A Genome-Wide Association Screen for Genes Affecting Leaf Trichome Development and Epidermal Metal Accumulation in Arabidopsis.

To identify novel genes engaged in plant epidermal development, we characterized the phenotypic variability of rosette leaf epidermis of 310 sequenced Arabidopsis thaliana accessions, focusing on trichome shape and distribution, compositional characteristics of the trichome cell wall, and histologically detectable metal ion distribution. Some of these traits correlated with cLimate parameters of our accession's locations of origin, suggesting environmental selection. A novel metal deposition pattern in stomatal guard cells was observed in some accessions.

A single-nuclei transcriptome census of the Arabidopsis maturing root identifies that MYB67 controls phellem cell maturation.

The periderm provides a protective barrier in many seed plant species. The development of the suberized phellem, which forms the outermost layer of this important tissue, has become a trait of interest for enhancing both plant resilience to stresses and plant-mediated CO sequestration in soils. Despite its importance, very few genes driving phellem development are known.

ANAC044 orchestrates mitochondrial stress signaling to trigger iron-induced stem cell death in root meristems.

While iron (Fe) is essential for life and plays important roles for almost all growth related processes, it can trigger cell death in both animals and plants. However, the underlying mechanisms for Fe-induced cell death in plants remain largely unknown. S-nitrosoglutathione reductase (GSNOR) has previously been reported to regulate nitric oxide homeostasis to prevent Fe-induced cell death within root meristems.

Historical and Contemporary Perspectives: Metaphorical Significance of Tooth Extraction in Lithographs and Postcards in the 19th and 20th Centuries in Their Specific Socio-Historical Context.

In historical illustrations and caricatures, the extraction of a tooth served as a powerful metaphor and threatening gesture that extended far beyond the medical context. This article examines the symbolic significance of this dental procedure and the extracted tooth as an expression of loss, disempowerment, and territorial dispossession. The comparison covers a wide range of visual representations from the French Revolution (1789-1799), the French July Revolution (1830), the Crimean War (1853-1856), the Austro-Prussian War (1866), the Franco-Prussian War (1870/71), to the First (1914-1918) and Second (1939-1945) World Wars and places them in their respective historical contexts.

Dynamics in zebrafish development define transcriptomic specificity after angiogenesis inhibitor exposure.

Testing for developmental toxicity is an integral part of chemical regulations. The applied tests are laborious and costly and require a large number of vertebrate test animals. To reduce animal numbers and associated costs, the zebrafish embryo was proposed as an alternative model.