Bruchid
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Identification of Albizia lebbeck seed coat chitin-binding vicilins (7S globulins) with high toxicity to the larvae of the bruchid Callosobruchus maculatus
Seed coat is a specialized maternal tissue that interfaces the embryo and the external environment during embryogenesis, dormancy and germination. In addition, it is the first defensive barrier against penetration by pathogens and herbivores. Here we show that Albizia lebbeck seed coat dramatically compromises the oviposition, eclosion and development of the
Brazilian Journal of Medical and Biological Research. Publicado em: 2012-02
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2. Mutants of common bean alpha-amylase inhibitor-2 as an approach to investigate binding specificity to alpha-amylases.
Despite the presence of a family of defense proteins, Phaseolus vulgaris can be attacked by bruchid insects resulting in serious damage to stored grains. The two distinct active forms of a-amylase inhibitors, a-AI1 and a-AI2, in P. vulgaris show different specificity toward a-amylases. Zabrotes subfasciatus a-amylase is inhibited by a-AI2 but not by a-AI1. I
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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3. Mutants of common bean alpha-amylase inhibitor-2 as an approach to investigate binding specificity to alpha-amylases.
Despite the presence of a family of defense proteins, Phaseolus vulgaris can be attacked by bruchid insects resulting in serious damage to stored grains. The two distinct active forms of a-amylase inhibitors, a-AI1 and a-AI2, in P. vulgaris show different specificity toward a-amylases. Zabrotes subfasciatus a-amylase is inhibited by a-AI2 but not by a-AI1. I
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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4. Filogeografia molecular e atividade de enzimas digestivas do caruncho-do-feijão Acanthoscelides obtectus (Bruchidae:Coleoptera) / Phylogeography and molecular activity of digestive enzymes of bean-weevil, Acanthoscelides obtectus (Bruchidae:Coleoptera)
In the world, Brazil stands out as a major producer and consumer in the world of common bean, Phaseolus vulgaris, however has low productivity due to several factors among them, low technological level used in the cultivation and lack of care mainly plant grain during the storage of . Large losses in the storage of bean (P. vulgaris) are attributed to grain
Publicado em: 2008
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5. Identificação de atividades ATPásica e Amilásica em larvas de Pachymerus nucleorum (Fabricius, 1792) (Coleoptera: Chrysomelidae: Bruchinae)
ABSTRACT - CHAPTER I - Pachymerus nucleorum (Fabricius, 1792) is a beetle specie of the Bruchinae sub-family, family Chysomelidae, that principal host of this insect is a palm babassu (Orbinya spp). The objective of this work was identify and to characterize the ATPase activity in P. Nucleorum larvae. The P. nucleorum larvae guts were discartated and the gre
Publicado em: 2006
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6. IdentificaÃÃo de atividades ATPÃsica e AmilÃsica em larvas de Pachymerus nucleorum (Fabricius, 1792) (Coleoptera: Chrysomelidae: Bruchinae)
RESUMO GERAL - Atividades enzimÃticas do tipo ATPÃsica e AmilÃsica foram detectadas em larvas do coleÃptero Pachymerus nucleorum (Fabricius, 1792), uma espÃcie de besouro incluÃda na sub-famÃlia Bruchinae, da famÃlia Chrysomelidae e praga do coco babaÃu (Orbinya spp). A atividade ATPÃsica foi isolada por fracionamento com sulfato de amÃnio, de ext
Publicado em: 2006
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7. Vicilins (7S storage globulins) of cowpea (Vigna unguiculata) seeds bind to chitinous structures of the midgut of Callosobruchus maculatus (Coleoptera: Bruchidae) larvae
The presence of chitin in midgut structures of Callosobruchus maculatus larvae was shown by chemical and immunocytochemical methods. Detection by Western blotting of cowpea (Vigna unguiculata) seed vicilins (7S storage proteins) bound to these structures suggested that C. maculatus-susceptible vicilins presented less staining when compared to C. maculatus-re
Brazilian Journal of Medical and Biological Research. Publicado em: 2001-01
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8. Lima bean (Phaseolus lunatus) seed coat phaseolin is detrimental to the cowpea weevil (Callosobruchus maculatus)
The presence of phaseolin (a vicilin-like 7S storage globulin) peptides in the seed coat of the legume Phaseolus lunatus L. (lima bean) was demonstrated by N-terminal amino acid sequencing. Utilizing an artificial seed system assay we showed that phaseolin, isolated from both cotyledon and testa tissues of P. lunatus, is detrimental to the nonhost bruchid Ca
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-02
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9. Carbohydrate binding and resistance to proteolysis control insecticidal activity of Griffonia simplicifolia lectin II
Griffonia simplicifolia leaf lectin II (GSII), a plant defense protein against certain insects, consists of an N-acetylglucosamine (GlcNAc)-binding large subunit with a small subunit having sequence homology to class III chitinases. Much of the insecticidal activity of GSII is attributable to the large lectin subunit, because bacterially expressed recombinan
The National Academy of Sciences.
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10. Bean [alpha]-Amylase Inhibitor Confers Resistance to the Pea Weevil (Bruchus pisorum) in Transgenic Peas (Pisum sativum L.).
Bruchid larvae cause major losses of grain legume crops through-out the world. Some bruchid species, such as the cowpea weevil and the azuki bean weevil, are pests that damage stored seeds. Others, such as the pea weevil (Bruchus pisorum), attack the crop growing in the field. We transferred the cDNA encoding the [alpha]-amylase inhibitor ([alpha]-AI) found
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11. Bean α-amylase inhibitor 1 in transgenic peas (Pisum sativum) provides complete protection from pea weevil (Bruchus pisorum) under field conditions
Two α-amylase inhibitors, called αAI-1 and αAI-2, that share 78% amino acid sequence identity and have a differential specificity toward mammalian and insect α-amylases are present in different accessions of the common bean (Phaseolus vulgaris). Using greenhouse-grown transgenic peas (Pisum sativum), we have shown previously that expression of αAI-1 in
The National Academy of Sciences.
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12. Does reproductive isolation evolve faster in larger populations via sexually antagonistic coevolution?
Sexual conflict over reproductive investment can lead to sexually antagonistic coevolution and reproductive isolation. It has been suggested that, unlike most models of allopatric speciation, the evolution of reproductive isolation through sexually antagonistic coevolution will occur faster in large populations as these harbour greater levels of standing gen
The Royal Society.