检索结果-南通市图书馆

Comprehensive Transcriptome Analysis of Auxin Responses in Arabidopsis

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2008年第2期1卷 321-337页

作者： Ivan A. Paponov Martina Paponovt William Teale Margit Menges Sohini Chakrabortee James A.H. Murray klaus palme Faculty of Biology University of Freiburg Schanzlestrasse 1 79104 Freiburg Germany Institute of Biotechnology University of Cambridge Cambridge CB2 1QT United Kingdom

In plants, the hormone auxin shapes gene expression to regulate growth and development. Despite the detailed characterization of auxin-inducible genes, a comprehensive overview of the temporal and spatial dynamics of auxinregulated gene expression is lacking. Here, we analyze transcriptome data from many publicly available Arabidopsis profiling experiments and assess tissue-specific gene expression both in response to auxin concentration and exposure time and in relation to other plant growth regulators. Our analysis shows that the primary response to auxin over a wide range of auxin application conditions and in specific tissues comprises almost exclusively the up-regulation of genes and iden- tifies the most robust auxin marker genes. Tissue-specific auxin responses correlate with differential expression of Aux/ IAA genes and the subsequent regulation of context- and sequence-specific patterns of gene expression. Changes in transcript levels were consistent with a distinct sequence of conjugation, increased transport capacity and down-regulation of biosynthesis in the temperance of high cellular auxin concentrations. Our data show that auxin regulates genes associated with the biosynthesis, catabolism and signaling pathways of other phytohormones. We present a transcriptional overview of the auxin response. Specific interactions between auxin and other phytohormones are highlighted, particularly the regulation of their metabolism. Our analysis provides a roadmap for auxin-dependent processes that underpins the concept of an ＇auxin code＇-a tissue-specific fingerprint of gene expression that initiates specific developmental processes.

关键词： Comprehensive Transcriptome Analysis Auxin Responses Arabidopsis

Towards Systems Analysis of Auxin Action

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Towards Systems Analysis of Auxin Action

AtNSF regulates leaf serration by modulating intracellular trafficking of PIN1 in Arabidopsis thaliana

2009整合植物生物学研讨会

作者： klaus palme FRIAS-Freiburg Institute of Advances Studies Centre for Systems BiologyCentre for Biological Signalling StudiesCentre for Applied BiosciencesInstitute of BiologyFaculty of BiologyUniversity of Freiburg

Hormones have been at the centre of plant physiology research for more than a century. Research into plant hormones has at times been considered as a rather vague subject,but the systematic application of genetic and molecular techniques has led to key insights that have revitalized the *** focus on the plant hormone auxin and its action,highlight

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2021年第4期63卷 737-754页

作者： Li Ping Tang Yi Yang Hui Wang Lixin Li Le Liu Yu Liu Jinfeng Yuan Xiang Yu Zhao klaus palme Ying Hua Su Xugang Li State Key Laboratory of Crop Biology College of Life SciencesShandong Agricultural UniversityTai'an 271018China Sino-German Joint Research Center on Agricultural Biology College of Life SciencesShandong Agricultural UniversityTai'an 271018China Institute of Biology II/Molecular Plant Physiology Faculty of BiologyAlbert-Ludwigs-University of FreiburgSchänzlestrasse 1Freiburg D-79104Germany Key Laboratory of Saline-alkali Vegetation Ecology Restoration Ministry of EducationAlkali Soil Natural Environmental Science CenterNortheast Forestry UniversityHarbin 150040China BIOSS Centre for Biological Signalling Studies Albert-Ludwigs-University FreiburgSignalhausSchänzlestr.18Freiburg D-79104Germany Center for Biological Systems Analysis(ZBSA) Albert-Ludwigs-University FreiburgFreiburg D-79104Germany

In eukaryotes,N-ethylmaleimide-sensitive factor(NSF)is a conserved AAA+ATPase and a key component of the membrane trafficking machinery that promotes the fusion of secretory vesicles with target ***,we demonstrate that the Arabidopsis thaliana genome contains a single copy of NSF,At NSF,which plays an essential role in the regulation of leaf *** At NSF knock-down mutant,atnsf-1,exhibited more serrations in the leaf ***,polar localization of the PINFORMED1(PIN1)auxin efflux transporter was diffuse around the margins of atnsf-1 leaves and root growth was inhibited in the atnsf-1 *** PIN1-GFP accumulated in the intracellular compartments of atnsf-1 plants,suggesting that At NSF is required for intracellular trafficking of PIN between the endosome and plasma ***,the serration phenotype was suppressed in the atnsf-1 pin1-8 double mutant,suggesting that At NSF is required for PIN1-mediated polar auxin transport to regulate leaf *** CUPSHAPED COTYLEDON2(CUC2)transcription factor gene is up-regulated in atnsf-1 plants and the cuc2-3 single mutant exhibits smooth leaf margins,demonstrating that At NSF also functions in the CUC2 *** results reveal that At NSF regulates the PIN1-generated auxin maxima with a CUC2-mediated feedback loop to control leaf serration.

关键词： At NSF Auxin CUC2 leaf serration PIN1 vesicle trafficking

CDC48B facilitates the intercellular trafficking of SHORT-ROOT during radial patterning in roots

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2022年第4期64卷 843-858页

作者： Lihui Yang Mingyue Zhu Yi Yang Ke Wang Yulei Che Shurui Yang Jinxiang Wang Xin Yu Lixin Li Shuang Wu klaus palme Xugang Li Yong Wang State Key Laboratory of Crop Biology College of Life SciencesShandong Agricultural UniversityDaizong Street 61Tai'an271018 China Institute of Biology II/Molecular Plant Physiology Faculty of BiologyAlbert-Ludwigs-University of FreiburgSchänzlestrasse 1FreiburgD-79104 Germany Department of Genetics Northwest Women's and Children's HospitalXi'an710061 China Shandong Engineering Research Center of Plant-Microbia Restoration for Saline-alkali Land Shandong Agricultural UniversityDaizong Street 61Tai'an271018 China Sino German Joint Research Center for Agricultural Biology College of Life SciencesShandong Agricultural UniversityDaizong Street 61Tai'an271018 China State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources&College of Natural Resources and Environment South China Agricultural UniversityGuangzhou510640 China Citrus Research Institute Southwest UniversityChongqing400712 China Key Laboratory of Saline-alkali Vegetation Ecology Restoration Ministry of EducationCollege of Life SciencesNortheast Forestry UniversityHarbin150040 China FAFU-UCR Joint Center and Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology College of Life SciencesFujian Agriculture and Forestry UniversityFuzhou350002 China 不详

CELL DIVISION CONTROL PROTEIN48(CDC48)is essential for membrane fusion,protein degradation,and other cellular ***,we revealed the crucial role of CDC48B in regulating periclinal cell division in roots by analyzing the recessive gen1 *** identified the GEN1 gene through map-based cloning and verified that GEN1 encodes ***1 showed severely inhibited root growth,increased periclinal cell division in the endodermis,defective middle cortex(MC)formation,and altered ground tissue patterning in *** with these phenotypes,CYCLIND 6;1(CYCD6;1),a periclinal cell division marker,was upregulated in gen1 compared to *** ratio of SHR_(pro):SHR-GFP fluorescence in pre-dividing nuclei versus the adjacent stele decreased by 33%in gen1,indicating that the trafficking of SHORT-ROOT(SHR)decreased in gen1 when endodermal cells started to *** findings suggest that the loss of function of CDC48B inhibits the intercellular trafficking of SHR from the stele to the endodermis,thereby decreasing SHR accumulation in the *** findings shed light on the crucial role of CDC48B in regulating periclinal cell division in roots.

关键词： Arabidopsis CDC48B cell division control periclinal cell division SHR

The unconventional prefoldin RPB5 interactor mediates the gravitropic response by modulating cytoskeleton organization and auxin transport in Arabidopsis

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2022年第10期64卷 1916-1934页

作者： Yi Yang Fang Liu Le Liu Mingyue Zhu Jinfeng Yuan Yan‐Xia Mai Jun‐Jie Zou Jie Le Yonghong Wang klaus palme Xugang Li Yong Wang Long Wang State Key Laboratory of Crop Biology College of Life SciencesShandong Agricultural UniversityDaizong Street 61Tai'an 271018China Shandong Provincial Key Laboratory of Biophysics Institute of BiophysicsDezhou UniversityDezhou 253023China Sino‐German Joint Research Center on Agricultural Biology College of Life SciencesShandong Agricultural UniversityDaizong Street 61Tai'an 271018China Faculty of Biology Institute of Biology II/Molecular Plant PhysiologyAlbert‐Ludwigs‐University of FreiburgSchänzlestrasse 1Freiburg D‐79104Germany National Key Laboratory of Plant Molecular Genetics(NKLPMG) CAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and Ecology(SIPPE)Chinese Academy of Sciences(CAS)Shanghai 200032China Biotechnology Research Institute Chinese Academy of Agricultural SciencesBeijing 100081China Key Laboratory of Plant Molecular Physiology CAS Center for Excellence in Molecular Plant SciencesInstitute of BotanyChinese Academy of SciencesBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China

Gravity-induced root curvature involves the asymmetric distribution of the phytohormone *** response depends on the concerted activities of the auxin transporters such as PIN-FORMED(PIN)proteins for auxin efflux and AUXIN RESISTANT 1(AUX1)for auxin ***,how the auxin gradient is established remains *** we identified a new mutant with a short root,strong auxin distribution in the lateral root cap and an impaired gravitropic *** causal gene encoded an Arabidopsis homolog of the human unconventional prefoldin RPB5 interactor(URI).At URI interacted with prefoldin 2(PFD2)and PFD6,twoβ-type PFD members that modulate actin and tubulin patterning in *** auxin reporter DR5_(rev):GFP showed that asymmetric auxin redistribution after gravistimulation is disordered in aturi-1 root *** with the endomembrane protein trafficking inhibitor brefeldin A indicated that recycling of the auxin transporter PIN2 is disrupted in aturi-1 roots as well as in pfd *** propose that At URI cooperates with PFDs to recycle PIN2and modulate auxin distribution.

关键词： Arabidopsis auxin cytoskeleton PIN2 prefoldin(PFD) unconventional prefoldin RPB5 interactor(URI)

Complex relationships between physiological stress and endoparasite infections in natural populations

在线全文

学校读者我要写书评

暂无评论

Current Zoology 2020年第5期66卷 449-457页

作者： Claudia Romeo Lucas A.WAUTERS Francesca Santicchia Ben DANTZER Rupert palme Adriano Martinoli Nicola Ferrari Department of Veterinary Medicine Universita degli Stu di di MilanoVia Celoria 10Milano2133Italy bDepartment of Theoretical and Applied Sciences Environment Analysis and Management Unit-Guido Tosi Research Group-Universita degli Studi delKInsubriaVia J.H.Dunant 3Varese21100Italy Department of Biology Evolutionary Ecology GroupUniversity of AntwerpUniversiteitsplein 1Wilrijk2610Belgium Department of Psychology University of Michigan530 Church StreetAnn ArborMl48109USA Department of Ecology and Evolutionary Biology University of Michigan830 North UniversityAnn ArborMl48109USA Unit of Physiology Pathophysiology and Experimental En docri no logyDepartment of Biomedical Scie ncesUniversity of Veterinary Medicine ViennaVeterinarplatz 1Vienna1210Austria Centro di Ricerca Coordinata Epidemiologia e Sorveglianza Molecolare delle Infezioni Universita degli Studi di MilanoMilanoItaly

Short-term elevation of glucocorticoids(GCs)is one of the major physiological mechanisms by which vertebrates cope with challenging environmental or social factors(stressors).However,when exposure to stressors occurs repeatedly or over a prolonged period of time,animals may experience chronic elevation of GCs,which reduces the immune response efficiency and can lead to higher intensity of parasitic ***,we used invasive gray squirrels Sciurus carolinensis in troduced in Norther n Italy and their 2 most prevale nt gastrointesti nal parasites,the n ematode Strongyloides robustus and coccidia of the genus Eimeria,as a model to investigate relati on ships among macroparasite infection and concentrations of fecal glucocorticoid metabolites(FGMs),an integrated measure of circulating *** results revealed an association of FGMs with infection by ***,but not with *** with higher FGMs appear to be responsible for the greatest *** egg shedding within gray squirrel populations,thus possibly acting as ***,FGMs were negatively associated with adult ***,suggesting that the abundance of adults of this nematode species does not induce elevation in FGMs,but is only affected by it through immun e-mediated effects on its fecun *** ally,the relati on ship betwee n ***(both eggs and adult parasites)and FGMs was not linear,suggesting that only high levels of physiological stress in fluence parasite inf *** fin dings highlight that the direction and magnitude of the stress-infection relationship may depend not only on the specific hostparasite system,but also on the different life stages of the same parasite.

关键词： fecal glucocorticoid metabolites invasive alien species parasites Sciurus carolinensis stress tree squirrel

Auxin as a Model for the Integration of Hormonal Signal Processing and Transduction

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2008年第2期1卷 229-237页

作者： W.D. Teale F.A. Ditengou A.D. Dovzhenko X. Li A.M. Molendijk B. Ruperti I. Paponov K. palme Institute of Biology Ⅱ Faculty of Biology University of Freiburg D-79104 Freiburg Germanya Dipartimento di Agronomia Ambientale e Produzioni Vegetali Agripolis University of Padova viale dell'Universita 16 35020 Legnaro Italy

The regulation of plant growth responds to many stimuli. These responses allow environmental adaptation, thereby increasing fitness. In many cases, the relay of information about a plant＇s environment is through plant hormones. These messengers integrate environmental information into developmental pathways to determine plant shape. This re- view will use, as an example, auxin in the root ofArabidopsis thaliana to illustrate the complex nature of hormonal signal processing and transduction. It will then make the case that the application of a systems-biology approach is necessary, if the relationship between a plant＇s environment and its growth/developmental responses is to be properly understood.

关键词： Auxin as a Model Integration Processing and Transduction

Relationships between personality traits and the physiological stress response in a wild mammal

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2020年第2期66卷 197-204页

作者： Francesca SANTICCHIA Lucas A.WAUTERS Ben DANTZER Sarah E.WESTRICK Nicola FERRARI Claudia ROMEO Rupert palme Damiano G.PREATONI Adriano MARTINOLI Department of Theoretical and Applied Sciences Environment Analysis and Management Unit-Guido Tosi Research Group-Universita degli Studi dell'nsubriaVia J.H.Dunant 321100 VareseItly Department of Biology Evolutionary Ecology GroupUniversity of AntwerpUniversiteitsplein 12610 WilrijkBelgium Department of Psychology University of Michigan530 Church StreetAnn ArborMI 48109USA Department of Ecology and Evolutionary Biology University of Michigan830 North UniversityAnn ArborMI 48109USA Department of Veterinary Medicine Universita degli Studi di MilanoVia Celoria 1020133 MilanoItaly Centro di Ricerca Coordinata Epidemiologia e Sorveglianza Molecolare delle Infezioni Universita degli Studi di MilanoMilanoItly Unit of Physiology Pathophysiology and Experimental EndocrinologyDepartment of Biomedical SciencesUniversity of Veterinary Medicine ViennaVeterinarplatz 11210 ViennaAustria

Glucocorticoids(GCs)are involved in the regulation of an animal's energetic *** stressful situations,they are part of the neuroendocrine response to cope with environmental *** react to aversive stimuli also through behavioral responses,defined as coping *** in captive and wild populations,individuals differ in their behavior along a proactive-reactive *** animals exhibit a bold,active explorative and social personality,whereas reactive ones areshy,less active-explorative and less ***,we test the hypothesis that personality traits and physiological responses to stressors covary,with more proactive individuals having a less pronounced GC stress *** wild populations of invasive gray squirrels Sciurus carolinensis,we measuredfecal glucocorticoid metabolites(FGMs),an integrated measure of circulating GCs,and 3 personality traits(activity,sociability,and exploration)derived from open field test(OFT)and mirror image stimulation(MIS)*** squirrels had higher FGMs in Autumn than in Winter and males with scrotal testes had higher FGMs than nonbreeding *** varied with body mass and population *** expressed more activity exploration at higher than at lower density and heavier squirrels had higher scores for activity exploration than animals that weighed *** in FGM concentrations was not correlated with the expression of the 3 personality ***,our results do not support a strong association between the behavioral and physiological stress responses but show that in wild populations,where animals experience varying environmental conditions,the GC endocrine response and the expression of personality are uncorrelated traits among individuals.

关键词： FGM concentration glucocorticoids HPA axis reactivity MCMCglmm personality-traits Sciurus carolinensis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

复杂网络中的强连接研究

复杂网络中的强连接研究

作者： Mawagali, palme 哈尔滨工业大学

学位级别：硕士

随着各种复杂网络的出现,其中包括在线社交网络(例如Facebook)、信息网络(例如万维网)等,越来越多的学者开始研究复杂网络中的强连接。研究者通过分析、观察和探索网络的拓扑结构来找出网络中不同类型的数据以及研究它们的特性。基于他... 详细信息

随着各种复杂网络的出现,其中包括在线社交网络(例如Facebook)、信息网络(例如万维网)等,越来越多的学者开始研究复杂网络中的强连接。研究者通过分析、观察和探索网络的拓扑结构来找出网络中不同类型的数据以及研究它们的特性。基于他们的研究许多创新的解决方案、好的方法用来解决生物学、因特网、社交、疾病传播领域等网络中的挑战性问题。强连接在复杂网络中扮演重要作用,强连接的变化会对复杂网络的几何和统计特性产生重要影响。本文主要研究强连接对复杂网络的影响,通过改变真实网络中连接的强度研究网络特性的变化,然后模拟网络变化后的结果。本文共五章:第一章绪论,第二章是复杂网络中的强连接,第三章是强连接对复杂网络的影响,第四章为强连接在复杂网络聚类中的影响,第五章为强连接在复杂网络路径中的影响。本文第一章和第二章是绪论以及介绍复杂网络中强连接的基本知识。绪论介绍背景和本研究的可行性。特别包括以下几部分:研究背景,研究目的和意义,研究目标(广义上及狭义上)。第一章为后面的几章打下理论基础。第二章对研究中用到的基本术语进行定义,然后是复杂网络和强连接的详细定义。第三章、第四章和第五章介绍实验工作并展示获得的结果,主要分析强连接在复杂网络聚类、中心度量、路径分析等属性上的影响,最后给出建议和讨论。为了进一步分析强连接在复杂网络中的影响,本文使用了在第三、四、五章中的研究案例。

关键词：强链接复杂网络无标度网络度分布