Inducible versus constitutive PI 227687 soybean resistance to mexican bean beetle,Epilachna varivestis

Chiang, H. S.; Norris, Dale M.; Ciepiela, A P; Shapiro, Paul; Oosterwyk, A.

doi:10.1007/bf01020156

Cited by 34 publications

(19 citation statements)

References 10 publications

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“…Many studies have documented changes in plants induced by herbivore feeding or arti®cial damage over some period of time (e.g., Baldwin 1988;Croxford et al 1989;Baldwin et al 1994;McCloud et al 1995), and the existing data generally support the model of the timing of induced resistance described above. However, most studies have looked at induced resistance over short periods of time, and many have not followed their systems through the full decay of induced responses (e.g., Edwards et al 1985;Chiang et al 1987;Olson and Roseland 1991;Stout et al 1996). It is therefore not yet clear that we have a complete picture of the time course of induced resistance.…”

Section: Introductionmentioning

confidence: 96%

The timing of induced resistance and induced susceptibility in the soybean-Mexican bean beetle system

Underwood

1998

Oecologia

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Induced plant responses to herbivory have been demonstrated in many systems. It has been suggested that the timing of these responses may influence the impact of induced resistance on herbivore populations, and may affect the evolution of induced defenses. This study used a bioassay to characterize the time course of systemic induced responses to Mexican bean beetle herbivory in four genotypes of soybeans. The results suggest that the time course of induced responses in this system is more complex than most previous studies have indicated. Herbivory provoked both rapid induced resistance and subsequent induced susceptibility to beetle feeding. All four genotypes of soybean induced significant resistance to beetle damage (beetles preferred undamaged to damaged plants) by 3 days after damage. By 15 days after damage, this resistance had decayed (beetles showed no preference for undamaged over damaged plants), and by 20 days after damage, all four genotypes exhibited significant induced susceptibility (beetles preferred previously damaged plants over undamaged plants). The magnitude of induced resistance in each genotype correlated strongly with the magnitude of induced susceptibility in that genotype.

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Section: Introductionmentioning

confidence: 96%

The timing of induced resistance and induced susceptibility in the soybean-Mexican bean beetle system

Underwood

1998

Oecologia

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“…Alterable (inducible) resistance in plants to herbivory and other environmental stresses is well documented (Kogan & Paxton, 1983;Chiang et al, 1987;Heinrichs, 1988); however, more emphasis should be placed on the fact that a plant's response to such environmental stimuli may range from maximized resistance to maximized susceptibility (Neupane & Norris, 1990;Haanstad & Norris, 1991). Specific responses are influenced especially by the plant species and cultivar, the overall plant physiological status, the specific involved leaf or other plant organ, the dosage of the elicitor, the method of elicitor application and the time interval since exposure (treatment) (Neupane & Norris, 1990;Haanstad & Norris, 1991).…”

Section: Introductionmentioning

confidence: 99%

Sulfhydryl‐reagent alteration of soybean resistance to the cabbage looper, Trichoplusia ni

Neupane

Norris

1991

Entomologia Exp Applicata

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The hypothesis that the sulfhydryl reagent, N‐ethylmaleimide, would function as an elicitor of alterable resistance in soybean (Glycine max) plants to Trichoplusia ni herbivory was tested experimentally under greenhouse conditions. This elicitory chemical, which allows receptor thiols to add across its carbon‐carbon double bond, altered the resistance in one or more leaves of plants at one or more intervals after treatment; and thus yielded results supporting the hypothesis. Leaf dipping and soil application were both effective methods of treatment. Results support the interpretation that an elicitor may function in intact plants by altering the integrity of sulfhydryl groups in receptor macromolecules which are also involved in signaling a change in the plant's biosynthesis of characteristic defensive compounds such as phenyl‐propanoids including antifeedant and antibiotic flavonoids. Induced feeding non‐preference by T. ni was highly correlated positively with the amount of glyceollins in the leaf.

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“…SBL is a general plant feeder and its host range includes members of 28 plant families (Herzog, 1980). The role of induced factors in the resistance of soybean to herbivores is only beginning to be unravelled, but recent studies have shown that soybean resistance to the MBB increases in response to extrinsic stress factors, including UV radiation (Hart et al, 1983), mechanical injury and fungal cell wall suspension (Lin & Kogan, unpublished), and insect herbivory (Chiang et al, 1987;Lin & Kogan, unpublished). Growth rates of SBL larvae decreased when larvae were reared on soybean leaves from plants that had been mechanically injured (Reynolds & Smith, 1985).…”

Section: Introductionmentioning

confidence: 99%

Influence of induced resistance in soybean on the development and nutrition of the soybean looper and the Mexican bean beetle

Lin

Kogan

1990

Entomologia Exp Applicata

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Standard gravimetric technique was used to assess the effect of induced resistance in soybean on the consumption and utilization of food by the Mexican bean beetle (MBB), Epilachna varivestis, and the soybean looper (SBL), Pseudoplusia includens. Induced resistance had significant retarding effects on the development and growth of both SBL and MBB. SBL fed leaves of previously injured soybean plants had a 8.5% longer developmental time through the entire larval stage and a 10.4% lower pupal weight than larvae fed leaves from uninjured plants. MBB fed on leaves from previously injured plants through the first three instars had a 9.1 % longer developmental time and a 16.5% lower final weight than those fed on leaves from uninjured plants. Induced resistance showed no significant effect on total food consumed by either SBL or MBB. Nutritional indices including relative consumption rate (RCR), relative growth rate (RGR), efficiency of conversion of ingested food (ECI), approximate digestibility (AD), and efficiency of conversion of digested food (ECD) were calculated on dry weight measurements. In general, induced resistance had greater impacts on the performance of MBB than on that of SBL. Résumé Influence de la résistance induite chez le soja sur le développement et l'alimentation de Pseudoplusia includens et Epilachna varivestis Une technique gravimétrique uniforme a été utilisée pour mesurer l'effet de la résistance induite du soja et la consommation et l'utilisation d'aliments par E. varivestis (Coléop.: Coccinellidae) et P. includens (Lepid.: Noctuidae). La résistance induite a significativement retardé la croissance et le développement des 2 insectes. La consommation de feuilles déjà abîmées a prolongé de 8.5% la durée du développement de P. includens et a réduit de 10.4% le poids des chrysalides. La consommation de feuilles de soja abîmées pendant les 3 premiers stades d'E. varivestis a prolongé le développement de 9.1% et a réduit de 16.5% le poids des nymphes. La résistance induite n'a pas provoqué une modification significative de la quantité de feuilles de soja abîmées chez les 2 insectes. Les indices de nutrition, comprenant le taux de consommation relative (RCR), le taux de croissance relative (RGR), l'efficacité de transformation de l'aliment ingéré (ECI), la digestibilité approchée (AD) et l'efficacité de conversion de l'aliment digéré (ECD), ont été calculés à partir des poids secs. En général, la résistance induite a eu des effets plus nets sur les performances d'E. varivestis que de P. includens.

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Inducible versus constitutive PI 227687 soybean resistance to mexican bean beetle,Epilachna varivestis

Cited by 34 publications

References 10 publications

The timing of induced resistance and induced susceptibility in the soybean-Mexican bean beetle system

The timing of induced resistance and induced susceptibility in the soybean-Mexican bean beetle system

Sulfhydryl‐reagent alteration of soybean resistance to the cabbage looper, Trichoplusia ni

Influence of induced resistance in soybean on the development and nutrition of the soybean looper and the Mexican bean beetle

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