Impact of plant and aphid stress history on infestation in arugula plants
Plants can activate inducible defence mechanisms against pests, pathogens, or chemical elicitors, such as ozone, mediated by reactive oxygen species [ROS], particularly hydrogen peroxide [H2O2]. An unfavourable balance between ROS production and the plant antioxidant capacity seems to be responsible...
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2013menendez.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
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| 245 | 1 | 0 | |a Impact of plant and aphid stress history on infestation in arugula plants |
| 520 | |a Plants can activate inducible defence mechanisms against pests, pathogens, or chemical elicitors, such as ozone, mediated by reactive oxygen species [ROS], particularly hydrogen peroxide [H2O2]. An unfavourable balance between ROS production and the plant antioxidant capacity seems to be responsible for the resulting susceptibility of the plant to insect attack. Arugula plants [Eruca sativa Mill. [Brassicaceae]] and green peach aphids, Myzus persicae [Sulzer] [Hemiptera: Aphididae], were used in this study to test the hypothesis that the growth of an aphid population depends on both plant and insect stress history. We investigated the impact of density and duration of a previous aphid infestation, and the time lag before re-infestation, on aphid population growth. In a second experiment, we assessed the effect on aphid population growth of previous ozone exposure of arugula plants in open top chambers receiving a continuous O3 fumigation of 100-120 p.p.b., 90 min per day during 3 days. A third experiment was conducted to study the effect of aphid density during a previous infestation on the population growth on an uninfested host. Both previous herbivory and ozone changed the oxidative status of plant tissues and facilitated aphid population growth, which increased with the duration and density of a previous infestation by aphids. Colonization success also depended on the aphids' own history. Aphids coming from high-density populations and/or longer infestation periods produced larger populations on an [initially] uninfested plant. Pest outbreaks in a polluted environment might be expected to be modulated by the hosts' spatial-temporal heterogeneity related to the ozone exposure and previous herbivory. | ||
| 653 | 0 | |a APHID-PLANT INTERACTION | |
| 653 | 0 | |a APHIDIDAE | |
| 653 | 0 | |a BRASSICACEAE | |
| 653 | 0 | |a ERUCA SATIVA | |
| 653 | 0 | |a GREEN PEACH APHID | |
| 653 | 0 | |a HEMIPTERA | |
| 653 | 0 | |a HERBIVORY | |
| 653 | 0 | |a MYZUS PERSICAE | |
| 653 | 0 | |a OXIDATIVE STRESS | |
| 653 | 0 | |a OZONE | |
| 653 | 0 | |a PLANT DEFENCE | |
| 653 | 0 | |a PREVIOUS INFESTATION | |
| 653 | 0 | |a ANTIOXIDANT | |
| 653 | 0 | |a APHID | |
| 653 | 0 | |a DEFENSE MECHANISM | |
| 653 | 0 | |a FUMIGATION | |
| 653 | 0 | |a HERBIVORY | |
| 653 | 0 | |a HYDROGEN PEROXIDE | |
| 653 | 0 | |a INSECT | |
| 653 | 0 | |a PATHOGEN | |
| 653 | 0 | |a PLANT DEFENSE | |
| 653 | 0 | |a POPULATION GROWTH | |
| 700 | 1 | |a Menéndez, Analía Inés |9 33439 | |
| 700 | 1 | |a Folcia, Ana María |9 19352 | |
| 700 | 1 | |a Vizgarra, Lidia A. |9 51324 | |
| 700 | 1 | |9 25212 |a Romero, Ana María | |
| 700 | 1 | |9 7113 |a Martínez Ghersa, María Alejandra | |
| 773 | |t Entomologia Experimentalis et Applicata |g vol.149, no.2 (2013) p.128-137 | ||
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| 900 | |a ^tImpact of plant and aphid stress history on infestation in arugula plants | ||
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| 900 | |a ^aMenéndez^bA.I.^tDepto. de Recursos Naturales y Ambiente, IFEVA-CONICET, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, Buenos Aires, 1417, Argentina | ||
| 900 | |a ^aFolcia^bA.M.^tDepto. de Producción Vegetal, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, Buenos Aires, 1417, Argentina | ||
| 900 | |a ^aVizgarra^bL.^tDepto. de Producción Vegetal, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, Buenos Aires, 1417, Argentina | ||
| 900 | |a ^aRomero^bA.M.^tDepto. de Producción Vegetal, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, Buenos Aires, 1417, Argentina | ||
| 900 | |a ^aMartínez-Ghersa^bM.A.^tDepto. de Recursos Naturales y Ambiente, IFEVA-CONICET, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, Buenos Aires, 1417, Argentina | ||
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| 900 | |a Vol. 149, no. 2 | ||
| 900 | |a 137 | ||
| 900 | |a APHID-PLANT INTERACTION | ||
| 900 | |a APHIDIDAE | ||
| 900 | |a BRASSICACEAE | ||
| 900 | |a ERUCA SATIVA | ||
| 900 | |a GREEN PEACH APHID | ||
| 900 | |a HEMIPTERA | ||
| 900 | |a HERBIVORY | ||
| 900 | |a MYZUS PERSICAE | ||
| 900 | |a OXIDATIVE STRESS | ||
| 900 | |a OZONE | ||
| 900 | |a PLANT DEFENCE | ||
| 900 | |a PREVIOUS INFESTATION | ||
| 900 | |a ANTIOXIDANT | ||
| 900 | |a APHID | ||
| 900 | |a DEFENSE MECHANISM | ||
| 900 | |a FUMIGATION | ||
| 900 | |a HERBIVORY | ||
| 900 | |a HYDROGEN PEROXIDE | ||
| 900 | |a INSECT | ||
| 900 | |a PATHOGEN | ||
| 900 | |a PLANT DEFENSE | ||
| 900 | |a POPULATION GROWTH | ||
| 900 | |a Plants can activate inducible defence mechanisms against pests, pathogens, or chemical elicitors, such as ozone, mediated by reactive oxygen species [ROS], particularly hydrogen peroxide [H2O2]. An unfavourable balance between ROS production and the plant antioxidant capacity seems to be responsible for the resulting susceptibility of the plant to insect attack. Arugula plants [Eruca sativa Mill. [Brassicaceae]] and green peach aphids, Myzus persicae [Sulzer] [Hemiptera: Aphididae], were used in this study to test the hypothesis that the growth of an aphid population depends on both plant and insect stress history. We investigated the impact of density and duration of a previous aphid infestation, and the time lag before re-infestation, on aphid population growth. In a second experiment, we assessed the effect on aphid population growth of previous ozone exposure of arugula plants in open top chambers receiving a continuous O3 fumigation of 100-120 p.p.b., 90 min per day during 3 days. A third experiment was conducted to study the effect of aphid density during a previous infestation on the population growth on an uninfested host. Both previous herbivory and ozone changed the oxidative status of plant tissues and facilitated aphid population growth, which increased with the duration and density of a previous infestation by aphids. Colonization success also depended on the aphids' own history. Aphids coming from high-density populations and/or longer infestation periods produced larger populations on an [initially] uninfested plant. Pest outbreaks in a polluted environment might be expected to be modulated by the hosts' spatial-temporal heterogeneity related to the ozone exposure and previous herbivory. | ||
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