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Host Status of Ornamental Shade Trees and Shrubs to Plant Parasitic Nematodes Cover

Host Status of Ornamental Shade Trees and Shrubs to Plant Parasitic Nematodes

Journal of Nematology
Volume 56 (2024): Issue 1 (March 2024)
By: ,   and    
Open Access
|Jun 2024
Figures & tables

Figures & Tables

Table 1.

Meloidogyne incognita, M. hapla, and Pratylenchus penetrans densities in soil and roots of ornamental tree and shrub.

Host plantNumber of nematodes recovered from soilNumber of eggs recovered from rootsNumber of nematodes recovered from roots
M. incognitaM. haplaP. neglectusM. incognitaM. haplaP. neglectus
Acer campestre35,640 ± 425 ba17 ± 371 a8,360 ± 222 b49,595 ± 869 bc5628 ± 122 a4,050 ± 373 c
Thuja occidentalis11,528 ± 141 a30 ± 38 a20,592 ± 627 bc485 ± 109 a6,409 ± 70 a113 ± 15 ab
Buxus sempervirens13,904 ± 119 ab11 ± 222 a0 ± 0 a3,094 ± 354 b1,935 ± 37 a81 ± 21 a
Quercus alba59,576 ± 868 b24 ± 383 a15,004 ± 360 bc132 ± 14 a5,938 ± 98 a821 ± 126 b
Quercus garryana30,008 ± 362,3 ab24 ± 383 a9,856 ± 312 bc108 ± 14 a1,660 ± 22 a80 ± 13 a
Rhododendron catawbiense23,584 ± 213 ab13 ± 150 a3,344 ± 450 b3,864 ± 334 b1,311 ± 16 a71 ± 12 d
Controlb799,128 ± 8,126 c561 ± 4,689 b149,547 ± 18,878 d32,048 ± 319 c77,391 ± 659 b445,350 ± 25,049 d

a Data are presented as a mean ± standard error of 10 replications. Data were analyzed with the Kruskal-Wallis test with a post hoc test of Duncan at a 5% significance level. Values followed by different letters within a column indicate a statistical difference.

b Tomato for Meloidogyne spp. and wheat for P. neglectus.

Table 2.

Final Meloidogyne incognita, M. hapla, and Pratylenchus penetrans densities and reproductive factor (RF)a values in ornamental trees and shrubs.

Host plantFinal population densityRFa
M. incognitaM. haplaP. neglectusM. incognitaM. haplaP. neglectus
Acer campestre85,235 ± 118 bb22,524 ± 492 a12,410 ± 214 c28 ± 4 b8 ± 2 a5 ± 9 cd
Thuja occidentalis12,013 ± 104 a36,945 ± 485 a20,705 ± 627 ab4 ± 5 a12 ± 16 a8 ± 3 d
Buxus sempervirens16,998 ± 105 ab13,375 ± 259 a81 ± 211 a6 ± 4 ab5 ± 9 a0 ± 0 a
Quercus alba59,708 ± 869 b30,226 ± 480 a15,825 ± 357 bc20 ± 3 b10 ± 16 a6 ± 1 cd
Quercus garryana30,116 ± 362 ab11,614 ± 175 a9,926 ± 311 ab10 ± 1 ab4 ± 6 a4 ± 1 bcd
Rhododendron catawbiense27,448 ± 231 ab14,335 ± 166 a3,415 ± 45 b10 ± 8 ab5 ± 6 a1 ± 18 bc
Controlc831,176 ± 8,044 c638,805 ± 5,291 b594,897 ± 3,696 d277 ± 27 c213 ± 176 b238 ± 148 e

a RF = final population density/initial population density.

b Data are presented as a mean + standard error of 10 replications. Data were analyzed with the Kruskal-Wallis test with a post hoc test of Duncan at a 5% significance level. Values followed by different letters within a column indicate a statistical difference.

c Tomato for Meloidogyne spp. and wheat for P. neglectus.

Table 3.

Host suitability of trees and shrubs seedlings for Meloidogyne incognita, M. hapla, and Pratylenchus penetrans.

Host plantHost suitabilitya
M. incognitaM. haplaP. neglectus
Acer campestreSSMS
Thuja occidentalisMSSS
Buxus sempervirensSMSR
Quercus albaSSS
Quercus garryanaSMSMS
Rhododendron catawbienseSMSMS
ControlbSSS

a Host suitability was categorized as good [susceptible; S] when final population density (Pf)/initial population density (Pi) > 5.0, fair [moderately susceptible; MS] if 5.0 ≥ Pf/Pi > 1, poor [moderately resistant; MR] if 1 > Pf/Pi > 0, and non-host [resistant; R] when Pf/Pi = 0 (Zhang and Schmitt, 1994).

b Tomato for Meloidogyne spp. and wheat for P. neglectus.

Figure 1.

Meloidogyne incognita galls on Acer campestre roots.

DOI: https://doi.org/10.2478/jofnem-2024-0024 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X
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Language: English
Submitted on: Dec 7, 2023
Published on: Jun 28, 2024
Published by: Society of Nematologists, Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year
Keywords:
host-parasitic relationship,
ornamental tree,
shrubs,
root-knot nematodes,
Meloidogyne incognita,
Meloidogune hapla,
root lesion nematode,
Pratylenchus neglectus
Related subjects:
Life sciences,
Life sciences, other

© 2024 T. Benedetti, J. E. Weiland, I. A. Zasada, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 56 (2024): Issue 1 (March 2024)
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