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Boughton CJ, Lancaster LT, Morgan ER. Biotic interactions in soil and dung shape parasite transmission in temperate ruminant systems: An integrative framework. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2024; 34:e2956. [PMID: 38426805 DOI: 10.1002/eap.2956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 09/01/2023] [Accepted: 12/07/2023] [Indexed: 03/02/2024]
Abstract
Gastrointestinal helminth parasites undergo part of their life cycle outside their host, such that developmental stages interact with the soil and dung fauna. These interactions are capable of affecting parasite transmission on pastures yet are generally ignored in current models, empirical studies and practical management. Dominant methods of parasite control, which rely on anthelmintic medications for livestock, are becoming increasingly ineffective due to the emergence of drug-resistant parasite populations. Furthermore, consumer and regulatory pressure on decreased chemical use in agriculture and the consequential disruption of biological processes in the dung through nontarget effects exacerbates issues with anthelmintic reliance. This presents a need for the application and enhancement of nature-based solutions and biocontrol methods. However, successfully harnessing these options relies on advanced understanding of the ecological system and interacting effects among biotic factors and with immature parasite stages. Here, we develop a framework linking three key groups of dung and soil fauna-fungi, earthworms, and dung beetles-with each other and developmental stages of helminths parasitic in farmed cattle, sheep, and goats in temperate grazing systems. We populate this framework from existing published studies and highlight the interplay between faunal groups and documented ecological outcomes. Of 1756 papers addressing abiotic drivers of populations of these organisms and helminth parasites, only 112 considered interactions between taxa and 36 presented data on interactions between more than two taxonomic groups. Results suggest that fungi reduce parasite abundance and earthworms may enhance fungal communities, while competition between dung taxa may reduce their individual effect on parasite transmission. Dung beetles were found to impact fungal populations and parasite transmission variably, possibly tied to the prevailing climate within a specific ecological context. By exploring combinations of biotic factors, we consider how interactions between species may be fundamental to the ecological consequences of biocontrol strategies and nontarget impacts of anthelmintics on dung and soil fauna and how pasture management alterations to promote invertebrates might help limit parasite transmission. With further development and parameterization the framework could be applied quantitatively to guide, prioritize, and interpret hypothesis-driven experiments and integrate biotic factors into established models of parasite transmission dynamics.
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Affiliation(s)
| | | | - Eric R Morgan
- School of Biological Sciences, Queen's University Belfast, Belfast, UK
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Zhang F, Boonmee S, Monkai J, Yang XY, Xiao W. Drechslerelladaliensis and D.xiaguanensis (Orbiliales, Orbiliaceae), two new nematode-trapping fungi from Yunnan, China. Biodivers Data J 2022; 10:e96642. [PMID: 36761641 PMCID: PMC9836436 DOI: 10.3897/bdj.10.e96642] [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: 10/23/2022] [Accepted: 12/02/2022] [Indexed: 12/23/2022] Open
Abstract
Background Nematode-trapping fungi are a highly specialised group in fungi and are essential regulators of natural nematode populations. At present, more than 130 species have been discovered in Zygomycota (Zoopagaceae), Basidiomycota (Nematoctonus), and Ascomycota (Orbiliaceae). Amongst them, nematode-trapping fungi in Orbiliaceae have become the research focus of carnivorous fungi due to their abundant species. During the investigation of carnivorous fungi in Yunnan, China, four fungal strains isolated from burned forest soil were identified as two new nematode-trapping species in Drechslerella (Orbiliaceae), based on multigene phylogenetic analysis and morphological characters. New information Drechslerelladaliensis sp. nov. is characterised by its ellipsoid, 1-2-septate macroconidia, clavate or bottle-shaped, 0-1-septate microconidia and unbranched, simple conidiophores. D.xiaguanensis sp. nov. is characterised by fusiform or spindle-shaped, 2-4-septate conidia and unbranched, simple conidiophores. Both of them produce constricting rings to capture nematodes. The phylogenetic analysis, based on combined ITS, TEF1-α and RPB2 sequences, determined their placement in Drechslerella. D.daliensis forms a basal lineage closely nested with D.hainanensis (YMF1.03993). D.xiaguanensis forms a sister lineage with D.bembicodes (1.01429), D.aphrobrocha (YMF1.00119) and D.coelobrocha (FWY03-25-1).
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Affiliation(s)
- Fa Zhang
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, ThailandCenter of Excellence in Fungal Research, Mae Fah Luang UniversityChiang RaiThailand,Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali, ChinaInstitute of Eastern-Himalaya Biodiversity Research, Dali UniversityDaliChina,School of Science, Mae Fah Luang University, Chiang Rai, ThailandSchool of Science, Mae Fah Luang UniversityChiang RaiThailand
| | - Saranyaphat Boonmee
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, ThailandCenter of Excellence in Fungal Research, Mae Fah Luang UniversityChiang RaiThailand,School of Science, Mae Fah Luang University, Chiang Rai, ThailandSchool of Science, Mae Fah Luang UniversityChiang RaiThailand
| | - Jutamart Monkai
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, ThailandCenter of Excellence in Fungal Research, Mae Fah Luang UniversityChiang RaiThailand
| | - Xiao-Yan Yang
- Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali, ChinaInstitute of Eastern-Himalaya Biodiversity Research, Dali UniversityDaliChina,Key Laboratory of Yunnan State Education Department on Er’hai Lake Basin Protection and the Sustainable Development Research, Dali University, Dali, ChinaKey Laboratory of Yunnan State Education Department on Er’hai Lake Basin Protection and the Sustainable Development Research, Dali UniversityDaliChina,The provincial innovation team of biodiversity conservation and utility of the three parallel rivers from Dali University, Dali University, Dali, ChinaThe provincial innovation team of biodiversity conservation and utility of the three parallel rivers from Dali University, Dali UniversityDaliChina
| | - Wen Xiao
- Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali, ChinaInstitute of Eastern-Himalaya Biodiversity Research, Dali UniversityDaliChina,Key Laboratory of Yunnan State Education Department on Er’hai Lake Basin Protection and the Sustainable Development Research, Dali University, Dali, ChinaKey Laboratory of Yunnan State Education Department on Er’hai Lake Basin Protection and the Sustainable Development Research, Dali UniversityDaliChina,The provincial innovation team of biodiversity conservation and utility of the three parallel rivers from Dali University, Dali University, Dali, ChinaThe provincial innovation team of biodiversity conservation and utility of the three parallel rivers from Dali University, Dali UniversityDaliChina
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3
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Zhang F, Boonmee S, Bhat JD, Xiao W, Yang XY. New Arthrobotrys Nematode-Trapping Species (Orbiliaceae) from Terrestrial Soils and Freshwater Sediments in China. J Fungi (Basel) 2022; 8:jof8070671. [PMID: 35887428 PMCID: PMC9317614 DOI: 10.3390/jof8070671] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/21/2022] [Accepted: 06/24/2022] [Indexed: 11/23/2022] Open
Abstract
Arthrobotrys is the most complex genus of Orbiliaceae nematode-trapping fungi. Its members are widely distributed in various habitats worldwide due to their unique nematode-trapping survival strategies. During a survey of nematophagous fungi in Yunnan Province, China, twelve taxa were isolated from terrestrial soil and freshwater sediment habitats and were identified as six new species in Arthrobotrys based on evidence from morphological and multigene (ITS, TEF, and RPB2) phylogenetic analyses. These new species i.e., Arthrobotrys eryuanensis, A. jinpingensis, A. lanpingensis, A. luquanensis, A. shuifuensis, and A. zhaoyangensis are named in recognition of their places of origin. Morphological descriptions, illustrations, taxonomic notes, and a multilocus phylogenetic analysis are provided for all new taxa. In addition, a key to known species in Arthrobotrys is provided, and the inadequacies in the taxonomic study of nematode-trapping fungi are also discussed.
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Affiliation(s)
- Fa Zhang
- Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali 671003, China; (F.Z.); (W.X.)
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand;
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Saranyaphat Boonmee
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand;
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | | | - Wen Xiao
- Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali 671003, China; (F.Z.); (W.X.)
- Key Laboratory of Yunnan State Education Department on Er’hai Lake Basin Protection and the Sustainable Development Research, Dali University, Dali 671003, China
- Yunling Back-and-White Snub-Nosed Monkey Observation and Research Station of Yunnan Province, Dali 671003, China
| | - Xiao-Yan Yang
- Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali 671003, China; (F.Z.); (W.X.)
- Key Laboratory of Yunnan State Education Department on Er’hai Lake Basin Protection and the Sustainable Development Research, Dali University, Dali 671003, China
- Correspondence:
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de Oliveira LDSSCB, Dias FGS, Melo ALT, de Carvalho LM, Silva EN, de Araújo JV. Bioverm ® in the Control of Nematodes in Beef Cattle Raised in the Central-West Region of Brazil. Pathogens 2021; 10:pathogens10050548. [PMID: 34062798 PMCID: PMC8147340 DOI: 10.3390/pathogens10050548] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/17/2021] [Accepted: 04/27/2021] [Indexed: 11/16/2022] Open
Abstract
Cooperia, Haemonchus and Oesophagostomum are the genera of gastrointestinal parasitic nematodes most prevalent in cattle and constitute a serious problem in cattle breeding due to the impact they have on meat and milk production and the high costs of control measures. The objective of the present work was to evaluate the efficiency of Bioverm® (Duddingtonia flagrans) in the control of gastrointestinal parasitism of young cattle raised in the field, in the Central-West region of Brazil. The experiment was conducted on a farm located in the municipality of Jangada, MT, where 18 cattle, Nelore and Aberdeen Angus breeds, aged six to ten months, were randomly divided into two groups (treated group and control group) and distributed in paddocks of Brachiaria decumbens, naturally infested by larvae of gastrointestinal nematodes. The animals in the treated group received 1g of Bioverm® for each 10 kg of body weight, administered daily with commercial feed, throughout a period of six months. In the control group, each animal received 1 g of rice bran for each 10 kg of body weight, without Bioverm®, added to the feed. Stool and pasture samples were collected every two weeks. The treated group showed a significant reduction (p < 0.05) in values of eggs per gram of feces (EPG) and a significant gain of body weight (p < 0.05) when compared to the control group. The fungal formulation Bioverm® was effective in pasture decontamination and consequently in reducing the occurrence of reinfection by nematodes. The animals treated with Bioverm® showed a lower parasitic load and greater weight gain.
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Affiliation(s)
| | - Felipe Guerra Santos Dias
- Faculty of Veterinary Medicine, Universidade de Cuiabá, Cuiabá 78557-287, MT, Brazil; (L.d.S.S.C.B.d.O.); (F.G.S.D.); (A.L.T.M.)
| | - Andréia Lima Tomé Melo
- Faculty of Veterinary Medicine, Universidade de Cuiabá, Cuiabá 78557-287, MT, Brazil; (L.d.S.S.C.B.d.O.); (F.G.S.D.); (A.L.T.M.)
| | | | - Edir Nepomuceno Silva
- Faculty of Food Engineering, Universidade de Campinas, Campinas 13083-970, SP, Brazil;
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He ZQ, Wang LJ, Wang YJ, Chen YH, Wen Y, Zhang KQ, Niu XM. Polyketide Synthase-Terpenoid Synthase Hybrid Pathway Regulation of Trap Formation through Ammonia Metabolism Controls Soil Colonization of Predominant Nematode-Trapping Fungus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:4464-4479. [PMID: 33823587 DOI: 10.1021/acs.jafc.1c00771] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Polyketide synthase-terpenoid synthase (PKS-TPS) hybrid pathways for biosynthesis of unique sesquiterpenyl epoxy-cyclohexenoids (SECs) have been found to be widely distributed in plant pathogenic fungi. However, the natural and ecological functions of these pathways and their metabolites still remain cryptic. In this study, the whole PKS-TPS hybrid pathway in the predominant nematode-trapping fungus Arthrobotrys oligospora was first proposed according to all the intermediates and their derivatives from all the A. oligospora mutants with a deficiency in each gene involved in SEC biosynthesis. Most mutants displayed significantly increased trap formation which was correlated with alteration of the ammonia level. Further analysis revealed that the main metabolites involved in ammonia metabolism were largely increased in most mutants. However, significantly retarded colonization in soil were observed in most mutants compared to the wild-type strain due to significantly decreased antibacterial activities. Our results suggested that A. oligospora used the PKS-TPS hybrid pathway for fungal soil colonization via decreasing fungal nematode-capturing ability. This also provided solid evidence that boosting fungal colonization in soil was the secondary metabolite whose biosynthesis depended on a PKS-TPS hybrid pathway.
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Affiliation(s)
- Zhi-Qiang He
- State Key Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, School of life Sciences, Yunnan University, Kunming, 650091, People's Republic of China
| | - Li-Jun Wang
- State Key Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, School of life Sciences, Yunnan University, Kunming, 650091, People's Republic of China
| | - Yu-Jing Wang
- State Key Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, School of life Sciences, Yunnan University, Kunming, 650091, People's Republic of China
| | - Yong-Hong Chen
- State Key Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, School of life Sciences, Yunnan University, Kunming, 650091, People's Republic of China
| | - Ya Wen
- State Key Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, School of life Sciences, Yunnan University, Kunming, 650091, People's Republic of China
| | - Ke-Qin Zhang
- State Key Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, School of life Sciences, Yunnan University, Kunming, 650091, People's Republic of China
| | - Xue-Mei Niu
- State Key Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, School of life Sciences, Yunnan University, Kunming, 650091, People's Republic of China
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6
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He ZQ, Tan JL, Li N, Zhang HX, Chen YH, Wang LJ, Zhang KQ, Niu XM. Sesquiterpenyl Epoxy-Cyclohexenoids and their Signaling Functions in Nematode-Trapping Fungus Arthrobotrys oligospora. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:13061-13072. [PMID: 31738551 DOI: 10.1021/acs.jafc.9b04968] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, we purified three new sesquiterpenyl epoxy-cyclohexenoid (SEC) analogues, arthrobotrisin D (11) and its two derivatives, from nematode-trapping fungus Arthrobotrys oligospora. Our results revealed that arthrobotrisin type SEC metabolites could be detected in all the test fungal strains from geographically distinct regions grown on different nutrient media, indicative of unique diagnostic character as chemical indicators for A. oligospora. The time course designs over short-term intervals of the fungus under direct contact and indirect contact with living or dead nematodes revealed that arthrobotrisin B and D (6 and 11) displayed significant relationships (positive or negative correlation) with fungal saprophytic and pathogenic stages during a nematode predation event. Interestingly, fungus on nutrient-limiting medium conducive to fungal trap formation could rapidly drop the concentration levels of arthrobotrisins B and D within 6 h when dead nematodes were around, in great contrast to that for living nematodes. Moreover, only in the fungal strain under direct contact with living dominant soil bacteria, arthrobotrisins B and D exhibited significant increase in amounts. Among them, the new SEC, arthrobotrisin D (11) was found to be a key unique metabolic signal for fungal colony growth and fungal interaction with prey and bacteria. Our study suggested that chemical analysis of SEC metabolites in A. oligospora provides a window into the fungal growth status and much valuable information about ecological environments associated with the nematode infections.
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Affiliation(s)
- Zhi-Qiang He
- State Key Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, School of Life Sciences , Yunnan University , Kunming 650091 , People's Republic of China
| | - Jian-Lin Tan
- State Key Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, School of Life Sciences , Yunnan University , Kunming 650091 , People's Republic of China
- Yunnan Institute of Product Quality Supervision and Inspection & National Tropical Agricultural and Sideline Products Quality Supervision and Inspection Center , Kunming 650223 , People's Republic of China
| | - Nan Li
- State Key Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, School of Life Sciences , Yunnan University , Kunming 650091 , People's Republic of China
| | - Hui-Xiang Zhang
- State Key Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, School of Life Sciences , Yunnan University , Kunming 650091 , People's Republic of China
| | - Yong-Hong Chen
- State Key Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, School of Life Sciences , Yunnan University , Kunming 650091 , People's Republic of China
| | - Li-Jun Wang
- State Key Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, School of Life Sciences , Yunnan University , Kunming 650091 , People's Republic of China
| | - Ke-Qin Zhang
- State Key Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, School of Life Sciences , Yunnan University , Kunming 650091 , People's Republic of China
| | - Xue-Mei Niu
- State Key Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, School of Life Sciences , Yunnan University , Kunming 650091 , People's Republic of China
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Ojeda-Robertos NF, Aguilar-Marcelino L, Olmedo-Juárez A, Luna-Palomera C, Peralta-Torres JA, López-Arellano ME, Mendoza-de-Gives P. In vitro predatory activity of nematophagous fungi isolated from water buffalo feces and from soil in the Mexican southeastern. ACTA ACUST UNITED AC 2019; 28:314-319. [PMID: 31188940 DOI: 10.1590/s1984-29612019011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 02/11/2019] [Indexed: 11/21/2022]
Abstract
Nematophagous fungi from the feces of water buffalo and soil from southeastern Mexico were isolated, and their in vitro predatory activity against Haemonchus contortus infective larvae (L3) (HcL3) was assessed. The fungi were isolated by sprinkling soil or feces on water agar plates. Six series of 10 Petri dishes containing a 7-day-old culture of each fungus and a series without fungi as the control were prepared. Five hundred HcL3 were added to each plate. The plates were incubated at room temperature. The average of recovered HcL3 was considered to estimate the larval reduction rate. Four nematophagous fungi isolates corresponding to Arthrobotrys oligospora, var microspora (strains 4-276, 269 and 50-80) and one identified as A. oligospora,var. oligospora (isolates 48-80) were obtained from water buffalo feces. From the soil, five isolates were isolated; three corresponded to A. musiformis (Bajío, Yumca and Macuspana isolates), and two isolates were identified as A. oligospora (Comalcalco and Jalapa de Méndez isolates). The predatory activity of isolates from water buffalo feces ranged between 85.9 and 100%. Meanwhile, the fungi from the soil ranged between 55.5 and 100% (p≤0.05). The nematophagous fungi obtained could have important implications in the control of parasites of importance in the livestock industry.
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Affiliation(s)
| | - Liliana Aguilar-Marcelino
- Centro Nacional de Investigación Disciplinaria en Parasitología Veterinaria - INIFAP, Jiutepec, Morelos, México
| | - Agustín Olmedo-Juárez
- Centro Nacional de Investigación Disciplinaria en Parasitología Veterinaria - INIFAP, Jiutepec, Morelos, México
| | - Carlos Luna-Palomera
- División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, México
| | - Jorge Alonso Peralta-Torres
- División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, México
| | | | - Pedro Mendoza-de-Gives
- Centro Nacional de Investigación Disciplinaria en Parasitología Veterinaria - INIFAP, Jiutepec, Morelos, México
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Wang BB, Zhang N, Gong PT, Li JH, Yang J, Zhang HB, Zhang XC, Cai KZ. Morphological variability, molecular phylogeny, and biological characteristics of the nematophagous fungus Duddingtonia flagrans. J Basic Microbiol 2019; 59:645-657. [PMID: 30900744 DOI: 10.1002/jobm.201800610] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 03/04/2019] [Accepted: 03/09/2019] [Indexed: 11/08/2022]
Abstract
This study aims to investigate the molecular phylogenetic analysis, morphological variability, nematode-capturing ability, and other biological properties of Chinese Duddingtonia flagrans isolates. We isolated 13 isolates of D. flagrans and found features that have never been reported before, such as two to three septa incluing club-shaped conidia. Meanwhile, we conducted molecular phylogenetic analysis of the seven isolates and tested the radical growth of the isolates under different pH values, temperatures, and media. The capturing ability against infective larvae (L3) of Cooperia spp. in yak was detected in vitro. Finally, one isolate was selected for scanning electron microscopy (SEM) to investigate the trap formation process. The fungal sequence was obtained and submitted to GenBank (Accession no. KY288614.1, KU881774.1, KP257593.1, KY419119.1, MF488979.1, MF488980.1, and MF488981.1), and the tested isolates were identified as D. flagrans. Except for three isolates, the radial growth of the other isolates on 2% corn meal agar and 2% water agar exhibited faster growth than on other media. The fungus could not grow at 10 and 40°C but grew within 11 to 30°C. Moreover, it did not grow at pH 1-3 and 13-14, but instead at pH 4-12. In the in vitro experimental, L3s were reduced by 94.36%, 88.15%, and 91.04% for SDH035, DH055, and F088, respectively. SEM results showed that at 8 hr post addition of nematodes, some of the latter were captured. In the later stages of the interaction of the fungus with nematodes, a large number of chlamydospores were produced, especially on the predation trap. Results of the present study provided information about the molecular phylogenetic analysis, morphological variability, nematode-capturing ability, and other biological properties of Chinese Arthrobotrys flagrans isolates before administering them for biocontrol.
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Affiliation(s)
- Bo-Bo Wang
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Nan Zhang
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Peng-Tao Gong
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jian-Hua Li
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Ju Yang
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Hong-Bo Zhang
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xi-Chen Zhang
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Kui-Zheng Cai
- College of Life Science Engineering, Northwest Minzu University, Lanzhou, China
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9
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Predatory effect of Duddingtonia flagrans on infective larvae of gastro-intestinal parasites under sunny and shaded conditions. Exp Parasitol 2018; 193:27-32. [PMID: 30053398 DOI: 10.1016/j.exppara.2018.07.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 05/25/2018] [Accepted: 07/24/2018] [Indexed: 11/22/2022]
Abstract
Duddingtonia flagrans is a natural strain of Nematophagous-Fungi isolated around the world. It has demonstrated efficacy and ease of use in laboratory as well as in field conditions. The fungus contributes to the prophylactic control of the worms by reducing the number of L3 on pasture. The aims of this study were to test and analyze the predatory effect of D. flagrans under sunny and shaded conditions on the L3 in the faeces, and to verify the reduction of translation to pasture during summer and winter seasons. Faecal Mass Units (FMUs) were assigned to two treated groups (groups treated with D. flagrans chlamydospores, TG) and two untreated groups (without D. flagrans chlamydospores, UG), in summer and winter, under sunny and shaded conditions. FMUs and herbage samples were taken for parasitological workup. Predatory activity of D. flagrans was evident under both conditions for the summer experiment but was not manifest for the winter experiment. In summer, an interaction between sunny and shaded conditions and predatory activity of D. flagrans was found. Environmental conditions on predatory activity should be considered when designing strategies for the implementation of D. flagrans in grazing systems to smooth the infectivity curve of L3.
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10
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Cai KZ, Liu JL, Liu W, Wang BB, Xu Q, Sun LJ, Chen MY, Zhao MW, Wu JY, Li XS, Yang J, Wei S, Chen CR, Ma ZR, Xu CL, Wang F, Hu QL, Fang WX, Zheng TH, Wang YY, Zhu WL, Li D, Li Q, Zhang C, Cai B, Wang F, Yang ZY, Liu YQ. Screening of different sample types associated with sheep and cattle for the presence of nematophagous fungi in China. J Basic Microbiol 2015; 56:214-28. [DOI: 10.1002/jobm.201500281] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 08/19/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Kui-Zheng Cai
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Jun-Lin Liu
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Wei Liu
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Bo-Bo Wang
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Qiang Xu
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Long-Jie Sun
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Ming-Yue Chen
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Ming-Wang Zhao
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Jia-Yan Wu
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Xiao-Shan Li
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Jing Yang
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Shuan Wei
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Chun-Rong Chen
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Zhong-Ren Ma
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Chun-Lan Xu
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Feng Wang
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Qian-Lin Hu
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Wen-Xiu Fang
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Tian-Hui Zheng
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Yue-Ying Wang
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Wen-Long Zhu
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Dan Li
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Qing Li
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Chao Zhang
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Bing Cai
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Fan Wang
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Zai-Yun Yang
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
| | - Yan-Qiu Liu
- College of Life Science and Engineering; Northwest University for Nationalities; Lanzhou China
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11
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An isolate of the nematophagous fungusMonacrosporium thaumasiumfor the control of cattle trichostrongyles in south-eastern Brazil. J Helminthol 2014; 89:244-9. [DOI: 10.1017/s0022149x14000091] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractA mycelial formulation in sodium alginate pellets of the nematophagous fungusMonacrosporium thaumasium(isolate NF34A) was assessed in the biological control of beef cattle trichostrongyles in tropical Brazil. Two groups of ten male Nellore calves aged 6 months, a fungus-treated group and a control group, were fed on a pasture ofBrachiaria decumbensnaturally infected with larvae of cattle trichostrongyles. The fungus-treated group received doses of sodium alginate mycelial pellets orally (1 g pellets (0.2 g fungus)/10 kg live weight) twice a week for 12 months. At the end of the study there was a significant reduction (P< 0.01) in the number of eggs per gram of faeces and coprocultures of the fungus-treated group – 47.8% and 50.2%, respectively – in relation to the control group. There was a 47.3% reduction in herbage samples, collected up to 0–20 cm from faecal pats, between the fungus-treated and control groups, and a 58% reduction when the sampling distance was 20–40 cm from faecal pats (P< 0.01). The treatment with sodium alginate pellets containing the nematode-trapping fungusM. thaumasiumreduced trichostrongyles in tropical south-eastern Brazil and could be an effective tool for the biological control of this parasitic nematode in beef cattle. However, in such a tropical climate with low rainfall the fungal viability can be reduced.
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12
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Bills GF, Gloer JB, An Z. Coprophilous fungi: antibiotic discovery and functions in an underexplored arena of microbial defensive mutualism. Curr Opin Microbiol 2013; 16:549-65. [DOI: 10.1016/j.mib.2013.08.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 08/01/2013] [Accepted: 08/06/2013] [Indexed: 01/24/2023]
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13
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Zhang Y, Qiao M, Xu J, Cao Y, Zhang KQ, Yu ZF. Genetic diversity and recombination in natural populations of the nematode-trapping fungus Arthrobotrys oligospora from China. Ecol Evol 2013; 3:312-25. [PMID: 23467563 PMCID: PMC3586641 DOI: 10.1002/ece3.450] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2012] [Revised: 11/12/2012] [Accepted: 11/15/2012] [Indexed: 11/09/2022] Open
Abstract
Nematophagous fungi can trap and capture nematodes and other small invertebrates. This unique ability has made them ideal organisms from which to develop biological control agents against plant- and animal-parasitic nematodes. However, effective application of biocontrol agents in the field requires a comprehensive understanding about the ecology and population genetics of the nematophagous fungi in natural environments. Here, we genotyped 228 strains of the nematode-trapping fungus Arthrobotrys oligospora using 12 single nucleotide polymorphic markers located on eight random DNA fragments. The strains were from different ecological niches and geographical regions from China. Our analyses identified that ecological niche separations contributed significantly, whereas geographic separation contributed relatively little to the overall genetic variation in our samples of A. oligospora. Interestingly, populations from stressful environments seemed to be more variable and showed more evidence for recombination than those from benign environments at the same geographic areas. We discussed the implications of our results to the conservation and biocontrol application of A. oligospora in agriculture and forestry.
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Affiliation(s)
- Ying Zhang
- Laboratory for Conservation and Utilization of Bio-resources, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan UniversityKunming, Yunnan, 650091, China
| | - Min Qiao
- Laboratory for Conservation and Utilization of Bio-resources, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan UniversityKunming, Yunnan, 650091, China
| | - Jianping Xu
- Laboratory for Conservation and Utilization of Bio-resources, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan UniversityKunming, Yunnan, 650091, China
- Department of Biology, McMaster University1280 Main Street West, Hamilton, Ontario, Canada, L8S 4K1
| | - Yang Cao
- Laboratory for Conservation and Utilization of Bio-resources, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan UniversityKunming, Yunnan, 650091, China
| | - Ke-Qin Zhang
- Laboratory for Conservation and Utilization of Bio-resources, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan UniversityKunming, Yunnan, 650091, China
| | - Ze-Fen Yu
- Laboratory for Conservation and Utilization of Bio-resources, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan UniversityKunming, Yunnan, 650091, China
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14
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Assis RCL, Luns FD, Araújo JV, Braga FR. Biological control of trichostrongyles in beef cattle by the nematophagous fungus Duddingtonia flagrans in tropical southeastern Brazil. Exp Parasitol 2012; 132:373-7. [PMID: 22975475 DOI: 10.1016/j.exppara.2012.08.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Revised: 08/09/2012] [Accepted: 08/28/2012] [Indexed: 11/28/2022]
Affiliation(s)
- R C L Assis
- Federal University of Viçosa, Department of Veterinary Medicine, Laboratory of Parasitology, Av. P.H. Rolphs-Viçosa Campus, Zip code 36570 000, Viçosa-Minas Gerais, Brazil.
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15
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Niu XM, Zhang KQ. Arthrobotrys oligospora: a model organism for understanding the interaction between fungi and nematodes. Mycology 2011. [DOI: 10.1080/21501203.2011.562559] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Xue-Mei Niu
- a Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan University , Kunming, 650091, China
| | - Ke-Qin Zhang
- a Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan University , Kunming, 650091, China
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