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Journal of Nematology
Volume 51 (2019): Numero 1 (January 2019)
Accesso libero
A COI DNA barcoding survey of
Pratylenchus
species in the Great Plains Region of North America
Mehmet Ozbayrak
Mehmet Ozbayrak
,
Tim Todd
Tim Todd
,
Timothy Harris
Timothy Harris
,
Rebecca Higgins
Rebecca Higgins
,
Kirsten Powers
Kirsten Powers
,
Peter Mullin
Peter Mullin
,
Lisa Sutton
Lisa Sutton
e
Thomas Powers
Thomas Powers
| 10 dic 2019
Journal of Nematology
Volume 51 (2019): Numero 1 (January 2019)
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Article Category:
Arts & Humanities
Pubblicato online:
10 dic 2019
Pagine:
1 - 21
Ricevuto:
24 mag 2019
DOI:
https://doi.org/10.21307/jofnem-2019-081
© 2019 Mehmet Ozbayrak et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Figure 1:
Distribution of sampling sites by county for the Pratylenchus survey.
Figure 2:
Bayesian tree of unique COI haplotypes derived from 915 Pratylenchus specimen data set. Nodes are labeled according to tree building approach, with bootstrap values indicated in green for neighbor-joining, blue for maximum-likelihood, and red for posterior probability in Bayesian analysis. The absence of a value reflects the absence of that node, or bootstrap values below 50 in a particular tree building approach. Terminal nodes are labeled by Nematode Identification Numbers (NIDs) and taxon name.
Figure 3:
Maximum likelihood tree of haplotype groups reflecting group membership support based on consensus tree topology, and species delimitation methods. These methods are indicated by colored bars: Automatic Barcoding Gap Discovery (ABGD) green bar, Generalized Mixed Yule Coalescent (GMYC) red bar, and statistical parsimony analysis (TCS) blue bar. TCS groups marked with an asterisk indicate a merging of two groups at a 90% connection limit.
Figure 4:
Bayesian evolutionary analysis by sampling trees (BEAST) analysis of estimated divergence times using the mitochondrial substitution genome rate of 7.2 ×10−8 per site per generation, a calibration originally calculated for the nematode Caenorhabditis briggsae (Howe et al., 2010). The rate assumes two Pratylenchus generations per year. Divergence age confidence intervals of 95% are provided at nodes.
Figure 5:
Matrix exhibiting Pratylenchus species of the Great Plains and their host associations. The number of fields with a specific plant host-Pratylenchus species combination is indicated by the number within the green circles.
Figure 6:
TCS networks depicting Pratylenchus neglectus haplotype abundance and relationships among haplotypes. Dashed lines encircling haplotypes indicate 95% connection limits. Hash marks between haplotypes indicate number of mutational steps between haplotypes. Relative size of the circles reflects abundance of specimens exhibiting that specific haplotype. (A) Colors indicate geographic origin of the haplotypes in the Pratylenchus survey; (B) colors indicate the host in the field at time of the survey.
Figure 7:
TCS network at 95% connection limit depicting Pratylenchus scribneri haplotype abundance and relationships among haplotypes. Hash marks between haplotypes indicate number of mutational steps between haplotypes. Relative size of the circles reflects abundance of specimens exhibiting that specific haplotype. (A) Colors indicate geographic origin of the haplotypes in the Pratylenchus survey; (B) colors indicate the host in the field at time of the survey.
Figure 8:
TCS networks depicting (A) the single haplotype of Pratylenchus thornei and (B) the two networks exhibited by Pratylenchus hexincisus. Dashed lines encircling haplotypes indicate 95% connection limits. Hash marks between haplotypes indicate number of mutational steps between haplotypes. Relative size of the circles reflects abundance of specimens exhibiting that specific haplotype. Colors indicate geographic origin of the haplotypes in the Pratylenchus survey.
Figure 9:
County location of surveyed fields with Pratylenchus neglectus (red), P. scribneri (blue), and fields with a mixture of both species (gray).
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