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123 results for “Steinernema”
FIGURE 6 in Morphological and molecular profiling of an entomopathogenic nematode Steinernema feltiae: Unlocking its biocontrol potential against vegetable insect pests
FIGURE 6. Maximum-likelihood phylogenetic tree between Steinernema feltiae and other species of Steinernema in the Feltiae-group based on nucleotide sequences of the D2–D3 expansion segments of large subunit (28S) of rRNA flanked by primers D2F and 536. Numbers at nodes represent bootstrap values based on 100 replications. Bars represent average nucleotide substitutions per sequence position. NCBI accession numbers of the nucleotide sequences used for the analyses are shown next to the species names. The scale bar shows the number of substitutions per site.
FIGURE 4 in Morphological and molecular profiling of an entomopathogenic nematode Steinernema feltiae: Unlocking its biocontrol potential against vegetable insect pests
FIGURE 4. Steinernema feltiae (light microscopy). A–C: First-generation female; A: Neck region (arrow pointing excretory pore); B: Vulva region; C: Posterior end (arrow pointing mucron). D,E: First-generation male; D: Neck region (arrow pointing excretory pore); E: Posterior end showing spicules and gubernaculum (arrow pointing mucron). F,G: Second-generation male; F: Neck region (arrow pointing excretory pore); G: Posterior end showing spicules and gubernaculum (arrow pointing mucron). H–J: Second-generation female; H: Neck region (arrow pointing excretory pore); I: Vulva region; J: Posterior end (arrow pointing mucron).
FIGURE 2 in Morphological and molecular profiling of an entomopathogenic nematode Steinernema feltiae: Unlocking its biocontrol potential against vegetable insect pests
FIGURE 2. Steinernema feltiae (line). A–D: First-generation female; A: Neck region; B: Posterior end; C: Vulva region; D: Whole female. E,G–K: Second-generation female; E: Whole female; G: Neck region; H–J: Posterior region showing variation in tail region; K: Vulva region. F: Whole infective juvenile.
FIGURE 3 in Morphological and molecular profiling of an entomopathogenic nematode Steinernema feltiae: Unlocking its biocontrol potential against vegetable insect pests
FIGURE 3. Steinernema feltiae (line). A–C: First-generation male; A: Whole male; B–C: Posterior region showing variations in spicule morphology. D,E: Second-generation male; D: Whole male; E: Posterior region.
FIGURE 7 in Morphological and molecular profiling of an entomopathogenic nematode Steinernema feltiae: Unlocking its biocontrol potential against vegetable insect pests
FIGURE 7. Median lethal concentration (LC50) of Steinernema feltiae in the larvae of different insect pests at different time intervals and at different nematode concentrations, respectively.
Fig. 1 in Virulence of two entomopathogenic nematode species, Steinernema sp. (strain PQ16) and Heterorhabditis indica (strain KT3987), to nymphs of the coffee cicada Dundubia nagarasingna
Fig. 1. Mortality of coffee cicada nymphs, Dundubia nagarasingna, treated with entomopathogenic nematodes, Steinernema sp. (strain PQ16) and Heterorhabditis indica (strain KT3987), at inoculation doses of 100, 200, 300, 400, 500 and 600 infective juveniles (IJ) nymph−1 at A: 24 h, B: 48 h, C: 72 h after inoculation. Values are means ± SE; different letters in each figure represent means that are statistically different between nematode concentrations (Tukey's HSDtest, P <0.05). Thecorrectedcumulative mortality axis indicates nymphal mortality increasing with IJ inoculation doses and exposure time. Mortality data were corrected by Abbott's formula (Abbott, 1925).
Fig. 4 in Virulence of two entomopathogenic nematode species, Steinernema sp. (strain PQ16) and Heterorhabditis indica (strain KT3987), to nymphs of the coffee cicada Dundubia nagarasingna
Fig. 4. Number of infective juveniles (IJ) (250 ml soil)−1 at the treatment dose of 40 × 103 and 60 × 103 IJ pot−1 10, 20 and 30 days after treatment. A: S-PQ16 strain, B: H-KT3987 strain. Letters indicate significant differences among interval times in each (lower case andupper case) IJdose (one-way ANOVA, P <0.05). Pair-treatmentcomparisonbetweeninitialinoculationsisrepresentedwithlines above thecolumns (Student's t -test, *P <0.05, **P <0.01, ***P <0.001, ns: not significant). Valuesaremeans ± SE.
Fig. 3 in Virulence of two entomopathogenic nematode species, Steinernema sp. (strain PQ16) and Heterorhabditis indica (strain KT3987), to nymphs of the coffee cicada Dundubia nagarasingna
Fig. 3. Efficacy of entomopathogenic nematodes, Steinernema sp. (strain PQ16) and Heterorhabditis indica (strain KT3987), to coffee cicada nymphs at doses of 40 × 103 and 60 × 103 infective juveniles (IJ) pot−1 after 10, 20 and 30 DAT. A: S-PQ16 strain; B: H-KT3987 strain. Different letters indicate significant differences among interval times in each nematode concentration (One-way ANOVA, P <0.05). Comparisonbetweentwotreateddosesisrepresentedwithlinesabovethecolumns (Student's t -test, *P <0.05, **P <0.01, ***P <0.001, ns: notsignificant). Valuesaremeans ± SE.
Fig. 2 in Virulence of two entomopathogenic nematode species, Steinernema sp. (strain PQ16) and Heterorhabditis indica (strain KT3987), to nymphs of the coffee cicada Dundubia nagarasingna
Fig. 2. Reproduction yields of entomopathogenic nematodes, Steinernema sp. (strain PQ16) and Heterorhabditis indica (strain KT3987), in coffee cicada nymphs. Values are means ± SE; different letters at the tops of the bars represent means that are statistically differentamong EPNconcentrations (Tukey's HSDtest, P <0.05).
FIGURE 5 in Steinernema apuliae sp. n. (Rhabditida: Steinernematidae): a new entomopathogenic nematode from southern Italy
FIGURE 5. Map of collecting sites. Solid circles are the sites where S. apuliae was found.
Figure 1 in A draft genome of a field-collected Steinernema feltiae strain NW
Figure 1: Genome alignment of strains SN and NW. Only top 100 longest scaffolds from SN (laid across the x-axis) and top 100 longest contigs from NW (y-axis) were shown here to minimize noise. Each contig/scaffold is shown between two lines (vertical for SN and horizontal for NW) along the axes. A colored dot is plotted wherever the two sequences agree; the forward matches are shown in purple, while the reverse matches are shown in blue. If the two genomes were perfectly identical, a series of purple dots would be drawn diagonally.
Figure 8 in Basic laboratory and field manual for conducting research with the entomopathogenic nematodes, Steinernema and Heterorhabditis, and their bacterial symbionts
Figure 8. Scanning electron microscopy images of Steinernema beitlechemi male. A, B: First generation male. A: Tail with paired genital papillae (numbered), single papilla (s) and post-deirid (arrow), dorso-lateral; B: Spicules with rounded tip, ventro-lateral. C–E: Secondgeneration male. C: Tail with paired genital papillae (numbered), single papilla (s) and postdeirid (arrow), lateral; D: Postdeirid, detail; E: Tail with part of paired genital papillae (numbered), single papilla (s) and mucron (m), ventro-lateral.
Figure 9 in Basic laboratory and field manual for conducting research with the entomopathogenic nematodes, Steinernema and Heterorhabditis, and their bacterial symbionts
Figure 9. Light microscopy (LM) images of infective juvenile, male and female of Steinernema biddulphi. A, C. First generation female. A. Tail region. C. Vulval region. B, D. Second generation female. B. Tail region. D. Vulval region. E. First generation male, tail with spicules and gubernaculum. F. Second generation male, tail with spicules and gubernaculum. G, H. Infective juvenile. G. Anterior portion showing rounded head and excretory pore (arrow). H. Tail with anus and hyaline region.
FIGURE 1 in Morphological and molecular profiling of an entomopathogenic nematode Steinernema feltiae: Unlocking its biocontrol potential against vegetable insect pests
FIGURE 1. Map showing soil sampling sites for isolation of entomopathogenic nematodes.
Steinernema carpocapsae Breton small RNA sequencing insect in vitro simulation system, from "The genome, transcriptome, and proteome of the nematode Steinernema carpocapsae: evolutionary signatures of
GEO Series GSE85256. Steinernema carpocapsae. 6 samples. Type: Non-coding RNA profiling by high throughput sequencing.
Transcriptomic analysis of Steinernema nematodes highlights metabolic costs associated to Xenorhabdus endosymbiont association and rearing conditions
GEO Series GSE185177. Steinernema puntauvense; Steinernema carpocapsae. 6 samples. Type: Expression profiling by high throughput sequencing.
Comparative transcriptomics of Steinernema and Caenorhabditis single embryos reveals gene expression divergence during early embryogenesis
GEO Series GSE86381. Steinernema carpocapsae; Caenorhabditis elegans; Steinernema feltiae; Caenorhabditis angaria. 175 samples. Type: Expression profiling by high throughput sequencing.
A core set of venom proteins are secreted by entomopathogenic nematodes in the genus Steinernema
GEO Series GSE119223. Steinernema feltiae. 27 samples. Type: Expression profiling by high throughput sequencing.
Hybrid assembly of the genome of the entomopathogenic nematode Steinernema carpocapsae identifies the X-chromosome.
GEO Series GSE127823. Steinernema carpocapsae. 33 samples. Type: Expression profiling by high throughput sequencing.
Figure 11 in Basic laboratory and field manual for conducting research with the entomopathogenic nematodes, Steinernema and Heterorhabditis, and their bacterial symbionts
Figure 11. Enumeration of nematodes in Petri dishes.
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