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Differential Expression of Rice Valine-Qlutamine Gene Family in Response to Nitric Oxide and Regulatory Circuit of OsVQ7 and OsWRKY24

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Rice science 2020年第1期27卷 10-20页

作者： PENG Xixu XIAO Ting MENG Jiao TAO Zong ZHOU Dinggang TANG Xinke WANG Haihua School of Life Science Hunan University of Science and TechnologyXiangtan 411201China key laboratory of Integrated Management of the Pests and Diseases on Horticultural Crops in Hunan Province Xiangtan 411201China key laboratory of ecological remediation and safe utilization of heavy metal-polluted soils College of Hunan ProvinceXiangtan 411201China

The functional diversity of plant valine-qlutamine(VQ) proteins is closely associated with their partners WRKY transcription factors, and also with a complex network of signaling pathways that mediated by hormone molecules. We reported genome-wide expression profiles of differentially expressed rice VQ genes under nitric oxide(NO) treatment based on a microarray analysis. Cluster analysis of expression patterns revealed that some VQ genes and WRKY genes shared similar expression trends. Prediction of cis-elements showed that W-box or W-box-like sequences were overrepresented within the promoters of most of NO-responsive VQ genes. In particular, the similarly expressed Os VQ7 and Os WRKY24 showed great induction upon NO triggering. Transient expression assay and chromatin immunoprecipitation analysis demonstrated that OsWRKY24 was specifically bound to the promoter regions of Os VQ7 and Os WRKY24 itself, which contain multiple copies of W-box or W-box-like cis-elements. Yeast-two-hybrid assay indicated that OsWRKY24 can interact physically with OsVQ7 through the C-terminal of WRKY domain. The results suggested that OsVQ7 and OsWRKY24 may form an auto-and cross-regulation circuit that is required for tight regulation and fine-tuning of physiological processes they are involved in. These findings provided a solid foundation for exploring the specific functions of the VQ protein family in NO signaling pathway.

关键词： rice valine-qlutamine protein expression profile WRKY transcription factor nitric oxide regulatory circuit

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Characterisation of manganese toxicity tolerance in Arabis paniculata

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Plant Diversity 2021年第2期43卷 163-172页

作者： Ting Tang Faqing Tao Weiqi Li School of Life Sciences Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated UtilizationKey Laboratory of Ecological Remediation and Safe Utilization of Heavy Metal-Polluted SoilsHunan University of Science and TechnologyXiangtan411201China Plant Germplasm and Genomics Center Germplasm Bank of Wild SpeciesKunming Institute of BotanyChinese Academy of SciencesKunming650201China

Manganese(Mn)contamination limits the production and quality of crops,and affects human health by disrupting the food *** paniculata is a pioneer species of Brassicaceae found in mining areas,and has the ability to accumulate heavy ***,little is known about the genetic mechanisms of Mn tolerance in *** this study,we found that Mn tolerance and ability to accumulate Mn were higher in *** than in Arabidopsis *** mechanisms underlying the response and recovery of *** to Mn toxicity were further investigated using transcriptome analysis.A total of 69,862,281 base pair clean reads were assembled into 61,627 high-quality unigenes,of which 41,591(67.5%)and 39,297(63.8%)were aligned in the Kyoto Encyclopedia of Genes and Genomes(KEGG)and Gene Ontology(GO),*** response to Mn toxicity,genes were expressed in twelve distinct patterns,which can be divided into four general categories:initial,stable,dose-dependent,and *** that were differentially expressed during Mn response and recovery belong to several dominant KEGG *** early response to Mn toxicity in *** includes the upregulation of genes involved in glutathione ***-binding cassette(ABC)transporter proteins were up-regulated during the entire response phase,and genes involved in glycerophospholipid metabolism were upregulated during the late phase of the Mn *** in the phenylpropanoid pathway were differentially expressed in the repair process after Mn *** findings reveal ideal material and genetic resources for phytoremediation in Mn-contaminated areas and highlight new knowledge and theoretical perspectives on the mechanisms of Mn tolerance.

关键词： Arabis paniculata Manganese toxicity Transcriptome Gene expression

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First detection of Diaporthe eucommiae causing leaf black blight disease on Cyclocarya paliurus

First detection of Diaporthe eucommiae causing leaf black bl...

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中国植物病理学会第十一届全国会员代表大会暨2018年学术年会

作者： Jiang Dan He Huanhuan Peng Xixu Tao Zong Xiao Ting Wang Haihua School of Life Science Hunan University of Science and Technology key laboratory of ecological remediation and safe utilization of heavy metal-polluted soils College of Hunan Province

During the vegetation period(March to October) of 2013 and 2014,an outbreak of leaf black blight was observed on Cyclocarya paliurus plants in three plantations in Chengbu County,Hunan Province,China.A Diaporthe species was consistently isolated from the diseased leaflets or *** on the morphological characteristics of colony appearance,shape of conidia and conidiomata as well as sequences of internal transcribed spacer regions(ITS),the fungus was identified as Diaporthe *** test showed that *** isolates caused the symptoms originally observed on those of naturally infected plants,and the pathogenic isolates were successfully re-isolated from inoculated leaflets,thus fulfilling Koch’s *** is the first report of *** causing leaf black blight on *** screening indicated that the *** isolates were highly sensitive to thiophanate-methyl,chlorothalonil and iprodione,suggesting that practical use of these three fungicides has high potentials to control the leaf black blight on ***.

关键词： Diaporthe eucommiae Leaf black blight Identification of pathogen Cyclocarya paliurus

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ecological Risk Assessment of heavy metals Pollution in Soil and Lotus Seeds in Xiangtan Lotus Planting Area

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Meteorological and Environmental Research 2023年第4期14卷 34-37,41页

作者： Hui YU Linna CHEN College of Life and Health Sciences Key Laboratory of Ecological Remediation and Safe Utilization of Heavy Metal-Polluted SoilsKey Laboratory of Economic Crops Genetic Improvement and Integrated UtilizationHunan University of Science and TechnologyXiangtan 411201China

In order to study the pollution characteristics and potential ecological risks of heavy metals in soil of Xiangtan lotus planting area,the contents of Mn,Cu,As,Cd,Pb and Cr in soil and lotus seeds were analyzed in six main lotus planting *** comprehensive potential ecological risks of heavy metals in soil were evaluated by the potential ecological hazard *** results showed that Cd concentration(mean value)was higher than the risk screening value and lower than the risk control value,and other heavy metals were lower or close to the risk screening *** ecological risks of each element from large to small were Cd,Pb,As,Cu,Cr and *** average value of the comprehensive ecological hazard index of the six sites was 224.7,which was a medium level of pollution *** lotus seeds corresponding to each site were also polluted by heavy metals to a certain extent,and Cd and Pb in the seeds exceeded the *** the above analysis,the heavy metals in the soil of the lotus planting area presented a medium ecological *** order to ensure the safety of lotus production,it is necessary to strengthen the soil testing and management in the lotus planting area.

关键词： Xiangtan Lotus heavy metals ecological risk

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Effects of prescribed burning on carbon accumulation in two paired vegetation sites in subtropical China

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Forest Ecosystems 2019年第3期6卷 210-218页

作者： Yuanqi Chen Jianbo Cao Lixia Zhou Feng Li Shenglei Fu Hunan Province key laboratory of Coal Resources Clean-utilization and Mine Environment Protection Hunan University of Science and Technology Xiangtan 411201China key laboratory of ecological remediation and safe utilization of heavy metal-polluted soils College of Hunan ProvinceSchool of Life Science Hunan University of Science and Technology Xiangtan 411201 Hunan China key laboratory of Vegetation Restoration and Management of Degraded Ecosystems South China Botanical GardenChinese Academy of Sciences Guangzhou 510650China University of Chinese Academy of Sciences Beijing 100049China key laboratory of Geospatial Technology for the Middle & Lower Yellow River Regions Ministry of EducationCollege of Environment and Planning Henan University Kaifeng 475004China

Background: Prescribed burning is a common practice of site preparation before afforestation in subtropical forests. However, the effects of prescribed burning on carbon (C) dynamics of an ecosystem are poorly understood. Therefore, a Eucalyptus urophylla plantation (EU) and a naturally recovered shrubland (NS), each treated with prescribed burning and no burning were examined in subtropical China. Methods: Biomass of trees and shrubs in the 1st, 3nd, 4th, and 6th year after treatments were estimated by quadrat survey and allometric equations. Biomass of herbs and forest floors were estimated by harvest method. Plant biomass C storage was calculated by plant biomass multiplying by its C concentration. Soil organic C (SOC) storage in the 6th year after treatments was estimated by SOC concentration multiplying by soil bulk density and soil volumes. Results: Tree biomass C storage was significantly higher in the burned EU (BEU) than in the unburned EU (UEU) in the 1st year after treatments, yet the difference decreased over time. Conversely, tree biomass C storage was lower in the burned NS (BNS) than in the unburned NS (UNS), although the difference was not significant. However, in the 6th year after treatments, the total plant biomass C storage was 14.56% higher in the BEU than that in the UEU, and 59.93% higher in the BNS than that in the UNS, respectively, although the significant difference was only found between UNS and BNS. In addition, neither SOC storage at 0-20 cm nor ecosystem C storage in either the EU or NS was significantly affected by prescribed burning. Conclusions: Prescribed burning has little impact on overall C storage of forest ecosystems, we consider that prescribed burning may be an option for forest site preparation regarding plant biomass C accumulation.

关键词： Prescribed fire Reforestation Plant biomass carbon Soil organic carbon Forest management

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First Report of Alternaria alternata Causing Leaf Spot of Tartary Buckwheat in China

First Report of Alternaria alternata Causing Leaf Spot of Ta...

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中国植物病理学会2021年学术年会

作者： LI Shaoqing SHEN Quan Wang Haihua HE Feng XIAO Zuyin PENG Xixu ZhOU Meiliang TANG Xinke School of Life Science Hunan University of Science and Technology key laboratory of Genetic Improvement and Multiple utilization of Economic Crops in Hunan Province key laboratory of ecological remediation and safe utilization of heavy metal-polluted soils College of Hunan Province Institute of Crop Science Chinese Academy of Agricultural Sciences

Buckwheat(Fagopyrum tataricum) is recognized as a healthy food with abundant nutrients and high levels of *** April and May of 2020,an unknown tartary buckwheat leaf spot distinct from Nigrospora leaf spot was observed in Xiangxiang,Hunan,China(27°49′54″N,112°18′48″E.).Disease incidence was 60%-70% within three fields(totally 7 000 m).The disease occurred after plants *** symptoms began as circular,or ellipsoid,chlorotic,water-soaked spots,mostly on leaf apexes or leaf *** small spots gradually enlarged and often coalesced to form large circular or irregular,pale to light brown lesions,and the infected leaves eventually withered and fell *** 2 mm × 2 mm infected tissue pieces collected from five locations were sterilized in 70% ethanol for 10 s,in 2% NaClO for 30 s,rinsed in sterile water for three times,dried,and placed on PDA with lactic acid(3 mL/L).After 3-5 days at 28 ℃ in the dark,17 fungal isolates were purified using single-spore isolation *** all fungal isolates had similar *** were initially olive green with white margin and later turned dark olive or black with profuse *** were borne in long chains,tawny to brownish green,with 1-3 longitudinal and 1-7 transverse septa,pyriform,and measured 9.5-39.6 μm long,and 5.1-12.6 μm wide(n=50).Based on morphological characteristics,the fungus was identified as Alternaria *** internal transcribed spacer(ITS),glyceraldehyde-3-phosphate dehydrogenase(GAPDH),translation elongation factor 1-α(TEF) and Alternaria major allergen(Alt al) genes of isolate BLS-1 were amplified using ITS1/ITS4,EF1-728 F/EF1-986 R,Gpdl/Gpd2 and Alt-4 for/Alt-4 rev,*** were deposited into GenBank with *** MW453091(ITS),MW480219(GAPDH),MW480218(TEF),and MW480220(Alt al).BLASTn analysis showed 99.8%(ITS,MH854758.1),100%(GAPDH,KP124155.1),99.8%(TEF,KP125073.1) and 100%(Alta1,KP123847.1) identity with reference strain CBS 106.24 of ***

关键词： Tartary buckwheat(Fagopyrum tataricum) leaf Spot Alternaria alternata pathogen identification

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Cadmium accumulation in different pakchoi cultivars and screening for pollution-safe cultivars

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2012年第6期13卷 494-502页

作者： Ying CHEN Ting-qiang LI Xuan HAN Zhe-li DING Xiao-e YANG Ye-fei JIN Ministry of Education key laboratory of Environmental remediation and ecological Health College of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058China College of Life Sciences Shaoxing College o fArts and SciencesShaoxing 312000China

The selection and breeding of pollution-safe cultivars (PSCs) is a practicable and cost-effective approach to minimize the influx of heavy metal to the human food *** this study,both pot-culture and field experiments were conducted to identify and screen out cadmium pollution-safe cultivars (Cd-PSCs) from 50 pakchoi (Brassica rapa ***) cultivars for food *** treated with 1.0 or 2.5 mg/kg Cd,most of the pakchoi cultivars (>70%) showed greater or similar shoot biomass when compared with the *** result indicates that pakchoi has a considerable tolerance to soil Cd *** concentrations in the shoot varied significantly (Psoils (≤1.2 mg/kg) without any risk to food safety.

关键词： Cadmium pollution Food safety Pakchoi Pollution-safe cultivars

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Geochemical signatures and human health risk evaluation of rare earth elements in soils and plants of the northeastern Qinghai-Tibet Plateau,China

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Journal of Arid Land 2022年第11期14卷 1258-1273页

作者： LI Leiming WU Jun LU Jian ZHANG Xiying XU Juan key laboratory of Comprehensive and Highly Efficient utilization of Salt Lake Resources Qinghai Institute of Salt LakesChinese Academy of SciencesXining 810008China Yantai Research Institute Harbin Engineering UniversityYantai 264006China CAS key laboratory of Coastal Environmental Processes and ecological remediation Yantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai 264003China Shandong key laboratory of Coastal Environmental Processes Yantai 264003China Qinghai Provincial key laboratory of Geology and Environment of Salt Lakes Xining 810008China State key laboratory of Marine Geology Tongji UniversityShanghai 200092China

Information on rare earth elements(REEs)in soils and plants of the Qinghai-Tibet Plateau is very ***,in this study,we performed field sampling to explore the geochemical signatures and human health risk of REEs in soils and plants of the northeastern Qinghai-Tibet Plateau,China.A total of 127 soil samples and 127 plant samples were collected from the northeastern Qinghai-Tibet Plateau to acquire the geochemical signatures and related human health risks of *** mean total concentrations of REEs in soils and plants of the study area reached 178.55 and 10.06 mg/kg,*** light REEs in soils and plants accounted for 76%and 77%of the total REEs,*** showed significantly homogenous distribution in soils but inhomogeneous distribution in plants of the study *** parameters indicated that light REEs were enriched and fractionated significantly,while heavy REEs were moderately fractionated in soils and *** in soils and plants showed significantly negative Europium *** showed slightly positive anomaly in plants and slight anomaly in *** normalized distribution patterns of REEs were generally similar in the analyzed soils and the corresponding plants of the study *** average bio-concentration factor of REEs ranged from 0.0478(Scandium)to 0.0604(Europium),confirming a small accumulation of REEs by *** risks caused by REEs in soils and plants were negligible,while risks for adults were lower than those for *** study provides important information on REEs in soils and plants of the northeastern Qinghai-Tibet Plateau.

关键词： rare earth elements geochemical signatures human health risk carcinogenic risk bio-concentration factor Qinghai-Tibet Plateau

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A critical review of the interactions between rhizosphere and biochar during the remediation of metal(loid)contaminated soils

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Biochar 2023年第1期5卷 1481-1513页

作者： Chuanfang Fan Yanshan Cui Qianru Zhang Naiyi Yin Xiaolin Cai Xiangzhou Yuan Sachini Senadheera Yoora Cho Yong Sik Ok College of Resources and Environment University of Chinese Academy of SciencesBeijing 101408China Research Center for Eco-Environment Sciences Chinese Academy of SciencesBeijing 100085China Korea Biochar Research Center APRU Sustainable Waste Management Program&Division of Environmental Science and Ecological EngineeringKorea UniversitySeoul 02841Republic of Korea State key laboratory of Efficient utilization of Arid and Semi-Arid Arable Land in Northern China Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China key laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 210096China

Biochar has a large specific surface area,well-developed pore structure,abundant surface functional groups,and superior nutrient supply capacity,which is widely available and environmentally friendly with its advantages in waste resource utilization,heavy metal(loid)remediation,and carbon *** review focuses on the interactions between biochar(including raw biochar,functional biochar(modified/engineered/designer biochar),and composite biochar)and rhizosphere during the remediation of soil contaminated with heavy metal(loid)s(Pb,As,Cd,Hg,Co,Cu,Ni,Zn,Cr,etc.)and the effects of these interactions on the microbial communities and root exudates(enzymes and low-molecular-weight organic acids(LMWOAs)).In terms of microorganisms,biochar affects the composition,diversity,and structure of microbial communities through the supply of nutrients,provision of microbial colonization sites,immobilization of heavy metal(loid)s,and introduction of exogenous *** regard to root exudates,biochar provides electron transfer support between the microorganisms and exudates,regulates the secretion of enzymes to resist the oxidative stress stimulated by heavy metal(loid)s,ameliorates rhizosphere acidification caused by LMWOAs,and promotes the activity of soil *** roles and mechanisms of biochar on rhizosphere soils are discussed,as well as the challenges of biochar in the remediation of heavy metal(loid)-contaminated soils,and the issues that need to be addressed in future research are foreseen.

关键词： Green and sustainable remediation Sustainability Biochar Soil Root heavy metal(loid)s

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Pollution and health risk assessment of heavy metals in soils of Guizhou,China

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Ecosystem Health and Sustainability 2021年第1期7卷 6-17页

作者： Gao Yu Fen Chen Hongli Zhang Zuhua Wang College of Agroforestry Engineering and Planning Tongren UniversityTongrenPeople’s Republic of China key laboratory of Original Agro-Environmental Pollution Prevention and Control Ministry of Agriculture and Rural Affairs/Tianjin Key Laboratory of Agro-environment and Safe-productTianjinPeople’s Republic of China Remote Sensing Monitoring Department Geo-Compass Information Technology CompanyLTDBeijingPeople’s Republic of China

Mining of minerals in Guizhou,China,where it is enriched with reserves,may lead to soil contamination with heavy *** assessed the risk of eight typical heavy metals in Guizhou soils by collecting province-wide data available in the literature and using the geo-accumulation index method,the ecological risk assessment method,and the USEPA health risk assessment *** concentrations of eight heavy metals,except for Pb and Cr,were above the background *** heavy metal pollution evaluation results showed that As,Cu,Zn,Pb,Cr,Cd,and Ni reached the pollution levels,while Hg fell into the category of moderate ***,Cu,Zn,Pb,Cr,and Ni posed low potential ecological risk,while Cd and Hg demonstrated a considerable or a very high potential ecological ***,the integrated potential ecological risk was ranked“very high”.Regarding to health risk,the non-carcinogenic risks caused by heavy metals were insignificant,but the carcinogenic risk caused by As was ***,there appeared serious soil contamination of Hg and As,with the latter also being the greatest potential risk to human *** Hg and As should stay at the highest priory for remediation efforts in Guizhou soils.

关键词： heavy metals geo-accumulation index potential ecological risk human health risk

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