检索结果-南通市图书馆

Failure mechanism and supporting measures for large deformation of Tertiary deep soft rock

在线全文

学校读者我要写书评

暂无评论

International Journal of Mining Science and Technology 2015年第1期25卷 121-126页

作者： Guo Zhibiao Wang Jiong zhang yuelin State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and Technology School of Mechanics and Civil Engineering China University of Mining and Technology

The Shenbei mining area in China contains typical soft rock from the Tertiary Period. As mining depths increase, deep soft rock roadways are damaged by large deformations and constantly need to be repaired to meet safety requirements, which is a great security risk. In this study, the characteristics of deformation and failure of typical roadway were analyzed, and the fundamental reason for the roadway deformation was that traditional support methods and materials cannot control the large deformation of deep soft rock. Deep soft rock support technology was developed based on constant resistance energy absorption using constant resistance large deformation bolts. The correlative deformation mechanisms of surrounding rock and bolt were analyzed to understand the principle of constant resistance energy absorption. The new technology works well on-site and provides a new method for the excavation of roadwavs in Tertiary deed soft rock.

关键词： Tertiary deep soft rockFailure mechanism of large deformationConstant resistance and large deformationboltCountermeasures of constant resistancecontrol

Biosynthesis and Regulation of Salicylic Acid and N-Hydroxypipecolic Acid in Plant Immunity

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2020年第1期13卷 31-41页

作者： Weijie Huang Yiran Wang Xin Li yuelin zhang Department of Botany University of British ColumbiaVancouverBC V6T 1Z4Canada Michael Smith Laboratories University of British ColumbiaVancouverBC V6T 1Z4Canada

Salicylic acid(SA)has long been known to be essential for basal defense and systemic acquired resistance(SAR).N-Hydroxypipecolic acid(NHP),a recently discovered plant metabolite,also plays a key role in SAR and to a lesser extent in basal *** pathogen infection,levels of both compounds are dramatically *** of SA-or SAR-deficient mutants has uncovered how SA and NHP are *** completion of the SA and NHP biosynthetic pathways in Arabidopsis allowed better understanding of how they are *** this review,we discuss recent progress on SA and NHP biosynthesis and their regulation in plant immunity.

关键词： plant immunity SAR SA NHP pipecolic acid

Differential requirement of BAK1 C-terminal tail in development and immunity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2018年第4期60卷 270-275页

作者： di wu yanan liu fan xu yuelin zhang department of botany university of british columbiaVancouverBC V6T 1Z4Canada

Summary BRI1-ASSOCIATED RECEPTOR KINASE 1 （BAK1） plays critical roles in plant developmental and immune signaling pathways. BAKI and a large number of leucine-rich repeat receptor-like kinases （LRR-RLKs） harbor a mysterious carboxyl-terminal tail （CT） beyond their kinase domain. In this study we analyzed the biological significance of this CT region using a unique bak~ mutant allele which causes deletion of the CT region. We showed that BAKt CT promotes its kinase activity and is required for pathogen-associated molec- ular pattern （PAMP）-triggered immunity, but it is dispensable for brassinosteroid responses and BAK1/ BKKl-inhibited cell death signaling. Therefore the BAK1 C-terminal tail is differentially required for its functions in development and immunity.

关键词： BAK CT Differential requirement of BAK1 C-terminal tail in development and immunity Figure

Negative regulation of resistance protein-mediated immunity by master transcription factors SARD_1 and CBP60g

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2018年第11期60卷 1023-1027页

作者： tongjun sun wanwan liang yuelin zhang xin li department of botany university of british columbiaVancouverBC V6T 1Z4Canada michael smith laboratories university of british columbiaVancouverBC V6T 1Z4Canada

Summary Salicylic acid （SA） is an essential defence hormone in plants. Upon pathogen infection, induced biosynthesis of SA is mediated by Isochorismate synthase 1 （ICS1）, whose gene transcription is controlled mainly through two redundant transcription factors, SAR Deficient 1 （SARD0 and Calmodulin- binding protein 6o-like g （CBP60g）.

关键词： SNC Negative regulation of resistance protein-mediated immunity by master transcription factors SARD1 and CBP60g SA Figure CBP

Receptor-like kinases MDS1 and MDS2 promote SUMM2-mediated immunity

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2021年第2期63卷 277-282页

作者： Yanan Liu Xionghui Zhong Zhibin zhang Jiameng Lan Xingchuan Huang Hainan Tian Xin Li yuelin zhang Hunan Provincial Key Laboratory of Phytohormones and Growth Development College of Bioscience and BiotechnologyHunan Agricultural UniversityChangsha 410000China Department of Botany University of British Columbia3529-6270 University BlvdVancouverBritish ColumbiaV6T 1Z4Canada Key Laboratory of Molecular Epigenetics of MOE Northeast Normal UniversityChangchun 130000China

Disruption of the MEKK1-MKK1/MKK2-MPK4 kinase cascade leads to activation of immunity mediated by the nucleotide-binding leucine-rich repeat(NLR)immune receptor SUMM2,which monitors the phosphorylation status of *** we report that two receptor-like kinases(RLKs),MDS1,and MDS2,function redundantly to promote SUMM2-mediated *** of SUMM2-mediated immunity is dependent on MDS1,and to a less extent on ***1 associates with CRCK3 in planta and can phosphorylate CRCK3 in vitro,suggesting that it may target CRCK3 to positively regulate SUMM2-mediated *** finding highlights a new defense mechanism where RLKs promote NLR-mediated immunity.

关键词： CRCK3 MAP kinase cascade MDS1 MPK4 plant immunity SUMM2

Arabidopsis CALMODULIN-BINDING PROTEIN 60b plays dual roles in plant immunity

在线全文

学校读者我要写书评

暂无评论

Plant Communications 2021年第6期2卷 1-11页

作者： Weijie Huang Zhongshou Wu Hainan Tian Xin Li yuelin zhang Department of Botany University of British ColumbiaVancouverBC V6T 1Z4Canada Michael Smith Laboratories University of British ColumbiaVancouverBC V6T 1Z4Canada

Arabidopsis SYSTEMIC ACQUIRED RESISTANCE DEFICIENT 1(SARD1)and CALMODULIN-BINDING PROTEIN 60g(CBP60g)are two master transcription factors that regulate many defense-related genes in plant im*** are required for immunity downstream of the receptor-like protein SUPPRESSOR OF NPR1-1,CONSTITUTIVE 2(SNC2).Constitutive defense responses in the gain-of-function autoimmune snc2-1D mutant are modestly affected in either sard1 or cbp60g single mutants but completely suppressed in the sard1 cbp60g double *** we report that CBP60b,another member of the CBP60 family,also functions as a positive regulator of SNC2-mediated ***-of-function mutations of CBP60b suppress the constitutive expression of SARD1 and enhanced disease resistance in cbp60g-1 snc2-1D,whereas overexpression of CBP60b leads to elevated SARD1 expression and constitutive defense *** addition,transient expression of CBP60b in Nicotiana benthamiana activates the expression of the pSARD1::luciferase reporter *** immunoprecipitation assays further showed that CBP60b is recruited to the promoter region of SARD1,suggesting that it directly regulates SARD1 ***,knocking out CBP60b in the wild-type background leads to ENHANCED DISEASE SUSCEPTIBILITY 1(EDS1)-dependent autoimmunity,suggesting that CBP60b is required for the expression of a guardee/decoy or a negative regulator of immunity mediated by receptors carrying an N-terminal Toll-interleukin-1 receptor-like domain.

关键词： Arabidopsis plant immunity CBP60b CBP60g SARD1 salicylic acid

Disaster assessment for the“Belt and Road”region based on SDG landmarks

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Big Earth Data 2022年第1期6卷 3-17页

作者： Li Wang Yuanhuizi He yuelin zhang Lei Wang Huicong Jia Quan Zhou Bo Yu Meimei zhang Zhengyang Lin Fang Chen State Key Laboratory of Remote Sensing Science Aerospace Information Research InstituteChinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences BeijingChina Key Laboratory of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijingChina

In this study,based on the EM-DAT(The Emergency Events Database)database,disaster assessment for the“Belt and Road”region was carried out in relation to the SDG_(13.1.1)indicator of the Sustainable Development Goals(SDGs)agenda launched in 2015.A new method for diagnosing trends in the SDG_(13.1.1)indicators based on the Theil-Sen median method is *** addition,using the data available in the EM-DAT,an overview of disaster records is used to quantify disasters for a total of 73 *** disaster trends for the period 2015‒2019 were found to demon-strate the following.(1)As a result of geological and climate con-ditions,Asia and Africa are high-risk disaster areas and disasters have caused considerable economic losses and affected the popu-lations in developing and underdeveloped countries in these regions.(2)The clear positive value ofΔs_(13.1.1)found for China reflects the country’s encouraging achievements in disaster preven-tion and mitigation.(3)The value of SDG_(13.1.1)was observed to be increasing in South Asia,northwest Africa and South Africa,with the increase in India and Mauritania being the most *** new method proposed in this paper allows the real trend in the SDG_(13.1.1)indicator in various countries to be derived and provides critical intelligence support for international disaster risk reduction plans and sustainable development goals.

关键词： EM-DAT database the Belt and Road region Sustainable Development Goals SDG13.1.1 indicator disaster risk reduction

The mRNA export pathway in plants

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers in Biology 2011年第3期6卷 246-250页

作者： Oliver XDONG Kaeli JOHNSON Xin LI yuelin zhang National Institute of Biological Sciences Beijing 102206China Michael Smith Laboratories Room 3012185 East MallUniversity of British ColumbiaVancouverBCV6T 1Z4Canada

A double lipid bilayer separating the nucleus from the cytoplasm,termed the nuclear envelope,is a defining feature of *** transport of macromolecules through the nuclear pores enables fine-tuned regulation of biologic *** mature mRNAs are delivered to the cytoplasm from the nucleus via an mRNA export *** work has been done in yeast and animals to study the machinery of mRNA ***,until recently,research on plant mRNA export has been quite ***,bioinformatic,and biochemical investigations have expanded our understanding of the mRNA export process in ***,we review recent progress that has been made elucidating the components of the mRNA export pathway in ***3(MODIFIER OF SNC1,3)/AtNup96 and AtNup160 are both components of the highly conserved Nup107-160 nucleoporin complex and were shown to play key roles in mRNA ***11(MODIFIER OF SNC1,11),which is homologous to the RNA helicase enhancer CIP29 in human,was recently found to be involved in the same pathway as MOS3.A DEAD Box RNA helicase,LOS4(low expression of osmotically responsive genes 4)was also found to play a role in the mRNA export process,putatively by carrying mRNA molecules through the nuclear ***,a protein complex homologous to the yeast TREX-2 complex was also found to play important roles in mRNA export in *** appears that most players in the mRNA export pathway are highly conserved among plants,yeast and animals.

关键词： separating expanded enable

Epigenetic regulation of N-hydroxypipecolic acid biosynthesis by the AIPP3-PHD2-CPL2 complex

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2023年第12期65卷 2660-2671页

作者： Jiameng Lan Siyu Chen Joana Pico Kevin Ao Shitou Xia Shucai Wang Xin Li Simone D.Castellarin yuelin zhang Department of Botany University of British ColumbiaVancouverV6T 1Z4 Canada Laboratory of Plant Molecular Genetics&Crop Gene Editing School of Life SciencesLinyi UniversityLinyi276005 China Wine Research Centre Faculty of Land and Food SystemsUniversity of British ColumbiaVancouver V6T 1Z4Canada Michael Smith Laboratories University of BritishColumbiaVancouverV6T1Z4Canada Hunan Provincial Key Laboratory of Phytohormones Hunan Agricultural UniversityChangsha 410125China College of Life Science Sichuan UniversityChengdu 610064China

N-Hydroxypipecolic acid(NHP)is a signaling molecule crucial for systemic acquired resistance(SAR),a systemic immune response in plants that provides long-lasting and broad-spectrum protection against secondary pathogen *** identify negative regulators of NHP biosynthesis,we performed a forward genetic screen to search for mutants with elevated expression of the NHP biosynthesis gene FLAVIN-DEPENDENT MONOOXYGENASE 1(FMO1).Analysis of two constitutive expression of FMO1(cef)and one induced expression of FMO1(ief)mutants revealed that the AIPP3–PHD2–CPL2 protein complex,which is involved in the recognition of the histone modification H3K27me3 and transcriptional repression,contributes to the negative regulation of FMO1 expression and NHP *** study suggests that epigenetic regulation plays a crucial role in controlling FMO1 expression and NHP levels in plants.

关键词： plant immunity SAR epigenetic regulation NHP FMO1 H3K27me3 transcriptional repression AIPP3 PHD2 CPL2