检索结果-南通市图书馆

Gut passage of epigeous ectomycorrhizal fungi by two opportunistic mycophagous rodents

Current Zoology 2011年第3期57卷 293-299页

作者： Citlalli CASTILLO-GUEVARAl Josette SIERRA gema GALINDO-FLORES Mariana CUAUTLE Carlos LARA Centro de Investigacion en Ciencias Biologicas Universidad Autonoma de Tlaxcala Km 10.5 Autopista Tlaxcala-San Martin Texmelucan San Felipe Ixtacuixtla Tlaxcala 90120 Mexico Departamento de Quimica y Biologfa Universidad de las Americas-Puebla Ex-hacienda Sta Catarina Martir s/n Cholula Puebla 72810 Mexico Centro Tlaxcala de Biologia de la Conducta Universidad Autdnoma de Tlaxcala-UNAM Carretera Tlaxcala-Puebla Km 1.5 s/n Tlaxcala Tlaxcala 90070 Mexico

Mycophagists can influence fungal diversity within their home ranges by ensuring the continued and effective dispersal of spores from one site to another. However, the passage of spores through the digestive tract of vertebrates can affect the activity and viability of the spores ingested. This phenomenon has been rarely documented in opportunistic mycophagists consuming epigeous fungi. Using laboratory experiments, we investigated the activity and viability of spores of two epigeous ectomycorrhizal fungal species (Laccaria trichodermophoraandSuillus tomentosus) after passage through the digestive tract of two opportunistic mycophagous small rodents, the volcano mousePeromyscus alstoniand the deer mouseP. maniculatus. We found that passage through the gut of either species of rodent had a significant effect on spore activity and viability for both fungal species. The proportion of active spores (0.37–0.40) ofL. trichodermophorain the feces of both species of rodents was less than that recorded for the control (0.82). However, the proportion of active spores (0.64–0.73) ofS. tomentosusin the feces of each species of rodent was higher than in the control (0.40). On the other hand, the viability of spores was lower (0.26–0.30 inL. trichodermophoraand 0.60–0.69 inS. tomentosus) for both fungi when consumed by either rodent relative to the controls (0.90 inL. trichodermophoraand 0.82 inS. tomentosus). These findings suggest that these rodent species may be effective dispersers of both epigeous fungi.

关键词：外生菌根真菌啮齿类动物主义肠道动物物种实验室实验活动范围脊椎动物

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Does wetland watershed land use influence amphibian larval development? A relevant effect of agriculture on biota

引用

Journal of Oceanology and Limnology 2019年第1期37卷 160-168页

作者： GARCíA-MU?OZ Enrique GUERRERO francisco ARECHAGA Garbi?e PARRA gema Departamento de Biología Animal Biología Vegetal y Ecología Campus de las Lagunillas Centro de Estudios Avanzados en Ciencias de la Tierra Campus de las Lagunillas Departamento de Ciencias de la Salud Campus de las Lagunillas

Agriculture practices have been widely proposed as the major cause of amphibian population decline. However, the majority of these results have been based on laboratory experiments. The present study was conducted to test the repercussion of wetland sediment provenance on amphibian larval *** bufo larvae were used in two dif ferent treatments in an outdoor experiment, the ?rst one using sediment from one wetland surrounded by intensive agricultural practices, and the second using sediment with no record of agrochemical uses. A negative ef fect was observed in the agricultural treatment, from subcellular to individual level. The results showed that the sediment from agricultural practices watershed generates a reduction in survival. Furthermore, individuals that developed under this treatment showed a lower total length and a delay in the time necessary to complete metamorphosis; these features are connected with recruitment success. In the same way, biochemical analysis showed high values of lipid peroxidation in metamorphs developing in sediments from an agricultural area. Finally, the results obtained highlight the importance of considering the sediments, not only the water, as origin treatment, allowing us to understand the consequences on amphibian populations that inhabit areas af fected by intensive agriculture.

关键词： amphibian decline Bufo bufo survival ecotoxicology agricultural practices

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

In-depth analysis of soil management and farmers’perceptions of related risks in two olive grove areas in southern Spain

引用

International Soil and Water Conservation Research 2021年第3期9卷 461-473页

作者： José A.Gòmez Ana Sanchez Montero gema Guzman Marfa-Auxiliadora Soriano a Institute for Sustainable Agriculture CSICCordobaSpain Agronomy Department University of CordobaCordobaSpain

This manuscript presents a questionnaire-based study aimed to provide a detailed analysis on the different soil management carried out by olive farmers in two representative olive-growing areas in southern Spain(Cordoba and Estepa),their perceptions on cover crop use and the possible influence of the different types of farms and farmers’typologies on these *** results show a relatively large variability of soil management,with fourteen options,as a result of a combination of different alternatives for bare soil and cover crops with the use or not of pruning residues,but with a great similarity between both *** results indicate a high adoption of soil conservation measures in the two study areas,with 63%of farmers using cover crops and 80%a mulch of pruning residues,higher than that reported in previous studies in Southern Spain,and a trend of lower use of these techniques by less experienced and younger *** high penetration of soil conservation measures resulted in a significant reduction of soil erosion risk,as indicated by the relatively low values for the cover and management factor(C)of RUSLE,also calculated and presented in this study,but also the possibility of focusing further efforts on fanners with less *** results indicate the persistence of a minor,but relevant,percentage of farmers using bare soil management(37%)and no mulching(20%),with a moderate concern on the impact of soil erosion on soil degradation and provision of ecosystem *** suggests the need to concentrate efforts also on this cluster of farmers to enhance the success of what seems to be a remarkable expansion of the use of soil conservation measures in recent decades in Southern Spain,but also in similar areas in the Mediterranean basin.

关键词： Tillage Cover crops Olive yield Erosion risk Irrigation Questionnaire

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Review of biosensing with whispering-gallery mode lasers

引用

Light(Science & Applications) 2021年第3期10卷 352-370页

作者： Nikita Toropov gema Cabello Mariana P.Serrano Rithvik R.Gutha Matias Rafti frank Vollmer Departm ent of Physics and Astronomy Living Systems InstituteUniversity of ExeterExeter EX44QDUK Departamento de Qulmica Instituto de Investigaciones Fisicoqufmicas Teoricas y AplicadasUniversidad Nacional de La PlataLa Plata 1900Argentina

Lasers are the pillars of modern optics and *** based on whispering-gallery modes(WGMs)are miniature in size and have excellent lasing characteristics suitable for *** lasers have been used for labelfree detection of single virus particles,detection of molecular electrostatic changes at biointerfaces,and barcode-type live-cell tagging and *** most recent advances in biosensing with WGM microlasers are described in this *** cover the basic concepts of WGM resonators,the integration of gain media into various active WGM sensors and devices,and the cutting-edge advances in photonic devices for micro-and nanoprobing of biological samples that can be integrated with WGM lasers.

关键词： lasers Lasers mode

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Optopharmacological control of TRPC channels by coumarin-caged lipids is associated with a phototoxic membrane effect

引用

Science China(Life Sciences) 2016年第8期59卷 802-810页

作者： Oleksandra Tiapko Bernadett Bacsa gema Guedes de la Cruz Toma Glasnov Klaus Groschner Institute of Biophysics Medical University of GrazBio Tech Med-GrazHarrachgasse 21Graz 8010Austria Institute of Chemistry University of GrazNAWI GrazBio Tech Med-GrazHeinrichstrasse 28Graz 8010Austria

Photouncaging of second messengers has been successfully employed to gain mechanistic insight of cellular signaling pathways. One of the most enigmatic processes of ion channel regulation is lipid recognition and lipid-gating of TRPC channels, which represents pivotal mechanisms of cellular Ca^(2+) homeostasis. Recently, optopharmacological tools including caged lipid mediators became available, enabling an unprecedented level of temporal and spatial control of the activating lipid species within a cellular environment. Here we tested a commonly used caged ligand approach for suitability to investigate TRPC signaling at the level of membrane conductance and cellular Ca^(2+) handling. We report a specific photouncaging artifact that is triggered by the cage structure coumarin at UV illumination. Electrophysiological characterization identified a light-dependent membrane effect of coumarin. UV light(340 nm) as used for photouncaging, initiated a membrane conductance specifically in the presence of coumarin as low as 30 μmol L^(-1) concentrations. This conductance masked the TRPC3 conductance evoked by photouncaging, while TRPC-mediated cellular Ca^(2+) responses were largely preserved. The observed light-induced membrane effects of the released caging moiety may well interfere with certain cellular functions, and prompt caution in using coumarin-caged second messengers in cellular studies.

关键词： caged diacylglycerols TRPC channels Ca2+ signaling optopharmacology

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Profound neutralization evasion and augmented host cell entry are hallmarks of the fast-spreading SARS-CoV-2 lineage XBB.1.5

引用

Cellular & Molecular Immunology 2023年第4期20卷 419-422页

作者： Markus Hoffmann Prerna Arora Inga Nehlmeier Amy Kempf Anne Cossmann Sebastian R.Schulz gema Morillas Ramos Luis A.Manthey Hans-Martin Jäck Georg M.N.Behrens Stefan Pöhlmann Infection Biology Unit German Primate CenterKellnerweg 437077 GöttingenGermany Faculty of Biology and Psychology Georg-August-University GöttingenWilhelmsplatz 137073 GöttingenGermany Department for Rheumatology and Immunology Hannover Medical SchoolCarl-Neuberg-Straße 130625 HannoverGermany Division of Molecular Immunology Department of Internal Medicine 3Friedrich-Alexander University of Erlangen-NürnbergGlückstraße 691054 ErlangenGermany German Centre for Infection Research(DZIF) partner site Hannover-BraunschweigCarl-Neuberg-Straße 130625 HannoverGermany Centre for Individualized Infection Medicine(CiiM) FeodorLynen-Straße730625 HannoverGermany

Since late 2022, the share of infections caused by the SARS-CoV2 lineage XBB.1.5 has gradually increased in the United States,resulting in XBB.1.5 becoming the dominating SARS-CoV-2lineage in the United States and a similar trend is likely to soontake place also in European countries. However, information onthe virological properties of XBB.1.5 is scarce. Here, weconducted an initial virological assessment of the SARS-CoV-2XBB.1.5 lineage.

关键词： becoming likely lineage

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Identification of SUMO Targets by a Novel Proteomic Approach in Plants

引用

Journal of Integrative Plant Biology 2013年第1期55卷 96-107页

作者： gema López-Torrejón Davide Guerra Rafael Catal Julio Salinas Juan C. del Pozo Centro de Biotecnología y Genómica de Plantas (INIA-UPM) Campus de Montegancedo CRA-Genomics Research Centre (GPG) Centro de Investigaciones Biológicas (CSIC) Campus de la Ciudad Universitaria de Madrid

Post-translational modifications （PTMs） chemically and physically alter the properties of proteins, including their folding, subcellular localization, stability, activity, and consequently their function. In spite of their relevance, studies on PTMs in plants are still limited. Small Ubiquitin-like Modifier （SUMO） modification regulates several biological processes by affecting protein-protein interactions, or changing the subcellular Iocalizations of the target proteins. Here, we describe a novel proteomic approach to identify SUMO targets that combines 2-D liquid chromatography, immunodetection, and mass spectrometry （MS） analyses. We have applied this approach to identify nuclear SUMO targets in response to heat shock. Using a bacterial SUMOylation system, we validated that some of the targets identified here are, in fact, labeled with SUMO1. Interestingly, we found that GIGANTEA （GI）, a photoperiodic-pathway protein, is modified with SUMO in response to heat shock both in vitro and in vivo.

关键词： Mass spectrometry plants post-translational modification proteomics SUMO.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of the Treatment of Carpal Tunnel Syndrome with Surgery and Injections on the Hospital Anxiety and Depression Scale (HADS)

引用

Open Journal of Psychiatry 2023年第1期13卷 15-26页

作者： Domingo Ly-Pen José Luis Andreu gema de Blas Isabel Millán Alberto Sánchez-Olaso Cootehill Medical Centre Cootehill Co. Cavan Ireland Department of Rheumatology University Hospital Puerta de Hierro Majadahonda Madrid Spain Neurophysiology Department University Hospital “Ramón y Cajal” Madrid Spain Biostatistics Department University Hospital Puerta de Hierro Majadahonda Madrid Spain Department of Plastic Surgery University Hospital “Ramón y Cajal” Madrid Spain

Background: The prevalence of carpal tunnel syndrome (CTS) and of anxiety and depression in primary care practice are high. Different studies had shown an increased prevalence of anxiety and depression in CTS patients. Nevertheless, few papers had been published studying the anxiety and depression scales in the treatment of CTS, either with corticosteroid injections (I) or with surgical decompression (S). Objective: To assess whether clinical improvement observed after the treatment of CTS either with I or with S correlates with an improvement in the punctuations of the Hospital Anxiety and Depression scales (HADS), at 3, 6 and 12-month follow-up. Methods: Randomized and open-label clinical trial, comparing I and S. Patients with symptoms suggestive of CTS (nocturnal paraesthesias) of at least 3 months duration and neurophysiological confirmation were included. Patients with clinically apparent motor impairment were excluded. The subjective evaluation of symptoms was carried out using the visual-analogue scale of pain (VAS-p). Clinical reviews were performed 3, 6 and 12 months after treatment. Each patient completed the HADS questionnaire and a VAS-p at 0, 3, 6, and 12 months. Statistical significance was established using the Student’s t test and the Mann-Whitney U test when necessary. A linear regression analysis was used to know the effect of the treatment adjusted for the initial score of both scales. Results: 65 patients were included (30 in group I and 35 in group S). There was no statistical difference between both groups in terms of age, gender distribution, disease duration, VAS-p, neurophysiological testing severity of CTS or the 8 subscales of HADS. Both groups improved significantly in relation to the baseline VAS-p values, in the reviews at 3, 6 and 12 months, with no significant differences between I and S. At 6 months, the reduction in the anxiety scale was around 3 points for both treatments (S = 3.6 and I = 3.2), without reaching significant differe

关键词： Carpal Tunnel Syndrome Anxiety Depression Local Corticosteroid Injections Surgery Hospital Anxiety and Depression Scales (HADS)

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Regulation of the New Arabidopsis Imprinted Gene AtBMI1C Requires the Interplay of Different Epigenetic Mechanisms

引用

Molecular Plant 2012年第1期5卷 260-269页

作者： Fabian Bratzel ChaoYang Alexandra Angelova gema Lopez-Torrejon Marcus Koch Juan Carlos del Pozo Myriam Calonje Centre for Organismal Studies Heidelberg Department of Biodiversity and Plant Systernatics University of Heidelberg Im Neuenheirner Feld 345 69120 Heidelberg Germany Centro de Biotecnologia y Genomica de Plantas （UPM-INIA） Campus de Montegancedo s/n Boadilla del Monte 28660 Madrid Spain

Recently, it has been shown that plants contain homologs to the animal Polycomb repressive complex I （PRC1） components BM11 and RINGIA/B. In Arabidopsis, there are three BMIl-like genes, two of which, AtBMIIA and B, are required during post-embryonic plant growth to repress embryonic traits and allow cell differentiation. However, little is known about the third BMIl-like gene, AtBMIIC. In this work, we show that AtBMIIC is only expressed during endosperm and stamen development. AtBMIIC is an imprinted gene expressed from the maternal allele in the endosperm but bialleli- cally expressed in stamen. We found that the characteristic expression pattern of AtBMIIC is the result of a complex epigenetic regulation that involves CG DNA methylation, RNA-directed non-CG DNA methylation （RdDM）, and PcG activity. Our results show the orchestrated interplay of different epigenetic mechanisms in regulating gene expression throughout development, shedding light on the current hypotheses for the origin and mechanism of imprinting in plant endosperm.

关键词： Epigenetics gene silencing development Polycomb Group proteins.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

无拘无束的美学马德里Radikal Klassisk公寓

引用

室内设计与装修 2023年第10期 86-89页

作者： [西班牙]gema Gutierrez coco(编译) 不详

Radikal Klassisk是西班牙马德里的一间新的公寓,由西班牙工作室Puntophilipino的女设计师gema Gutiérrez设计,具有折中、大胆和令人难以置信的质感。Puntofilipino于2016年在马德里创立,是一家空间设计工作室。工作室探索照明、家具... 详细信息

Radikal Klassisk是西班牙马德里的一间新的公寓,由西班牙工作室Puntophilipino的女设计师gema Gutiérrez设计,具有折中、大胆和令人难以置信的质感。Puntofilipino于2016年在马德里创立,是一家空间设计工作室。工作室探索照明、家具和物品在环境中的关系,并将对整体艺术作品的构想变为现实。现在他们已经拥有一支成熟的团队,其每一个作品都在传达着工作室独特的设计精神,并提供不同的身临其境的体验,创造出留下情感印象的空间。

关键词：设计工作室西班牙马德里公寓艺术作品无拘无束身临其境

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：