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Rhizophagus irregularis regulates RiCPSI and RiCARI expression to influence plant drought tolerance.
Plant Physiol
December 2024
State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China.
Arbuscular mycorrhizal fungi (AMF) can transfer inorganic nitrogen (N) from the soil to host plants to cope with drought stress, with arginine synthesis and NH4+ transport being pivotal processes. However, the regulatory mechanism underlying these processes remains unclear. Here, we found that drought stress upregulated expression of genes involved in the N transfer pathway and putrescine and glutathione synthesis in the mycorrhizal structures of Rhizophagus irregularis within alfalfa (Medicago sativa) roots, i.
View Article and Find Full Text PDFPhylogeography of the ambrosia beetle Euwallacea interjectus (Coleoptera: Curculionidae: Scolytinae): an emerging poplar pest and its Fusarium mutualists from poplar plantations in China.
J Econ Entomol
December 2024
Forest Protection, Forestry College, Nanjing Forestry University, Nanjing, China.
Native to Asia, Euwallacea interjectus (Blandford) (Coleoptera: Curculionidae: Scolytinae) is a destructive and invasive pest of live trees, and now it has been found in the United States and Argentina. In recent years, this pest appeared in high densities in poplar monocultures from Eastern China (Jiangsu and Shanghai) and Argentina and caused significant poplar mortality. However, the origin of the pests related to tree damage and the Fusarium mutualists from some poplar zones in China remained unclear.
View Article and Find Full Text PDFEvolutionary history of a cold-adapted limnephilid caddisfly: Effects of climate change and topography on genetic structure.
Mol Phylogenet Evol
February 2024
Division of Mountain and Environmental Science, Interdisciplinary Graduate School of Science and Technology, Shinshu University, Asahi 3-1-1, Matsumoto, Nagano 390-8621, Japan; Department of Biology, Faculty of Science, Shinshu University, Asahi 3-1-1, Matsumoto, Nagano 390-8621, Japan; Institute of Mountain Science, Shinshu University, Asahi 3-1-1, Matsumoto, Nagano 390-8621, Japan. Electronic address:
The distribution of organisms is influenced by complex factors such as the phylogenetic evolutionary histories of species, the physiological and ecological characteristics of organisms, climate, and geographical and geohistorical features. In this study, we focused on a caddisfly, Asynarchus sachalinensis (Trichoptera: Limnephilidae), which has adapted to cold habitats. From phylogeographic analyses based on the mitochondrial DNA (mtDNA) cytochrome c oxidase subunit I (COI) and 16S rRNA regions and the nuclear DNA (nDNA) 18S rRNA, 28S rRNA, carbamoyl-phosphate synthetase (CAD), elongation factor-1 alpha (EF1-α), and RNA polymerase II (POLII) regions, two distinct genetic clades were detected.
View Article and Find Full Text PDFAllosteric regulation of CAD modulates de novo pyrimidine synthesis during the cell cycle.
Nat Metab
February 2023
Department of Pathology, New York University Grossman School of Medicine, New York, NY, USA.
Metabolism is a fundamental cellular process that is coordinated with cell cycle progression. Despite this association, a mechanistic understanding of cell cycle phase-dependent metabolic pathway regulation remains elusive. Here we report the mechanism by which human de novo pyrimidine biosynthesis is allosterically regulated during the cell cycle.
View Article and Find Full Text PDFStability of Nuclear and Mitochondrial Reference Genes in Selected Tissues of the Ambrosia Beetle .
Insects
December 2021
Horticultural Insects Research Laboratory, USDA-Agricultural Research Service, 1680 Madison Ave., Wooster, OH 44691, USA.
The fungus-farming ambrosia beetle (Blandford) uses a pouch-like structure (i.e., mycangium) to transport spores of its nutritional fungal mutualist.
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