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Tomar P, Thakur N, Singh S, Kumar S, Rustagi S, Rai AK, Shreaz S, Yadav N, Rai PK, Yadav AN. Soil inhabiting bacto-helmith complex in insect pest management: Current research and future challenges. Heliyon 2024; 10:e36365. [PMID: 39253146 PMCID: PMC11381765 DOI: 10.1016/j.heliyon.2024.e36365] [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: 11/04/2023] [Revised: 08/14/2024] [Accepted: 08/14/2024] [Indexed: 09/11/2024] Open
Abstract
Pesticides have health consequences for humans, living organisms, and ecosystems. Research on biological management, with a primary focus on entomopathogens, has been accelerated by the rise in issues such as pesticide residue, soil degradation, and pest resistance. Entomopathogenic nematodes (EPNs) are among the most frequently used and commercialised biopesticides. However, they are restricted in their infectivity, persistence, storage, and cost of production. The nematodes, along with their endosymbiotic bacteria, combine to form a nemato-bacterial complex. This complex is responsible for causing mortality in insect pests due to the production of insecticidal compounds. The adaptation of EPNs is an eco-friendly method, economical, and safer for the environment as well as non-target organisms. Moreover, it's a better alternative to synthetic chemical pesticides, as it can be helpful in overcoming pest resistance and resurgence issues. Application of nematode juveniles is a cost-effective method, but the necessity of refrigeration and transportation may enhance their cost. This review emphasised the diversity of entomopathogenic nematodes and their endosymbiotic bacteria, the exploration of the biocontrol potential of insect pests by under-utilisation of nematodes, the development of nematode-based formulations, and the discussion of critical issues and required research in the future.
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Affiliation(s)
- Preety Tomar
- Department of Zoology, Akal College of Basic Sciences, Eternal University, Baru Sahib, Sirmour-173101, Himachal Pradesh, India
| | - Neelam Thakur
- Department of Zoology, Akal College of Basic Sciences, Eternal University, Baru Sahib, Sirmour-173101, Himachal Pradesh, India
| | - Sangram Singh
- Department of Biochemistry, Dr. Ram Manohar Lohia Avadh University, Ayodhya, Uttar Pradesh, India
| | - Sanjeev Kumar
- Faculty of Agricultural Sciences, GLA University, Mathura, Uttar Pradesh, India
| | - Sarvesh Rustagi
- Depratment of Food Technology, School of Applied and Life Sciences, Uttaranchal University, Dehradun, Uttarakhand, India
| | - Ashutosh Kumar Rai
- Department of Biochemistry, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Kingdom of Saudi Arabia
| | - Sheikh Shreaz
- Desert Agriculture and Ecosystem Department, Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, P. O. Box 24885, 13109, Safat, Kuwait
| | - Neelam Yadav
- Centre of Research Impact and Outcome, Chitkara University, Rajpura-140401, Punjab, India
- Chitkara Center for Research and Development, Chitkara University, Himachal Pradesh-174103, India
| | - Pankaj Kumar Rai
- Department of Biotechnology, Invertis University, Bareilly, Uttar Pradesh, India
| | - Ajar Nath Yadav
- Department of Genetics, Plant Breeding and Biotechnology, Dr. Khem Singh Gill Akal College of Agriculture, Eternal University, Baru Sahib, Sirmaur-173101, Himachal Pradesh, India
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Janardhan HN, Askary TH, Bhat AH, Rana A, Ahad I, Al-Qahtani WH. Morphological and molecular profiling of an entomopathogenic nematode Steinernema feltiae: Unlocking its biocontrol potential against vegetable insect pests. Zootaxa 2023; 5351:202-220. [PMID: 38221492 DOI: 10.11646/zootaxa.5351.2.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Indexed: 01/16/2024]
Abstract
A population of entomopathogenic nematodes, belonging to the Feltiae-clade and labelled J13, was discovered in the agricultural soils of the hilly regions of the Union territory of Jammu and Kashmir, India. Based on morphological, morphometric, and molecular analyses, the nematodes were identified as Steinernema feltiae. The J13 nematode isolate was tested in a laboratory assay for its pathogenicity against six major pests of vegetable crops: Pieris brassicae, Plutella xylostella, Helicoverpa armigera, Agrotis iplison, Trichoplusia ni, and Exelastis atomosa. The morphology of the isolated nematode closely matched the original description, except for the adult females, which had prominent epiptygmata instead of the weakly developed, double-flapped epiptygmata described in the original report. Analysis of the internal transcribed spacer and large subunit rRNA data from the J13 nematodes showed 100% similarity to sequences of the type population, indicating that they are conspecific. The virulence assays revealed that the nematode caused 100% mortality in the tested insect pests within 4872 hours, even at the lowest concentration of 50 infective juveniles per insect. The calculated median lethal concentration varied among the pests, with the lowest number of infective juveniles needed to achieve 50% larval killing being 117 for P. xylostella, 181.74 for P. brassicae, 226.35 for H. armigera, and 202.07 for T. ni at 24 hours post-inoculation. These findings suggest that S. feltiae isolated during the present investigation, may be a viable option for the biocontrol of these insect pests in Kashmir valley, India.
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Affiliation(s)
- Hiriyannanahalli Narayanaswamy Janardhan
- Division of Entomology; Faculty of Agriculture; Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir; Wadura; Sopore -193201; Jammu and Kashmir; India.
| | - Tarique Hassan Askary
- Division of Entomology; Faculty of Agriculture; Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir; Wadura; Sopore -193201; Jammu and Kashmir; India.
| | - Aashaq Hussain Bhat
- Department of Bioscience; University Center for Research & Development (UCRD); Chandigarh University; Mohali 140413; Punjab; India; Experiemtal Biology Research Group; Institute of Biology; Faculty of Science; University of Neuchatel; Rue Emile-Argland 2000; Neuchatel; Switzerland.
| | - Aasha Rana
- Department of Zoology; Faculty of Basic and Applied Sciences; Madhav University; Pindwara (Sirohi); Rajasthan; 307026; India.
| | - Ishtiyaq Ahad
- Division of Entomology; Faculty of Agriculture; Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir; Wadura; Sopore -193201; Jammu and Kashmir; India.
| | - Wahidah H Al-Qahtani
- Department of Food Sciences and Nutrition; College of Food & Agriculture Sciences; King Saud University; Riyadh 11451; Saudi Arabia.
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Nthenga I, Knoetze R, Malan AP. Distribution and diversity of entomopathogenic nematodes (Steinernematidae and Heterorhabditidae) in a South African nature reserve. KOEDOE: AFRICAN PROTECTED AREA CONSERVATION AND SCIENCE 2021. [DOI: 10.4102/koedoe.v63i1.1661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Yooyangket T, Muangpat P, Polseela R, Tandhavanant S, Thanwisai A, Vitta A. Identification of entomopathogenic nematodes and symbiotic bacteria from Nam Nao National Park in Thailand and larvicidal activity of symbiotic bacteria against Aedes aegypti and Aedes albopictus. PLoS One 2018; 13:e0195681. [PMID: 29641570 PMCID: PMC5895068 DOI: 10.1371/journal.pone.0195681] [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: 10/19/2017] [Accepted: 03/27/2018] [Indexed: 11/30/2022] Open
Abstract
Entomopathogenic nematodes (EPNs) that are symbiotically associated with Xenorhabdus and Photorhabdus bacteria can kill target insects via direct infection and toxin action. There are limited reports identifying such organisms in the National Park of Thailand. Therefore, the objectives of this study were to identify EPNs and symbiotic bacteria from Nam Nao National Park, Phetchabun Province, Thailand and to evaluate the larvicidal activity of bacteria against Aedes aegypti and Ae. albopictus. A total of 12 EPN isolates belonging to Steinernema and Heterorhabditis were obtained form 940 soil samples between February 2014 and July 2016. EPNs were molecularly identified as S. websteri (10 isolates) and H. baujardi (2 isolates). Symbiotic bacteria were isolated from EPNs and molecularly identified as P. luminescens subsp. akhurstii (13 isolates), X. stockiae (11 isolates), X. vietnamensis (2 isolates) and X. japonica (1 isolate). For the bioassay, bacterial suspensions were evaluated for toxicity against third to early fourth instar larvae of Aedes spp. The larvae of both Aedes species were orally susceptible to symbiotic bacteria. The highest larval mortality of Ae. aegypti was 99% after exposure to X. stockiae (bNN112.3_TH) at 96 h, and the highest mortality of Ae. albopictus was 98% after exposure to P. luminescens subsp. akhurstii (bNN121.4_TH) at 96 h. In contrast to the control groups (Escherichia coli and distilled water), the mortality rate of both mosquito larvae ranged between 0 and 7% at 72 h. Here, we report the first observation of X. vietnamensis in Thailand. Additionally, we report the first observation of P. luminescens subsp. akhurstii associated with H. baujardi in Thailand. X. stockiae has potential to be a biocontrol agent for mosquitoes. This investigation provides a survey of the basic diversity of EPNs and symbiotic bacteria in the National Park of Thailand, and it is a bacterial resource for further studies of bioactive compounds.
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Affiliation(s)
- Temsiri Yooyangket
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Paramaporn Muangpat
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Raxsina Polseela
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
- Centre of Excellence in Medical Biotechnology (CEMB), Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Sarunporn Tandhavanant
- Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Aunchalee Thanwisai
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
- Centre of Excellence in Medical Biotechnology (CEMB), Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Apichat Vitta
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
- Centre of Excellence in Medical Biotechnology (CEMB), Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
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Abate BA, Slippers B, Wingfield MJ, Malan AP, Hurley BP. Diversity of entomopathogenic nematodes and their symbiotic bacteria in south African plantations and indigenous forests. NEMATOLOGY 2018. [DOI: 10.1163/15685411-00003144] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Summary
The occurrence and diversity of entomopathogenic nematodes (EPN) and their symbiotic bacteria was evaluated in commercial forestry plantations (Eucalyptus spp., Pinus spp. and Acacia mearnsii) and indigenous forests in South Africa. EPN were most prevalent in A. mearnsii plantations, accounting for 60.7% of the isolates, while indigenous forests, plantations of Pinus spp. and Eucalyptus spp. accounted for 35.7, 3.6 and 0% of the isolates, respectively. DNA sequences of the internal transcribed spacer (ITS) and D2-D3 28S rDNA regions were used to identify the nematode species. Four Steinernema spp. were identified, including S. citrae, S. sacchari, two undescribed species, as well as Heterorhabditis bacteriophora and H. baujardi. Heterorhabditis baujardi is reported from South Africa for the first time. Analysis of 16S rRNA of the bacteria confirmed the presence of at least three Xenorhabdus species from Steinernema isolates and two subspecies of Photorhabdus luminescens from Heterorhabditis species.
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Affiliation(s)
- Birhan A. Abate
- 1Department of Zoology and Entomology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0002, South Africa
- 2Ethiopian Biotechnology Institute (EBTi), Agricultural Biotechnology Directorate, P.O. Box. 5954, Addis Ababa, Ethiopia
| | - Bernard Slippers
- 3Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0002, South Africa
| | - Michael J. Wingfield
- 1Department of Zoology and Entomology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0002, South Africa
| | - Antoinette P. Malan
- 4Department of Conservation Ecology and Entomology, Department of AgriSciences, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Brett P. Hurley
- 1Department of Zoology and Entomology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0002, South Africa
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Cimen H, Půža V, NermuŤ J, Hatting J, Ramakuwela T, Hazir S. Steinernema biddulphi n. sp., a New Entomopathogenic Nematode (Nematoda: Steinernematidae) from South Africa. J Nematol 2016; 48:148-158. [PMID: 27765988 DOI: 10.21307/jofnem-2017-022] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
A new species of entomopathogenic nematode (EPN), Steinernema biddulphi n. sp., was isolated from a maize field in Senekal, Free State Province of South Africa. Morphological and molecular studies indicated the distinctness of S. biddulphi n. sp. from other Steinernema species. Steinernema biddulphi n. sp. is characterized IJs with average body length of 663 μm (606-778 μm), lateral fields with six ridges in mid-body region forming the formula 2,6,2. Excretory pore located anterior to mid-pharynx (D% = 46). Hyaline layer occupies approximately half of tail length. Male spicules slightly to moderately curved, with a sharp tip and golden brown in color. The first generation of males lacking a mucron on the tail tip while the second generation males with a short filamentous mucron. Genital papillae with 11 pairs and one unpaired preanal papilla. The new species is further characterized by sequences of the internal transcribed spacer (ITS) and partial 28S regions (D2-D3) of the ribosomal DNA (rDNA). Phylogenetic data show that S. biddulphi n. sp. belongs to the "bicornutum" clade within the Steinernematidae family.
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Affiliation(s)
- Harun Cimen
- Department of Biology, Faculty of Arts and Science, Adnan Menderes University, 09010 Aydin, Turkey
| | - Vladimír Půža
- Laboratory of Entomopathogenic Nematodes, Institute of Entomology, Biology Centre, Czech Academy of Sciences, Branišovská 31, 370 05, České Budějovice, The Czech Republic
| | - JiŘí NermuŤ
- Laboratory of Entomopathogenic Nematodes, Institute of Entomology, Biology Centre, Czech Academy of Sciences, Branišovská 31, 370 05, České Budějovice, The Czech Republic
| | - Justin Hatting
- South African Agricultural Research Council, Small Grain Institute, Private Bag X29, Bethlehem, 9701, South Africa
| | - Tshima Ramakuwela
- South African Agricultural Research Council, Small Grain Institute, Private Bag X29, Bethlehem, 9701, South Africa
| | - Selcuk Hazir
- Department of Biology, Faculty of Arts and Science, Adnan Menderes University, 09010 Aydin, Turkey
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