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Registro Completo |
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
10/05/2016 |
Data da última atualização: |
14/02/2018 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
DARBEN, L. M.; QI, M.; YOKOYAMA, A.; CARVALHO, M. C. C. G. de; ABDELNOOR, R. V.; WHITHAM, S. A.; MARCELINO-GUIMARÃES, F. C. |
Afiliação: |
Iowa State University; Iowa State University; UENP - Bandeirantes, PR.; RICARDO VILELA ABDELNOOR, CNPSO; Iowa State University; FRANCISMAR CORREA MARCELINO GUIMARÃES, CNPSO. |
Título: |
Functional characterization of P. pachyrhizi effector candidates. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
In: INTERNATIONAL CONGRESS OF PLANT MOLECULAR BIOLOGY, 11., 2015, Iguassu Falls. Abstract... |
Idioma: |
Inglês |
Notas: |
Abstract: 840.pdf. |
Thesagro: |
Doença de planta; Doença fúngica; Fungo; Phakopsora pachyrhizi; Soja. |
Thesaurus Nal: |
Fungal diseases of plants; Plant diseases and disorders; Soybeans. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
Marc: |
LEADER 00868nam a2200277 a 4500 001 2044704 005 2018-02-14 008 2015 bl uuuu u00u1 u #d 100 1 $aDARBEN, L. M. 245 $aFunctional characterization of P. pachyrhizi effector candidates.$h[electronic resource] 260 $aIn: INTERNATIONAL CONGRESS OF PLANT MOLECULAR BIOLOGY, 11., 2015, Iguassu Falls. Abstract...$c2015 500 $aAbstract: 840.pdf. 650 $aFungal diseases of plants 650 $aPlant diseases and disorders 650 $aSoybeans 650 $aDoença de planta 650 $aDoença fúngica 650 $aFungo 650 $aPhakopsora pachyrhizi 650 $aSoja 700 1 $aQI, M. 700 1 $aYOKOYAMA, A. 700 1 $aCARVALHO, M. C. C. G. de 700 1 $aABDELNOOR, R. V. 700 1 $aWHITHAM, S. A. 700 1 $aMARCELINO-GUIMARÃES, F. C.
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Embrapa Soja (CNPSO) |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
22/06/2016 |
Data da última atualização: |
26/01/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
SOUSA, F. F.; MENDES, S. M.; SANTOS-AMAYA, O. F.; ARAÚJO, O. G.; OLIVEIRA, E. E.; PEREIRA, E. J. G. |
Afiliação: |
SIMONE MARTINS MENDES, CNPMS. |
Título: |
Life-history traits of Spodoptera frugiperda populations exposed to low-dose Bt maize. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Plos One, San Francisco, v. 11, n. 5, p. 1-18, May 2016. |
DOI: |
10.1371/journal.pone.0156608 |
Idioma: |
Inglês |
Conteúdo: |
Exposure to Bacillus thuringiensis (Bt) toxins in low- and moderate-dose transgenic crops may induce sublethal effects and increase the rate of Bt resistance evolution, potentially compromising control efficacy against target pests. We tested this hypothesis using the fall armyworm Spodoptera frugiperda, a major polyphagous lepidopteran pest relatively tolerant to Bt notorious for evolving field-relevant resistance to single-gene Bt maize. Late-instar larvae were collected from Bt Cry1Ab and non-Bt maize fields in five locations in Brazil, and their offspring was compared for survival, development, and population growth in rearing environment without and with Cry1Ab throughout larval development. Larval survival on Cry1Ab maize leaves varied from 20 to 80% among the populations. Larvae reared on Cry1Ab maize had seven-day delay in development time in relation to control larvae, and such delay was shorter in offspring of armyworms from Cry1Ab maize. Population growth rates were 50?70% lower for insects continuously exposed to Cry1Ab maize relative to controls, showing the population-level effect of Cry1Ab, which varied among the populations and prior exposure to Cry1Ab maize in the field. In three out of five populations, armyworms derived from Bt maize reared on Cry1Ab maize showed higher larval weight, faster larval development and better reproductive performance than the armyworms derived from non-Bt maize, and one of these populations showed better performance on both Cry1Ab and control diets, indicating no fitness cost of the resistance trait. Altogether, these results indicate that offspring of armyworms that developed on field-grown, single-gene Bt Cry1Ab maize had reduced performance on Cry1Ab maize foliage in two populations studied, but in other three populations, these offspring had better overall performance on the Bt maize foliage than that of the armyworms from non-Bt maize fields, possibly because of Cry1Ab resistance alleles in these populations. Implications of these findings for resistance management of S. frugiperda in Bt crops are discussed. MenosExposure to Bacillus thuringiensis (Bt) toxins in low- and moderate-dose transgenic crops may induce sublethal effects and increase the rate of Bt resistance evolution, potentially compromising control efficacy against target pests. We tested this hypothesis using the fall armyworm Spodoptera frugiperda, a major polyphagous lepidopteran pest relatively tolerant to Bt notorious for evolving field-relevant resistance to single-gene Bt maize. Late-instar larvae were collected from Bt Cry1Ab and non-Bt maize fields in five locations in Brazil, and their offspring was compared for survival, development, and population growth in rearing environment without and with Cry1Ab throughout larval development. Larval survival on Cry1Ab maize leaves varied from 20 to 80% among the populations. Larvae reared on Cry1Ab maize had seven-day delay in development time in relation to control larvae, and such delay was shorter in offspring of armyworms from Cry1Ab maize. Population growth rates were 50?70% lower for insects continuously exposed to Cry1Ab maize relative to controls, showing the population-level effect of Cry1Ab, which varied among the populations and prior exposure to Cry1Ab maize in the field. In three out of five populations, armyworms derived from Bt maize reared on Cry1Ab maize showed higher larval weight, faster larval development and better reproductive performance than the armyworms derived from non-Bt maize, and one of these populations showed better performance on both Cry... Mostrar Tudo |
Thesagro: |
Lagarta; Praga de planta; Zea mays. |
Categoria do assunto: |
O Insetos e Entomologia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/144678/1/Life-history.pdf
|
Marc: |
LEADER 02778naa a2200229 a 4500 001 2047700 005 2018-01-26 008 2016 bl uuuu u00u1 u #d 024 7 $a10.1371/journal.pone.0156608$2DOI 100 1 $aSOUSA, F. F. 245 $aLife-history traits of Spodoptera frugiperda populations exposed to low-dose Bt maize.$h[electronic resource] 260 $c2016 520 $aExposure to Bacillus thuringiensis (Bt) toxins in low- and moderate-dose transgenic crops may induce sublethal effects and increase the rate of Bt resistance evolution, potentially compromising control efficacy against target pests. We tested this hypothesis using the fall armyworm Spodoptera frugiperda, a major polyphagous lepidopteran pest relatively tolerant to Bt notorious for evolving field-relevant resistance to single-gene Bt maize. Late-instar larvae were collected from Bt Cry1Ab and non-Bt maize fields in five locations in Brazil, and their offspring was compared for survival, development, and population growth in rearing environment without and with Cry1Ab throughout larval development. Larval survival on Cry1Ab maize leaves varied from 20 to 80% among the populations. Larvae reared on Cry1Ab maize had seven-day delay in development time in relation to control larvae, and such delay was shorter in offspring of armyworms from Cry1Ab maize. Population growth rates were 50?70% lower for insects continuously exposed to Cry1Ab maize relative to controls, showing the population-level effect of Cry1Ab, which varied among the populations and prior exposure to Cry1Ab maize in the field. In three out of five populations, armyworms derived from Bt maize reared on Cry1Ab maize showed higher larval weight, faster larval development and better reproductive performance than the armyworms derived from non-Bt maize, and one of these populations showed better performance on both Cry1Ab and control diets, indicating no fitness cost of the resistance trait. Altogether, these results indicate that offspring of armyworms that developed on field-grown, single-gene Bt Cry1Ab maize had reduced performance on Cry1Ab maize foliage in two populations studied, but in other three populations, these offspring had better overall performance on the Bt maize foliage than that of the armyworms from non-Bt maize fields, possibly because of Cry1Ab resistance alleles in these populations. Implications of these findings for resistance management of S. frugiperda in Bt crops are discussed. 650 $aLagarta 650 $aPraga de planta 650 $aZea mays 700 1 $aMENDES, S. M. 700 1 $aSANTOS-AMAYA, O. F. 700 1 $aARAÚJO, O. G. 700 1 $aOLIVEIRA, E. E. 700 1 $aPEREIRA, E. J. G. 773 $tPlos One, San Francisco$gv. 11, n. 5, p. 1-18, May 2016.
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