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Potential of nicotinamide adenine dinucleotide (NAD) for management of root-knot nematode in tomato

Homan Regmi
Homan Regmi
, 
Noor Abdelsamad
Noor Abdelsamad
, 
Peter DiGennaro
Peter DiGennaro
 e 
Johan Desaeger
Johan Desaeger
   | 11 nov 2021
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Pubblicato online: 11 nov 2021
Pagine: 1 - 11
DOI: https://doi.org/10.21307/jofnem-2021-094
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© 2021 Homan Regmi et al., published by Sciendo.
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1:

Effect of 1mM Nicotinamide adenine dinucleotide (NAD) applied as a pre-, post- or pre+post- plant drench application on plant height of tomato (Solanum lycopersicon L.) cv. HM1823 in the greenhouse; pre = NAD treatment 1 day before transplanting; post = NAD treatment 1 day after transplanting; pre+post = NAD treatment 1 day before and 1 day after transplanting; DAT = days after transplanting. Factor levels sharing the same letter within each time point do not differ significantly (P-value > 0.05), according to Tukey’s HSD.
Effect of 1mM Nicotinamide adenine dinucleotide (NAD) applied as a pre-, post- or pre+post- plant drench application on plant height of tomato (Solanum lycopersicon L.) cv. HM1823 in the greenhouse; pre = NAD treatment 1 day before transplanting; post = NAD treatment 1 day after transplanting; pre+post = NAD treatment 1 day before and 1 day after transplanting; DAT = days after transplanting. Factor levels sharing the same letter within each time point do not differ significantly (P-value > 0.05), according to Tukey’s HSD.

Figure 2:

Effect of Nicotinamide adenine dinucleotide (NAD) on soil root-knot nematode, Meloidogne incognita population in fumigated and non-fumigated beds, field trial, fall, 2020. Factor levels sharing the same letter do not differ significantly (P-value > 0.05), according to Tukey’s HSD.
Effect of Nicotinamide adenine dinucleotide (NAD) on soil root-knot nematode, Meloidogne incognita population in fumigated and non-fumigated beds, field trial, fall, 2020. Factor levels sharing the same letter do not differ significantly (P-value > 0.05), according to Tukey’s HSD.

Figure 3:

Effect of Nicotinamide adenine dinucleotide (NAD) on early tomato (Solanum lycopersicon L.) fruit production at 77 DAT in fumigated and non-fumigated beds; field trial spring 2020; DAT = days after transplanting. Factor levels sharing the same letter do not differ significantly (P-value > 0.05), according to Tukey’s HSD.
Effect of Nicotinamide adenine dinucleotide (NAD) on early tomato (Solanum lycopersicon L.) fruit production at 77 DAT in fumigated and non-fumigated beds; field trial spring 2020; DAT = days after transplanting. Factor levels sharing the same letter do not differ significantly (P-value > 0.05), according to Tukey’s HSD.

Effect of 1mM Nicotinamide adenine dinucleotide (NAD) on root-knot nematode, Meloidogne incognita severity and plant biomass of tomato (Solanum lycopersicon L.) cultivar HM 1823 in the greenhouse, Gulf Coast Research and Education Center (GCREC), Feb–May, 2019.

Gall rating (0–10) Eggs/g root Dry root weight Dry shoot weight
Treatments 60 DAT 105 DAT 60 DAT 105 DAT 60 DAT 105 DAT 60 DAT 105 DAT Total fruit yield (kg)
Control 4.0a 8.3a 54688a 291536a 3.76a 4.41a 26.12a 54.21a 1.29a
Pre + Post 2.9b 7.2b 27393b 269600a 4.00a 4.88a 28.99a 53.83a 1.28a
Post 3.3b 8.1a 41353a 276340a 3.70a 5.21a 27.89a 60.48a 1.26a
Pre 3.4b 8.0a 45705a 278300a 4.33a 4.67a 28.40a 57.96a 1.25a
P-value 0.0021 0.0001 0.007 0.89 0.214 0.833 0.230 0.507 0.986

Root gall ratings of tomato (Solanum lycopersicon L.), root-knot nematode, Meloidogne incognita population in soil, and tomato fruit yield as affected by fumigants and Nicotinamide adenine dinucleotide (NAD), field trial-spring 2020, Gulf Coast Research and Education Center (GCREC), FL.

Root-knot severity (0–10 scale) J2s/200 cc soil Tomato Yield (kg/plot)
Factors Level 69 DAT 105 DAT 105 DAT 77 DAT 94 DAT 103 DAT Total yield
None 3.23a 5.77a 60a 16.96b 12.86a 5.13a 34.96b
Fumigant Pic 100 1.65b 5.34a 82a 22.92b 13.78a 5.44a 42.15a
Pic-Clor 60 0.08c 0.53b 7b 21.67a 12.44a 6.23a 40.35ab
None 1.16a 4.16a 46a 19.76a 12.43a 7.06a 39.26a
NAD 1mM 1.89a 3.27a 49a 20.06a 13.40a 5.54a 39.20a
5 mM 1.91a 4.22a 55a 21.73a 13.26a 4.20a 39.01a
Fumigant <.0001 <.0001 0.0005 0.005 0.796 0.763 0.106
P-value NAD 0.290 0.535 0.423 0.459 0.875 0.201 0.996
Fumigant*NAD 0.824 0.678 0.366 0.105 0.500 0.738 0.322

Effect of Nicotinamide adenine dinucleotide (NAD) on root-knot nematode, Meloidogne incognita infection and plant growth on tomato (Solanum lycopersicon L.) cultivar HM 1823 in growth room experiment, Sep-Dec, 2018.

NAD treatments J2 penetration (2 DAI) Gall rating (0-10) (30 DAI) Egg mass/g root (30 DAI) Shoot weight (g) (30 DAI) Root Weight (g) (30 DAI)
Control 85a 3.3ab 159a 3.93c 0.74bcd
1 mM Pre 41d 3.1abc 88c 4.74a 0.86a
0.1 mM Pre 61bc 2.8bc 77c 4.38abc 0.80abcd
0.01 mM Pre 74ab 3.6a 98c 4.11bc 0.70d
1mM Pre + Post 47cd 2.9bc 129b 4.85a 0.81abc
0.1 mM Pre + Post 73ab 2.7bc 100bc 4.15bc 0.73cd
0.01 mM Pre + Post 45cd 3.4ab 104bc 4.35abc 0.81abc
1 mM Post 48cd 2.6c 96c 4.56ab 0.83ab
P-value <.0001 0.026 0.0003 0.0071 0.03

Root gall ratings of tomato (Solanum lycopersicon L.), root-knot nematode, Meloidogne incognita population in soil, and tomato fruit yield as affected by fumigants and Nicotinamide adenine dinucleotide (NAD), field trial-fall 2020, Gulf Coast Research and Education Center (GCREC), FL.

Root-knot severity (0–10 scale) J2s/200 cc soil Tomato Yield (kg/plot)
Fumigant NAD 53 DAT 97 DAT 97 DAT 68 DAT 82 DAT 96 DAT Total yield
None 3.28a 5.24a 361a 1.56c 5.99b 9.90a 17.46b
Fumigant Pic 100 0.26b 0.46b 15b 5.51b 10.53a 11.06a 27.11a
Pic-Clor 60 0.06b 0.15b 8b 8.79a 8.51ab 12.45a 29.76a
None 1.04a 2.04a 217a 5.06a 8.53a 12.13a 25.74a
NAD 5 mM 1.51a 2.20a 133a 5.14a 7.47a 10.65a 23.27a
10 mM 1.06a 1.62a 35a 5.66a 9.03a 10.63a 25.32a
Fumigants <.0001 <.0001 <.0001 <.0001 0.024 0.160 <.0001
P-value NAD 0.474 0.409 0.591 0.763 0.569 0.412 0.393
Fumigants*NAD 0.275 0.213 0.060 0.824 0.798 0.254 0.758
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