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Meloidogyne spp. in Eucalypts - Reproduction and Damage to Seedling Growth

José Olívio Lopes Vieira
José Olívio Lopes Vieira
, 
Renata Cunha Pereira
Renata Cunha Pereira
, 
Mariana Zandomênico Mangeiro
Mariana Zandomênico Mangeiro
 and 
Ricardo Moreira Souza
Ricardo Moreira Souza
   | Jan 23, 2024
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Article Category: Research Paper
Published Online: Jan 23, 2024
Page range: -
Received: May 11, 2023
DOI: https://doi.org/10.2478/jofnem-2023-0059
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© 2023 José Olívio Lopes Vieira et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1:

Effect of Meloidogyne enterolobii, M. incognita, and M. javanica on root system volume, mass, and length of Eucalyptus grandis seedlings grown in a greenhouse for six months. Values are the mean of 10 seedlings per nematode species. “*” denotes a significant difference relative to the control according to the Mann–Whitney test at 5% significance.
Effect of Meloidogyne enterolobii, M. incognita, and M. javanica on root system volume, mass, and length of Eucalyptus grandis seedlings grown in a greenhouse for six months. Values are the mean of 10 seedlings per nematode species. “*” denotes a significant difference relative to the control according to the Mann–Whitney test at 5% significance.

Figure 2:

Effect of Meloidogyne enterolobii, M. incognita, and M. javanica on root system length and volume of eucalypt seedlings grown in a greenhouse for six months. A) Eucalyptus saligna. B, C) hybrid E. grandis × E. urophylla. Values are the means of 10 seedlings per eucalypt species or hybrid, per nematode species. “*” denotes a significant difference relative to the control according to the Mann-Whitney test at 5% significance.
Effect of Meloidogyne enterolobii, M. incognita, and M. javanica on root system length and volume of eucalypt seedlings grown in a greenhouse for six months. A) Eucalyptus saligna. B, C) hybrid E. grandis × E. urophylla. Values are the means of 10 seedlings per eucalypt species or hybrid, per nematode species. “*” denotes a significant difference relative to the control according to the Mann-Whitney test at 5% significance.

Supplementary Figure 1:

A) Eucalypt seedlings cultivated in a greenhouse for assessment of host status to and damage by Meloidogyne incognita, M. javanica, and M. enterolobii. B) Corymbia citriodora. C) Eucalyptus saligna. D) Hybrid E. grandis × E. urophylla. E) E. grandis. F) E. dunni. G) E. cloeziana. H) E. camaldulensis.
A) Eucalypt seedlings cultivated in a greenhouse for assessment of host status to and damage by Meloidogyne incognita, M. javanica, and M. enterolobii. B) Corymbia citriodora. C) Eucalyptus saligna. D) Hybrid E. grandis × E. urophylla. E) E. grandis. F) E. dunni. G) E. cloeziana. H) E. camaldulensis.

Reproduction factor and host status of Eucalyptus spp. and Corymbia citriodora to Meloidogyne enterolobii, M. incognita, and M. javanica, after cultivation in greenhouse for six months

Species M. enterolobii M. incognita M. javanica
E. camaldulensis 0.22a (R)b 0.52 (R) 1.04 (S)
E. cloeziana 0.60 (R) 0.46 (R) 0.62 (R)
E. dunni 0.50 (R) 0.82 (R) 0.74 (R)
E. grandis 0.38 (R) 0.62 (R) 0.42 (R)
E. saligna 0.94 (R) 4.82 (S) 3.44 (S)
E. grandis × E. urophylla 1.72 (S) 0.48 (R) 2.46 (S)
C. citriodora 0.94 (R) 0.90 (R) 0.54 (R)

Mean ± error of shoot height (SH), stem diameter (SD), dry mass of leaves (ML), root-system mass (RSM), root system volume (RSV), and root-system length (RSL) of seedlings of Eucalyptus spp. and Corymbia citriodora when inoculated with Meloidogyne enterolobii, M. incognita or M. javanica, and cultivated in a greenhouse for six months.

Treatments SH (cm) SD (mm) ML (g) RSM (g) RSV (cm3) RSL (cm)
Eucalyptus camaldulensis
Meloidogyne enterolobii 37.40 ± 0.72a 3.38 ± 0.10 0.76 ± 0.10 3.06 ± 0.44 4.0 ± 0.25 21.4 ± 0.78
Meloidogyne incognita 37.20 ± 0.79 3.62 ± 0.12 0.89 ± 0.11 2.99 ± 0.24 2.9 ± 0.37 21.2 ± 0.84
Meloidogyne javanica 34.50 ± 0.57 3.52 ± 0.11 0.89 ± 0.11 3.32 ± 0.31 2.8 ± 0.55 20.20 ± 0.42
Control 39.01 ± 0.88 3.39 ± 0.10 0.92 ± 0.14 3.06 ± 0.23 4.2 ± 0.41 21.4 ± 0.55
Corymbia citriodora
Meloidogyne enterolobii 33.30 ± 0.53 3.01 ± 0.07 0.81 ± 0.07 4.23 ± 0.15 4.0 ± 0.33 20.0 ± 0.59
Meloidogyne incognita 34.06 ± 0.42 3.03 ± 0.09 0.70 ± 0.11 2.53 ± 0.17 3.8 ± 0.35 20.5 ± 0.22
Meloidogyne javanica 30.60 ± 0.69 2.90 ± 0.08 0.69 ± 0.06 4.13 ± 0.19 3.1 ± 0.31 20.0 ± 0.47
Control 33.33 ± 0.53 3.26 ± 0.08 0.81 ± 0.07 4.15 ± 0.14 4.5 ± 0.34 20.9 ± 0.48
Eucalyptus cloeziana
Meloidogyne enterolobii 28.61 ± 0.93 3.26 ± 0.08 1.00 ± 0.14 2.98 ± 0.12 3.6 ± 0.55 18.8 ± 0.28
Meloidogyne incognita 27.90 ± 0.97 3.30 ± 0.11 1.10 ± 0.26 3.26 ± 0.22 3.4 ± 0.39 19.2 ± 0.38
Meloidogyne javanica 28.70 ± 0.97 3.25 ± 0.12 1.07 ± 0.14 4.98 ± 0.13 4.9 ± 0.50 18.8 ± 0.32
Control 32.50 ± 1.00 3.48 ± 0.09 1.26 ± 0.12 4.38 ± 0.14 3.8 ± 0.47 19.2 ± 0.24
Eucalyptus dunni
Meloidogyne enterolobii 38.51 ± 0.76 4.18 ± 0.14 1.2 ± 0.16 2.72 ± 0.42 3.6 ± 0.38 18.8 ± 0.23
Meloidogyne incognita 37.17 ± 0.84 4.24 ± 0.12 0.96 ± 0.15 3.45 ± 0.47 3.2 ± 0.39 20.3 ± 0.38
Meloidogyne javanica 41.00 ± 0.81 4.27 ± 0.13 1.0 ± 0.11 3.07 ± 0.49 3.0 ± 0.51 18.8 ± 0.33
Control 41.20 ± 0.70 4.12 ± 0.12 1.23 ± 0.11 4.99 ± 0.44 4.6 ± 0.39 19.7 ± 0.39
Eucalyptus grandis
Meloidogyne enterolobii 34.28 ± 0.78 3.44 ± 0.13 0.48 ± 0.07 2.89 ± 0.37* 2.50 ± 0.40* 19.3 ± 0.49*
Meloidogyne incognita 36.78 ± 0.69 3.81 ± 0.10 0.83 ± 0.09 4.96 ± 0.64 3.40 ± 0.43* 20.0 ± 0.29*
Meloidogyne javanica 36.56 ± 0.78 3.97 ± 0.11 0.45 ± 0.05 3.08 ± 0.45* 2.60 ± 0.39* 19.8 ± 0.39*
Control 36.52 ± 0.92 3.84 ± 0.12 0.60 ± 0.07 5.14 ± 0.78 4.40 ± 0.49 21.5 ± 0.41
Eucalyptus saligna
Meloidogyne enterolobii 24.13 ± 0.62 3.75 ± 0.11 1.3 ± 0.16 4.86 ± 0.94 2.3 ± 0.61 19.0 ± 0.63*
Meloidogyne incognita 24.18 ± 0.65 3.82 ± 0.11 1.37 ± 0.13 7.87 ± 1.23 3.9 ± 0.76 20.8 ± 0.45*
Meloidogyne javanica 24.85 ± 0.59 3.49 ± 0.10 1.05 ± 0.14 5.73 ± 1.13 2.4 ± 0.57 20.3 ± 0.61*
Control 27.52 ± 0.54 3.58 ± 0.53 1.25 ± 0.15 6.74 ± 1.08 3.1 ± 0.49 22.5 ± 0.67
Eucalyptus grandis × Eucalyptus urophylla
Meloidogyne enterolobii 20.30 ± 0.89 3.60 ± 0.10 1.06 ± 0.09 3.43 ± 0.5 1.20 ± 0.13* 20.3 ± 1.01*
Meloidogyne incognita 20.60 ± 0.59 3.75 ± 0.10 1.07 ± 0.17 2.41 ± 0.44 1.30 ± 0.15* 20.6 ± 0.63*
Meloidogyne javanica 24.26 ± 0.58 4.19 ± 0.27 1.32 ± 0.15 3.16 ± 0.46 1.30 ± 0.19* 24.2 ± 0.53
Control 27.67 ± 0.84 3.54 ± 0.42 1.19 ± 0.16 3.74 ± 0.39 2.01 ± 0.20 24.0 ± 0.66
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