Nematropica (2009) 39, 143-155

E. Villar-Luna, B. Reyes-Trejo, R.I. Rojas-Martínez, O. Gómez-Rodríguez, A.M. Hernández-Anguiano and E. Zavaleta-Mejía (2009)
Respuesta hipersensitiva en el follaje de chile cm-334 resistente a Phytophthora capsici infectado con Nacobbus aberrans
[Hypersensitive response in foliage of chili pepper CM-334 resistant to Phytophthora capsici infected by Nacobbus aberrans]
Nematropica 39 (1), 143-155
Abstract: The objectives of this research were to determine if CM-334 pepper plants resistant to Phytophthora capsici and infected with Nacobbus aberrans, respond hypersensitively (HR) to foliar inoculations with Pseudomonas syringae pv. tagetis or P. capsici; and to compare the contents of capsidiol in these interactions. The infection of CM-334 by N. aberrans did not inhibit the HR in the plant foliage, but it caused a delay in its expression. In the absence of the nematode, the onset of the response was observed at 5 hr and the typical HR was expressed at 7 hr after the bacterial inoculation, while in the presence of nematode by this time there was incipient chlorosis. Even though the nematode delayed the expression of the plant defense, such a delay was not sufficient to allow infection by P. capsici in the foliage. In the presence of N. aberrans, the accumulation of capsidiol in leaves infiltrated with P. capsici or the bacteria was reduced by 23 and 63%, respectively, at 3 days after foliar infiltration.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Spanish)
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Database assignments for author(s): Emma Zavaleta-Mejia

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Phytophthora capsici	Green pepper/chilli (Capsicum)
	Nacobbus aberrans	Green pepper/chilli (Capsicum)
	Pseudomonas syringae pv. tagetis	Green pepper/chilli (Capsicum)
	Pseudomonas syringae