Natural seed coats provide protection against penetration by Callosobruchus maculatus (Coleoptera: Bruchidae) larvae

Souza, Amanda Jardim de; Santos, Patrícia; Pinto, Márcio S. T.; Wermelinger, Tierry Torres; Ribeiro, Elane da Silva; Souza, Simone C.; Deus, Mariana Feitosa de; Souza, Maria Cristina Martins Ribeiro de; Xavier‐Filho, J.; Fernandes, Kátia Valevski Sales; Oliveira, Antônia Elenir Amâncio

doi:10.1016/j.cropro.2010.12.014

Cited by 32 publications

(28 citation statements)

References 15 publications

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“…The low mortality during the larval stage inside the seeds indicates that factors other than αAI-1 are responsible for the observed differences in seed resistance. It has been argued that the seed coat of non-host legumes can contribute to the resistance against bruchids [19], and in the current study, the failure to chew through the seed coat accounted for the highest larval mortality in experiment 1. Cowpea is not a primary host of Z. subfasciatus , and the cowpea seed coat contains resistance factors such as tannins and α-amylase inhibitors [20].…”

Section: Discussionsupporting

confidence: 47%

Impact of αAI-1 Expressed in Genetically Modified Cowpea on Zabrotes subfasciatus (Coleoptera: Chrysomelidae) and Its Parasitoid, Dinarmus basalis (Hymenoptera: Pteromalidae)

2013

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Genetically modified (GM) cowpea seeds expressing αAI-1, an α-amylase inhibitor from the common bean, have been shown to be immune against several bruchid species. Effective control of such pests by growing GM cowpea could promote the spread of bruchid species that are αAI-1 tolerant. Consequently, the sustainability of bruchid pest control could be increased by combining GM seeds and hymenopteran parasitoids. However, there are concerns that αAI-1 could interfere with the biological control provided by parasitoids. Here, we assessed the impact of GM cowpea seeds expressing αAI-1 on the αAI-1-tolerant bruchid Zabrotes subfasciatus and its parasitoid Dinarmus basalis. αAI-1 in cowpea seeds did not increase resistance to Z. subfasciatus or affect the mortality rate of Z. subfasciatus larvae. Parasitism of Z. subfasciatus by D. basalis and fitness of D. basalis offspring were not affected by the presence of αAI-1. Thus, αAI-1-expressing cowpeas and parasitoids should be compatible for the control of bruchid pests.

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Section: Discussionsupporting

confidence: 47%

Impact of αAI-1 Expressed in Genetically Modified Cowpea on Zabrotes subfasciatus (Coleoptera: Chrysomelidae) and Its Parasitoid, Dinarmus basalis (Hymenoptera: Pteromalidae)

2013

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“…The tegument is where the attack by bruchids starts and is a physical line of defense against infestation. Research results reported that differences in plant teguments resulted in varied rates of larvae eclosion and adult emergence and the time needed for the larvae to perforate the tegument …”

Section: Resultsmentioning

confidence: 99%

The damage caused by Callosobruchus maculatus on cowpea grains is dependent on the plant genotype

Torres

Nóbrega

Fernandes‐Júnior

et al. 2016

J. Sci. Food Agric.

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“…Interestingly, the two host plant species ( C. chilensis and C. bonariensis ) do not differ in seed size or seed nitrogen content [29], which are general indicators of host quality for seed beetles [14], [43]–[45]. Thus, it is likely that the observed pattern of local host adaptation in bruchid performance results from the specific exploitation of a particular nutritional factor [46] or to differences in seed coat properties [47]. These hypotheses deserve further investigation.…”

Section: Discussionmentioning

confidence: 99%

Local Host Adaptation and Use of a Novel Host in the Seed Beetle Megacerus eulophus

Stotz

Suárez

Gonzáles³

et al. 2013

PLoS ONE

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Spatial variation in host plant availability may lead to specialization in host use and local host adaptation in herbivorous insects, which may involve a cost in performance on other hosts. We studied two geographically separated populations of the seed beetle Megacerus eulophus (Coleoptera: Bruchidae) in central Chile: a population from the host Convolvulus chilensis (in Aucó) and a population from C. bonariensis (in Algarrobo). In Aucó C. chilensis is the only host plant, while in Algarrobo both C. bonariensis and C. chilensis are available. We tested local adaptation to these native host plants and its influence on the use of another, exotic host plant. We hypothesized that local adaptation would be verified, particularly for the one-host population (Aucó), and that the Aucó population would be less able to use an alternative, high-quality host. We found evidence of local adaptation in the population from C. chilensis. Thus, when reared on C. chilensis, adults from the C. chilensis population were larger and lived longer than individuals from the C. bonariensis population, while bruchids from the two populations had the same body size and longevity when reared on C. bonariensis. Overall, bruchids from the C. chilensis population showed greater performance traits than those from the C. bonariensis population. There were no differences between the bruchid populations in their ability to use the alternative, exotic host Calystegia sepium, as shown by body size and longevity patterns. Results suggest that differences in local adaptation might be explained by differential host availability in the study populations.

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Natural seed coats provide protection against penetration by Callosobruchus maculatus (Coleoptera: Bruchidae) larvae

Cited by 32 publications

References 15 publications

Impact of αAI-1 Expressed in Genetically Modified Cowpea on Zabrotes subfasciatus (Coleoptera: Chrysomelidae) and Its Parasitoid, Dinarmus basalis (Hymenoptera: Pteromalidae)

Impact of αAI-1 Expressed in Genetically Modified Cowpea on Zabrotes subfasciatus (Coleoptera: Chrysomelidae) and Its Parasitoid, Dinarmus basalis (Hymenoptera: Pteromalidae)

The damage caused by Callosobruchus maculatus on cowpea grains is dependent on the plant genotype

Local Host Adaptation and Use of a Novel Host in the Seed Beetle Megacerus eulophus

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