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A comprehensive analysis of the response of the fungal community structure to long-term continuous cropping in three typical upland crops

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Journal of Integrative Agriculture 2020年第3期19卷 866-880页

作者： LIU Hang PAN Feng-juan HAN Xiao-zeng SONG Feng-bin ZHANG Zhi-ming YAN Jun XU Yan-li National Observation Station of Hailun Agro-ecology System/Key Laboratory of Mollisols Agroecology Northeast Institute of Geography and AgroecologyChinese Academy of SciencesHarbin 150081P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China

Certain agricultural management practices are known to affect the soil microbial community structure;however,knowledge of the response of the fungal community structure to the long-term continuous cropping and rotation of soybean,maize and wheat in the same agroecosystem is *** assessed the fungal abundance,composition and diversity among soybean rotation,maize rotation and wheat rotation systems and among long-term continuous cropping systems of soybean,maize and wheat as the effect of crop types on fungal community *** compared these fungal parameters of same crop between long-term crop rotation and continuous cropping systems as the effect of cropping systems on fungal community *** fungal abundance and composition were measured by quantitative real-time PCR and Illumina MiSeq *** results revealed that long-term continuous soybean cropping increased the soil fungal abundance compared with soybean rotation,and the fungal abundance was decreased in long-term continuous maize cropping compared with maize *** long-term continuous soybean cropping also exhibited increased soil fungal *** variation in the fungal community structure among the three crops was greater than that between long-term continuous cropping and rotation ***,Guehomyces and Alternaria were the most important contributors to the dissimilarity of the fungal communities between the continuous cropping and rotation cropping of soybean,maize and *** were 11 potential pathogen and 11 potential biocontrol fungi identified,and the relative abundance of most of the potential pathogenic fungi increased during the long-term continuous cropping of all three *** relative abundance of most biocontrol fungi increased in long-term continuous soybean cropping but decreased in long-term continuous maize and wheat *** results indicate that the response of the soil fungal community structure to long-term continuous cropping

关键词： continuous cropping crop rotation fungal community structure Illumina MiSeq sequencing

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Variation and Dynamics of Soil Nematode Communities in Greenhouses with Different continuous cropping Periods

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Horticultural Plant Journal 2020年第5期6卷 301-312页

作者： Xueliang Tian Xiaoman Zhao Zhenchuan Mao Bingyan Xie College of Resources and Environment Henan Institute of Science and TechnologyXinxiangHenan 453003China Institute of Vegetable and Flowers Chinese Academy of Agricultural SciencesBeijing 100081China

continuous cropping in greenhouses can result in root-knot nematode outbreaks resulting from imbalances in the soil nematode ***,the changes in soil nematode communities in greenhouses with continuous crop production are *** compared soil nematode communities in greenhouses after 2 years(2-yr)and 10 years(10-yr)of continuous crop production by 18S rDNA high-throughput *** with the 2-yr greenhouse,soil in the 10-yr greenhouse showed acidification,nutrient accumulation and ***-feeding nematodes(BF)were dominant in the 2-yr greenhouse over the whole growing season,but plant-parasitic nematodes(PP)were the dominant group in the 10-yr greenhouse during the late growing *** gradually became the dominant group and had a relative abundance of 70.9%(maximum)in the 10-yr ***,with relative abundance ranging from 99.8%to 26.8%,was the predominant group in the 2-year ***β-diversity,hierarchical clustering analysis,unweighted UniFrac principal component analysis(PCA)and principal co-ordinates analysis(PCoA)all revealed that soil nematode communities in the two types of greenhouses were significantly *** analysis(RDA)showed that soil nematode communities in the 10-yr greenhouse were related to high soil organic material,total nitrogen,electrical conductivity and disease index of root-knot ***’s exact test and Pearson’s correlation coefficients revealed that Meloidogyne contributed to themain differences in soil nematode communities between the two types of *** dynamics of Meloidogyne were divided into dormant phase,low-level increasing phase and exponential phase during the whole *** soil nematode communities within the 2-yr and 10-yr greenhouses had significant variation and different *** work contributes to a deeper understanding of changes in the soil nematode community in greenhouses with different continuous cro

关键词： meloidogyne greenhouse soil nematode community continuous cropping high-throughput sequencing

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Influence of Panax ginseng continuous cropping on Metabolic Function of Soil Microbial Communities

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Chinese Herbal Medicines 2012年第4期4卷 329-334页

作者： YING Yi-xin1,DING Wan-long1,ZHOU Ying-qun2,LI Yong1 1.Institute of Medicinal Plant Development,Chinese Academy of Medical Sciences and Peking Union Medical College,Beijing 100193,China 2.China National Corporation of Traditional and Herbal Medicine,Beijing 100195,China Institute of Medicinal Plant Development Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100193 China China National Corporation of Traditional and Herbal Medicine Beijing 100195 China

Objective To investigate the influence of Panax ginseng continuous cropping on the carbon substrate metabolic activity of microbes in soils sampled from Dafang,Huangni,and Wulidi in Jilin Province,*** Soil metabolisms of soil communities were characterized by community level physiological profiles using BIOLOGTM *** Soils sampled from the three sites were analyzed and their metabolic activities were *** component analysis explored the significant variance in metabolic function of microbial communities in soils,though the Shannon index and the evenness index of them were ***,two principal components(PC1 and PC2),which contributed 67.83% and 10.78% of total variance,were extracted *** also,substrates significantly correlated with PC1 and PC2 at the three sampling sites were *** Characteristic of soil is the primary factor influencing microbial communities,and *** continuous cropping has significant influence on microbial *** soil samples show similar microbial metabolic profiles,microbial communities in rhizosphere soil are changed obviously during the cultivation of ***,which would finally result in the unbalance of microbial *** would gradually be the predominants in rhizosphere soil and make *** sick.

关键词： continuous cropping metabolic function microbial community Panax ginseng rhizosphere soil

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Effects and Mechanisms of Oil Cakes on the Growth of Cucumber (Cucumis sativus L.) Under continuous cropping System

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Agricultural Sciences in China 2003年第10期2卷 1137-1143页

作者： RUANWei-bin LIUMo-han PANJie WangJing LUWen-long MACheng-cang WANGJing-guo SHENYue GAOYu-bao CollegeofLifeSciences NankaiUniversityTianjin300071P.R.China TianjinAcademyofAgriculturalSciences Tianjin300192P.R.China DepartmentofPlantNutrition ChinaAgriculturalUniversityBeijing100094P.R.China Agro-EnvironmentalProtectionInstituteofMinistryofAgriculture Tianjin300191P.R.China

Fxperiments on the effect of soil amendment with rape (Brassica chinensis L.) seed cake, cotton (Gossypium hirsutum L.) seed or sesame (Sesamum indicum L.) seed cake on the growth of cucumber seedlings under a continuous cropping system were conducted in a greenhouse environment. The results indicated that two applications of sesame seed cake (0.1 and 0.5 %, w/w) increased the growth of cucumber, but the rape oil cake showed a negative effect at a rate of 1.5% (w/w). The sesame seed cake was separated into four fractions (Ⅰ, Ⅱ, Ⅲ and Ⅳ) according to the polarity, and all four fractions had a positive effect on the growth of cucumbers under a continuous cropping system. Fraction number Ⅲ was isolated into 25 proportions by silicon column, and only oleic acid, palmitic acid and octadecanoic acid were identified in proportion 10 by GC-MS in which 93.3% was oleic acid and palmitic acid. The oleic acid had a significant and positive effect on cucumber growth under salt stress at the level 30 mmol and showed slight resistance to several pathogenic fungi.

关键词： Cucumber Oleic acid continuous cropping Salt stress Fertilization Oil cake

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Effects of Se on Reducing Membrane Lipid Peroxidation of Soybean under continuous cropping Stress

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Journal of Northeast Agricultural University(English Edition) 2002年第1期9卷 1-8页

作者： LIUYuang－ying SUNLei 等 FacultyofResourcesandEnvironment NortheastAgriculturalUniversityHarbinHeilongjiang150030PRC PhDstudentinNanjingsoilresearchinstitute

Reports the effects of selenium on lipid peroxidation of soybean under continuous cropping *** of pot culture and plot experiment showed that appropriate amount of Se addition increased the activity of glutathione peroxidase (GSH-Px) significantly,and cleared away the excessive free radicals existing in soybean plant under continuous cropping stress,decreased the concentration of malonaldehyde(MDA),which is the end product of lipid peroxidation,maintained the perfection of chloroplast and mitochondrion structure,enhanced the resistance of continuous cropped soybean,and therefore increased the dry weight of seedlong and yield.

关键词： lipid peroxidation continuous cropping selenium soybean

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Effects of continuous cropping of Panax notoginseng on the Properties of Rhizosphere Soil

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Agricultural Science & Technology 2017年第4期18卷 602-606页

作者： Kaiming LI Meixiang LIU Qianhui SUN Zilong ZHANG School of Life Science Beijing University of Chinese Medicine Beijing 100102 China School of Chinese Materia Medica Beijing University of Chinese Medicine Beijing 100102 China School of Basic Medical Science Beijing University of Chinese Medicine Beijing 100102 China

[Objective] This experiment aimed to investigate the effects of continuous cropping of Panax notoginseng on the properties of rhizosphere soil. [Method] A total of 12 rhizospheres oil samples were collected in the fields continuously cropped with P. notoginseng for different years and the soil properties including pH value, contents of available N, available K, available P,total N, total K, total P and organic matter were determined. [Result] With the increase in the number of years of continuous cropping, seven soli indices: soil pH value, organic matter content, total N, total P, total K, available P and available K gradually increased, while available N showed a gradual downward trend. The contents of organic matter content, total N, total P, total K,available P, available K and available N after three years of continuous cropping were increased by 74.93%, 65.85%, 123.82%,18.78%, 341.67%, 120.16% and-32.16%, respectively, indicating that continuous cropping of P. notoginseng resulted in nutrient enrichment in rhizosphere soils. The pH value and available N in IBC(soil inside the border check) and UBC(soil under the border check) were higher than that in BBC(soil beside the border check), suggesting that the soil was gradually alkalized due to the continuous cropping of P. notoginseng. [Conclusion] These results suggest that pH change and nutrient imbalance may be the obstacles to the continuous cropping of P. notoginseng.

关键词： continuous cropping Correlation Nutrient enrichment Panax notoginseng Soil properties

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Changes in Soil Enzyme Activity and Nutrient Content in Different Years of continuous cropping Tobacco Fields

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Asian Agricultural Research 2017年第5期9卷 100-104页

作者： Jifeng CHEN Hui SUN Yang XIA Kaixuan CAI Hongyuan LIU Yuanyuan LI Ruiliang GUO Bei HOU Shuai FENG Xiaoxin JIANG School of Life Science Zhengzhou University Ye County Branch of Pingdingshan Tobacco Company Henan Tobacco Company Zhengzhou Huantong Biotechnology Co. Ltd

In order to find out changes in the main fertility indicators of continuous cropping tobacco fields in Henan Province with years of continuous cropping,5 typical tobacco fields( Jia County,Shaoling District,Fangcheng County,Xiangcheng County,and Song County) were studied. Indicators in question included activity of main enzymes( sucrase,urease,catalase,and acid phosphatase),p H value,organic matters,total nitrogen,available phosphorus and available potassium. The results indicate that in most tobacco fields,the activity of sucrase and urease increased in two years of continuous cropping,later,it showed a declining trend with increase in years of continuous cropping; in some fields,it directly declined with increase in years of continuous cropping; the activity of catalase increased in two years of continuous cropping,later,it showed a declining trend with increase in years of continuous cropping,and it became stable after three years of continuous cropping;generally,the activity of acid phosphatase declined with increase in the years of continuous cropping within 3 years continuous cropping,later,it became stable. Except Fangcheng County,the soil p H value of other districts( counties) generally declined with increase in years of continuous cropping,and it was in the range of 5. 6-6. 8. With the increase in continuous cropping,the soil organic matters( SOM) in tobacco fields of Jia County and Song County declined,changes of SOM in tobacco fields of Fangcheng County and Xiangcheng County were not obvious,and SOM showed the trend of first decline then rise in Shaoling District. In most tobacco fields( Jia County,Xiangcheng County,and Song County),the total nitrogen showed a declining trend; in Shaoling District,it showed a trend of first decline then rise; in Fangcheng County,it showed a rising trend. The available phosphorus firstly slightly declined then rose in tobacco fields of Shaoling District and Song County; it showed a trend of first rise then decline in Jia

关键词： Flue-cured tobacco continuous cropping Soil Enzyme activity p H Organic matters Mineral elements Henan Province

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Soil Fungal Diversity and Community Composition in Response to continuous Sweet Potato cropping Practices

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Phyton-International Journal of Experimental Botany 2021年第4期90卷 1247-1258页

作者： Dan Xiang Yue Wu Huan Li Qing Liu Zhenfeng Zhou Qinghua Chen Nan Zhang Liang Xu Key Laboratory of Degraded and Unused Land Consolidation Engineering Ministry of Natural ResourcesXi’an710075China College of Resources and Environment Qingdao Agricultural UniversityQingdao266109China College of Resources and Environment Baoshan UniversityBaoshan678000China

Soil fungi are extremely important for maintaining soil health and plant production in agricultural ***,the effect of continuous cropping of sweet potato on soil fungal communities and physiochemical parameters has not been well *** the present study,four sweet potato fields consecutively monocultured for 1,2,3,and 4 years were selected to investigate the effect of monoculture on soil fungal communities through Illumina MiSeq *** cropping of sweet potatoes dramatically altered the fungal community composition,whereas fungal diversity was almost *** and Basidiomycota were the most abundant phyla in all soil samples,accounting for 32.59%and 21.14%of the average relative abundance,*** abundance of some potential pathogens,such as Ascobolus spp,specifically Ascobolus stercorarius,and some unknown fungi increased significantly as the sweet potato monoculture period increased,and their presence were highly positively correlated with disease *** contrast,Basidiomycota,Bullera,Fusarium and Trichocladium most likely play roles as antagonists of sweet potato disease development,as their relative abundance decreased significantly over time and were negatively correlated with disease *** and correlation analyses revealed that soil pH and organic carbon content were the most important factors driving these *** findings provided a dynamic overview of the fungal community and presented a clear scope for screening beneficial fungi and pathogens of sweet potato.

关键词： Soil fungal community internal transcribed spacers continuous cropping Illumina Miseq sequencing soil pH

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Visualizing the spatial distribution and alteration of metabolites in continuously cropped Salvia miltiorrhiza Bge using MALDI-MSI

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Journal of Pharmaceutical Analysis 2022年第5期12卷 719-724页

作者： Chenglong Sun Li Cui Bingqian Zhou Xiao Wang Lanping Guo Wei Liu School of Pharmaceutical Sciences Qilu University of Technology(Shandong Academy of Sciences)Jinan250014China Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province Shandong Analysis and Test CenterQilu University of Technology(Shandong Academy of Sciences)Jinan250014China Resource Center of Chinese Materia Medica State Key Laboratory Breeding Base of Dao-di HerbsChina Academy of Chinese Medical SciencesBeijing100700China

Salvia miltiorrhiza Bge(SMB)has long been used in traditional Chinese medicine to treat cardiovascular and cerebrovascular *** clinical usage has led to a huge demand for artificial planting of ***,continuous cropping of SMB is an important challenge that needs to be *** cropping can alter the metabolic profile of plants,resulting in poor growth and low *** this study,we tried to image the spatial location and variation of endogenous metabolites in continuously cropped SMB using matrix-assisted laser desorption/ionization mass spectrometry imaging(MALDIMSI).Spatially resolved expressions of tanshinones,salvianolic acids,polyamines,phenolic acids,amino acids,and oligosaccharides in normal and continuously cropped SMB roots were *** expressions of dihydrotanshinone Ⅰ,tanshinone Ⅱ A,dehydromiltirone,miltirone,dehydrotanshinone ⅡA,spermine,salvianolic acid B/E,tetrasaccharide,and pentasaccharide in continuously cropped SMB roots were much lower than those in normal *** was little difference in the expressions of caffeic acid and salvianolic acid A in normal and continuously cropped SMB *** acid was more widely distributed in xylem of normal SMB but strongly expressed in xylem,phloem,and cambium of continuously cropped *** spatially resolved metabolite information enhances our understanding of the metabolic signature of continuously cropped SMB and also provides insights into the metabolic effects of continuous cropping in other plants.

关键词： Metabolites Spatial distribution and alteration continuous cropping Salvia miltiorrhiza Bge MALDI-MSI

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Impact of monoculture of poplar on rhizosphere microbial communities over time

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Pedosphere 2020年第4期30卷 487-495页

作者： Qian LU Jinchi ZHANG Lisha CHEN Department of Water and Soil Conservation College of ForestryNanjing Forestry UniversityNanjing 210037China

To date, research on the adverse effects of continuous cropping has focused on field crops;forest plantations, despite their very significant economic and ecological value, have received less attention. The evolution of microbial community in the rhizosphere of forest plantations, in particular, has rarely been examined. In this study, changes in the size, composition, and structure of bacterial and fungal communities in the rhizosphere of different generations of poplar (Populus deltoides) plantations were studied using real-time polymerase chain reaction (PCR) and PCR-denaturing gradient gel electrophoresis and compared with the composition of the microbial community in a bare land (control) adjacent to the plantation sites through sequencing analysis and by constructing phylogenetic trees. The numbers of bacteria and fungi increased significantly with successive poplar generations, although the increases in the two groups were not parallel. When compared with the control, the bacterial community increased greatly in the second generation, and the most significant increase occurred in the third generation. In contrast, the most significant increase in the fungal community occurred in the first generation, and the increase in the third generation was insignificant. In terms of community composition, the first generation showed little change in either community;however, the second generation showed remarkable changes in the bacterial community, and the third in the fungal community. The numbers of Gammaproteobacteria,Alphaproteobacteria, and Actinobacteria increased by 10.92%, 7.38%, and 5.46%, respectively, whereas those of Acidobacteria decreased by 18.38%in the second generation. These changes in the number and composition of microbial communities in the rhizosphere could be one of the reasons for the decline in yield and quality associated with long-term monoculture.

关键词： bacterial community continuous cropping denaturing gradient gel electrophoresis forest plantations fungal community polymerase chain reaction Populus deltoides

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