Sciences
Anzhou Xin et al.
Summary: This review emphasizes the importance of understanding the regulation of lignin, suberin and cutin precursor biosynthesis in plants by highlighting knowledge gaps and recent findings on transcription factors. The lack of understanding in regulating the biosynthesis of suberin and cutin impedes efforts to engineer their formation in plants and produce customized biopolymers. The discussion of how to close the remaining knowledge gaps provides insights for future research in this area.
Article
Plant Sciences
Martin Felhofer et al.
Summary: The study used Raman imaging to observe the algae Micrasterias cells, finding differences in cell wall thickness, orientation of cellulose microfibrils, and chemical composition. The results suggest that the chemical differences in the cell wall contribute to different wall properties, affecting cell shape changes.
Article
Plant Sciences
Lawrence J. Winship et al.
Summary: The shape of the apical region of lily pollen tube changes rhythmically as the growth rate oscillates, with curvature changes indicating differential changes in local wall expansion rates. The shoulder regions lag behind during part of the oscillation cycle, catching up as the growth rate at the tip reaches a maximum and begins to decline. Cell shape and growth rate oscillate in concert and are functionally related.
Article
Plant Sciences
Philip Steiner et al.
Summary: The study showed that despite not freezing during winter, the Micrasterias cells in peat bog pools suffered frost damage when ice encasement occurred, as they were unable to frost harden. Significant ultrastructural changes were observed in response to artificial cold acclimation and field sampling, indicating cytological adjustments in the cells.
Article
Plant Sciences
Irene Lichtscheidl et al.
Summary: The mechanism and dynamics of nutrient absorption and transport in Drosera glands were studied using fluorescent albumin and live cell imaging. The formation of fluorescent endosomes in the glands was observed, which accumulated around the nucleus and transferred to other cell types in the tentacle stalk. The ultrastructure of these dynamic processes, including the prominent ER contacts with other organelles, was also assessed using high-pressure frozen and freeze substituted cells.
Review
Plant Sciences
Azeddine Driouich et al.
Summary: Root cap-derived cells and mucilage form a root extracellular trap (RET) similar to the neutrophil extracellular trap (NET) in mammals, containing defensive molecules and attracting specific microbes to the rhizosphere through arabinogalactan proteins.
Article
Plant Sciences
Andreas Holzinger et al.
Summary: By investigating the ultrastructure and carbohydrate composition of the red alga Tsunamia transpacifica, insights into its adaptation to growing on plastic surfaces have been revealed. Overall, Tsunamia adapts to the uncommon habitat through a thick cell wall, multilobed chloroplast, and specific structures with adhering capacities.
Biographical-Item
Plant Sciences
Andreas Holzinger
