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Total 84794 results found since Jan 2013.
Mid-holocene Brown Bear (Ursus arctos) from the Bolshoy Lyakhovsky Island (New Siberian Islands)
Dokl Biol Sci. 2023 Sep 12. doi: 10.1134/S0012496623700692. Online ahead of print.ABSTRACTA morphological description is provided for a unique find of a frozen mummified subfossil brown bear (Ursus arctos L., 1758), found for the first time ever. The find is a well-preserved bear carcass of approximately 3500 years in age. Results of computed tomography and DNA testing are discussed.PMID:37700103 | DOI:10.1134/S0012496623700692
Source: Doklady Biological Sciences - September 12, 2023 Category: Biology Authors: M Yu Cheprasov G G Boeskorov G P Novgorodov A N Tikhonov L V Grigorieva E S Boulygina N V Slobodova F S Sharko A V Protopopov A V Nedoluzhko Source Type: research
Mustela strandi (Mustelidae, Carnivora) from the Early Pleistocene of Crimea
Dokl Biol Sci. 2023 Sep 12. doi: 10.1134/S0012496623700680. Online ahead of print.ABSTRACTAbstract-The dentary of Mustela strandi Kormos, 1934 is described from the Lower Pleistocene deposits (Late Villafranchian, 1.8-1.5 Ma) of the Taurida cave in Crimea. It is the first finding of M. strandi in Russia. This extinct mustelid species is rarely found in the Lower and Middle Pleistocene of Central Europe.PMID:37700102 | DOI:10.1134/S0012496623700680
Source: Doklady Biological Sciences - September 12, 2023 Category: Biology Authors: D O Gimranov Q Jiangzuo A V Lavrov A V Lopatin Source Type: research
A spatially concerted epidermal auxin signaling framework steers the root hair foraging response under low nitrogen
Curr Biol. 2023 Sep 6:S0960-9822(23)01119-3. doi: 10.1016/j.cub.2023.08.040. Online ahead of print.ABSTRACTAs a major determinant of the nutrient-acquiring root surface, root hairs (RHs) provide a low-input strategy to enhance nutrient uptake. Although primary and lateral roots exhibit elongation responses under mild nitrogen (N) deficiency, the foraging response of RHs and underlying regulatory mechanisms remain elusive. Employing transcriptomics and functional studies revealed a framework of molecular components composing a cascade of auxin synthesis, transport, and signaling that triggers RH elongation for N acquisition...
Source: Current Biology - September 12, 2023 Category: Biology Authors: Zhongtao Jia Ricardo F H Giehl Anja Hartmann Jose M Estevez Malcolm J Bennett Nicolaus von Wir én Source Type: research
Extending the reach of homology by using successive computational filters to find yeast pheromone genes
Curr Biol. 2023 Sep 6:S0960-9822(23)01118-1. doi: 10.1016/j.cub.2023.08.039. Online ahead of print.ABSTRACTThe mating of fungi depends on pheromones that mediate communication between two mating types. Most species use short peptides as pheromones, which are either unmodified (e.g., α-factor in Saccharomyces cerevisiae) or C-terminally farnesylated (e.g., a-factor in S. cerevisiae). Peptide pheromones have been found by genetics or biochemistry in a small number of fungi, but their short sequences and modest conservation make it impossible to detect homologous sequences in most species. To overcome this problem, we used a...
Source: Current Biology - September 12, 2023 Category: Biology Authors: Sriram Srikant Rachelle Gaudet Andrew W Murray Source Type: research
Defining eukaryotes to dissect eukaryogenesis
Curr Biol. 2023 Sep 11;33(17):R919-R929. doi: 10.1016/j.cub.2023.07.048.ABSTRACTThe origin of eukaryotes is among the most contentious debates in evolutionary biology, attracting multiple seemingly incompatible theories seeking to explain the sequence in which eukaryotic characteristics were acquired. Much of the controversy arises from differing views on the defining characteristics of eukaryotes. We argue that eukaryotes should be defined phylogenetically, and that doing so clarifies where competing hypotheses of eukaryogenesis agree and how we may test among aspects of disagreement. Some hypotheses make predictions abou...
Source: Current Biology - September 12, 2023 Category: Biology Authors: Philip C J Donoghue Chris Kay Anja Spang Gergely Sz öllősi Anna Nenarokova Edmund R R Moody Davide Pisani Tom A Williams Source Type: research
Rodent attention: Probing the mouse mind with reverse correlation
Curr Biol. 2023 Sep 11;33(17):R916-R918. doi: 10.1016/j.cub.2023.07.015.ABSTRACTA novel approach to studying attention in mice reveals processes similar to those in humans and lays out an efficient way to explore its neuronal correlates in a genetically tractable animal model.PMID:37699352 | DOI:10.1016/j.cub.2023.07.015
Source: Current Biology - September 12, 2023 Category: Biology Authors: Supriya Ghosh John H R Maunsell Source Type: research
Plant biology: Young maize leaves 'smell' a volatile danger signal
Curr Biol. 2023 Sep 11;33(17):R914-R916. doi: 10.1016/j.cub.2023.07.034.ABSTRACTInsect-attacked maize releases volatile compounds named green leaf volatiles. A new study shows that young maize leaves respond to a green leaf volatile compound with emission of indole and terpenes, while these responses are almost completely absent in mature leaves.PMID:37699351 | DOI:10.1016/j.cub.2023.07.034
Source: Current Biology - September 12, 2023 Category: Biology Authors: Jianqiang Wu Source Type: research
Plant development: How to kill the endosperm
Curr Biol. 2023 Sep 11;33(17):R912-R913. doi: 10.1016/j.cub.2023.07.033.ABSTRACTUsing molecular markers and genetic analysis of mutant phenotypes, a new study reveals that endosperm elimination in plant seeds is under control of the programmed cell death pathway.PMID:37699350 | DOI:10.1016/j.cub.2023.07.033
Source: Current Biology - September 12, 2023 Category: Biology Authors: Claudia K öhler Nicolas Butel Source Type: research
Inhibitory neurons: VIP neurons expect rewards
Curr Biol. 2023 Sep 11;33(17):R909-R911. doi: 10.1016/j.cub.2023.07.059.ABSTRACTInhibitory neurons which express vasoactive intestinal polypeptide, VIPs, are a small subset of the mammalian cortex but in importance live up to their acronym. New research shows that these critical control knobs of cortical activity are specifically activated by actions taken when rewards are anticipated rather than consummated.PMID:37699349 | DOI:10.1016/j.cub.2023.07.059
Source: Current Biology - September 12, 2023 Category: Biology Authors: Jing Zou Samuel Andrew Hires Source Type: research
Disease ecology: When a GPS logger tells you more than a blood sample
Curr Biol. 2023 Sep 11;33(17):R907-R909. doi: 10.1016/j.cub.2023.08.018.ABSTRACTLong-term movement tracking revealed sublethal effects of avian influenza infection in vultures, adding an important element to our understanding of the subtleties of the feedback loop between host movement and pathogen transmission.PMID:37699348 | DOI:10.1016/j.cub.2023.08.018
Source: Current Biology - September 12, 2023 Category: Biology Authors: Amandine Gamble Source Type: research
Reproductive biology: A genetic recipe for parthenogenesis
Curr Biol. 2023 Sep 11;33(17):R904-R906. doi: 10.1016/j.cub.2023.07.055.ABSTRACTNew work reveals differences in oogenic gene expression between parthenogenetic and sexually reproducing Drosophila mercatorum strains. Recapitulating those changes in D. melanogaster oocytes induced parthenogenesis in this normally sexually reproducing species, providing molecular insight into how these reproductive modes arise.PMID:37699347 | DOI:10.1016/j.cub.2023.07.055
Source: Current Biology - September 12, 2023 Category: Biology Authors: Jonathon M Thomalla Mariana F Wolfner Source Type: research
Efficient CRISPR/Cas9-mediated genome editing in sheepgrass (Leymus chinensis)
This study opens avenues for studying gene function and breeding in sheepgrass. This article is protected by copyright. All rights reserved.PMID:37698072 | DOI:10.1111/jipb.13567
Source: Journal of Integrative Plant Biology - September 12, 2023 Category: Biology Authors: Zhelong Lin Lei Chen Shanjie Tang Mengjie Zhao Tong Li Jia You Changqing You Boshu Li Qinghua Zhao Dongmei Zhang Jianli Wang Zhongbao Shen Xianwei Song Shuaibin Zhang Xiaofeng Cao Source Type: research
Defence against the intergenerational cost of reproduction in males: oxidative shielding of the germline
Biol Rev Camb Philos Soc. 2023 Sep 12. doi: 10.1111/brv.13012. Online ahead of print.ABSTRACTReproduction is expected to carry an oxidative cost, yet in many species breeders appear to sustain lower levels of oxidative damage compared to non-breeders. This paradox may be explained by considering the intergenerational costs of reproduction. Specifically, a reduction in oxidative damage upon transitioning to a reproductive state may represent a pre-emptive shielding strategy to protect the next generation from intergenerational oxidative damage (IOD) - known as the oxidative shielding hypothesis. Males may be particularly li...
Source: Biological Reviews of the Cambridge Philosophical Society - September 12, 2023 Category: Biology Authors: Graham Birch Magali Meniri Michael A Cant Jonathan D Blount Source Type: research
The fossil record of freshwater Gastropoda - a global review
Biol Rev Camb Philos Soc. 2023 Sep 12. doi: 10.1111/brv.13016. Online ahead of print.ABSTRACTGastropoda are an exceptionally successful group with a rich and diverse fossil record. They have conquered land and freshwater habitats multiple times independently and have dispersed across the entire globe. Since they are important constituents of fossil assemblages, they are often used for palaeoecological reconstruction, biostratigraphic correlations, and as model groups to study morphological and taxonomic evolution. While marine faunas and their evolution have been a common subject of study, the freshwater component of the f...
Source: Biological Reviews of the Cambridge Philosophical Society - September 12, 2023 Category: Biology Authors: Thomas A Neubauer Source Type: research
A broad-taxa approach as an important concept in ecotoxicological studies and pollution monitoring
Biol Rev Camb Philos Soc. 2023 Sep 12. doi: 10.1111/brv.13015. Online ahead of print.ABSTRACTAquatic invertebrates play a pivotal role in (eco)toxicological assessments because they offer ethical, cost-effective and repeatable testing options. Additionally, their significance in the food chain and their ability to represent diverse aquatic ecosystems make them valuable subjects for (eco)toxicological studies. To ensure consistency and comparability across studies, international (eco)toxicology guidelines have been used to establish standardised methods and protocols for data collection, analysis and interpretation. However...
Source: Biological Reviews of the Cambridge Philosophical Society - September 12, 2023 Category: Biology Authors: Amalia Rosner Loriano Ballarin St éphanie Barnay-Verdier Ilya Borisenko Laura Drago Damjana Drobne Maria Concetta Eliso Zoya Harbuzov Annalisa Grimaldi Tamar Guy-Haim Arzu Karahan Iseult Lynch Maria Giulia Lionetto Pedro Martinez Kahina Mehennaoui Elif O Source Type: research
