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First Reports and Morphological and Molecular Characterization of Pratylenchus delattrei and Quinisulcius capitatus Associated with Chickpea in Ethiopia

Open Access
|Jun 2023

Figures & Tables

Figure 1:

Light microscopy and scanning electron microscopy images of Pratylenchus delattrei. A–C, E–G: Anterior part of the body showing lip and neck region; D: En face view; H: Whole female's body; I–L: Vulva region (L, ventral view); M,N: Lateral fields at mid-body; O–U: Tail region.
Light microscopy and scanning electron microscopy images of Pratylenchus delattrei. A–C, E–G: Anterior part of the body showing lip and neck region; D: En face view; H: Whole female's body; I–L: Vulva region (L, ventral view); M,N: Lateral fields at mid-body; O–U: Tail region.

Figure 2:

Light microscopy images of Quinisulcius capitatus. A–E: Anterior part of the body showing lip and neck regions; F,G: Vulval regions (lateral view); H: Whole female body; J,K: Lateral field showing five distinct incisures; I, L–P: Tail region lateral view.
Light microscopy images of Quinisulcius capitatus. A–E: Anterior part of the body showing lip and neck regions; F,G: Vulval regions (lateral view); H: Whole female body; J,K: Lateral field showing five distinct incisures; I, L–P: Tail region lateral view.

Figure 3:

Bayesian 50% majority rule consensus phylogeny of Pratylenchus delattrei from Ethiopia and related species based on 28S (A) and (B) ITS of rDNA genes and (C) COI of mtDNA using a GTR model. Branch support is indicated with PP. The sequences from this study were marked by blue color and bold font.
Bayesian 50% majority rule consensus phylogeny of Pratylenchus delattrei from Ethiopia and related species based on 28S (A) and (B) ITS of rDNA genes and (C) COI of mtDNA using a GTR model. Branch support is indicated with PP. The sequences from this study were marked by blue color and bold font.

Figure 4:

Bayesian 50% majority rule consensus phylogeny of Quinisulcius capitatus from Ethiopia and related species on 28S (A) and (B) ITS of rDNA genes and (C) COI of mtDNA using a GTR model. Branch support is indicated with PP. The sequences from this study were marked by blue color and bold font.
Bayesian 50% majority rule consensus phylogeny of Quinisulcius capitatus from Ethiopia and related species on 28S (A) and (B) ITS of rDNA genes and (C) COI of mtDNA using a GTR model. Branch support is indicated with PP. The sequences from this study were marked by blue color and bold font.

Comparison of important morphological character and morphometrics of the Ethiopian Quinisulcius capitatus, found from chickpea in Ethiopia, with original description from USA (Allen, 1955), and two other Q_ capitatus from Ethiopia and Canada_ All measurements are in μm and in the form: mean ± s_d_ (range)_

CharacterQ. capitatus from chickpea in Ethiopia (present study)Q. capitatus from pear in USA (Allen, 1955)Q. capitatus from coffee in Ethiopia (Mekete et al., 2008)“Q. capitatus”* from grass in Canada (Munawar et al., 2021)
n10131020
L699 ± 11.6 (667 – 707)630 – 850630 – 790810.3 ± 44.6 (744.0 – 911.0)
a31.2 ± 1.3 (29.7 – 34.4)30 – 3830.9 – 38.641.4 ± 1.8 (38.6 – 43.7)
b5.4 ± 0.2 (5.1 – 5.7)5.0 – 5.85.5 ± 0.3 (5.0 – 6.3)
c14.7 ± 0.7 (14.1 – 16.3)12 – 1715.3 – 17.622.4 ± 1.1 (19.9 – 23.8)
c’1.9 ± 0.2 (1.5 – 2.1)2.6 ± 0.2 (2.2 – 3.2)
V56.6 ± 2.2 (52.7 – 59.0)51 – 5854.7 – 63.657.4 ± 1.5 (53.4 – 59.8)
Stylet length18.8 ± 0.6 (17.8 – 19.7)16 – 1815 – 1818.3 ± 1.0 (15.5 – 20.4)
Lip height4.0 ± 0.5 (3.2 – 4.5)4.0 ± 0.2 (3.7 – 4.4)
Lip width7.6 ± 0.5 (7.0 – 8.3)7.6 ± 0.4 (6.9 – 8.3)
Median bulb length16.1 ± 0.3 (15.7 – 16.6)14.0 ± 1.6 (11.3 – 16.9)
Median bulb width13.1 ± 0.6 (12.2 – 13.9)10.4 ± 1.4 8.4 – 14.2
Pharyngeal length129 ± 5.1 (123 – 138)147.8 ± 5.8 (140.2 – 159.0)
SE pore from anterior end121 ± 3.3 (113 – 123)121128.6 ± 5.3 (121.0 – 139.0)
Midbody diameter22.4 ± 1.0 (20.5 – 23.5)21 – 27
Tail length47.8 ± 3.0 (41.0 – 50.0)35.8 ± 2.4 (31.3 – 40.4)
Anal body diameter25.3 ± 3.2 (23.0 – 34.2)
Phasmid positionMiddle of tailMiddle of tailMiddle of tail

Pratylenchus delattrei and Quinisulcius capitatus recovered from chickpea roots and soil, districts, sampling locality, laboratory codes, altitude, GPS coordinators and GenBank accession numbers_

DistrictsSampling localityCodesSpeciesAltitude (m)Longitude(°)Latitude(°)GenBank accession number

28S–rDNAITS–rDNACOI gene
MinjarKitechaMki-5P. delattrei1600-18008°52′58.16″N39°29′46.01″EOP646170--
Mki-8OP646169--
Mki-12--OP730534
Adea’aGollodhertuAG-1P. delattrei1800-19008°38′55.54″N38°55′0.94″E-OP646171-
AG-2OP646168OP646172-
AG-3OP646167-OP730535
MesekanJolle-2JO2-3Q. capitatus1900-19508°11′49.79″N38°27′51.24″EOP626319OP646173OP627909
JO2-5OP626320OP646174OP627910
JO2-7OP626321OP646175OP627911

Comparison of morphometrics of the Ethiopian Pratylenchus delattrei from chickpea in Ethiopia with the original description from Madagascar (Luc, 1958), and two other P_ delattrei populations from Cape Verde and Iran_ All measurements are in μm and in the form: mean ± s_d_ (range)_

CharacterP. delattrei from chickpea in Ethiopia (present study)P. delattrei from cotton in Madagascar (Luc, 1958)P. delattrei from tomato in Cape Verde (Flis et al., 2018)P. delattrei from vegetables in Iran (Majd Taheri et al., 2013)

Hormozgan 1Hormozgan 2
n101320712
L475 ± 47.1 (410 – 560)390 – 470532 ± 33 (498 – 586)543 ± 55 (467 – 616)508 ± 49.2 (434 – 576)
a25.2 ± 2.2 (22.8 – 29)20.4 – 25.826.6 ± 2.2 (22.1 – 31.3)23.8 ± 2.1 (21.2 – 26.9)22.6 ± 1.0 (21.1 – 25)
b5.6 ± 0.6 (4.8 – 6.6)3.7 – 4.86.6 ± 0.5 (6.1 – 7.7)6.1 ± 0.7 (5.0 – 7.2)5.9 ± 0.6 (5.2 – 6.9)
b’4.7 ± 0.5 (4.1 – 5.6)4.5 ± 0.4 (4.0 – 5.3)4.3 ± 0.2 (4.0 – 4.6)4.1 ± 0.4 (3.6 – 4.9)
c14.6 ± 1.9 (13.7 – 20.3)18 – 22.321.9 ± 2.1 (18.5 – 25.1)20 ± 2 (18.1 – 23.1)19.7 ± 2.6 (16.7 – 24.1)
c’2.3 ± 0.2 (2.0 – 2.8)2.2 ± 0.2 (1.9 – 2.8)2.2 ± 0.3 (1.9 – 2.6)1.9 ± 0.2 (1.6 – 2.2)
V72.2 ± 7.6 (62.4 – 86.9)73 – 8176 ± 1 (75 – 78)75.1 ± 1.9 (71.4 – 77.1)75.9 ± 1.3 (74 – 78.7)
Stylet length16.7 ± 0.7 (15.8 – 17.8)16.5 – 18.016.4 ± 0.4 (15.4 – 16.9)16.3 ± 0.8 (15 – 17)16.0 ± 0.6 (15 – 17)
Dorsal gland opening from stylet base3.0 ± 0.5 (2.3 – 3.5)2.9 ± 0.3 (2.4 – 3.1)
O17.7 ± 2.9 (13.6 – 22.2)17.4 ± 1.7 (14.3 – 21.3)
Pharynx length85 ± 1.0 (82.5 – 85.9)80.1 ± 3.2 (73.1 – 84.2)89 ± 10.4 (76 – 105)87 ± 4 (82 – 94)
Pharyngeal overlap39.0 ± 7.2 (29.8 – 49.0)
Anterior end to end of pharyngeal gland lobe101 ± 1.4 (98 – 102)125 ± 7.3 (116 – 135)123 ± 8.3 (113 – 138)
Maximal body diameter22.7 ± 0.5 (21.6 – 23.1)20.2 ± 2.2 (16.8 – 23.7)23 ± 3.3 (20 – 29)22.5 ± 2.1 (19 – 26)
Anal body diameter13.0 ± 1.2 (10.9 – 14.1)11.2 ± 1.2 (8.9 – 13.2)12.4 ± 1.5 (11 – 14)13 ± 0.9 (12 – 14)
Tail length29.0 ± 0.9 (27.5 – 30.1)24.8 ± 2.3 (21.0 – 27.1)26.6 ± 2.3 (23 – 29)24.8 ± 2.3 (23 – 29)
Tail annuli20 ± 2 (18 – 23)19 ± 2 (16 – 24)20 ± 2.1 (18 – 23)19 ± 1.5 (17 – 21)
Phasmid to terminus14.1 ± 0.4 (13.5 – 14.5)10.6 ± 2.7 (6.0 – 14.9)
DOI: https://doi.org/10.2478/jofnem-2023-0027 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X
Language: English
Submitted on: Jan 27, 2023
Published on: Jun 11, 2023
Published by: Society of Nematologists, Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2023 Habtamu Kefelegn, Beira Hailu Meressa, Sunheng Yon, Marjolein Couvreur, Wim M. L. Wesemael, Misghina G. Teklu, Wim Bert, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.