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http://dx.doi.org/10.1111/j.1365-2052.2005.01343.x | DOI Listing |
BMC Plant Biol
January 2025
Key Comprehensive Laboratory of Forestry, Northwest A&F University, Yangling, Shaanxi Province, 712100, P. R. China.
Background: Study the leaf functional traits is highly important for understanding the survival strategies and climate adaptability of old trees. In this study, the old (over 100 years old) and mature trees (about 50 years old) of Pinus tabulaeformis in the Loess Plateau were studied, and the variation of 18 leaf functional traits (6 economic, 4 anatomical, 2 photosynthetic and 6 physiological traits) was analyzed to understand the differences of survival strategies between old and mature trees. Combined with transcriptome and simple sequence repeats (SSR) techniques, the effects of soil property factors and genetic factors on leaf functional traits and the potential molecular mechanisms of traits differences were studied.
View Article and Find Full Text PDFMol Oncol
January 2025
Division of Molecular Genome Analysis, German Cancer Research Center, Heidelberg, Germany.
Colorectal cancer (CRC) patients with microsatellite-stable (MSS) tumors are mostly treated with chemotherapy. Clinical benefits of targeted therapies depend on mutational states and tumor location. Many tumors carry mutations in KRAS proto-oncogene, GTPase (KRAS) or B-Raf proto-oncogene, serine/threonine kinase (BRAF), rendering them more resistant to therapies.
View Article and Find Full Text PDFNat Commun
January 2025
Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA.
Studies of the genetics of Alzheimer's disease (AD) have largely focused on single nucleotide variants and short insertions/deletions. However, most of the disease heritability has yet to be uncovered, suggesting that there is substantial genetic risk conferred by other forms of genetic variation. There are over one million short tandem repeats (STRs) in the genome, and their link to AD risk has not been assessed.
View Article and Find Full Text PDFGenet Mol Biol
January 2025
Instituto Nacional de Pesquisas da Amazônia, Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva (PPG GCBEv), Manaus, AM, Brazil.
Centromochlus heckelii has the lowest diploid chromosome number (2n = 46) and the only described heteromorphic sex chromosome system in Auchenipteridae. This study presents a population of C. heckelii from the Central Amazon basin with subtle variations in the karyotype composition and a variant W chromosome with distinct morphology and increased C-positive heterochromatin content.
View Article and Find Full Text PDFEcol Evol
January 2025
Illinois Natural History Survey, Prairie Research Institute University of Illinois Urbana-Champaign Champaign Illinois USA.
Maynard Smith's proposed two-fold cost of sex states that one of the disadvantages of clonal reproduction is the decreased ability to persist in dynamic ecosystems. However, the long-term persistence of some clonal alloploid lineages suggests that these lineages may not always be so ephemeral in nature. Understanding the stability of these lineages over time can inform our understanding of the advantages of an asexual mode of life.
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