Nesidiocoris tenuis, Macrolophus pygmaeus (Hemiptera: Miridae) and (Z)‑3‑hexenyl propanoate induce systemic resistance against the root‑knot nematode Meloidogyne spp. in tomatoes
The management of Meloidogyne spp. in tomato crops presents significant challenges for sustainable agriculture. This study evaluates the potential of Nesidiocoris tenuis, Macrolophus pygmaeus, and (Z)-3-hexenyl propanoate—two zoophytophagous mirid species and one of the herbivore-induced plant...
| Autores principales: | , , , , , |
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| Formato: | article |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2025
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/20.500.11939/9038 https://link.springer.com/article/10.1007/s10526-025-10305-5 |
| Sumario: | The management of Meloidogyne spp. in
tomato crops presents significant challenges for sustainable
agriculture. This study evaluates the potential
of Nesidiocoris tenuis, Macrolophus pygmaeus,
and (Z)-3-hexenyl propanoate—two zoophytophagous
mirid species and one of the herbivore-induced
plant volatiles (HIPVs) they trigger—to induce systemic
resistance against Meloidogyne incognita and
M. javanica in tomato plants (cv. Bodar). To this
end, we assess the expression of the PIN2 and PR1
genes, related to the jasmonic acid (JA) and salicylic
acid (SA) pathways, respectively. Exposure of
tomato plants to 15 nymphs of either N. tenuis or M.
pygmaeus for 24 or 48 h, and to (Z)-3-hexenyl propanoate
for 24 h, before inoculation with 200 secondstage
juveniles of the nematodes significantly reduced
nematode infectivity and reproduction. Notably, PIN2
gene expression in leaves was upregulated nine- and
14-fold by N. tenuis and M. pygmaeus, respectively,
zero days after nematode inoculation (DANI) and was
repressed by the nematode seven DANI with a ninefold
decrease, but not when the plants were exposed
to M. pygmaeus or N. tenuis, indicating a strong early
defense response. However, PR1 expression levels
showed no significant changes, suggesting a predominant
role of the JA pathway over the SA pathway in
the induced resistance. We conclude that induction of
systemic resistance in tomato plants by N. tenuis, M.
pygmaeus, and (Z)-3-hexenyl propanoate before nematode
exposure is a promising strategy for nematode
management, at least to suppress nematode infection
by the primary inoculum and later reproduction. |
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