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Liu C, Wang Y, Jin L, Wang Y, Liu D. Morphological, molecular, and biological characterization of bulb rot pathogens in stored Lanzhou lily and the in vitro antifungal efficacy of three plant essential oils. Front Microbiol 2024; 15:1307966. [PMID: 38666262 PMCID: PMC11043472 DOI: 10.3389/fmicb.2024.1307966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 03/25/2024] [Indexed: 04/28/2024] Open
Abstract
Lanzhou lily (Lilium davidii var. willmottiae) is an exclusive sweet lily variety indigenous to China, which is susceptible to bulbous rot caused by fungal infection during storage. This experiment tests the pathogenicity of the pure culture isolated from the diseased tissue was confirmed in accordance with Koch's postulates, and the pathomycetes were identified based on their morphological and molecular characteristics. Furthermore, the biological characteristics of the pathogens were investigated, followed by an evaluation of the antifungal effects of three plant essential oils against them. The results showed that two strains of fungi were isolated from Lanzhou lily rot, which were identified as Fusarium oxysporum Schl. and Aspergillus sydowii (Bain. Et sart.). In addition, the pathogenicity of these two strains of fungi was demonstrated that only F. oxysporum induced rot with similar symptoms during the post-harvest storage period. The biological characteristics of F. oxysporum indicated the potato maltose agar and lily dextrose agar were identified as the most suitable media. Sucrose was determined to be the optimal carbon source, while ammonium nitrate was found to be the best nitrogen source for the growth of F. oxysporum. Mycelial growth and sporulation of F. oxysporum occurred at an optimum pH value of 6. Total darkness facilitated mycelial growth and conidial germination. The ideal temperature for growth was found to be 28°C, while relative humidity did not significantly impact mycelial growth; however, a relative humidity of 55% was most favorable for spore production. Among the three essential oils tested, cinnamon essential oil displayed superior antifungal efficacy against F. oxysporum, whereas angelica essential oil and tea tree essential oil also exhibited moderate inhibitory effects against this pathogen. This research provides valuable theoretical insights for disease control during the storage and transportation of Lanzhou lily.
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Affiliation(s)
- Chaoqun Liu
- College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, China
| | - Yinquan Wang
- College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, China
- Northwest Collaborative Innovation Center for Traditional Chinese Medicine Co-Constructed by Gansu Province and MOE of PRC, Lanzhou, China
| | - Ling Jin
- College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, China
- Northwest Collaborative Innovation Center for Traditional Chinese Medicine Co-Constructed by Gansu Province and MOE of PRC, Lanzhou, China
| | - Yan Wang
- College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, China
| | - Dongling Liu
- College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, China
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Yang W, Wang P, Zhang W, Xu M, Yan L, Yan Z, Du W, Ouyang L, Liu B, Wu Z, Zhang Z, Zhao S, Li X, Wang L. Review on preservation techniques of edible lily bulbs in China. CYTA - JOURNAL OF FOOD 2022. [DOI: 10.1080/19476337.2022.2107708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Wenzhe Yang
- Tianjin key Laboratory of Refrigeration Technology, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, P.R. China
| | - Peng Wang
- Tianjin key Laboratory of Refrigeration Technology, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, P.R. China
| | - Wen Zhang
- Tianjin key Laboratory of Refrigeration Technology, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, P.R. China
| | - Mengda Xu
- Tianjin key Laboratory of Refrigeration Technology, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, P.R. China
| | - Lihong Yan
- Tianjin key Laboratory of Refrigeration Technology, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, P.R. China
| | - Ziyi Yan
- Tianjin key Laboratory of Refrigeration Technology, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, P.R. China
| | - Wanhua Du
- Tianjin key Laboratory of Refrigeration Technology, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, P.R. China
| | - Lu Ouyang
- Tianjin key Laboratory of Refrigeration Technology, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, P.R. China
| | - Bin Liu
- Tianjin key Laboratory of Refrigeration Technology, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, P.R. China
| | - Zijian Wu
- Tianjin key Laboratory of Refrigeration Technology, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, P.R. China
| | - Zhe Zhang
- Tianjin key Laboratory of Refrigeration Technology, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, P.R. China
| | - Songsong Zhao
- Tianjin key Laboratory of Refrigeration Technology, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, P.R. China
| | - Xingbo Li
- Tianjin key Laboratory of Refrigeration Technology, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, P.R. China
| | - Lei Wang
- School of Construction and Environmental Engineering, Shenzhen Polytechnic, Shenzhen, P.R. China
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Wang Y, Wang R, Sha Y. Distribution, pathogenicity and disease control of Fusarium tricinctum. Front Microbiol 2022; 13:939927. [PMID: 35958126 PMCID: PMC9360978 DOI: 10.3389/fmicb.2022.939927] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 07/07/2022] [Indexed: 11/25/2022] Open
Abstract
Plant pathogenic fungi such as Fusarium tricinctum cause various plant diseases worldwide, especially in temperate regions. In cereals, F. tricinctum is one of the most common species causing Fusarium head blight (FHB) and root rot. Infection with F. tricinctum results in high yield losses and reduction in quality, mainly due to mycotoxin contamination of grain. Mycotoxins produced by F. tricinctum, such as enniatins (ENs) and moniliformin (MON), which are the most studied mycotoxins, have been reported to have multiple toxic effects on humans and animals. Although chemical control of Fusarium infection has been applied to grains, it is not always effective in controlling disease or reducing the level of mycotoxins in wheat grains. To the contrary, chemical control may significantly increase infection of F. tricinctum in fungicide-treated plots after treatment. Our studies show that the bacterium Bacillus amyloliquefaciens, has good control effects against F. tricinctum. Therefore, its use as a biological control agent against various plant pathogens may be an effective strategy to control the spread of Fusarium pathogens. Here, we conduct a review of the literature involving this plant pathogen, its diversity, virulence, and methods to control.
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Affiliation(s)
- Yun Wang
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, China
| | - Ruoyu Wang
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Lanzhou, China
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China
- *Correspondence: Ruoyu Wang,
| | - Yuexia Sha
- Institute of Plant Protection, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan, China
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Liu Y, Tian Y, Zhao X, Yue L, Uwaremwe C, Zhou Q, Wang Y, Zhang Y, Dun Z, Cui Z, Wang R. Identification of Pathogenic Fusarium spp. Responsible for Root Rot of Angelica sinensis and Characterization of Their Biological Enemies in Dingxi, China. PLANT DISEASE 2022; 106:1898-1910. [PMID: 35021867 DOI: 10.1094/pdis-06-21-1249-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Root rot is a serious disease in plantations of Angelica sinensis, severely reducing yield and quality and threatening sustainable production. Fusarium isolates (n = 32) were obtained from field samples of root rot tissue, leaves, and infected soil. Isolates were identified by comparison of the sequences of their internal transcribed spacer region and translation elongation factor 1-α to sequences of known species in the National Center for Biotechnology Information database. These Fusarium isolates include Fusarium tricinctum (43.75%), F. equiseti (31.25%), F. solani (9.37%), F. oxysporum (6.25%), F. acuminatum (6.25%), and F. incarnatum (3.12%). For pathogenicity testing under greenhouse conditions, seven isolates were selected based on a phylogenetic analysis, including four strains of F. tricinctum and one strain each of F. solani, F. oxysporum, and F. acuminatum. The seven isolates were all pathogenic but differed in their ability to infect: The four F. tricinctum strains were capable of causing root rot in A. sinensis at 100% incidence and were highly aggressive. Furthermore, the symptoms of root rot induced by those seven isolates were consistent with typical root rot cases in the field, but their disease severity varied. Observed histopathological preparations of F. tricinctum-infected seedlings and tissue slide results showed that this fungal species can penetrate epidermal cells and colonize the cortical cells where it induces necrosis and severe plasmolysis. Plate confrontation experiments showed that isolated rhizosphere bacteria inhibited the Fusarium pathogens that cause root rot in A. sinensis. Our results provide timely information about the use of biocontrol agents for suppression of root rot disease.
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Affiliation(s)
- Yang Liu
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuan Tian
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xia Zhao
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Liang Yue
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Constantine Uwaremwe
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qin Zhou
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yun Wang
- University of Chinese Academy of Sciences, Beijing 100049, China
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Yubao Zhang
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhiheng Dun
- The General Station of Construction and Protection for the Cultivated Land and Quality of Gansu Province, Lanzhou 730000, China
| | - Zengtuan Cui
- The General Station of Construction and Protection for the Cultivated Land and Quality of Gansu Province, Lanzhou 730000, China
| | - Ruoyu Wang
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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Zhao X, Liang Y, Constantine U, Yang L, Yuan T, Zhao H, Zhou Q, Zhang Y, Wang R. First Report of Root Rot Caused by the Fusarium oxysporum Species Complex on Codonopsis pilosula in China. PLANT DISEASE 2021; 105:3742. [PMID: 34077248 DOI: 10.1094/pdis-02-21-0418-pdn] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Codonopsis pilosula Franch., also known as Dangshen, is an important medicinal plant in China. It is widely cultivated for a major income of local farmers in Dingxi, Gansu Province. Its dried roots have the effects of supplementing vital energy, nourishing spleen and lung, enhancing organic immunity, helping depressurization, and improving microcirculation, etc., for humans. In June to October, 2018-2020, root rot disease was observed on C. pilosula with incidences up to 20% in the Dingxi region. We collected ten diseased and healthy plants from Dingxi (35°06'N, 104°29'E, 2206 m a.s.l.) in October 2019. The rotting root tissues were sterilized with 70% ethanol for 30 s and 3% NaOCl for 5 min and placed on potato dextrose agar (PDA) plates incubated at 25℃to isolate the pathogen (Shang et al. 2014). From the similar fungal cultures isolated after 7 days on PGA, isolate B17 was purified for morphological and molecular characterization. Its colony appeared light purple and produced long aerial hyphae. Slightly curved macroconidia (12.3 to 31.7 × 3.1 to 5.1 μm, n=40) and oval-ellipsoid and cylindrical microconidia (6.1 to 9.9 × 2.8 to 4.5 μm, n=30) were observed. The internal transcribed spacer region (ITS) and the translation elongation factor-1 alpha (TEF-1α) gene were amplified using primers ITS1/ITS4 and EF-1/EF-2 (Uwaremwe et al. 2020), respectively. The 489 bp (ITS) and 631 bp (TEF-1α) sequences were deposited in GenBank (Accession No. MN744360 and MN786974, respectively). The ITS sequence had 100% homology to isolate JJF2 (No. MN626452, ITS) (Ma et al. 2020), and the TEF-1α sequence had 100% homology to isolate Fo353 (No. KM065860) (Koyyappurath et al. 2016) of Fusarium oxysporum Schlecht. emend. Snyder & Hansen, which caused root rot of Panax ginseng and Vanilla planifolia, respectively. A phylogenetic tree was generated using the unweighted pair-group method with arithmetic average in the MycoBank database (O'Donnell et al. 2015), which clustered isolate B17 in the F. oxysporum species complex. Twenty 1-year-old plants of C. pilosula were inoculated with were inoculated by dipping the washed roots in a conidial suspension (2 ×106 conidia/ml added with 0.2% Tween 20) for 20 min before transplanted into pots (16 × 16 × 23 cm) with four plants per pot filled with sterilized peat and soil mixture (2:1 v/v) and grown in a greenhouse at 26oC with >70% humidity and 16 h light. Sterilized water added with 0.2% Tween 20 was used as a control. One week after inoculation, the leaves of pathogen-inoculated plants became yellow, and wilting occurred at the leaf tips 18 days later. Some of the inoculated plants died 45 days after inoculation, and the low part of roots had dark brown to black lesions and became rotting. The control plants did not show symptoms. The pathogenicity test was repeated three times with the same fungus isolated from the infected root tissue. To the best of our knowledge, this is the first report that F. oxysporum causes root rot on C. pilosula in China. F. oxysporum is a serious threat to C. pilosula cultivation, and the finding of this pathogen provides a clear target for root rot control.
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Affiliation(s)
- Xia Zhao
- Northwest Institute of Eco-Environment and Resources, 34737, Chinese Academy of Science, Lanzhou, Gansu, China;
| | - Yue Liang
- Northwest Institute of Eco-Environment and Resources, 34737, Chinese Academy of Science, Lanzhou, Gansu, China;
| | - Uwaremwe Constantine
- Northwest Institute of Eco-Environment and Resources, 34737, Chinese Academy of Science, Lanzhou, Gansu, China;
| | - Liu Yang
- Northwest Institute of Eco-Environment and Resources, 34737, Chinese Academy of Science, Lanzhou, Gansu, China;
| | - Tian Yuan
- Northwest Institute of Eco-Environment and Resources, 34737, Chinese Academy of Science, Lanzhou, Gansu, China;
| | - Haijun Zhao
- Forestry Technical Service Center of Weiyuan County, Dingxi, China;
| | - Qin Zhou
- Northwest Institute of Eco-Environment and Resources, 34737, Chinese Academy of Science, Lanzhou, Gansu, China;
| | - Yubao Zhang
- Cold and Arid Regions Environmental and Engineering Research Institute, Chinese academy of Sciences, Ecology and Agriculture, DongGang west road 320#, Lanzhou city, Gansu Province, China, Lanzhou, Gansu, China, 730000;
| | - Ruoyu Wang
- Northwest Institute of Eco-Environment and Resources, 34737, Chinese Academy of Science, Lanzhou, Gansu, China;
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Qi X, Wang K, Yang L, Deng Z, Sun Z. The complete mitogenome sequence of the coral lily ( Lilium pumilum) and the Lanzhou lily ( Lilium davidii) in China. Open Life Sci 2021; 15:1060-1067. [PMID: 33817292 PMCID: PMC7874665 DOI: 10.1515/biol-2020-0102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 07/18/2020] [Accepted: 09/14/2020] [Indexed: 11/24/2022] Open
Abstract
Background The mitogenomes of higher plants are conserved. This study was performed to complete the mitogenome of two China Lilium species (Lilium pumilum Redouté and Lilium davidii var. unicolor (Hoog) cotton). Methods Genomic DNA was separately extracted from the leaves of L. pumilum and L. davidii in triplicate and used for sequencing. The mitogenome of Allium cepa was used as a reference. Genome assembly, annotation and phylogenetic tree were analyzed. Results The mitogenome of L. pumilum and L. davidii was 988,986 bp and 924,401 bp in length, respectively. There were 22 core protein-coding genes (including atp1, atp4, atp6, atp9, ccmB, ccmC, ccmFc, ccmFN1, ccmFN2, cob, cox3, matR, mttB, nad1, nad2, nad3, nad4, nad4L, nad5, nad6, nad7 and nad9), one open reading frame and one ribosomal protein-coding gene (rps12) in the mitogenomes. Compared with the A. cepa mitogenome, the coding sequence of the 24 genes and intergenic spacers in L. pumilum and L. davidii mitogenome contained 1,621 and 1,617 variable sites, respectively. In the phylogenetic tree, L. pumilum and L. davidii were distinct from A. cepa (NC_030100). Conclusions L. pumilum and L. davidii mitogenomes have far distances from other plants. This study provided additional information on the species resources of China Lilium.
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Affiliation(s)
- Xiangying Qi
- China Lily Laboratory, Shaanxi Engineering and Technological Research Center for Conversation and Utilization of Regional Biological Resources, Yan'an University, Yan'an, 716000, Shaanxi, China
| | - Kaiqi Wang
- China Lily Laboratory, Shaanxi Engineering and Technological Research Center for Conversation and Utilization of Regional Biological Resources, Yan'an University, Yan'an, 716000, Shaanxi, China
| | - Liping Yang
- School of Advanced Agriculture and Bioengineering, Yangtze Normal University, Chongqing, 408100, China
| | - Zhenshan Deng
- China Lily Laboratory, Shaanxi Engineering and Technological Research Center for Conversation and Utilization of Regional Biological Resources, Yan'an University, Yan'an, 716000, Shaanxi, China
| | - Zhihong Sun
- China Lily Laboratory, Shaanxi Engineering and Technological Research Center for Conversation and Utilization of Regional Biological Resources, Yan'an University, Yan'an, 716000, Shaanxi, China
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Qi X, Wang K, Yang L, Deng Z, Sun Z. The complete chloroplast genome of Lilium davidii var. unicolor (Hoog) cotton (Liliaceae). Mitochondrial DNA B Resour 2020. [DOI: 10.1080/23802359.2020.1735281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Affiliation(s)
- Xiangying Qi
- Shaanxi Engineering and Technological Research Center for Conversation and Utilization of Regional Biological Resources, Yan’an University, Yan’an, PR China
| | - Kaiqi Wang
- Shaanxi Engineering and Technological Research Center for Conversation and Utilization of Regional Biological Resources, Yan’an University, Yan’an, PR China
| | - Liping Yang
- School of Advanced Agriculture and Bioengineering, Yangtze Normal University, Chongqing, PR China
| | - Zhenshan Deng
- Shaanxi Engineering and Technological Research Center for Conversation and Utilization of Regional Biological Resources, Yan’an University, Yan’an, PR China
| | - Zhihong Sun
- Shaanxi Engineering and Technological Research Center for Conversation and Utilization of Regional Biological Resources, Yan’an University, Yan’an, PR China
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Zhou L, Wang Y, Xie Z, Zhang Y, Malhi SS, Guo Z, Qiu Y, Wang L. Effects of lily/maize intercropping on rhizosphere microbial community and yield of Lilium davidii var. unicolor. J Basic Microbiol 2018; 58:892-901. [PMID: 30101457 DOI: 10.1002/jobm.201800163] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 07/02/2018] [Accepted: 07/25/2018] [Indexed: 11/07/2022]
Abstract
Continuous cropping of lily (Lilium davidii var. unicolor) or any other crop seriously affects yield and quality. In this study, we compared continuous cropping with lily/maize intercropping. We also examined the lily rhizosphere microbes community in both sole lily cropping and lily/maize intercropping systems, by the llumina Miseq platform. Here we refer to data of recent years field experimentation of a lily/maize intercrop system in different planting configurations in the Gaolan Ecological and Agricultural Research Station. Treatments included sole crops of lily and maize, an intercrop consisting of strips of four lily rows alternating with one maize rows. The land equivalent ratio (LER) of intercrops was 1.294. The results showed that compared to sole cropping, the yield of lily in the first year of planting increased when lily was intercropped with maize. The species annotation of the high-throughput sequencing experiment showed that there was no difference in the diversity of the lily rhizosphere soil microbes on phylum taxonomic level, but the relative abundance of some genus changed obviously. The relative abundance of harmful fungus Fusarium spp. and, Funneliformis spp., decreased, and the relative abundance of beneficial bacteria Sphingomonas spp. and, Nitrospira spp., increased. In addition, we found that Lecanicillium spp., appeared only in the intercropping lily rhizosphere soil and sole cropping maize rhizosphere soil. In conclusion, the findings indicated that lily/maize intercropping could change soil microenvironment, and affect the diversity and structure of microorganism community in lily rhizosphere, with further beneficial effect on the yield of lily.
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Affiliation(s)
- Lijing Zhou
- Northwest Institute of Eco-environment and Resource, Chinese Academy of Sciences, Lanzhou, Gansu, China
| | - Yajun Wang
- Northwest Institute of Eco-environment and Resource, Chinese Academy of Sciences, Lanzhou, Gansu, China
| | - Zhongkui Xie
- Northwest Institute of Eco-environment and Resource, Chinese Academy of Sciences, Lanzhou, Gansu, China
| | - Yubao Zhang
- Northwest Institute of Eco-environment and Resource, Chinese Academy of Sciences, Lanzhou, Gansu, China
| | - Sukhdev S Malhi
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada
| | - Zhihong Guo
- Northwest Institute of Eco-environment and Resource, Chinese Academy of Sciences, Lanzhou, Gansu, China
| | - Yang Qiu
- Northwest Institute of Eco-environment and Resource, Chinese Academy of Sciences, Lanzhou, Gansu, China
| | - Le Wang
- Northwest Institute of Eco-environment and Resource, Chinese Academy of Sciences, Lanzhou, Gansu, China
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9
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Zhu S, Wang Y, Xu X, Liu T, Wu D, Zheng X, Tang S, Dai Q. Potential use of high-throughput sequencing of soil microbial communities for estimating the adverse effects of continuous cropping on ramie (Boehmeria nivea L. Gaud). PLoS One 2018; 13:e0197095. [PMID: 29750808 PMCID: PMC5947917 DOI: 10.1371/journal.pone.0197095] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 04/26/2018] [Indexed: 01/09/2023] Open
Abstract
Ramie (Boehmeria nivea L. Gaud) fiber, one of the most important natural fibers, is extracted from stem bark. Continuous cropping is the main obstacle to ramie stem growth and a major cause of reduced yields. Root-associated microbes play crucial roles in plant growth and health. In this study, we investigated differences between microbial communities in the soil of healthy and continuously cropped ramie plants, and sought to identify potential mechanisms whereby these communities could counteract the problems posed by continuous cropping. Paired-end Illumina MiSeq analysis of 16S rRNA and ITS gene amplicons was employed to study bacterial and fungal communities. Long-term monoculture of ramie significantly decreased fiber yields and altered soil microbial communities. Our findings revealed how microbial communities and functional diversity varied according to the planting year and plant health status. Soil bacterial diversity increased with the period of ramie monoculture, whereas no significant differences were observed for fungi. Sequence analyses revealed that Firmicutes, Proteobacteria, and Acidobacteria were the most abundant bacterial phyla. Firmicutes abundance decreased with the period of ramie monoculture and correlated positively with the stem length, stem diameter, and fiber yield. The Actinobacteria, Chloroflexi, and Zygomycota phyla exhibited a significant (P < 0.05) negative correlation with yields during continuous cultivation. Some Actinobacteria members showed reduced microbial diversity, which prevented continuous ramie cropping. Ascomycota, Zygomycota, and Basidiomycota were the main fungal phyla. The relatively high abundance of Bacillus observed in healthy ramie may contribute to disease suppression, thereby promoting ramie growth. In summary, soil weakness and increased disease in ramie plants after long-term continuous cropping can be attributed to changes in soil microbes, a reduction in beneficial microbes, and an accumulation of harmful microbes.
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Affiliation(s)
- Siyuan Zhu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, Hunan, P.R. China
- * E-mail: (SZ); (QD)
| | - Yanzhou Wang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, Hunan, P.R. China
| | - Xiaomin Xu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, Hunan, P.R. China
| | - Touming Liu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, Hunan, P.R. China
| | - Duanqing Wu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, Hunan, P.R. China
| | - Xia Zheng
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, Hunan, P.R. China
| | - Shouwei Tang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, Hunan, P.R. China
| | - Qiuzhong Dai
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, Hunan, P.R. China
- * E-mail: (SZ); (QD)
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Lakshman D, Vieira P, Pandey R, Slovin J, Kamo K. Symptom Development in Response to Combined Infection of In Vitro-grown Lilium longiflorum with Pratylenchus penetrans and Soilborne Fungi Collected from Diseased Roots of Field-grown Lilies. PLANT DISEASE 2017; 101:882-889. [PMID: 30682931 DOI: 10.1094/pdis-09-16-1336-re] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Eight fungal isolates (ELRF 1 to 8) were recovered from necrotic roots of Easter lilies, Lilium longiflorum cv. Nellie White, grown in a field in the U.S. Pacific Northwest. The eight fungal isolates were identified by sequencing and molecular phylogenetic analyses based on their ITS rDNA region. Five isolates were identified as Fusarium oxysporum, two as F. tricinctum, and one as Rhizoctonia sp. AG-I. This constitutes the first report of Rhizoctonia sp. AG-I infecting lilies worldwide and the first report of F. tricinctum infecting lilies in the United States. To study and validate their pathogenicity, pure cultures of each isolate were used to infect the roots of Easter lily plants growing in vitro. In addition, Easter lily plants growing in vitro were infected either with or without Pratylenchus penetrans, the root lesion nematode, prior to placing a culture plug of fungus 1 cm from a lily root. Pratylenchus penetrans is a nematode species commonly found in the sampled fields. The presence of both nematode and Rhizoctonia sp. AG-I isolate ELRF 3 in infected lilies was evaluated by molecular analyses, confirming the infection of roots 3 days after inoculation, prior to development of disease symptoms. Necrosis and root rot developed more rapidly with all eight fungal isolates when there had been prior infection with P. penetrans, the major nematode parasitizing Easter lily roots in the field in Oregon.
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Affiliation(s)
- Dilip Lakshman
- Sustainable Agricultural Systems Laboratory, USDA, Beltsville, MD 20705
| | - Paulo Vieira
- Floral and Nursery Plants Research Unit, U.S. National Arboretum, USDA, Beltsville, MD 20705, and Department of Plant Pathology, Physiology, and Weed Science, Virginia Tech, Blacksburg, VA 24061
| | - Ruchi Pandey
- Sustainable Agricultural Systems Laboratory, USDA, Beltsville, MD 20705
| | - Janet Slovin
- Genetic Improvement of Fruits and Vegetables Laboratory, USDA, Beltsville, MD 20705
| | - Kathryn Kamo
- Floral and Nursery Plants Research Unit, U.S. National Arboretum, USDA, Beltsville, MD 20705
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Illumina-based analysis of the rhizosphere microbial communities associated with healthy and wilted Lanzhou lily (Lilium davidii var. unicolor) plants grown in the field. World J Microbiol Biotechnol 2016; 32:95. [DOI: 10.1007/s11274-016-2051-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 03/12/2016] [Indexed: 12/30/2022]
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In vitro study of the growth, development and pathogenicity responses of Fusarium oxysporum to phthalic acid, an autotoxin from Lanzhou lily. World J Microbiol Biotechnol 2015; 31:1227-34. [DOI: 10.1007/s11274-015-1872-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 05/12/2015] [Indexed: 10/23/2022]
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