检索结果-南通市图书馆

Carbon Monoxide Modulates Auxin Transport and Nitric Oxide signaling in Plants under Iron Deficiency Stress

Phyton-International Journal of Experimental Botany 2024年第1期93卷 45-61页

作者： Kaiyue Hong Yasmina Radani Waqas Ahmad Ping Li Yuming Luo Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental ProtectionHuaiyin Normal UniversityHuaian223300China School of Life Sciences Nanjing Forestry UniversityNanjing210037China School of Life Sciences Shanghai UniversityShanghai200444China

Carbon monoxide(CO)and nitric oxide(NO)are signal molecules that enhance plant adaptation to environmental stimuli.Auxin is an essential phytohormone for plant growth and development.CO and NO play crucial roles in modulating the plant’s response to iron deficiency.Iron deficiency leads to an increase in the activity of heme oxygenase(HO)and the subsequent generation of CO.Additionally,it alters the polar subcellular distribution of Pin-Formed 1(PIN1)proteins,resulting in enhanced auxin transport.This alteration,in turn,leads to an increase in NO accumulation.Furthermore,iron deficiency enhances the activity of ferric chelate reductase(FCR),as well as the expression of the Fer-like iron deficiency-induced transcription factor 1(FIT)and the ferric reduction oxidase 2(FRO2)genes in plant roots.Overexpression of the long hypocotyl 1(HY1)gene,which encodes heme oxygenase,or the CO donor treatment resulted in enhanced basipetal auxin transport,higher FCR activity,and the expression of FIT and FRO2 genes under Fe deficiency.Here,a potential mechanism is proposed:CO and NO interact with auxin to address iron deficiency stress.CO alters auxin transport,enhancing its accumulation in roots and up-regulating key iron-related genes like FRO2 and IRT1.Elevated auxin levels affect NO signaling,leading to greater sensitivity in root development.This interplay promotes FCR activity,which is crucial for iron absorption.Together,these molecules enhance iron uptake and root growth,revealing a novel aspect of plant physiology in adapting to environmental stress.

关键词： Carbon monoxide nitric oxide auxin iron deficiency signal molecule plants

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

Role of PLC-PIP2 and cAMP-PKA signal Pathways in Radiation-induced Immune-suppressing Effect

引用

Biomedical and Environmental Sciences 2014年第1期27卷 27-34页

作者： DONG Juan Cong CHENG Guang Hui SHAN Yu Xing WU Ning SHAO Ming Long LI Peng Wu JIN Shun Zi Ministry of Health Key Laboratory of Radiobiology Jilin University Department of Radiation Oncology China-Japan Union Hospital of Jilin University Department of Orthopedics First Hospital of Jilin University

Objective The purpose of the present study was to observe the changes in CD4＋CD25＋Nrpl＋Treg cells after irradiation with different doses and explore the possible molecular mechanisms involved. Methods ICR mice and mouse lymphoma cell line （EL-4 cells） was used. The expressions of CD4, CD25, Nrpl, calcineurin and PKC-α were detected by flow cytometry. The expressions of TGF-131, IL-10, PKA and cAMP were estimated with ELISA. Results At 12 h after irradiation, the expression of Nrpl increased significantly in 4.0 Gy group, compared with sham-irradiation group （P〈0.05） in the spleen and thymus, respectively, when ICR mice received whole-body irradiation （WBI）. Meanwhile the synthesis of Interleukin 10 （IL-20） and transforming growth factor-β1 （TGF-β1） increased significantly after high dose irradiation （HDR）（〉 or = 1.0 Gy）. In addition, the expression of cAMP and PKA protein increased, while PKC-α, calcineurin decreased at 12h in thymus cells after 4.0 Gy X-irradiation. While TGF-β1 was clearly inhibited when the PLC-PIP2 signal pathway was stimulated or the cAMP-PKA signal pathway was blocked after 4.0 Gy X-irradiation, this did not limit the up-regulation of CD4＋CD25＋Nrpl＋Treg cells after ionizing radiation. Conclusion These results indicated that HDR might induce CD4＋CD25＋Nrpl＋Treg cells production and stimulate TGF-β1 secretion by regulating signal molecules in mice.

关键词： Ionizing radiation Neuropilin-1 （Nrpl） Regulatory T cells signal molecule

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

The role of signal production and transduction in induced resistance of harvested fruits and vegetables

引用

Food Quality and Safety 2021年第3期5卷 205-212页

作者：王斌毕阳 College of Food Science and Engineering Gansu Agricultural UniversityLanzhouChina

Postharvest diseases are the primary reason causing postharvest loss of fruits and vegetables.Although fungicides show an effective way to control postharvest diseases,the use of fungicides is gradually being restricted due to safety,en vironmental polluti on,and resista nee developme nt in the pathogens.Induced resista nee is a new strategy to control postharvest diseases by eliciti ng immune activity in fruits and vegetables with exogenous physical,chemical,and biological elicitors.After being stimulated by elicitors,fruits and vegetables respond immediately against pathoge ns.This process is actually a conti nuous signal tra nsducti on,in eluding the generati on,transduction,and interact!on of signal molecules.Each step of response can lead to corresponding physiological functi ons,and ultimately induce disease resista nee by upregulating the expressi on of disease resista nee genes and activati ng a variety of metabolic pathways.signal molecules not only mediate defe nse resp onse alone,but also in teract with other signal tra nsducti on pathways to regulate the disease resista nee resp on se.Among various signal molecules,the sec ond messenger(reactive oxygen species,nitric oxide,calcium ions)and plant hormones(salicylic acid,jasmonic acid,ethylene,and abscisic acid)play an importa nt role in induced resista nee.This article summarizes and reviews the research progress of induced resista nee in recent years,and expounds the role of the above-me ntioned signal molecules in induced resista nee of harvested fruits and vegetables,and prospects for future research.

关键词： Fruits and vegetables induce resistance signal molecule production transduction.

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

Current Opinions on the Functions of Tocopherol Based on the Genetic Manipulation of Tocopherol Biosynthesis in Plants

引用

Journal of Integrative Plant Biology 2008年第9期50卷 1057-1069页

作者： Yin Li Zinan Wang Xiaofen Sun Kexuan Tang State Key Laboratory of Genetic Engineering School of Life Sciences Fudan-SJTU-Nottingham Plant Biotechnology R&D Center Fudan University Shanghai 200433 China Plant Biotechnology Research Center School of Agriculture and Biology Fudan-SJTU-Nottingham Plant Biotechnology R&D Center Shanghai Jiao Tong University Shanghai 200030 China

As a member of an important group of lipid soluble antioxidants, tocopherols play a paramount role in the daily diet of humans and animals. Recently, genes required for tocochromanol biosynthesis pathway have been identified and cloned with the help of genomics-based approaches and molecular manipulation in the model organisms： Arabidopsis thaliana and Synechocystis sp. PCC 6803. At the basis of these foundations, genetic manipulation of tocochromanol biosynthesis pathway can give rise to strategies that enhance the level of tocochromanol content or convert the constitution of tocochromanol. In addition, genetic manipulations of the tocochromanol biosynthesis pathway provide help for the study of the function of tocopherol in plant systems. The present article summarizes recent advances and pays special attention to the functions of tocopherol in plants. The roles of tocopherol in the network of reactiv.e oxygen species, antioxidants and phytohormones to maintain redox homeostasis and the functions of tocopherol as a signal molecule in chloroplast-to- nucleus signaling to regulate carbohydrate metabolism are also discussed.

关键词： antioxidant carbohydrate metabolism genetic dissection programmed cell death redox homeostasis signal molecule tocopherol.

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

Nitric Oxide and Brassinosteroids Mediated Fungal Endophyte-Induced Volatile Oil Production Through Protein Phosphorylation Pathways in Atractylodes lancea Plantlets

引用

Journal of Integrative Plant Biology 2013年第11期55卷 1136-1146页

作者： Cheng-Gang Ren Chuan-Chao Dai Jiangsu Key Laboratory for Microbes and Functional Genomics Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources College of Life Sciences in Nanjing Normal University

Fungal endophytes have been isolated from almost every plant, infecting their hosts without causing visible disease symptoms, and yet have still proved to be involved in plant secondary metabolites accumulation. To decipher the possible physiological mechanisms of the endophytic fungus-host interaction, the role of protein phosphorylation and the relationship between endophytic fungus-induced kinase activity and nitric oxide （NO） and brassinolide （BL） in endophyte-enhanced volatile oil accumulation in Atractylodes lancea plantlets were investigated using pharmacological and biochemical approaches. Inoculation with the endophytic fungus Gilmaniella sp. ALl2 enhanced the activities of total protein phosphorylation, Ca2^-dependent protein kinase, and volatile oil accumulation in A. lancea plantlets. The upregulation of protein kinase activity could be blocked by the BL inhibitor brassinazole. Furthermore, pretreatments with the NO-specific scavenger cPTIO significantly reduced the increased activities of protein kinases in A. lancea plantlets inoculated with endophytic fungus. Pretreatments with different protein kinase inhibitors also reduced fungus-induced NO production and volatile oil accumulation, but had barely no effect on the BL level. These data suggest that protein phosphorylation is required for endophyte- induced volatile oil production in A. lancea plantlets, and that crosstalk between protein phosphorylation and the NO pathway may occur and act as a downstream signaling event of the BL pathway.

关键词： Atractylodes lancea endophytic fungus protein phosphorylation signal molecule volatile oi1.

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

Soil phyllosilicate and iron oxide inhibit the quorum sensing of Chromobacterium violaceum

引用

Soil Ecology Letters 2021年第1期3卷 22-31页

作者： Shanshan Yang Chenchen Qu Manisha Mukherjee Yichao Wu Qiaoyun Huang Peng Cai State Key Laboratory of Agricultural Microbiology College of Resources and EnvironmentHuazhong Agricultural UniversityWuhan 430070China Singapore Centre for Environmental Life Sciences Engineering Nanyang Techological UniversitySingaporeSingapore 637551 School of Civil and Environmental Engineering Nanyang Technological UniversitySingaporeSingapore 639798

Microorganisms respond to various adverse environmental conditions and regulate different physiological functions by secreting and sensing signal molecules through quorum sensing(QS)systems.Phyllosilicates and iron oxides present in soils and sediments may have substantial impact on bacterial activity and QS due to their unique reactivity and close association with microorganisms.This research explored the effect of goethite,montmorillonite and kaolinite(0.05–2gL^(–1))on the growth and QS of a bacterial model,Chromobacterium violaceum.The results showed that kaolinite and goethite caused cellular damage at low mineral concentrations.The capacity for violacein production and biofilm formation of C.violaceum were inhibited by the minerals in the order of kaolinite>goethite>montmorillonite.The possible underlying mechanisms for QS inhibition by different minerals were investigated.Specifically,kaolinite repressed QS function through downregulation the expression of signal molecules synthesis gene cviI.Goethite and montmorillonite interfered with QS by adsorption of extracellular signal molecules.This work provides a better understanding of the interactions between bacteria and minerals and proposed that the inhibition of QS system is an ignored mechanism for bacterial toxicity by phyllosilicates and iron oxides.

关键词： Violacein Quorum sensing signal molecule Soil mineral

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

Novel anti-cancer agents can induce apoptosis and suppress tumor in vivo

Novel anti-cancer agents can induce apoptosis and suppress t...

引用

中国化学会第27届学术年会

作者：刘平王艰 Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences

＜正＞In 1997 scientists [1] discovered the specific area of cell membrane played important roles in signal transduction. In 21 century, more receptors have been uncovered, which greatly helped new anti-cancer drug di... 详细信息

关键词： anti-cancer apoptosis in vivo signal molecule

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

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

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

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：