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


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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).

Character Q. 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)
n 10 13 10 20
L 699 ± 11.6 (667 – 707) 630 – 850 630 – 790 810.3 ± 44.6 (744.0 – 911.0)
a 31.2 ± 1.3 (29.7 – 34.4) 30 – 38 30.9 – 38.6 41.4 ± 1.8 (38.6 – 43.7)
b 5.4 ± 0.2 (5.1 – 5.7) 5.0 – 5.8 5.5 ± 0.3 (5.0 – 6.3)
c 14.7 ± 0.7 (14.1 – 16.3) 12 – 17 15.3 – 17.6 22.4 ± 1.1 (19.9 – 23.8)
c’ 1.9 ± 0.2 (1.5 – 2.1) 2.6 ± 0.2 (2.2 – 3.2)
V 56.6 ± 2.2 (52.7 – 59.0) 51 – 58 54.7 – 63.6 57.4 ± 1.5 (53.4 – 59.8)
Stylet length 18.8 ± 0.6 (17.8 – 19.7) 16 – 18 15 – 18 18.3 ± 1.0 (15.5 – 20.4)
Lip height 4.0 ± 0.5 (3.2 – 4.5) 4.0 ± 0.2 (3.7 – 4.4)
Lip width 7.6 ± 0.5 (7.0 – 8.3) 7.6 ± 0.4 (6.9 – 8.3)
Median bulb length 16.1 ± 0.3 (15.7 – 16.6) 14.0 ± 1.6 (11.3 – 16.9)
Median bulb width 13.1 ± 0.6 (12.2 – 13.9) 10.4 ± 1.4 8.4 – 14.2
Pharyngeal length 129 ± 5.1 (123 – 138) 147.8 ± 5.8 (140.2 – 159.0)
SE pore from anterior end 121 ± 3.3 (113 – 123) 121 128.6 ± 5.3 (121.0 – 139.0)
Midbody diameter 22.4 ± 1.0 (20.5 – 23.5) 21 – 27
Tail length 47.8 ± 3.0 (41.0 – 50.0) 35.8 ± 2.4 (31.3 – 40.4)
Anal body diameter 25.3 ± 3.2 (23.0 – 34.2)
Phasmid position Middle of tail Middle of tail Middle 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.

Districts Sampling locality Codes Species Altitude (m) Longitude(°) Latitude(°) GenBank accession number

28S–rDNA ITS–rDNA COI gene
Minjar Kitecha Mki-5 P. delattrei 1600-1800 8°52′58.16″N 39°29′46.01″E OP646170 - -
Mki-8 OP646169 - -
Mki-12 - - OP730534
Adea’a Gollodhertu AG-1 P. delattrei 1800-1900 8°38′55.54″N 38°55′0.94″E - OP646171 -
AG-2 OP646168 OP646172 -
AG-3 OP646167 - OP730535
Mesekan Jolle-2 JO2-3 Q. capitatus 1900-1950 8°11′49.79″N 38°27′51.24″E OP626319 OP646173 OP627909
JO2-5 OP626320 OP646174 OP627910
JO2-7 OP626321 OP646175 OP627911

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).

Character P. 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 1 Hormozgan 2
n 10 13 20 7 12
L 475 ± 47.1 (410 – 560) 390 – 470 532 ± 33 (498 – 586) 543 ± 55 (467 – 616) 508 ± 49.2 (434 – 576)
a 25.2 ± 2.2 (22.8 – 29) 20.4 – 25.8 26.6 ± 2.2 (22.1 – 31.3) 23.8 ± 2.1 (21.2 – 26.9) 22.6 ± 1.0 (21.1 – 25)
b 5.6 ± 0.6 (4.8 – 6.6) 3.7 – 4.8 6.6 ± 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)
c 14.6 ± 1.9 (13.7 – 20.3) 18 – 22.3 21.9 ± 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)
V 72.2 ± 7.6 (62.4 – 86.9) 73 – 81 76 ± 1 (75 – 78) 75.1 ± 1.9 (71.4 – 77.1) 75.9 ± 1.3 (74 – 78.7)
Stylet length 16.7 ± 0.7 (15.8 – 17.8) 16.5 – 18.0 16.4 ± 0.4 (15.4 – 16.9) 16.3 ± 0.8 (15 – 17) 16.0 ± 0.6 (15 – 17)
Dorsal gland opening from stylet base 3.0 ± 0.5 (2.3 – 3.5) 2.9 ± 0.3 (2.4 – 3.1)
O 17.7 ± 2.9 (13.6 – 22.2) 17.4 ± 1.7 (14.3 – 21.3)
Pharynx length 85 ± 1.0 (82.5 – 85.9) 80.1 ± 3.2 (73.1 – 84.2) 89 ± 10.4 (76 – 105) 87 ± 4 (82 – 94)
Pharyngeal overlap 39.0 ± 7.2 (29.8 – 49.0)
Anterior end to end of pharyngeal gland lobe 101 ± 1.4 (98 – 102) 125 ± 7.3 (116 – 135) 123 ± 8.3 (113 – 138)
Maximal body diameter 22.7 ± 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 diameter 13.0 ± 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 length 29.0 ± 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 annuli 20 ± 2 (18 – 23) 19 ± 2 (16 – 24) 20 ± 2.1 (18 – 23) 19 ± 1.5 (17 – 21)
Phasmid to terminus 14.1 ± 0.4 (13.5 – 14.5) 10.6 ± 2.7 (6.0 – 14.9)
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2640-396X
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Angielski
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Life Sciences, other