Antibiosis Levels to Spodoptera frugiperda (Lepidoptera: Noctuidae) in Cowpea Commercial Cultivars and Landrace Varieties

Costa, Eduardo Neves; Evangelista, Bruna Moura Dias; Fernandes, Marcos Gino

doi:10.1093/jee/toz096

Cited by 6 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This experiment was carried out using six treatments and six replicates. Each replicate comprised three neonate larvae, to minimize the effects of natural mortality commonly observed in the first days after larval hatching (Costa et al, 2019). As expected, cannibalism was not observed; this behavior is more often seen in older larvae (Chapman et al, 1999).…”

Section: Methodsmentioning

confidence: 99%

Maize resistance to Spodoptera frugiperda and its relationship to landrace variety, plant stage, and larval origin

Costa

Fernandes

Medeiros

2021

Entomologia Exp Applicata

Self Cite

View full text Add to dashboard Cite

Previous studies have raised the hypothesis that laboratory‐reared insects may lose their ability to induce plant defenses because induction‐associated gut bacteria may be eliminated by antibiotics used in artificial diets. The present study was conducted to determine whether maize (Zea mays L., Poaceae) responses to Spodoptera frugiperda (JE Smith) (Lepidoptera: Noctuidae) differ when field‐collected vs. laboratory‐reared insects are feeding. One fifth instar from the laboratory or field was released onto a resistant or a susceptible landrace variety at vegetative stages 4 and 6 (V4 and V6), or plants remained uninfested. Five days later, damage was estimated and sections of maize leaves were fed to forth instars in a Petri dish assay to assess the effects of previous feeding on weight gain, leaf consumption, and nutritional indices of conspecifics. Initially, field‐collected larvae caused more damage on V4, but not on V6 maize plants, than laboratory‐reared larvae. In V6 plants, the resistant variety showed less leaf damage than the susceptible variety. In a Petri dish assay, there were no differences between effects of laboratory‐reared and field‐collected larvae on the measured parameters, but larvae from both sources promoted increased susceptibility in maize plants at the V4, but not the V6 stage. This was characterized by higher weight gain and higher efficiency of conversion of ingested food (ECI) (on both maize varieties), and lower metabolic cost (MC) (on one variety) when S. frugiperda larvae fed on leaves pre‐infested with laboratory‐reared larvae compared to leaves of uninfested plants. Conversely, S. frugiperda larvae fed on leaves pre‐infested with field‐collected larvae consumed a greater amount of leaf tissue (on both varieties) compared to leaves of uninfested plants. A similar experiment with neonates showed no effects of landrace variety or previous infestation on insect weight and survival, but insects obtained a higher body weight when fed on V4 compared to V6 plants. In conclusion, S. frugiperda laboratory‐reared larvae were equally able as field‐collected larvae to induce susceptibility in V4 maize plants, and maize plants were more resistant to the pest at the V6 than at the V4 stage.

show abstract

Section: Methodsmentioning

confidence: 99%

Maize resistance to Spodoptera frugiperda and its relationship to landrace variety, plant stage, and larval origin

Costa

Fernandes

Medeiros

2021

Entomologia Exp Applicata

Self Cite

View full text Add to dashboard Cite

show abstract

“…Murúa and Virla (2004) also determined significant differences in native maize leaves, Panicum maximum Jacquin, and Cynodon dactylon (L.) Persoon (Poales: Poaceae). Costa et al (2019) reported 39.7±32.8 to 362.0±180.2 eggs per egg mass on cultivars of Vigna unguiculata (L.) Walpers (Fabales: Fabaceae), while with respect to races fecundity was not determined because of the low rate of adult emergence.…”

Section: Discussionmentioning

confidence: 99%

Growth and fecundity of Spodoptera frugiperda on native Zea mays and the teosinte Z. luxurians, from Oaxaca, Mexico

Padilla-Cortes

Martínez-Martínez

Chávez-Servia

2022

Rev. Colomb. Entomol.

View full text Add to dashboard Cite

Resistance to Spodoptera frugiperda (Lepidoptera: Noctuidae) damage has been documented in some Mexican maize races and teosintes. There are approximately 31 races of native maize and three races of teosinte in Oaxaca state, but little is known about their resistance to insect damage. This study compared the development and fecundity of S. frugiperda fed on native maize and the teosinte Zea luxurians, from Oaxaca, Mexico. No significant differences were determined in the development parameters of males and females according to the host plant types, except the pupal weight of males, which was higher on teosinte (0.189 g) than on native maize (0.174 g). Duration from hatching to adult emergence was 28.96 to 30.17 d on native maize and 28.51 to 30.34 d on teosinte. Females emerged before males in both host plant types. The sex ratio was approximately 0.5 for both sexes. Larval weight was higher on teosinte (0.451 to 0.459 g) than on native maize (0.442 to 0.454 g). According to the fecundity parameters, no significant differences in the duration of oviposition, the number of eggs per egg mass, eggs per female, and eggs per host plant types were determined. Fitness Index was positively correlated with the pupal weight of both sexes and the fecundity parameters of S. frugiperda females. Our results demonstrated that larval feeding on native maize and teosinte did not affect the development parameters and fecundity of S. frugiperda. Constitutive defenses in native maize leaves were similar to those of teosinte.

show abstract

Resistance of Cowpea Genotypes to Spodoptera frugiperda (Lepidoptera: Noctuidae) and Its Relationship to Resistance-Related Enzymes

Costa¹,

Martins

Reis³

et al. 2020

Journal of Economic Entomology

View full text Add to dashboard Cite

Spodoptera frugiperda (J.E. Smith) can attack cowpea plants (Vigna unguiculata [L.] Walp.) (Fabales: Fabaceae) in any growth stage but attacks primarily in the first days after plant emergence, when the plants are more sensitive to defoliation. This study was carried out to evaluate the resistance to S. frugiperda in six cowpea genotypes, of which four were cultivars (BRS Tapahium, BRS Tumucumaque, Fradinho, and Miranda), and two were landraces (Juti and Nioaque), in three different experiments. In the first experiment, adult emergence, adult weight, adult longevity, larva to adult period, numbers of injured leaves per plant canopy (upper, middle, and lower), and reduction in plant dry matter were assessed. In the second experiment, the oviposition preference of S. frugiperda for the different cowpea genotypes was evaluated under free-choice conditions. In the third experiment, levels of peroxidase (POD), superoxide dismutase (SOD), and protein content in cowpea leaves were assessed. Insects fed on landrace Juti plants showed low adult emergence, yielded a lower fitness index, and caused less plant dry matter reduction. In addition, plants of landrace Juti were less preferred for oviposition. Overall, Juti plants showed higher resistance levels in all three resistance categories and higher levels of POD and SOD in S. frugiperda injured leaves, in addition to a lower protein content. Juti will be tested in field conditions, followed by molecular characterization. This will provide additional information about its potential as an S. frugiperda resistance source in plant breeding programs.

show abstract

Antibiosis Levels to Spodoptera frugiperda (Lepidoptera: Noctuidae) in Cowpea Commercial Cultivars and Landrace Varieties

Cited by 6 publications

References 16 publications

Maize resistance to Spodoptera frugiperda and its relationship to landrace variety, plant stage, and larval origin

Maize resistance to Spodoptera frugiperda and its relationship to landrace variety, plant stage, and larval origin

Growth and fecundity of Spodoptera frugiperda on native Zea mays and the teosinte Z. luxurians, from Oaxaca, Mexico

Resistance of Cowpea Genotypes to Spodoptera frugiperda (Lepidoptera: Noctuidae) and Its Relationship to Resistance-Related Enzymes

Contact Info

Product

Resources

About