检索结果-南通市图书馆

Synthetic fungal melanin UV absorbers

Science China Chemistry 2024年第9期67卷 3098-3110页

作者： Chao Wang Rong Zhang Jianhua Zhang Xueqian Zhang Hengjie Zhang Huan Cao Zhen Yang Yiwen Li College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065China Department of Radiology Huaxi MR Research CenterFunctional and Molecular Imaging Key Laboratory of Sichuan ProvinceNational Clinical Research Center for GeriatricsWest China HospitalSichuan UniversityChengdu 610041China

Agents with robust ultraviolet(UV)absorption capabilities play a vital role in safeguarding organisms and inorganic materials from UV ***,the synthetic procedures towards these UV absorbers are usually lengthy and complicated,accompanied by undesirable side reactions and the generation of toxic *** nature,allomelanin,a class of melanins variant found in melanized fungi near the Chernobyl nuclear power plant,plays crucial roles in the cell wall of melanized fungi,offering resistance to harsh external environments and promising UV resistance ***,allomelanin can be rapidly biosynthesized via the polymerization of 1,8-dihydroxynaphthalene in presence of enzymes in *** by this,we report here a green enzymatic polymerization strategy to efficiently and eco-friendly synthesize polydihydroxynaphthalene(PDHN)-based artificial allomelanin nanoparticles(NPs)with interesting *** calculations and experimental results demonstrated that the PDHN NPs exhibited excellent UVabsorption capacity,surpassing another widely used artificial melanin,polydopamine(PDA).Moreover,the light absorption mechanism of PDHN NPs was systematically elucidated for the first ***,the PDHN NPs were incorporated with polyvinyl alcohol(PVA)to create an anti-aging composite film with significantly enhanced UV shielding *** potential of these composite films in safeguarding plants from UV damage was meticulously ***,these PDHN NPs were first found to produce hydroxyl radicals(·OH)under UV irradiation,offering antibacterial properties that expand their potential applications.

关键词： melanin artificial allomelanin nanoparticles green synthesis UV absorption antibacterial

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

Apoplastic barriers of Populus×canescens roots in reaction to different cultivation conditions and abiotic stress treatments

引用

Stress Biology 2023年第1期3卷 269-282页

作者： Paul Grunhofer Ines Heimerich Lena Herzig Svenja Pohl Lukas Schreiber Department of ecophysiology Institute of Cellular and Molecular BotanyUniversity of BonnKirschallee 153115 BonnGermany

Populus is an important tree genus frequently cultivated for economical ***,the high sensitivity of poplars towards water deficit,drought,and salt accumulation significantly affects plant productivity and limits biomass *** cultivation and abiotic stress conditions have been described to significantly induce the formation of apoplastic barriers(Casparian bands and suberin lamellae)in roots of different monocotyledonous crop ***,this study aimed to investigate to which degree the roots of the dicotyledonous gray poplar(Populus×canescens)react to a set of selected cultivation conditions(hydroponics,aeroponics,or soil)and abiotic stress treatments(abscisic acid,oxygen deficiency)because a differing stress response could potentially help in explaining the observed higher stress *** apoplastic barriers of poplar roots cultivated in different environments were analyzed by means of histochemistry and gas chromatography and compared to the available literature on monocotyledonous crop ***,dicotyledonous poplar roots showed only a remarkably low induction or enhancement of apoplastic barriers in response to the different cultivation conditions and abiotic stress *** genetic optimization(e.g.,overexpression of biosynthesis key genes)of the apoplastic barrier development in poplar roots might result in more stress-tolerant cultivars in the future.

关键词： Hydroponics Aeroponics Soil Abscisic acid(ABA) Oxygen deficiency Poplar root suberin

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

Auxin signaling gets oxidative to promote root hair growth

引用

molecular Plant 2024年第5期17卷 696-698页

作者： Victoria Berdion Gabarain Miguel A.Ibeas Hernan Salinas-Grenet Jose M.Estevez Fundación Instituto Leloir&IIBBA-CONICET Av.Patricias Argentinas 435Buenos Aires C1405BWEArgentina Centro de Biotecnología Vegetal Facultad de Ciencias de la VidaUniversidad Andres BelloSantiagoChile ANID Millennium Science Initiative ProgramMillennium Nucleus for the Development of Super Adaptable Plants(MN-SAP)SantiagoChile ANID Millennium Science Initiative ProgramMillennium Institute for Integrative Biology(iBio)SantiagoChile

Root hairs(RHs)emerge as cylindrical cell protrusions from the root epidermis in a polar manner,and these outgrows increase the rhizosphere space to acquire water and nutrients,anchor the plant,and interact with various soil *** is one of the key hormones to promote RH growth,and high levels of auxin are directly promoted by low levels of macronutrients in the soil,such as phosphate(Bhosale et al.,2018)and nitrates(Jia et al.,2023).The nutritional signals for roots,which rapidly change in both time and place within the soil,are tightly linked to signaling pathways that execute swifts on cellular processes to adjust to a challenging *** rapid alkalinization factors(RALFs)are peptides that are released outside the cell and act as peptide-hormone *** attach to the extracellular domains of members of the Catharanthus roseus RECEPTOR-LIKE KINASE 1-LIKE family,specifically FERONIA(FER)in conjunction with its co-receptor LORELEI-LIKE-GPIANCHORED PROTEIN 1.

关键词： soil outside alkali

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

跷跷板运动:平衡植物免疫与生长（英文）

引用

Science Bulletin 2024年第1期 3-6页

作者：邓一文何祖华 National Key Laboratory of Plant molecular Genetics CAS Center for Excellence in Molecular Plant Sciences Institute of Plant Physiology and Ecology Chinese Academy of Sciences

plants face the constant challenge of allocating limited resources to both immunity and growth to ensure survival and reproduction,therefore,one major aim of crop breeding is to balance disease resistance with *** review highlights the intricate interplay between plant immunity and growth,shedding light on the underlying molecular mechanisms and potential strategies for optimizing these vital agronomic *** discuss the role of signaling pathways,epigenetic regulation,long non-coding RNAs,and post-translational modifications in mediating the balance between immunity and *** also highlight recent findings on the rewiring of signals of immunity and growth which provide valuable insights into manipulation of these pathways for crop *** understanding the fine-tuning mechanisms of plant immunity and growth,we can develop innovative approaches to enhance disease resistance in future crops without compromising yield potential.

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

The association between the risk of diabetes and white rice consumption in China:Existing knowledge and new research directions from the crop perspective

引用

农业科学学报:英文版 2023年第10期22卷 3234-3236页

作者： HUANG Min Rice and Product ecophysiology Key Laboratory of Ministry of Education for Crop Physiology and Molecular BiologyHunan Agricultural UniversityChangsha 410128P.R.China

China has the most people with diabetes in the world(IDF2021),and the promotion of a healthy diet is a key public health priority for controlling the prevalence of diabetes in China(Hu 2011).Rice(mainly white rice)is a staple food for more than 60%of the Chinese population(Hu and Sheng 2021).Because white rice has the husk,bran,and embryo completely removed during the milling process,it is low in the dietary fiber,micronutrients,and polyphenols that are conducive to glucose metabolism(Aryaeian et al.2017;McRae et al.2018;Barra et al.2021).In addition.

关键词： white metabolism removed

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 elevated pO_3 on carbon cycle between above andbelowground organs of trees

引用

Journal of Environmental Sciences 2006年第5期18卷 932-936页

作者： LIU Xi-ping Rennenberg Heinz Matyssek Rainer College of Life Sciences Northwest Sci-Tech University of Agriculture and Forestry Yangling 712100 China Institute of Forest Botany and Tree Physiology University Freiburg D-79110 Freiburg Germany Department of Ecopogy/ecophysiology of plants Technical University Munich D-85354 Freising Germany

Translocation of carbohydrate from leaves to roots via phloem and reallocation from roots to leaves via xylem regulate the allocation of carbon （C） between above and belowground organs of trees. To quantitatively analyze effects of elevated ozone concentrations pO3 on the internal cycle of C, juvenile beech and spruce were grown in phytotrons and exposed to ambient and elevated pO3 （i.e. twice-ambient O3 levels, restricted to 〈 150 ppb） for two growing seasons. The translocation of C in the phloem and xylem was quantitatively studied by investigating the phloem/xylem-loading of sugars, the differentiation of stem conductive tissue and the hourly water flow through the stem. Results in the present study shown, elevated pO3 significantly decreased C translocation from shoot to roots in beech by reducing both sugar concentration in the phloem and conductive phloem area. Elevated pO3 also significantly decreased C reallocation from the roots to the shoot in beech by reducing both of sugar concentration in the xylem and transpiration rate. The adverse effects of elevated pO3 on C translocation in the phloem and xylem, however, were small in spruce. Contrasting to beech, spruce is less sensitive to elevated pO3, regarding to phloem differentiation and sugar concentrations in the phloem and xylem.

关键词： beech carbon cycle elevated pO3 phloem spruce xylem

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

An endophytic fungus interacts with the defensinlike protein OsCAL1 to regulate cadmium allocation in rice

引用

molecular Plant 2024年第2期17卷 312-324页

作者： Tianyu Gu Ziai Qi Yating Wang Siying Chen Jing Yan Huapeng Qiu Yanxuan Yu Zjun Fang Junmin Wang Jiming Gong National Key Laboratory of Plant molecular Genetics Shanghai Center for Plant Stress BiologyCAS Center for Excellence in Molecular Plant SciencesChinese AcademyofSciencesShanghai200032China School of Life Science and Technology ShanghaiTech UniversityShanghai 201210China University of the Chinese Academy of Sciences Beijing 100049China Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization College of Life ScienceHunan University of Science and TechnologyXiangtan411201China State Key Laboratory of Crop Stress Adaptation and Improvement School of Life SciencesHenan UniversityKaifeng 475004China Institute of Crops and Nuclear Technology Utilization Zhejiang Academy of Agricultural SciencesHangzhou 310021China

Defensin-like proteins are conserved in multicellular organisms and contribute to innate immune re-sponses against fungal *** rice,defensins play a novel role in regulating cadmium(Cd)efflux from the ***,whether the antifungal activity of defensins correlates with Cd-efflux function remains *** this study,we isolated an endophytic Fusarium,designed Fo1o,by a comparative mi-crobiome analysis of rice plants grown in a paddy contaminated with ***10 is tolerant to high levels of Cd,but is sensitive to the defensin-like protein OsCAL1,which mediates Cd efflux to the *** found that Fo10 symbiosis in rice is regulated by OsCAL1 dynamics,and Fo10 coordinates multiple plant pro-cesses,including Cd uptake,vacuolar sequestration,efflux to the environment,and formation of Fe pla-ques in the *** processes are dependent on the salicylic acid signaling pathway to keep Cd levels low in the cytosol of rice cells and to decrease Cd levels in rice grains without any yield ***10 also plays a role in Cd tolerance in the poaceous crop maize and wheat,but has no observed effects in the eudicot plants Arabidopsis and *** together,these findings provide insights into the mech-anistic basis underlying how afungal endophyte and host plant interact to control Cd accumulation in host plants by adapting defense responses to promotethe establishment ofa symbiosis that permits adaptation to high-Cd environments.

关键词： defensin-like protein Fusarium oxysporum endophyte cadmium allocation

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

In Vitro Antioxidant and Radio Protective Activities of Lycopene from Tomato Extract against Radiation—Induced DNA Aberration

引用

Journal of Biosciences and Medicines 2024年第2期12卷 202-213页

作者： Safaiatul Islam Abu Hena Mostofa Kamal Md. Ziaur Rahman Protul Kumar Roy A.Y.K. Md. Masud Rana molecular Radiobiology and Biodosimetry Division Institute of Food and Radiation Biology Bangladesh Atomic Energy Commission Savar Bangladesh

Background: The accumulation of free radicals is linked to a number of diseases. Free radicals can be scavenged by antioxidants and reduce their harmful effects. It is therefore essential to look for naturally occurring antioxidants that come from plants, as synthetic antioxidants are toxic, carcinogenic and problematic for the environment. Lycopene is one of the carotenoids, a pigment that dissolves in fat and has antioxidant properties. Materials and Methods: The antioxidant and free radical scavenging activity were assessed using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. The impact of lycopene on bacteria (E. coli) susceptibility to γ-radiation was examined by radio sensitivity assay. The study also examined the induction of strand breaks in plasmid pUC19 DNA and how lycopene extract protected the DNA from γ-radiation in vitro. Results: At varying concentrations, lycopene demonstrated its ability to scavenge free radicals such as 2, 2-diphenyl-1-picrylhydrazyl (DPPH). IC50 for lycopene was determined at 112 μg/mL which was almost partial to IC50 of standard antioxidant L-ascorbic acid. The D10 value 180 Gy of E. coli was found to be >2-fold higher in the extract-containing lycopene sample than in the extract-free controls. The lycopene extracts inhibited the radiation-induced deterioration of the plasmid pUC19 DNA. At an IC50 concentration, lycopene provided the highest level of protection. Conclusion: Lycopene functions as an efficient free radical scavenger and possible natural antioxidant source. For cancer patients and others who frequently expose themselves to radiation, lycopene may be a useful plant-based pharmaceutical product for treating a variety of diseases caused by free radicals.

关键词： Radio Protective Antioxidants Free Radical DNA Damage pUC19 Plasmid Gamma Irradiation DPPH

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

Analysis of Intraspecies Diversity of Rice Reveals Variation Patterns of Oryza sativa Basic Leucine Zippers

引用

Phyton-International Journal of Experimental Botany 2024年第5期93卷 859-873页

作者： Jing Wang Wenqing Xiao Qingnan Wang Xu Wang Bin Jiang Yangchun Han Yang Sun Anhui Provincial Key Laboratory of molecular Enzymology and Mechanism of Major Diseases Key Laboratory for Conservation and Use of Important Biological Resources of Anhui ProvinceCollege of Life SciencesAnhui Normal UniversityWuhu241000China Institute of Plant Protection Jiangsu Academy of Agricultural SciencesNanjing210000China

The basic leucine zipper(bZIP)is an important class of transcription factors in plants,playing a critical role in plant growth and development and responses to biotic and abiotic *** to gene presence/absence variations,it is limited to identify bZIP genes based on the reference ***,we performed the bZIP gene family analysis in the rice *** employing a rice pan-genome,ninety-four OsbZIPs(72 core genes and 22 variable genes)were identified and divided into 11 groups in a phylogenetic *** upon Ka/Ks values in 33 accessions,OsbZIPs were subjected to different selection pressures during *** analysis of the effects of structural variations(SVs)on gene expression,gene structure,and conserved domains showed that SVs could significantly alter the expression levels of certain OsbZIPs,leading to gene truncation and the emergence of numerous atypical ***-four differentially expressed OsbZIPs were identified by analyzing RNA-seq data of the Xanthomonas oryzae ***(Xoo)infection susceptible(IR24)and resistant(IRBB67)lines under high temperature,and by counting the number of differentially expressed OsbZIPs in different *** Osb-ZIPs were found to respond to Xoo infection at an early stage and may not be involved in the mechanism of Xa4 and Xa7 resistance to *** multiple variation patterns of OsbZIP genes provide new insights into the OsbZIP genes in *** results provide new resources and offer new directions for functional studies of OsbZIPs.

关键词： Rice OsbZIP pan-genome structure variation atypical gene bacterial blight

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

The Arabidopsis DSO/ABCG 11 Transporter Affects Cutin Metabolism in Reproductive Organs and Suberin in Roots

引用

molecular Plant 2010年第3期3卷 563-575页

作者： David Panikashvili Jian Xin Shi Samuel Bocobza Rochus Benni Franke Lukas Schreiber Asaph Aharoni Department of Plant Sciences Weizrnann Institute of Science PO Box 26 Rehovot 76100 Israel Institute of Cellular and molecular Botany (IZMB) Department of Ecophysiology Kirschallee 1 University of Bonn D-53115 Bonn Germany

Apart from its significance in the protection against stress conditions, the cuticular cover is essential for proper development of the diverse surface structures formed on aerial plant organs. This layer mainly consists of a cutin matrix, embedded and overlaid with cuticular waxes, Following their biosynthesis in epidermal cells, cutin and waxes were suggested to be exported across the plasma membrane by ABCG-type transporters such as DSO/ABCG11 to the cell wall and further to extracellular matrix. Here, additional aspects of DSO/ABCG11 function were investigated, predomi- nantly in reproductive organs, which were not revealed in the previous reports. This was facilitated by the generation of a transgenic DSO/ABCG11 silenced line （dso-4） that displayed relatively subtle morphological and chemical phenotypes. These included altered petal and silique morphology, fusion of seeds, and changes in levels of cutin monomers in flowers and siliques. The dso-4 phenotypes corresponded to the strong DSO/ABCG11 gene expression in the embryo epidermis as well as in the endosperm tissues of the developing seeds. Moreover, the DSO/ABCG11 protein displayed polar localization in the embryo protoderm. Transcriptome analysis of the dso-4 mutant leaves and stems showed that reduced DSO/ABCG11 activity suppressed the expression of a large number of cuticle-associated genes, implying that export of cuticular lipids from the plasma membrane is a rate-limiting step in cuticle metabolism. Surprisingly, root suberin composition of dso-4 was altered, as well as root expression of two suberin biosynthetic genes. Taken together, this study provides new insights into cutin and suberin metabolism and their role in reproductive organs and roots development.

关键词： Arabidopsis transporters flower cutin waxes suberin.

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

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：