Geospatial relationships between native entomopathogenic nematodes and Fusarium solani in a Florida citrus orchard

Wu, Sheng‐Yen; El-Borai, Fahiem E.; Graham, J. H.; Duncan, Larry W.

doi:10.1016/j.apsoil.2019.04.009

Cited by 10 publications

(7 citation statements)

References 28 publications

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“…The soil-dwelling infective juveniles are exposed to contacts with many organisms that share the same biotope, including bacteria, fungi and other nematodes. These organisms may reduce the EPN populations by food and territorial competency, or by their negative impact on EPN survival [ 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Biological Activity of Field Isolates of Steinernema feltiae with a Commercial S. feltiae Biopesticide Product

Matuska-Łyżwa

Żarnowiec

Kaca

2021

Insects

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Insect trap studies were carried out to determine the presence of entomopathogenic nematodes (EPN) from the family Steinernematidae in the soils of Poland and to compare the biological activities of field nematode isolates with nematodes from commercial biopesticide. The fauna of these organisms in central Poland is poorly studied in both taxonomic and biological terms. Tilled soils representative of this region were sampled from cultivated fields. EPN were isolated from soil samples under laboratory conditions and identified using a key for species identification and molecular analysis. Basic morphometric parameters of infective juveniles and adult males of the first generation were determined. The research showed that males and infective juveniles Steinernema feltiae from Łoniów were the largest. The smallest infective juveniles were found in the isolate from Oblasy, and the smallest males in the isolate from Danków. In Poland, new field isolates showed close genetic similarity to other S. feltiae isolates. The research showed that the field isolates from Poland had greater infectivity and rate of reproduction compared with nematodes from the commercial biopesticide. The findings indicate the potential use of field S. feltiae isolates from Poland (iso1Lon, iso1Dan and iso1Obl) to develop new biopesticide products.

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Section: Introductionmentioning

confidence: 99%

Comparison of Biological Activity of Field Isolates of Steinernema feltiae with a Commercial S. feltiae Biopesticide Product

Matuska-Łyżwa

Żarnowiec

Kaca

2021

Insects

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“…For instance, there was no previous single-tube assay that could detect Meloidogyne fallax, M. chitwoodi, and/or M. minor in a sample, but advanced molecular techniques can reliably do this from crude PPN extracts [86]. Interestingly, PCR-based technology also indicated a highly significant spatial distribution link between Fusarium solani (a plant pathogen) and polyspecific EPN (biocontrol agents of insect and PPN pests) communities in a 6-month citrus grove survey [87]. Likewise, ecological factors should be included when exploring novel strategies for PPN control and IPM, especially on key crops.…”

Section: Harnessing Biotechnology To Comply With Ecological and Biolo...mentioning

confidence: 99%

Upgrading Strategies for Managing Nematode Pests on Profitable Crops

Abd-Elgawad

2024

Plants

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Plant-parasitic nematodes (PPNs) reduce the high profitability of many crops and degrade their quantitative and qualitative yields globally. Traditional nematicides and other nematode control methods are being used against PPNs. However, stakeholders are searching for more sustainable and effective alternatives with limited side effects on the environment and mankind to face increased food demand, unfavorable climate change, and using unhealthy nematicides. This review focuses on upgrading the pre-procedures of PPN control as well as novel measures for their effective and durable management strategies on economically important crops. Sound and effective sampling, extraction, identification, and counting methods of PPNs and their related microorganisms, in addition to perfecting designation of nematode–host susceptibility/resistance, form the bases for these strategies. Therefore, their related frontiers should be expanded to synthesize innovative integrated solutions for these strategies. The latter involve supplanting unsafe nematicides with a new generation of safe and reliable chemical nematicidal and bionematicidal alternatives. For better efficacy, nematicidal materials and techniques should be further developed via computer-aided nematicide design. Bioinformatics devices can reinforce the potential of safe and effective biocontrol agents (BCAs) and their active components. They can delineate the interactions of bionematicides with their targeted PPN species and tackle complex diseases. Also, the functional plan of nematicides based on a blueprint of the intended goals should be further explored. Such goals can currently engage succinate dehydrogenase, acetylcholinesterase, and chitin deacetylase. Nonetheless, other biochemical compounds as novel targets for nematicides should be earnestly sought. Commonly used nematicides should be further tested for synergistic or additive function and be optimized via novel sequential, dual-purpose, and co-application of agricultural inputs, especially in integrated pest management schemes. Future directions and research priorities should address this novelty. Meanwhile, emerging bioactivated nematicides that offer reliability and nematode selectivity should be advanced for their favorable large-scale synthesis. Recent technological means should intervene to prevail over nematicide-related limitations. Nanoencapsulation can challenge production costs, effectiveness, and manufacturing defects of some nematicides. Recent progress in studying molecular plant–nematode interaction mechanisms can be further exploited for novel PPN control given related topics such as interfering RNA techniques, RNA-Seq in BCA development, and targeted genome editing. A few recent materials/techniques for control of PPNs in durable agroecosystems via decision support tools and decision support systems are addressed. The capability and effectiveness of nematicide operation harmony should be optimized via employing proper cooperative mechanisms among all partners.

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“…Gorny et al [ 34 ] manipulated two indices to set sound sampling protocols and determined specific sites for nematicide usage. Moreover, Wu et al [ 23 ] used SADIE to prove regulation of EPNs by a natural enemy. Therefore, the use of such indices to enhance biocontrol potential or to save costs in nematicidal applications is ideally compatible with IPM.…”

Section: Indices Of Nematode Dispersionmentioning

confidence: 99%

“…These molecular tools were integrated with appropriate models, e.g., indices of dispersion, in order to: (1) clarify soil food webs that modulate the rates of a herbivore-disease complex [ 37 ], (2) prove regulation of EPNs by a natural enemy where manipulating a soil property (pH) can enhance biocontrol of an insect pest [ 4 ], and (3) examine geospatial relationships between native EPN and the fungus Fusarium solani in citrus habitats [ 23 ]. Such gains can enable us to better conceptualize biological control potential of pests and pathogens within sound IPM context.…”

Section: Molecular Vs Traditional Sampling and Extraction Technologymentioning

confidence: 99%

Optimizing Sampling and Extraction Methods for Plant-Parasitic and Entomopathogenic Nematodes

Abd-Elgawad¹

2021

Plants

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Plant-parasitic and entomopathogenic nematodes (PPNs and EPNs) are key groups in crop production systems. This study aims at optimizing nematode sampling and extraction methods to benefit integrated pest management (IPM) through (a) management of PPNs and (b) use of EPNs. The impacts of these methods on PPNs and EPNs to achieve cost-effective and efficient IPM programs are presented. The common misuses of sampling and extraction methods are discussed. Professionals engaged in IPM should consider sampling the reliability level in the light of the intended goal, location, crop value, susceptibility, nematode species, and available funds. Logical sampling methodology should be expanded to integrate various factors that can recover extra EPN isolates with differential pathogenicity. It should seek for the best EPN-host matching. Merits of repeated baiting for EPN extraction from soil and sieving for PPN recovery from suspensions are presented. Their extraction values may be modelled to quantify the efficiency of nematode separation. The use of proper indices of dispersion to enhance the biocontrol potential of EPNs or save costs in nematicidal applications is ideally compatible with IPM programs. Selecting an extraction method may sometimes require further tests to find the best extraction method of the existing fauna and/or flora. Cons and pros of modern sampling and extraction techniques are highlighted.

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Geospatial relationships between native entomopathogenic nematodes and Fusarium solani in a Florida citrus orchard

Cited by 10 publications

References 28 publications

Comparison of Biological Activity of Field Isolates of Steinernema feltiae with a Commercial S. feltiae Biopesticide Product

Comparison of Biological Activity of Field Isolates of Steinernema feltiae with a Commercial S. feltiae Biopesticide Product

Upgrading Strategies for Managing Nematode Pests on Profitable Crops

Optimizing Sampling and Extraction Methods for Plant-Parasitic and Entomopathogenic Nematodes

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