1
|
Xue Y, Li W, Li M, Ru N, Chen S, Jiu M, Feng H, Wei L, Daly P, Zhou D. Biological Control of a Root-Knot Nematode Meloidogyne incognita Infection of Tomato ( Solanum lycopersicum L.) by the Oomycete Biocontrol Agent Pythium oligandrum. J Fungi (Basel) 2024; 10:265. [PMID: 38667936 PMCID: PMC11051105 DOI: 10.3390/jof10040265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/13/2024] [Accepted: 03/15/2024] [Indexed: 04/28/2024] Open
Abstract
The biocontrol agent Pythium oligandrum, which is a member of the phylum Oomycota, can control diseases caused by a taxonomically wide range of plant pathogens, including fungi, bacteria, and oomycetes. However, whether P. oligandrum could control diseases caused by plant root-knot nematodes (RKNs) was unknown. We investigated a recently isolated P. oligandrum strain GAQ1, and the P. oligandrum strain CBS530.74, for the control of an RKN Meloidogyne incognita infection of tomato (Solanum lycopersicum L.). Initially, P. oligandrum culture filtrates were found to be lethal to M. incognita second-stage juveniles (J2s) with up to 84% mortality 24 h after treatment compared to 14% in the control group. Consistent with the lethality to M. incognita J2s, tomato roots treated with P. oligandrum culture filtrates reduced their attraction of nematodes, and the number of nematodes penetrating the roots was reduced by up to 78%. In a greenhouse pot trial, the P. oligandrum GAQ1 inoculation of tomato plants significantly reduced the gall number by 58% in plants infected with M. incognita. Notably, the P. oligandrum GAQ1 mycelial treatment significantly increased tomato plant height (by 36%), weight (by 27%), and root weight (by 48%). A transcriptome analysis of tomato seedling roots inoculated with the P. oligandrum GAQ1 strain identified ~2500 differentially expressed genes. The enriched GO terms and annotations in the up-regulated genes suggested a modulation of the plant hormone-signaling and defense-related pathways in response to P. oligandrum. In conclusion, our results support that P. oligandrum GAQ1 can serve as a potential biocontrol agent for M. incognita control in tomato. Multiple mechanisms appear to contribute to the biocontrol effect, including the direct inhibition of M. incognita, the potential priming of tomato plant defenses, and plant growth promotion.
Collapse
Affiliation(s)
- Yuwei Xue
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China; (Y.X.); (W.L.)
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (M.L.); (N.R.); (S.C.); (H.F.); (L.W.)
| | - Weishan Li
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China; (Y.X.); (W.L.)
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (M.L.); (N.R.); (S.C.); (H.F.); (L.W.)
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Mengnan Li
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (M.L.); (N.R.); (S.C.); (H.F.); (L.W.)
- College of Landscape and Ecological Engineering, Hebei University of Engineering, Handan 471023, China
| | - Ningchen Ru
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (M.L.); (N.R.); (S.C.); (H.F.); (L.W.)
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Siqiao Chen
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (M.L.); (N.R.); (S.C.); (H.F.); (L.W.)
- Fungal Genomics Laboratory (FungiG), Nanjing Agricultural University, Nanjing 210095, China
| | - Min Jiu
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China; (Y.X.); (W.L.)
| | - Hui Feng
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (M.L.); (N.R.); (S.C.); (H.F.); (L.W.)
| | - Lihui Wei
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (M.L.); (N.R.); (S.C.); (H.F.); (L.W.)
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Paul Daly
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (M.L.); (N.R.); (S.C.); (H.F.); (L.W.)
| | - Dongmei Zhou
- Key Lab of Food Quality and Safety of Jiangsu Province—State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (M.L.); (N.R.); (S.C.); (H.F.); (L.W.)
| |
Collapse
|
2
|
Dieye CAT, Durand N, Schorr-Galindo S, Strub C, Fontana A. Impacts of abiotic factors on the growth of three commercial biological control agents, on the growth and mycotoxinogenesis of Fusarium graminearum and on their interaction. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:932-941. [PMID: 37721389 DOI: 10.1002/jsfa.12991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 07/03/2023] [Accepted: 09/18/2023] [Indexed: 09/19/2023]
Abstract
BACKGROUND Evolving climatic conditions impact the behavior of microorganisms. The lack of efficiency of beneficial microorganisms against pathogens can be due to these evolving abiotic factors more favorable to the development and adaptation of pathogens. It is therefore of great interest to understand their impact (especially temperature increase and relative humidity (RH) variation) on pathogenic and non-pathogenic microorganisms. This work aimed to examine the possible effects of increasing temperature (20, 25, 30 and 33 °C) and RH (40%, 50%, 60% and 80%) on the growth and mycotoxin production (deoxynivalenol (DON) and zearalenone (ZEN)) of Fusarium graminearum, on the growth of three commercial biocontrol agents (BCAs; Mycostop®, Xedavir® and Polyversum®) and on the pathogen-BCA interaction. RESULTS Results demonstrated that BCAs have contrasting impacts on the growth and mycotoxinogenesis of F. graminearum depending on abiotic factors. At 25 °C and regardless of RH, commercial BCAs limit DON production by F. graminearum, but at 30 °C and intermediate RH, Xedavir® is no longer effective. The ability of Xedavir® to control the production of ZEN production by F. graminearum is also affected by abiotic factors. However, increasing temperature has an opposite effect on its ability to control the accumulation of ZEN. Polyversum® oomycete is the BCA with the most resilient efficacy against F. graminearum toxinogenesis under the different abiotic factors. CONCLUSION This work provides new knowledge of the effect of these abiotic parameters on the interaction between BCA and F. graminearum, especially on the production of mycotoxins. It paves the way for the development of efficient and resilient mycotoxin biocontrol strategies using beneficial microorganisms against F. graminearum, thus contributing to global food security. © 2023 Society of Chemical Industry.
Collapse
Affiliation(s)
- Cheikh Ahmeth Tidiane Dieye
- UMR Qualisud, Univ Montpellier, Univ Avignon, CIRAD, Institut Agro, IRD, Univ de la Réunion, Montpellier, France
| | - Noël Durand
- UMR Qualisud, Univ Montpellier, Univ Avignon, CIRAD, Institut Agro, IRD, Univ de la Réunion, Montpellier, France
- CIRAD, UMR Qualisud, France - Qualisud, Univ Montpellier, Univ Avignon, CIRAD, Institut Agro, IRD, Univ de La Réunion, Montpellier, France
- Qualisud, Univ Montpellier, Univ Avignon, CIRAD, Institut Agro, IRD, Univ de La Réunion, Montpellier, France
| | - Sabine Schorr-Galindo
- UMR Qualisud, Univ Montpellier, Univ Avignon, CIRAD, Institut Agro, IRD, Univ de la Réunion, Montpellier, France
| | - Caroline Strub
- UMR Qualisud, Univ Montpellier, Univ Avignon, CIRAD, Institut Agro, IRD, Univ de la Réunion, Montpellier, France
| | - Angélique Fontana
- UMR Qualisud, Univ Montpellier, Univ Avignon, CIRAD, Institut Agro, IRD, Univ de la Réunion, Montpellier, France
| |
Collapse
|
3
|
Yazid SNE, Tajudin NI, Razman NAA, Selamat J, Ismail SI, Sanny M, Samsudin NIP. Mycotoxigenic fungal growth inhibition and multi-mycotoxin reduction of potential biological control agents indigenous to grain maize. Mycotoxin Res 2023:10.1007/s12550-023-00484-4. [PMID: 37219742 PMCID: PMC10204017 DOI: 10.1007/s12550-023-00484-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 05/03/2023] [Accepted: 05/09/2023] [Indexed: 05/24/2023]
Abstract
The present work investigated the potential of fungal species from grain maize farms in Malaysia as antagonists against the indigenous mycotoxigenic fungal species and their subsequent mycotoxin production. Dual-culture assay was conducted on grain maize agar (GMA) with 12 strains of potential fungal antagonists namely Bjerkandra adusta, Penicillium janthinellum, Schizophyllum commune, Trametes cubensis, Trichoderma asperelloides, Trichoderma asperellum, Trichoderma harzianum, and Trichoderma yunnanense against seven mycotoxigenic strains namely Aspergillus flavus, Aspergillus niger, Fusarium verticillioides, and Fusarium proliferatum producing aflatoxins, ochratoxin A, and fumonisins, respectively. Based on fungal growth inhibition, Trichoderma spp. showed the highest inhibitory activity (73-100% PIRG, Percentage Inhibition of Radial Growth; 28/0 ID, Index of Dominance) against the tested mycotoxigenic strains. Besides, B. adusta and Tra. cubensis showed inhibitory activity against some of the tested mycotoxigenic strains. All fungal antagonists showed varying degrees of mycotoxin reduction. Aflatoxin B1 produced by A. flavus was mainly reduced by P. janthinellum, Tra. cubensis, and B. adusta to 0 ng/g. Ochratoxin A produced by A. niger was mainly reduced by Tri. harzianum and Tri. asperellum to 0 ng/g. Fumonisin B1 and FB2 produced by F. verticillioides was mainly reduced by Tri. harzianum, Tri. asperelloides, and Tri. asperellum to 59.4 and 0 µg/g, respectively. Fumonisin B1 and FB2 produced by F. proliferatum were mainly reduced by Tri. asperelloides and Tri. harzianum to 244.2 and 0 µg/g, respectively. This is the first study that reports on the efficacy of Tri. asperelloides against FB1, FB2, and OTA, P. janthinellum against AFB1, and Tra. cubensis against AFB1.
Collapse
Affiliation(s)
- Siti Nur Ezzati Yazid
- Laboratory of Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Nur Izzah Tajudin
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Nur Aina Aribah Razman
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Jinap Selamat
- Laboratory of Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Siti Izera Ismail
- Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Maimunah Sanny
- Laboratory of Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Nik Iskandar Putra Samsudin
- Laboratory of Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
| |
Collapse
|
4
|
Dutta P, Mahanta M, Singh SB, Thakuria D, Deb L, Kumari A, Upamanya GK, Boruah S, Dey U, Mishra AK, Vanlaltani L, VijayReddy D, Heisnam P, Pandey AK. Molecular interaction between plants and Trichoderma species against soil-borne plant pathogens. FRONTIERS IN PLANT SCIENCE 2023; 14:1145715. [PMID: 37255560 PMCID: PMC10225716 DOI: 10.3389/fpls.2023.1145715] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 04/05/2023] [Indexed: 06/01/2023]
Abstract
Trichoderma spp. (Hypocreales) are used worldwide as a lucrative biocontrol agent. The interactions of Trichoderma spp. with host plants and pathogens at a molecular level are important in understanding the various mechanisms adopted by the fungus to attain a close relationship with their plant host through superior antifungal/antimicrobial activity. When working in synchrony, mycoparasitism, antibiosis, competition, and the induction of a systemic acquired resistance (SAR)-like response are considered key factors in deciding the biocontrol potential of Trichoderma. Sucrose-rich root exudates of the host plant attract Trichoderma. The soluble secretome of Trichoderma plays a significant role in attachment to and penetration and colonization of plant roots, as well as modulating the mycoparasitic and antibiosis activity of Trichoderma. This review aims to gather information on how Trichoderma interacts with host plants and its role as a biocontrol agent of soil-borne phytopathogens, and to give a comprehensive account of the diverse molecular aspects of this interaction.
Collapse
Affiliation(s)
- Pranab Dutta
- School of Crop Protection, College of Post Graduate Studies in Agricultural Sciences, Central Agricultural University (Imphal), Meghalaya, Imphal, India
| | - Madhusmita Mahanta
- School of Crop Protection, College of Post Graduate Studies in Agricultural Sciences, Central Agricultural University (Imphal), Meghalaya, Imphal, India
| | | | - Dwipendra Thakuria
- School of Natural Resource Management, College of Post Graduate Studies in Agricultural Sciences, Central Agricultural University (Imphal), Imphal, India
| | - Lipa Deb
- School of Crop Protection, College of Post Graduate Studies in Agricultural Sciences, Central Agricultural University (Imphal), Meghalaya, Imphal, India
| | - Arti Kumari
- School of Crop Protection, College of Post Graduate Studies in Agricultural Sciences, Central Agricultural University (Imphal), Meghalaya, Imphal, India
| | - Gunadhya K. Upamanya
- Sarat Chandra Singha (SCS) College of Agriculture, Assam Agricultural University (Jorhat), Dhubri, Assam, India
| | - Sarodee Boruah
- Krishi Vigyan Kendra (KVK)-Tinsukia, Assam Agricultural University (Jorhat), Tinsukia, Assam, India
| | - Utpal Dey
- Krishi Vigyan Kendra (KVK)-Sepahijala, Central Agricultural University (Imphal), Tripura, Sepahijala, India
| | - A. K. Mishra
- Department of Plant Pathology, Dr Rajendra Prasad Central Agricultural University, Bihar, Samastipur, India
| | - Lydia Vanlaltani
- School of Crop Protection, College of Post Graduate Studies in Agricultural Sciences, Central Agricultural University (Imphal), Meghalaya, Imphal, India
| | - Dumpapenchala VijayReddy
- School of Crop Protection, College of Post Graduate Studies in Agricultural Sciences, Central Agricultural University (Imphal), Meghalaya, Imphal, India
| | - Punabati Heisnam
- Department of Agronomy, Central Agricultural University (Imphal), Pasighat, India
| | - Abhay K. Pandey
- Department of Mycology and Microbiology, Tea Research Association, North Bengal Regional, R & D Center, Jalpaiguri, West Bengal, India
| |
Collapse
|
5
|
Guzmán-Guzmán P, Kumar A, de los Santos-Villalobos S, Parra-Cota FI, Orozco-Mosqueda MDC, Fadiji AE, Hyder S, Babalola OO, Santoyo G. Trichoderma Species: Our Best Fungal Allies in the Biocontrol of Plant Diseases-A Review. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12030432. [PMID: 36771517 PMCID: PMC9921048 DOI: 10.3390/plants12030432] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/08/2023] [Accepted: 01/13/2023] [Indexed: 06/02/2023]
Abstract
Biocontrol agents (BCA) have been an important tool in agriculture to prevent crop losses due to plant pathogens infections and to increase plant food production globally, diminishing the necessity for chemical pesticides and fertilizers and offering a more sustainable and environmentally friendly option. Fungi from the genus Trichoderma are among the most used and studied microorganisms as BCA due to the variety of biocontrol traits, such as parasitism, antibiosis, secondary metabolites (SM) production, and plant defense system induction. Several Trichoderma species are well-known mycoparasites. However, some of those species can antagonize other organisms such as nematodes and plant pests, making this fungus a very versatile BCA. Trichoderma has been used in agriculture as part of innovative bioformulations, either just Trichoderma species or in combination with other plant-beneficial microbes, such as plant growth-promoting bacteria (PGPB). Here, we review the most recent literature regarding the biocontrol studies about six of the most used Trichoderma species, T. atroviride, T. harzianum, T. asperellum, T. virens, T. longibrachiatum, and T. viride, highlighting their biocontrol traits and the use of these fungal genera in Trichoderma-based formulations to control or prevent plant diseases, and their importance as a substitute for chemical pesticides and fertilizers.
Collapse
Affiliation(s)
- Paulina Guzmán-Guzmán
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico
| | - Ajay Kumar
- Department of Postharvest Science, ARO, Volcani Center, Bet Dagan 50250, Israel
| | | | - Fannie I. Parra-Cota
- Campo Experimental Norman E. Borlaug, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Ciudad Obregón 85000, Mexico
| | | | - Ayomide Emmanuel Fadiji
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa
| | - Sajjad Hyder
- Department of Botany, Government College Women University Sialkot, Sialkot 51310, Pakistan
| | - Olubukola Oluranti Babalola
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa
| | - Gustavo Santoyo
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico
| |
Collapse
|
6
|
Bryła M, Pierzgalski A, Zapaśnik A, Uwineza PA, Ksieniewicz-Woźniak E, Modrzewska M, Waśkiewicz A. Recent Research on Fusarium Mycotoxins in Maize—A Review. Foods 2022; 11:foods11213465. [PMID: 36360078 PMCID: PMC9659149 DOI: 10.3390/foods11213465] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022] Open
Abstract
Maize (Zea mays L.) is one of the most susceptible crops to pathogenic fungal infections, and in particular to the Fusarium species. Secondary metabolites of Fusarium spp.—mycotoxins are not only phytotoxic, but also harmful to humans and animals. They can cause acute or chronic diseases with various toxic effects. The European Union member states apply standards and legal regulations on the permissible levels of mycotoxins in food and feed. This review summarises the most recent knowledge on the occurrence of toxic secondary metabolites of Fusarium in maize, taking into account modified forms of mycotoxins, the progress in research related to the health effects of consuming food or feed contaminated with mycotoxins, and also the development of biological methods for limiting and/or eliminating the presence of the same in the food chain and in compound feed.
Collapse
Affiliation(s)
- Marcin Bryła
- Department of Food Safety and Chemical Analysis, Waclaw Dabrowski Institute of Agricultural and Food Biotechnology—State Research Institute, 02-532 Warsaw, Poland
| | - Adam Pierzgalski
- Department of Food Safety and Chemical Analysis, Waclaw Dabrowski Institute of Agricultural and Food Biotechnology—State Research Institute, 02-532 Warsaw, Poland
| | - Agnieszka Zapaśnik
- Department of Microbiology, Waclaw Dabrowski Institute of Agricultural and Food Biotechnology—State Research Institute, Rakowiecka 36, 02-532 Warsaw, Poland
| | - Pascaline Aimee Uwineza
- Department of Chemistry, Poznań University of Life Sciences, Wojska Polskiego 75, 60-625 Poznań, Poland
| | - Edyta Ksieniewicz-Woźniak
- Department of Food Safety and Chemical Analysis, Waclaw Dabrowski Institute of Agricultural and Food Biotechnology—State Research Institute, 02-532 Warsaw, Poland
| | - Marta Modrzewska
- Department of Food Safety and Chemical Analysis, Waclaw Dabrowski Institute of Agricultural and Food Biotechnology—State Research Institute, 02-532 Warsaw, Poland
| | - Agnieszka Waśkiewicz
- Department of Chemistry, Poznań University of Life Sciences, Wojska Polskiego 75, 60-625 Poznań, Poland
- Correspondence: ; Tel.: +48-61-848-78-41
| |
Collapse
|
7
|
Pitarch A, Diéguez-Uribeondo J, Martín-Torrijos L, Sergio F, Blanco G. Fungal signatures of oral disease reflect environmental degradation in a facultative avian scavenger. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 837:155397. [PMID: 35460785 DOI: 10.1016/j.scitotenv.2022.155397] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 04/11/2022] [Accepted: 04/15/2022] [Indexed: 06/14/2023]
Abstract
Degradation of natural ecosystems increases the risk of infections in wildlife due to microbiota dysbiosis. However, little is known about its influence on the development of fungal communities in predators and facultative avian scavengers. We evaluated the incidence of oral disease in wild nestling black kites (Milvus migrans) under contrasting environmental degradation conditions, and explored their oral fungal patterns using molecular methods and multivariate analysis. Oral lesions were found in 36.8% of the 38 nestlings examined in an anthropogenically altered habitat (southeastern Madrid, Spain), but in none of the 105 nestlings examined in a well-conserved natural area (Doñana National Park, Spain). In a subsample of 48 black kites, the composition of the oral fungal community differed among symptomatic nestlings from Madrid (SM) and asymptomatic nestlings from Madrid (AM) and Doñana (AD). Opportunistic fungal pathogens (e.g., Fusarium incarnatum-equiseti species complex, Mucor spp., Rhizopus oryzae) were more prevalent in SM and AM than in AD. Hierarchical clustering and principal component analyses revealed that fungal patterns were distinct between both study areas, and that anthropogenic and natural environmental factors had a greater impact on them than oral disease. Fungal signatures associated with anthropogenic and natural stresses harbored some taxa that could be used to flag oral infection (F. incarnatum-equiseti species complex and Alternaria), indicate environmental degradation (Alternaria) or provide protective benefits in degraded environments (Trichoderma, Epicoccum nigrum and Sordaria). Co-occurrence associations between potentially beneficial and pathogenic fungi were typical of AM and AD, hinting at a possible role in host health. This study shows that early-life exposure to highly degraded environments induces a shift towards a higher prevalence of pathogenic species in the oral cavity of black kites, favoring oral disease. Furthermore, our findings suggest potential ecological applications of the monitoring of oral mycobiome as a bioindication of oral disease and environmental degradation.
Collapse
Affiliation(s)
- Aida Pitarch
- Department of Microbiology and Parasitology, Faculty of Pharmacy, Complutense University of Madrid (UCM) and Ramón y Cajal Institute of Health Research (IRYCIS), Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; Teaching Unit of Microbiology and Parasitology, Faculty of Optics and Optometry, Complutense University of Madrid (UCM), Arcos de Jalón, 118, 28037 Madrid, Spain.
| | | | - Laura Martín-Torrijos
- Department of Mycology, Real Jardín Botánico-CSIC, Plaza Murillo 2, 28014 Madrid, Spain
| | - Fabrizio Sergio
- Department of Conservation Biology, Estacion Biologica de Doñana-CSIC, Americo Vespucio 26, 41092 Sevilla, Spain
| | - Guillermo Blanco
- Department of Evolutionary Ecology, Museo Nacional de Ciencias Naturales-CSIC, José Gutiérrez Abascal 2, 28006 Madrid, Spain
| |
Collapse
|
8
|
The Improved Biocontrol Agent, F1-35, Protects Watermelon against Fusarium Wilt by Triggering Jasmonic Acid and Ethylene Pathways. Microorganisms 2022; 10:microorganisms10091710. [PMID: 36144312 PMCID: PMC9501610 DOI: 10.3390/microorganisms10091710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/20/2022] [Accepted: 08/22/2022] [Indexed: 11/17/2022] Open
Abstract
Watermelon Fusarium wilt, caused by Fusarium oxysporum f. sp. niveum (FON), is one of the most important diseases, and has become a major limiting factor to watermelon production worldwide. Previous research has found that the improved biocontrol agent, F1-35, had a high control efficiency to watermelon Fusarium wilt. In this study, the control efficiency of F1-35 to watermelon Fusarium wilt was firstly tested, and the control efficiency was 61.7%. Then, we investigated the mode of action of F1-35 in controlling watermelon Fusarium wilt. Using a pairing assay, we found that F1-35 did not inhibit the normal growth of FON. To know more about the interaction between F1-35 and watermelon root, the protein expressions of roots after 12, 24, and 48 h post-inoculation were examined. A total of 1109 differentially expressed proteins were obtained. KEGG analysis found that the most differentially expressed proteins occurred in alpha-linolenic acid metabolism, cysteine and methionine metabolism, plant–pathogen interaction, and the MAPK signaling pathway to the plant. A further analysis of differentially expressed proteins showed that F1-35 triggered the jasmonic acid and ethylene pathways in watermelon. To validate our results, the qRT-PCR was used to analyze the gene expression levels of PAL, LOX1, and CTR1. The gene expression results showed that those genes, which were positive correlated with the JA pathway, were up-expressed, including PAL and LOX1, and the negative associated gene, CTR1, was down-expressed. In conclusion, the improved biocontrol agent, F1-35, improves the resistance of watermelons to FON by triggering the JA and ET pathways.
Collapse
|
9
|
Romero-Sánchez I, Ramírez-García L, Gracia-Lor E, Madrid-Albarrán Y. Simultaneous Determination of Aflatoxins B1, B2, G1 and G2 IN Commercial Rices Using Immunoaffinity Column Clean-UP and HPLC-MS/MS. Food Chem 2022; 395:133611. [DOI: 10.1016/j.foodchem.2022.133611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 06/13/2022] [Accepted: 06/28/2022] [Indexed: 11/16/2022]
|
10
|
Biocontrol Agents Reduce Progression and Mycotoxin Production of Fusarium graminearum in Spikelets and Straws of Wheat. Toxins (Basel) 2021; 13:toxins13090597. [PMID: 34564602 PMCID: PMC8470793 DOI: 10.3390/toxins13090597] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/13/2021] [Accepted: 08/25/2021] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to evaluate the interactions between wheat plant (spikelets and straws), a strain of mycotoxigenic pathogen Fusarium graminearum and commercial biocontrol agents (BCAs). The ability of BCAs to colonize plant tissue and inhibit the pathogen or its toxin production was observed throughout two phases of the life cycle of pathogens in natural conditions (colonization and survival). All evaluated BCAs showed effective reduction capacities of pathogenic traits. During establishment and the expansion stage, BCAs provoked an external growth reduction of F. graminearum (77–93% over the whole kinetic studied) and mycotoxin production (98–100% over the whole kinetic studied). Internal growth of pathogen was assessed with digital droplet polymerase chain reaction (ddPCR) and showed a very strong reduction in the colonization of the internal tissues of the spikelet due to the presence of BCAs (98% on average). During the survival stage, BCAs prevented the formation of conservation perithecia of the pathogen on wheat straw (between 88 and 98% of perithecia number reduction) and showed contrasting actions on the ascospores they contain, or perithecia production (−95% on average) during survival form. The mechanisms involved in these different interactions between F. graminearum and BCAs on plant matrices at different stages of the pathogen’s life cycle were based on a reduction of toxins, nutritional and/or spatial competition, or production of anti-microbial compounds.
Collapse
|