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| http://dx.doi.org/10.1105/tpc.20.00871 | DOI Listing |
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A Genome-Wide Association Screen for Genes Affecting Leaf Trichome Development and Epidermal Metal Accumulation in Arabidopsis.
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January 2025
Department of Experimental Plant Biology, Faculty of Sciences, Charles University, Prague, Czechia.
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.
View Article and Find Full Text PDFEmbryonal tumor with multilayered rosettes, DICER1-mutated, showing histologically unique neuronal differentiation after chemoradiotherapy.
Neuropathology
January 2025
Department of Human Pathology, Gunma University Graduate School of Medicine, Maebashi, Japan.
Embryonal tumors with multilayered rosettes (ETMRs) are rare and highly aggressive embryonal central nervous system tumors that predominantly affect infants younger than 3 years old. These tumors typically have a C19MC alteration (ETMR, C19MC-altered) or, more rarely, a DICER1 mutation (ETMR, DICER1-mutated). Post-chemotherapeutic or post-chemoradiotherapeutic histological changes of C19MC-altered ETMRs, such as maturation or loss of histological characteristics of ETMR have been described in several reports.
View Article and Find Full Text PDFIdentification of novel PfEMP1 variants containing domain cassettes 11, 15 and 8 that mediate the Plasmodium falciparum virulence-associated rosetting phenotype.
PLoS Pathog
January 2025
Institute of Immunology and Infection Research, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom.
Plasmodium falciparum erythrocyte membrane protein 1 (PfEMP1) is a diverse family of variant surface antigens, encoded by var genes, that mediates binding of infected erythrocytes to human cells and plays a key role in parasite immune evasion and malaria pathology. The increased availability of parasite genome sequence data has revolutionised the study of PfEMP1 diversity across multiple P. falciparum isolates.
View Article and Find Full Text PDFIntraspecific and intra-individual chemodiversity and phenotypic integration of terpenes across plant parts and development stages in an aromatic plant.
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Chemical Ecology, Bielefeld University, Bielefeld, Germany.
Some plant species produce an extraordinary diversity of specialized metabolites. The diverse class of terpenes is characteristic for many aromatic plants, and terpenes can occur as both emitted volatiles and stored compounds. Little is known about how intraspecific chemodiversity and phenotypic integration of both emitted volatile and stored terpenes differ intra-individually across plant development and between different plant parts, and studies considering both spatial and temporal scales are scarce.
View Article and Find Full Text PDFAtTRM11 as a tRNA 2-methylguanosine methyltransferase modulates flowering and bacterial resistance via translational regulation.
Plant Sci
December 2024
College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, Hubei Province 430070, China. Electronic address:
2-methylguanosine is an eukaryote-specific modified nucleoside in transfer RNAs, and mG10 is catalyzed by Trm11-Trm112 protein complex in eukaryotic tRNAs. Here, we show that loss-of-function mutation of the Arabidopsis Trm11 homolog AtTRM11 resulted in mG deficiency associated with disturbed ribosome assembly and overall transcriptome changes, including genes involved in flowering regulation and plant-pathogen interaction. The attrm11 mutant showed phenotypes of enlarged rosette leaves and early flowering, as well as enhanced resistance to Pseudomonas bacterial infection.
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