Biological Control of Root-Knot Nematodes (Meloidogyne spp.): Microbes against the Pests / BIOTIČNO ZATIRANJE OGORČIC KORENINSKIH ŠIŠK (Meloidogyne spp.): MIKROORGANIZMI PROTI ŠKODLJIVCEM

Lamovšek, Janja; Urek, Gregor; Trdan, S.

doi:10.2478/acas-2013-0022

Cited by 43 publications

(5 citation statements)

References 35 publications

(44 reference statements)

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“…Biological seed treatments have mixed efficacy for nematode management ( Musil, 2016 ; Abdel-Salam et al, 2018 ; Ghahremani et al, 2020 ). There are several contributing factors, but one of the most important is viability of soil environments ( Lamovšek et al, 2013 ). Soil environments that inhibit establishment of the biological components reduce or nullify the effects of the seed treatment, resulting in little to no nematode control.…”

Section: Discussionmentioning

confidence: 99%

Seed Treatments for Management of Soybean Cyst Nematode, Heterodera glycines, in Mid-Atlantic Soybean Production

Kessler,

Koehler

2023

Journal of Nematology

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Soybean Cyst Nematode (SCN), Heterodera glycines Ichinohe, is the most important pathogen of soybean in the Mid-Atlantic region. In recent decades, a decline in the effectiveness of genetic resistance has been observed and additional management approaches are needed. Seed treatments are of rising interest, but no local data on product response exists for the region. In 2020–2021, two experiments were conducted to observe the effects of chemical and biological seed treatment options. In one experiment, chemical seed treatments pydiflumetofen (Saltro®) and fluopyram (ILEVO®) were screened against nontreated plain seed for SCN suppression. In a second experiment, pydiflumetofen, fluopyram and four biological nematode-protectant seed treatments with a standard base insecticide and fungicide treatment were compared to nontreated plain seed and seed with only the standard base treatment to test product efficacy against SCN. Seed treatments increased the percent emergence over plain seed. Nematode reproductive factors and female counts from roots were collected, but did not statistically differ between seed treatments or plain seed. Yield differences were observed in one of the five trials, where pydiflumetofen + base seed treatment yielded the highest (p < 0.001) at 3813.1 kg/ha. Response from seed treatments varied, with no specific seed treatment consistently reducing SCN populations or increasing yield across trials. Seed treatments may have potential as an element of an integrated management approach for SCN.

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Section: Discussionmentioning

confidence: 99%

Seed Treatments for Management of Soybean Cyst Nematode, Heterodera glycines, in Mid-Atlantic Soybean Production

Kessler,

Koehler

2023

Journal of Nematology

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“…Current progress for sustainable agriculture produced quite a number of PPN-biocontrol commercial products (Lamovšek et al, 2013;Abd-Elgawad and Askary, 2018). Among them, Nemaless is produced and recommended by the Egyptian Ministry of Agriculture against nematode pests especially RKNs (Anonymous, 2012).…”

Section: Calculating the Thresholdsmentioning

confidence: 99%

The Damage and Gain Threshold of Meloidogyne arenaria on Faba Bean Favors the Use of a Safe Biological Control Over Chemical Nematicides

Hammam¹,

Mohamed²,

Abd-Elgawad³

2023

PJN

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Root-knot nematodes (RKNs, Meloidogyne spp.) cause major agricultural losses worldwide. Some chemical nematicides are effective, but health and ecological issues are confronting their use. Biological nematicides are safe and promising alternatives. The present study examines M. arenaria damage on faba bean and presents effective control methods as Egypt is the world's largest importer of faba bean. Using gain thresholds, the study compares costs of a biological versus a chemical nematicide for M. arenaria control on faba bean. Meloidogyne arenaria was not detected at pre-planting soil samples of two consecutive field seasons. However, the potential of field weeds as hosts/reservoirs for M. arenaria to transfer from weeds and build-up on 'Giza 843' faba bean roots was apparent at harvest. Significant relations were established between the M. arenaria population levels at harvest and weights of faba bean pods. Consequently, the gain thresholds were calculated based on the combined costs of nematode sampling and control. Their calculated values demonstrated more costs in applying the chemical (oxamyl) than the biological (Nemaless, bacterial strains of Serratia marcescens) nematicide; that is, the gain threshold was 0.78 versus 0.57 metric tons of pods feddan −1 (= 4200 m −2 ), respectively. This comparison should serve as a favorable, forward-looking assessment for the economic and safe application of biological pest control. Applying the chemical (oxamyl) or biological (Nemaless) nematicide is justified for M. arenaria control but Nemaless is less costly. Growers should be familiar with these biologicals to boost their use while offering economic and safe control of the nematodes. Cultural practices such as weed control should be strictly utilized for RKN control.

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“…Particularly, certain strains of rhizosphere bacteria such as Bacillus , Pseudomonas , Pasteuria , Serratia and Burkholderia have been reported to play a crucial role in controlling RKN through their nematicidal and plant growth-promoting properties ( Collange et al., 2011 ; Mhatre et al., 2019 ; Ahmad et al., 2021 ). They have been reported to effectively suppress RKN by directly paralyzing, killing and inhibiting J2 hatching through their toxic metabolite and enzyme production capabilities, in addition to having indirect suppressing abilities through the induction of systemic plant resistance ( Siddiqui and Mahmood, 1999 ; Tian et al., 2007 ; Lamovšek et al., 2013 ). However, despite continuous research and notable success in laboratory studies of bacterial nematicides, their mechanisms in field conditions remain poorly understood; hence, extensive research, particularly on novel nematicidal strains with high field adaptability and activity in the rhizosphere, remains necessary and crucial for the development of sustainable RKN control strategies.…”

Section: Introductionmentioning

confidence: 99%

Assessment of nematicidal and plant growth-promoting effects of Burkholderia sp. JB-2 in root-knot nematode-infested soil

et al. 2023

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Root-knot nematodes (RKN), Meloidogyne spp., are plant-parasitic nematodes that are responsible for considerable economic losses worldwide, because of the damage they cause to numerous plant species and the inadequate biological agents available to combat them. Therefore, developing novel and eco-friendly nematicides is necessary. In the present study, Burkholderia sp. JB-2, isolated from RKN-infested rhizosphere soil in South Korea, was evaluated to determine its nematicidal and plant growth-promoting effects under in vitro and in vivo conditions. Cell-free filtrates of the JB-2 strain showed high levels of nematicidal activity against second-stage juveniles (J2) of M. incognita, with 87.5% mortality following two days of treatment. In addition, the assessment of the activity against other six plant parasitic nematodes (M. javanica, M. hapla, M. arenaria, Ditylenchus destructor, Aphelenchoides subtenuis, and Heterodera trifolii) showed that the cell-free filtrates have a broad nematicidal spectrum. The three defense-responsive (MiMIF-2, MiDaf16-like1, and MiSkn1-like1) genes were activated, while Mi-cm-3 was downregulated when treated with cell-free filtrates of JB-2 cultures on J2. The greenhouse experiments suggested that the cell-free filtrates of the JB-2 strain efficiently controlled the nematode population in soil and egg mass formations of M. incognita in tomato (Solanum lycopersicum L., cv. Rutgers). An improvement in the host plant growth was observed, in which the shoot length and fresh weights of shoots and roots increased. The treatment with 10% of JB-2 cell-free filtrates significantly upregulated the expression levels of plant defenses (SlPR1, SlPR5, and SlPAL) and growth-promoting (ACO1, Exp18, and SlIAA1) genes compared with the corresponding parameters of the control group. Therefore, JB-2 could be a promising candidate for the sustainable management of RKN.

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Biological Control of Root-Knot Nematodes (Meloidogyne spp.): Microbes against the Pests / BIOTIČNO ZATIRANJE OGORČIC KORENINSKIH ŠIŠK (Meloidogyne spp.): MIKROORGANIZMI PROTI ŠKODLJIVCEM

Cited by 43 publications

References 35 publications

Seed Treatments for Management of Soybean Cyst Nematode, Heterodera glycines, in Mid-Atlantic Soybean Production

Seed Treatments for Management of Soybean Cyst Nematode, Heterodera glycines, in Mid-Atlantic Soybean Production

The Damage and Gain Threshold of Meloidogyne arenaria on Faba Bean Favors the Use of a Safe Biological Control Over Chemical Nematicides

Assessment of nematicidal and plant growth-promoting effects of Burkholderia sp. JB-2 in root-knot nematode-infested soil

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