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Robust transcriptional indicators of immune cell death revealed by spatiotemporal transcriptome analyses

Molecular Plant 2022年第6期15卷 1059-1075页

作者： Jose Salguero-Linares Irene Serrano Nerea Ruiz-Solani Marta Salas-Gómez Ujjal Jyoti Phukan Victor Manuel González MartíBernardo-Faura Marc Valls david rengel Nuria S.Coll Centre for Research in Agricultural Genomics(CRAG) CSIC-IRTA-UAB-UBCampus UABBellaterra08193 BarcelonaSpain LIPM Universitéde ToulouseINRACNRS84195 Castanet-TolosanFrance INRAE GeT-PlaGeGenotoul31326 Castanet-TolosanFrance Department of Genetics Universitat de Barcelona08028 BarcelonaSpain Consejo Superior de Investigaciones Científicas(CSIC) BarcelonaSpain Department of Plant Molecular Biology and Physiology.Albrechtvon Haller Institute for Plant Sciences niversity of GottingenJulia-Lermontowa-Weg3.37077 GottingenGrmany Institut de Phammacologie et de Biologie Structurale IPBS Universite deToulouse CNRSUPSBP 64182205 route de Nartxonne310077 Toulouse Cedex 04France

Recognition of a pathogen by the plant immune system often triggers a form of regulated cell death traditionally known as the hypersensitive response(HR).This type of cell death occurs precisely at the site of pathogen recognition,and it is restricted to a few cells.Extensive research has shed light on how plant immune receptors are mechanistically activated.However,two central key questions remain largely unresolved:how does cell death zonation take place,and what are the mechanisms that underpin this phenomenon?Consequently,bona fide transcriptional indicators of HR are lacking,which prevents deeper insight into its mechanisms before cell death becomes macroscopic and precludes early or live observation.In this study,to identify the transcriptional indicators of HR we used the paradigmatic Arabidopsis thaliana–Pseudomonas syringae pathosystem and performed a spatiotemporally resolved gene expression analysis that compared infected cells that will undergo HR upon pathogen recognition with bystander cells that will stay alive and activate immunity.Our data revealed unique and time-dependent differences in the repertoire of differentially expressed genes,expression profiles,and biological processes derived from tissue undergoing HR and that of its surroundings.Furthermore,we generated a pipeline based on concatenated pairwise comparisons between time,zone,and treatment that enabled us to define 13 robust transcriptional HR markers.Among these genes,the promoter of an uncharacterized AAA-ATPase was used to obtain a fluorescent reporter transgenic line that displays a strong spatiotemporally resolved signal specifically in cells that will later undergo pathogen-triggered cell death.This valuable set of genes can be used to define cells that are destined to die upon infection with HR-triggering bacteria,opening new avenues for specific and/or high-throughput techniques to study HR processes at a single-cell level.

关键词： Arabidopsis thaliana cell death indicator effector-triggered immunity hypersensitive response pattern-triggered immunity plant immunity Pseudomonas syringae

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Disentangling the contributions of arbuscular mycorrhizal fungi to soil multifunctionality

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Pedosphere 2024年第2期34卷 269-278页

作者： Fayuan WANG Zed rengel College of Environment and Safety Engineering Qingdao University of Science and TechnologyQingdao 266042(China) UWA School of Agriculture and Environment University of Western AustraliaPerth WA 6009(Australia) Institute for Adriatic Crops and Karst Reclamation Split 21000(Croatia)

Soil multifunctionality represents a range of soil processes driven by the interactions between soil abiotic and biotic components.As a group of ubiquitous fungi that form mutualistic symbiotic associations with a vast array of terrestrial plants,arbuscular mycorrhizal(AM)fungi may play a critical role in maintaining soil multifunctionality,but the characteristics of their contributions remain to be unraveled.This mini review aims to disentangle the contributions of AM fungi to soil multifunctionality.We provide a framework of concepts about AM fungi making crucial contributions to maintaining multiple soil functions,including primary productivity,nutrient cycling,water regulation and purification,carbon and climate regulation,habitat for biodiversity,disease and pest control,and pollutant degradation and detoxification,via a variety of pathways,particularly contributing to soil and plant health.This review contends that AM fungi,as a keystone component of soil microbiome,can govern soil multifunctionality,ultimately promoting ecosystem services.

关键词： carbon neutrality ecosystem functions and services nutrient cycling organic matter decomposition soil functions

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The necessity to expand mycorrhizal boundaries:Including the fungal endophytes that possess key mycorrhizal criteria

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Pedosphere 2024年第2期34卷 520-523页

作者： Khalil KARIMAN Zed rengel Rodica PENA Saleh RAHIMLOU Mark TIBBETT UWA School of Agriculture and Environment The University of Western AustraliaPerth WA 6009Australia Department of Sustainable Land Management&Soil Research Centre School of AgriculturePolicy and DevelopmentUniversity of ReadingReading RG66ARUK Department of Ecology and Evolutionary Biology University of MichiganAnn Arbor MI 48109USA

Dear editor,This letter aims to urge the necessity to expand the boundaries of mycorrhizal symbiosis to include certain root fungal endophytes.The conventional classification of mycorrhizal associations emphasizes spe... 详细信息

关键词： editor specialized interface

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Spatiotemporal variation and evaluation of agriculture green development: a case study of Hainan Province, China

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Frontiers of Agricultural Science and Engineering 2024年第1期11卷 83-99页

作者： Tianxiang YU Jichen ZHOU Lin MA Fusuo ZHANG Zed rengel William JDAVIES Jianbo SHEN Department of Plant Nutrition College of Resources and Environmental SciencesCenter for ResourcesEnvironment and Food SecurityKey Laboratory of Plant-Soil interactionsMOENational Academy of Agriculture Green DevelopmentChina Agricultural UniversityBeijing 100193China Sanya Institute of China Agricultural University Sanya 572025China Soil Physics and Land Management Group Wageningen UniversityP.O.Box 476700 AA Wageningenthe Netherlands Key Laboratory of Agricultural Water Resources Center for Agricultural Resources ResearchInstitute of Genetic and Developmental BiologyChinese Academy of SciencesShijiazhuang 050021China Soil Science and Plant Nutrition UWA School of Agriculture and EnvironmentThe University of Western AustraliaPerth WA 6009Australia Institute for Adriatic Crops and Karst Reclamation 21000 SplitCroatia Lancaster Environment Centre University of LancasterLancaster LA14YQUK

The realization of green and sustainable development of agriculture is the common pursuit all over the world. Agriculture green development(AGD)program has been proposed as a sustainable development strategy in China,but insufficient is known about the quantitative evaluation of spatiotemporal variation in AGD at the regional scale. This study aimed to assess spatiotemporal patterns in AGD at the county/city-based regional level. For this purpose, a systematic index evaluation system was developed to assess the performance of socioeconomic, food production and environmental components in a key economic region(Hainan Province) of China. Hainan improved its AGD index(representing the overall performance toward achieving AGD) from 38.8 in 1988 to 40.9 in 2019. The socioeconomic development and agricultural productivity have improved with time;environmental quality declined due to overuse of chemicals from 1988 to 2013, but steadily improved after 2013, indicating positive effects of reducing chemical input. There was a higher AGD index in the coastal vs. central regions and the southern vs. northern regions. Scenarios featuring improved nutrient management or optimized diet structure and reduced waste improved economic benefits and social productivity while concurrently reducing environmental degradation. These results provide new insights for the future development of green and sustainable agriculture and formulation of agricultural policies in Hainan Province of China and even other developing countries that are facing or will soon face similar challenges.

关键词： Agriculture environmental impact green and sustainable development Hainan Province index evaluation system

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Green intelligent fertilizers——A novel approach for aligning sustainable agriculture with green development

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Frontiers of Agricultural Science and Engineering 2024年第1期11卷 186-196页

作者： Maoying WANG Lingyun CHENG Chengdong HUANG Yang LYU Lin ZHANG Zhenya LU Changzhou WEI Wenqi MA Zed rengel Jianbo SHEN Fusuo ZHANG State Key Laboratory of Nutrient Use and Management College of Resources and Environmental SciencesNational Academy of Agriculture Green DevelopmentKey Laboratory of Plant–Soil Interactions(Ministry of Education)China Agricultural UniversityBeijing 100193China College of Agronomy Shihezi UniversityShihezi 832000China College of Resources and Environmental Science Hebei Agricultural UniversityBaoding 071000China Soil Science and Plant Nutrition UWA School of Agriculture and EnvironmentThe University of Western AustraliaPerthWA 6009Australia Institute for Adriatic Crops and Karst Reclamation Split 21000Croatia

This review addresses the growing disparity between the current state of fertilizer production in China and the evolving demands of green agriculture in the 21st century. It explores major advances in fertilizers, proposes the concept of green intelligent fertilizers and develops new strategies aligned with the principles of green development in fertilizer industry and agriculture.Green intelligent fertilizers may be designed to maximize the synergistic effects among plants, soils, microorganisms, nutrient sources and the environment. This concept emphasizes the integration of industry and agriculture toward green development for entire industry chain, using an interdisciplinary approach to drive the green transformation of fertilizer industry, and promote green and sustainable development of agriculture. By bridging the gap between the current state of fertilizer industry and a growing need for environmentally responsible agricultural practices, this review highlights a path toward harmonizing fertilizer production with the imperatives of green agriculture.

关键词： Root-nutrient feedback green development intelligent fertilizers new fertilizer plant-soil-fertilizer interaction rhizosphere engineering

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Interactive effects of phosphorus deficiency and exogenous auxin on root morphological and physiological traits in white lupin (Lupinus albus L.)

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Science China(Life Sciences) 2013年第4期56卷 313-323页

作者： TANG HongLiang SHEN JianBo ZHANG FuSuo rengel Zed Centre for Resources Environment and Food Security Department of Plant Nutrition Key Laboratory of Plant-Soil Interactions Ministry of Education China Agricultural University College of Life Science Hebei University Soil Science & Plant Nutrition School of Earth and Environment The University of Western Australia

White lupin (Lupinus albus) exhibits strong root morphological and physiological responses to phosphorus (P) deficiency and auxin treatments, but the interactive effects of P and auxin in regulating root morphological and physiological traits are not fully understood. This study aimed to assess white lupin root traits as influenced by P (0 or 250 μmol L-1 ) and auxin (10-8 μmol L-1 NAA) in nutrient solution. Both P deficiency and auxin treatments significantly altered root morphological traits, as evidenced by reduced taproot length, increased number and density of first-order lateral roots, and enhanced cluster-root formation. Changes in root physiological traits were also observed, i.e., increased proton, citrate, and acid phosphatase exudation. Exogenous auxin enhanced root responses and sensitivity to P deficiency. A significant interplay exists between P and auxin in the regulation of root morphological and physiological traits. Principal component analysis showed that P availability explained 64.8% and auxin addition 21.3% of the total variation in root trait parameters, indicating that P availability is much more important than auxin in modifying root responses of white lupin. This suggests that white lupin can coordinate root morphological and physiological responses to enhance acquisition of P resources, with an optimal trade-off between root morphological and physiological traits regulated by external stimuli such as P availability and auxin.

关键词：根系形态性状外源生长素白羽扇豆生理性状缺磷生理反应根系性状柠檬酸盐

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Toxicity of cadmium and its competition with mineral nutrients for uptake by plants:A review

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Pedosphere 2020年第2期30卷 168-180页

作者： Shiyu QIN Hongen LIU Zhaojun NIE Zed rengel Wei GAO Chang LI Peng ZHAO College of Resources and Environment Henan Agricultural University/Key Laboratory of Soil Pollution and Remediation of Henan ProvinceZhengzhou 450002China UWA School of Agriculture and Environment University of Western AustraliaPerth WA 6009Australia

Cadmium(Cd)is a toxic heavy metal occurring in the environment naturally and is also generated through various anthropogenic sources and acts as a pollutant.Human health is affected by Cd pollution in farmland soils because food is the main source of Cd intake in the non-smoking population.For crops,Cd toxicity may result from a disturbance in uptake and translocation of mineral nutrients and disturbance in plant metabolism,inhibiting plant growth and development.However,plants have Cd tolerance mechanisms,including restricted Cd uptake,decreased Cd root-to-shoot translocation,enhanced antioxidant enzyme activities,and increased production of phytochelatins.Furthermore,optimal supply of mineral nutrients is one of the strategies to alleviate the damaging effects of Cd on plants and to avoid its entry into the food chain.The emerging molecular knowledge contributes to understanding Cd uptake,translocation,and remobilization in plants.In this review,Cd toxicity and tolerance mechanisms,agricultural practices to minimize Cd accumulation,Cd competition with essential elements(calcium,copper,iron,zinc,and manganese),and genes associated with Cd uptake are discussed in detail,especially regarding how these mineral nutrients and genes play a role in decreasing Cd uptake and accumulation in crop plants.

关键词： antagonistic interaction gene regulation heavy metal mitigation measures tolerance toxicity uptake and transport

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^(15)N isotope fractionation in an aquatic food chain:Bellamya aeruginosa(Reeve) as an algal control agent

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Journal of Environmental Sciences 2010年第2期22卷 242-247页

作者： Shiqun Han Shaohua Yan Kaining Chen Zhenhua Zhang rengel Zed Jianqiu Zhang Wei Song Haiqin Liu Institute of Agricultural Resources and Environments Jiangsu Academy of Agricultural Sciences Nanjing 210014 China Nanjing Institute of Geography & Limnology Chinese Academy of Sciences Nanjing 210014 China School of Earth and Environment The University of Western Australia 35 Stirling Highway Crawley WA 6009 Australia

^ 15N isotope tracer techniques and ecological modeling were adopted to investigate the fractionation of nitrogen, its uptake and transformation in algae and snail （Bellamya aeruginosa Reeve）. Different algal species were found to differ in their uptake of nitrogen isotopes. Microcystis aeruginisa Ktitz. demonstrated the greatest ^15N accumulation capacity, with the natural variation in isotopic ratio （δ^15N） and the isotope fractionation factor （ε,‰） being the highest among the species investigated. The transformation and utilization of ^15N by snails differed depending on the specific algae consumed （highest for Chlorella pyrenoidosa Chick., lowest for M. aeruginisa）. When snails was seeded in the experimental pond, the algae population structure changed significantly, and total algal biomass as well as the concentration of all nitrogen species decreased, causing an increase in water transparency. A model, incorporating several chemical and biological parameters, was developed to predict algal biomass in an aquatic system when snails was present. The data collected during this investigation indicated that the gastropods such as snails could significantly impact biological community and water quality of small water bodies, suggesting a role for biological control of noxious algal blooms associated with eutrophication.

关键词： ^15N fractionation algal bloom Bellamya aeruginosa ecological modeling eutrophication

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Influence of ammonium and nitrate supply on growth, nitrate reductase activity and N-use efficiency in a natural hybrid pine and its parents

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Journal of Plant Ecology 2011年第4期4卷 275-282页

作者： Buqing Yao Jing Cao Changming Zhao Zed rengel Key Laboratory of Arid and Grassland Ecology Ministry of EducationSchool of Life SciencesLanzhou UniversityLanzhou 730000GansuPeople’s Republic of China School of Earth and Environment The University of Western Australia35 Stirling HighwayCrawleyWA 6009Australia

Selection of tree species with a high capacity to assimilate N and efficiently utilize N resources would facilitate the success of initial tree seedling establishment in infertile soils.The preference for N forms was tested using three pine species(Pinus densata,Pinus tabuliformis and Pinus yunnanensis).Pinus densata is a natural diploid hybrid between P.tabuliformis and P.yunnanensis.Methods Seedlings of three pine species were supplied with nitrate-N,ammonium-N(at two different pH regimes)or combined ammonium and nitrate as a nitrogen source in perlite culture in a controlled environment.Important Findings Seedlings of P.densata had higher total biomass and net photosynthesis when supplied with nitrate-N and ammonium nitrate than with ammonium-N.In parental species,total biomass and net photosynthesis for P.yunnanensis seedlings was higher in ammonium-N than in nitrate-N,whereas the other parental species P.tabuliformis had the highest total biomass among species for all treatments except ammonium with CaCO_(3).Most morphological traits in P.densata seedlings were intermediate between its two parental species.However,N-use efficiency and photosynthetic N-use efficiency of P.densata significantly exceeded both parents when supplied with nitrate-N and ammonium nitrate.The results suggested that the diploid hybrid tree species P.densata has a preference for nitrate and is not well adapted to ammonium-N as a sole nitrogen source regardless of the growth medium pH.Based on changes in environmental conditions,such as predicted future temperature increases in high altitude areas associated with climate change,P.densata is likely to be increasingly competitive and have wide adaptation in high altitude regions.

关键词： diploid hybrid Pinus densata N forms rootshoot characteristics photosynthetic N-use efficiency nitrate reductase

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In-situ nitrogen removal from the eutrophic water by microbial-plant integrated system

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2006年第7期7卷 521-531页

作者： CHANG Hui-qing YANG Xiao-e FANG Yun-ying PU Pei-min LI Zheng-kui rengel Zed Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health School of Natural Resources and Environmental Science Zhejiang University Hangzhou 310029 China Department of Geography and Environment Nanjing University Nanjing 210008 China Soil Science and Plant Nutrition School of Earth and Geographical Sciences University of Western Australia Crawley WA 6009 Australia

Objective: This study was to assess the influence of interaction of combination of immobilized nitrogen cycling bacteria (INCB) with aquatic macrophytes on nitrogen removal from the eutrophic waterbody, and to get insight into different mechanisms involved in nitrogen removal. Methods: The aquatic macrophytes used include Eichhornia crassipes (sum-mer-autumn floating macrophyte), Elodea nuttallii (winter-growing submerged macrophyte), and nitrogen cycling bacteria in-cluding ammonifying, nitrosating, nitrifying and denitrifying bacteria isolated from Taihu Lake. The immobilization carriers materials were made from hydrophilic monomers 2-hydroxyethyl acrylate (HEA) and hydrophobic 2-hydroxyethyl methylacrylate (HEMA). Two experiments were conducted to evaluate the roles of macrophytes combined with INCB on nitrogen removal from eutrophic water during different seasons. Results: Eichhornia crassipes and Elodea nuttallii had different potentials in purification of eutrophic water. Floating macrophyte+bacteria (INCB) performed best in improving water quality (during the first experiment) and decreased total nitrogen (TN) by 70.2%, nitrite and ammonium by 92.2% and 50.9%, respectively, during the experimental period, when water transparency increased from 0.5 m to 1.8 m. When INCB was inoculated into the floating macrophyte system, the populations of nitrosating, nitrifying, and denitrifying bacteria increased by 1 to 2 orders of magnitude compared to the un-inoculated treatments, but ammonifying bacteria showed no obvious difference between different treatments. Lower values of chlorophyll a, CODMn, and pH were found in the microbial-plant integrated system, as compared to the control. Highest reduction in N was noted during the treatment with submerged macrophyte+INCB, being 26.1% for TN, 85.2% for nitrite, and 85.2% for ammonium at the end of 2nd experiment. And in the treatment, the populations of ammonifying, nitrosating, nitrifying, and de-nitrifying bacteria increased by 1 to 3 orders of magnitude, as compared

关键词：氮固氮菌 INCB 超营养作用伊乐藻生态系统

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