Current Biology最新文献_第10页

IF 8.1 1区生物学

Current Biology Pub Date : 2024-10-21 DOI: 10.1016/j.cub.2024.07.006

Félix P Hartmann, Mélanie Decourteix, Bruno Moulia

{"title":"Curvature in plants.","authors":"Félix P Hartmann, Mélanie Decourteix, Bruno Moulia","doi":"10.1016/j.cub.2024.07.006","DOIUrl":"10.1016/j.cub.2024.07.006","url":null,"abstract":"Curvatures are ubiquitous in the animal kingdom - the spiral shell of the nautilus and the corkscrew horns of the blackbuck being iconic examples. Dynamic changes in curvature (i.e., curving) are most striking in the locomotion of some animal species - swimming in fishes and mollusks, looping in leeches, undulatory locomotion in snakes and lampreys, and also sperm motility through flagellum beating. When it comes to plants, which are sessile organisms with a rigid body, the terms 'curvature' and 'curving' evoke very different images - leaves of grass swaying in the breeze, a trunk dangerously bent by a powerful gust of wind, a branch sagging under the weight of its own fruits, as well as the frail arabesques of twining plants like the morning glory and the ivy, which were so influential in the Art Nouveau movement and many other artistic traditions. These various vegetal curves not only prompt creative inspiration in the mind of the beholder, they also initiate signaling cascades leading to developmental responses of the plant. Conversely, curvature can result from a biologically active process in response to an internal or external stimulus. Active curving or decurving are indeed important aspects of the plastic interplay of the developmental program of plants and their environment. Although easily accessible to observation, curvature and curving have only recently become the focus of active research in plant development. Lying at the nexus of biology, physics and mathematics, they require an interdisciplinary approach. The aim of this primer is to give readers an intuitive but accurate understanding of what curvature and curving are, as observed in the plant kingdom, then a more formal definition. We will discuss their role in plant development, both as a signal and as a response, and finally the practical issues and solutions involved in measuring plant curvatures.","PeriodicalId":11359,"journal":{"name":"Current Biology","volume":null,"pages":null},"PeriodicalIF":8.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142497049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Records from Neotropical non-breeding grounds reveal shifts in bird migration phenology over six decades. 来自新热带非繁殖地的记录揭示了六十年来鸟类迁徙物候的变化。

IF 8.1 1区生物学

Current Biology Pub Date : 2024-10-21 Epub Date: 2024-09-26 DOI: 10.1016/j.cub.2024.08.061

Daniel A Gutiérrez-Carrillo, Bryam Mateus-Aguilar, Camila Gómez, Carlos Daniel Cadena

{"title":"Records from Neotropical non-breeding grounds reveal shifts in bird migration phenology over six decades.","authors":"Daniel A Gutiérrez-Carrillo, Bryam Mateus-Aguilar, Camila Gómez, Carlos Daniel Cadena","doi":"10.1016/j.cub.2024.08.061","DOIUrl":"10.1016/j.cub.2024.08.061","url":null,"abstract":"Changes in the migration phenology of birds linked to global change are extensively documented. Longitudinal studies from temperate breeding grounds have mostly shown earlier arrivals in the spring and a variety of patterns during fall migration,1,2 yet no studies have addressed whether and how migration phenology has changed using data from the tropical non-breeding grounds. Understanding whether changes in migratory phenology are also evident in non-breeding sites is essential to determining the underlying causes of patterns documented in breeding areas. Using data from historical scientific collections and modern repositories of community science records, we assessed changes in the migration phenology of 12 Nearctic-Neotropical long-distance migratory birds in Colombia over six decades. We also explored whether shared breeding and non-breeding climatic niches explained variation in the phenological patterns observed among species. All species showed shifts in spring (range -37 to 9 days from peak passage date) or fall (range -26 to 36 days) migration, but patterns differed among species in ways partly attributable to shared breeding or wintering climatic niches. Our results, although not yet broadly generalizable, suggest that birds use cues to time their migration at their non-breeding grounds, which are most likely different to those they use on their breeding grounds. To better understand the effects of global change on biodiversity, exploring the underlying drivers of phenological changes with further research integrating more long-term datasets available through scientific collections and community science platforms should be a priority.","PeriodicalId":11359,"journal":{"name":"Current Biology","volume":null,"pages":null},"PeriodicalIF":8.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142343645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Three-dimensional molecular atlas highlights spatial and neurochemical complexity in the axial nerve cord of octopus arms. 三维分子图谱凸显章鱼臂轴神经索的空间和神经化学复杂性。

IF 8.1 1区生物学

Current Biology Pub Date : 2024-10-21 Epub Date: 2024-09-25 DOI: 10.1016/j.cub.2024.08.049

Gabrielle C Winters-Bostwick, Sarah E Giancola-Detmering, Caleb J Bostwick, Robyn J Crook

{"title":"Three-dimensional molecular atlas highlights spatial and neurochemical complexity in the axial nerve cord of octopus arms.","authors":"Gabrielle C Winters-Bostwick, Sarah E Giancola-Detmering, Caleb J Bostwick, Robyn J Crook","doi":"10.1016/j.cub.2024.08.049","DOIUrl":"10.1016/j.cub.2024.08.049","url":null,"abstract":"Octopus arms, notable for their complex anatomy and remarkable flexibility, have sparked significant interest within the neuroscience community. However, there remains a dearth of knowledge about the neurochemical organization of various cell types in the arm's nervous system. To address this gap, we used hybridization chain reaction (HCR) to identify distinct neuronal types in the axial nerve cords of the pygmy octopus, Octopus bocki, including putative dopaminergic, octopaminergic, serotonergic, GABAergic, glutamatergic, cholinergic, and peptidergic cells. We obtained high-resolution multiplexed fluorescent images at 0.28 × 0.28 × 1.0 μm voxel size from 10 arm base and arm tip cross sections (each 50 μm thick) and created three-dimensional reconstructions of the axial ganglia, illustrating the spatial distribution of multiple neuronal populations. Our analysis unveiled anatomically distinct and molecularly diverse scattered neurons, while also highlighting multiple populations of dense small neurons that appear uniformly distributed throughout the cortical layer and potential glial cells in the neuropil. Our data provide new insights into how different types of neurons may contribute to an octopus's ability to interact with its environment and execute complex tasks. In addition, our findings establish a benchmark for future studies, allowing pioneering exploration of octopus arm molecular neuroanatomy and offering exciting new avenues in invertebrate neuroscience research.","PeriodicalId":11359,"journal":{"name":"Current Biology","volume":null,"pages":null},"PeriodicalIF":8.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142343672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Top-down attention shifts behavioral and neural event boundaries in narratives with overlapping event scripts. 在有重叠事件脚本的叙述中，自上而下的注意力会改变行为和神经的事件边界。

IF 8.1 1区生物学

Current Biology Pub Date : 2024-10-21 Epub Date: 2024-10-03 DOI: 10.1016/j.cub.2024.09.013

Alexandra De Soares, Tony Kim, Franck Mugisho, Elen Zhu, Allison Lin, Chen Zheng, Christopher Baldassano

{"title":"Top-down attention shifts behavioral and neural event boundaries in narratives with overlapping event scripts.","authors":"Alexandra De Soares, Tony Kim, Franck Mugisho, Elen Zhu, Allison Lin, Chen Zheng, Christopher Baldassano","doi":"10.1016/j.cub.2024.09.013","DOIUrl":"10.1016/j.cub.2024.09.013","url":null,"abstract":"Understanding and remembering the complex experiences of everyday life relies critically on prior schematic knowledge about how events in our world unfold over time. How does the brain construct event representations from a library of schematic scripts, and how does activating a specific script impact the way that events are segmented in time? We developed a novel set of 16 audio narratives, each of which combines one of four location-relevant event scripts (restaurant, airport, grocery store, and lecture hall) with one of four socially relevant event scripts (breakup, proposal, business deal, and meet cute), and presented them to participants in an fMRI study and a separate online study. Responses in the angular gyrus, parahippocampal gyrus, and subregions of the medial prefrontal cortex (mPFC) were driven by scripts related to both location and social information, showing that these regions can track schematic sequences from multiple domains. For some stories, participants were primed to attend to one of the two scripts by training them to listen for and remember specific script-relevant episodic details. Activating a location-related event script shifted the timing of subjective event boundaries to align with script-relevant changes in the narratives, and this behavioral shift was mirrored in the timing of neural responses, with mPFC event boundaries (identified using a hidden Markov model) aligning to location-relevant rather than socially relevant boundaries when participants were location primed. Our findings demonstrate that neural event dynamics are actively modulated by top-down goals and provide new insight into how narrative event representations are constructed through the activation of temporally structured prior knowledge.","PeriodicalId":11359,"journal":{"name":"Current Biology","volume":null,"pages":null},"PeriodicalIF":8.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142375253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Actomyosin clusters as active units shaping living matter. 肌动蛋白集群是塑造生命物质的活性单元。

IF 8.1 1区生物学

Current Biology Pub Date : 2024-10-21 DOI: 10.1016/j.cub.2024.08.043

Karsten Kruse, Rémi Berthoz, Luca Barberi, Anne-Cécile Reymann, Daniel Riveline

引用次数: 0

Physics, ecological acoustics and the auditory system. 物理学、生态声学和听觉系统。

IF 8.1 1区生物学

Current Biology Pub Date : 2024-10-21 DOI: 10.1016/j.cub.2024.05.056

Josh H McDermott, Vinayak Agarwal, James Traer

引用次数: 0

The CEP peptide-CRA2 receptor module promotes arbuscular mycorrhizal symbiosis. CEP肽-CRA2受体模块促进丛枝菌根共生。

IF 8.1 1区生物学

Current Biology Pub Date : 2024-10-18 DOI: 10.1016/j.cub.2024.09.058

Léa Pedinotti, Juliette Teyssendier de la Serve, Thibault Roudaire, Hélène San Clemente, Marielle Aguilar, Wouter Kohlen, Florian Frugier, Nicolas Frei Dit Frey

{"title":"The CEP peptide-CRA2 receptor module promotes arbuscular mycorrhizal symbiosis.","authors":"Léa Pedinotti, Juliette Teyssendier de la Serve, Thibault Roudaire, Hélène San Clemente, Marielle Aguilar, Wouter Kohlen, Florian Frugier, Nicolas Frei Dit Frey","doi":"10.1016/j.cub.2024.09.058","DOIUrl":"https://doi.org/10.1016/j.cub.2024.09.058","url":null,"abstract":"C-terminally encoded peptides (CEPs) are small secreted signaling peptides that promote nitrogen-fixing root nodulation symbiosis in legumes, depending on soil mineral nitrogen availability.1 In Medicago truncatula, their action is mediated by the leucine-rich repeat receptor-like protein kinase COMPACT ROOT ARCHITECTURE 2 (CRA2).2,3,4 Like most land plants, under inorganic phosphate limitation, M. truncatula establishes another root endosymbiotic interaction with arbuscular fungi, the arbuscular mycorrhizal symbiosis (AMS). Because this interaction is beneficial for the plant but has a high energetic cost, it is tightly controlled by host plants to limit fungal infections mainly depending on phosphate availability.5 We show in this study that the expression of a subset of CEP-encoding genes is enhanced in the low-phosphate conditions and that overexpression of the low-phosphate-induced MtCEP1 gene, previously shown to promote the nitrogen-fixing root nodulation symbiosis, enhances AMS from the initial entry point of the fungi. Conversely, a loss-of-function mutation of the CRA2 receptor required for mediating CEP peptide action2 decreases the endomycorrhizal interaction from the same initial fungal entry stage. Transcriptomic analyses revealed that the cra2 mutant is negatively affected in the regulation of key phosphate transport and response genes as well as in the biosynthesis of strigolactone hormones that are required for establishing AMS. Accordingly, strigolactone contents were drastically decreased in cra2 mutant roots. Overall, we showed that the CEP/CRA2 pathway promotes both root nodulation and AMS in legume plants, depending on soil mineral nutrient availability.","PeriodicalId":11359,"journal":{"name":"Current Biology","volume":null,"pages":null},"PeriodicalIF":8.1,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142497040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Control of sporophyte secondary cell wall development in Marchantia by a Class II KNOX gene. 通过 II 类 KNOX 基因控制马钱子属孢子体次生细胞壁的发育。

IF 8.1 1区生物学

Current Biology Pub Date : 2024-10-17 DOI: 10.1016/j.cub.2024.09.061

Tom Dierschke, Jonathan Levins, Edwin R Lampugnani, Berit Ebert, Sabine Zachgo, John L Bowman

{"title":"Control of sporophyte secondary cell wall development in Marchantia by a Class II KNOX gene.","authors":"Tom Dierschke, Jonathan Levins, Edwin R Lampugnani, Berit Ebert, Sabine Zachgo, John L Bowman","doi":"10.1016/j.cub.2024.09.061","DOIUrl":"https://doi.org/10.1016/j.cub.2024.09.061","url":null,"abstract":"Land plants evolved from an ancestral alga around 470 mya, evolving complex multicellularity in both haploid gametophyte and diploid sporophyte generations. The evolution of water-conducting tissues in the sporophyte generation was crucial for the success of land plants, paving the way for the colonization of a variety of terrestrial habitats. Class II KNOX (KNOX2) genes are major regulators of secondary cell wall formation and seed mucilage (pectin) deposition in flowering plants. Here, we show that, in the liverwort Marchantia polymorpha, loss-of-function alleles of the KNOX2 ortholog, MpKNOX2, or its dimerization partner, MpBELL1, have defects in capsule wall secondary cell wall and spore pectin biosynthesis. Both genes are expressed in the gametophytic calyptra surrounding the sporophyte and exert maternal effects, suggesting intergenerational regulation from the maternal gametophyte to the sporophytic embryo. These findings also suggest the presence of a secondary wall genetic program in the non-vascular liverwort capsule wall, with attributes of secondary walls in vascular tissues.","PeriodicalId":11359,"journal":{"name":"Current Biology","volume":null,"pages":null},"PeriodicalIF":8.1,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142497030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Changes in DNA repair compartments and cohesin loss promote DNA damage accumulation in aged oocytes. DNA 修复区的变化和凝聚素的缺失会促进衰老卵母细胞中 DNA 损伤的积累。

IF 8.1 1区生物学

Current Biology Pub Date : 2024-10-17 DOI: 10.1016/j.cub.2024.09.040

Ninadini Sharma, Giovanni Coticchio, Andrea Borini, Kikuë Tachibana, Kim A Nasmyth, Melina Schuh

{"title":"Changes in DNA repair compartments and cohesin loss promote DNA damage accumulation in aged oocytes.","authors":"Ninadini Sharma, Giovanni Coticchio, Andrea Borini, Kikuë Tachibana, Kim A Nasmyth, Melina Schuh","doi":"10.1016/j.cub.2024.09.040","DOIUrl":"https://doi.org/10.1016/j.cub.2024.09.040","url":null,"abstract":"Oocyte loss, a natural process that accelerates as women approach their mid-30s, poses a significant challenge to female reproduction. Recent studies have identified DNA damage as a primary contributor to oocyte loss, but the mechanisms underlying DNA damage accumulation remain unclear. Here, we show that aged oocytes have a lower DNA repair capacity and reduced mobility of DNA damage sites compared to young oocytes. Incomplete DNA repair in aged oocytes results in defective chromosome integrity and partitioning, thereby compromising oocyte quality. We found that DNA repair proteins are arranged in spatially distinct DNA repair compartments that form during the late stages of oocyte growth, accompanied by changes in the activity of DNA repair pathways. We demonstrate alterations in these compartments with age, including substantial changes in the levels of key DNA repair proteins and a shift toward error-prone DNA repair pathways. In addition, we show that reduced cohesin levels make aged oocytes more vulnerable to persistent DNA damage and cause changes in DNA repair compartments. Our study links DNA damage accumulation in aged oocytes, a leading cause of oocyte loss, to cohesin deterioration and changes in the organization, abundance, and response of DNA repair machinery.","PeriodicalId":11359,"journal":{"name":"Current Biology","volume":null,"pages":null},"PeriodicalIF":8.1,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142497029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Historical invasion rates vary among insect trophic groups. 不同昆虫营养群的历史入侵率各不相同。

IF 8.1 1区生物学

Current Biology Pub Date : 2024-10-17 DOI: 10.1016/j.cub.2024.09.068

Richard Mally, Rebecca M Turner, Helen F Nahrung, Takehiko Yamanaka, Gyda Fenn-Moltu, Cleo Bertelsmeier, Andrew M Liebhold

{"title":"Historical invasion rates vary among insect trophic groups.","authors":"Richard Mally, Rebecca M Turner, Helen F Nahrung, Takehiko Yamanaka, Gyda Fenn-Moltu, Cleo Bertelsmeier, Andrew M Liebhold","doi":"10.1016/j.cub.2024.09.068","DOIUrl":"https://doi.org/10.1016/j.cub.2024.09.068","url":null,"abstract":"Globalization has spread thousands of invasive insect species into new world regions,1,2,3 causing severe losses in ecosystem services. Previous work proposed that plant invasions facilitate insect invasions through the creation of niches for non-native herbivores.3,4,5,6 Despite the impact of insect invasions, a comprehensive understanding is lacking on how invasion success varies among insect feeding groups. We therefore compiled the predominant larval trophic groups (herbivores, predators, parasites, detritivores, and brood-carers) for 5,839 non-native insect species in nine world regions to compare (1) proportions of species in each group between non-native species and the world's fauna, (2) how invasion success for each trophic group has changed over the last three centuries, and (3) how historical herbivore invasions are related to plant invasions over time and parasite invasions are related to herbivores. We find that herbivores represent a significantly larger proportion (52.4%) among non-native insects compared with the world fauna (38.4%), whereas proportions of non-native detritivores (including fungivores), predators, and brood-carers are significantly lower; parasite proportions do not significantly differ. Predators and detritivores dominated among invasions in the 18th century but subsequently diminished, likely due to changing invasion pathways, whereas proportions of herbivores, parasites, and brood-carers increased over time. We found herbivore invasions to lag 80 years behind plant invasions, whereas parasitoids appear to co-invade with their herbivore hosts. The dominance of herbivores among non-native insects and their strong cross-correlation with plant invasions further strengthens the hypothesis that plant invasions drive the global rise in numbers of non-native insects.","PeriodicalId":11359,"journal":{"name":"Current Biology","volume":null,"pages":null},"PeriodicalIF":8.1,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142497035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0