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Biblioteca(s): |
Embrapa Pantanal. |
Data corrente: |
03/10/2005 |
Data da última atualização: |
10/03/2017 |
Autoria: |
BROWN, G. P.; SHINE, R. |
Afiliação: |
Biological Sciences, University of Sydney (New South Wales, Australia). |
Título: |
Influence of weather conditions on activity of tropical snakes. |
Ano de publicação: |
2002 |
Fonte/Imprenta: |
Austral Ecology, v. 27, p. 596-605, 2002. |
Idioma: |
Inglês |
Conteúdo: |
There are many anecdotal reports of massive day-to-day variation in activity levels of tropical reptiles and amphibians, and intuition suggests that weather conditions may be reponsible for much of that variation. Our analysis of a large data set on the activity levels of tropical snakes and frogs confirms the existence of this short-term variation in activity levels, reveals, reveals strong synchrony between sympatric taxa in this respect, but also shows that standard weather variables (temperature, humidity, precipitation, moonlight, atmospheric pressure) are surprisingly poor at predicting the numbers of individuals and species encountered during standardized surveys. We recorded the numbers of snakes and prey taxa (frogs) encountered on 349 nights over the course of one year on a 1.3-km transect in the Adelaide River floodplain, in the wet-dry tropics of Australia. Frogs, water pytrons (Liasis fuscus), slatey-grey snakes (Stegonotus cucullatus) and keelbacks (Tropidonophis mairii) all showed strongly seasonal patterns of activity. After adjusting for seasonal differences, encounter rates were related to climatic conditicions but different taxa responded to different weather variables. Water python activity was related to amount of moonlight, keelback activity was related to temperature, and frog activity was related to relative humidity, rainfall, temperature and moonlight. However, weather variables explained relatively little of the variation in activity levesl. Strong synchrony was evident among encounter rates with various taxa (independent of season and weather conditions), suggesting that acitivity levels may be determined by other unmeasured factors. MenosThere are many anecdotal reports of massive day-to-day variation in activity levels of tropical reptiles and amphibians, and intuition suggests that weather conditions may be reponsible for much of that variation. Our analysis of a large data set on the activity levels of tropical snakes and frogs confirms the existence of this short-term variation in activity levels, reveals, reveals strong synchrony between sympatric taxa in this respect, but also shows that standard weather variables (temperature, humidity, precipitation, moonlight, atmospheric pressure) are surprisingly poor at predicting the numbers of individuals and species encountered during standardized surveys. We recorded the numbers of snakes and prey taxa (frogs) encountered on 349 nights over the course of one year on a 1.3-km transect in the Adelaide River floodplain, in the wet-dry tropics of Australia. Frogs, water pytrons (Liasis fuscus), slatey-grey snakes (Stegonotus cucullatus) and keelbacks (Tropidonophis mairii) all showed strongly seasonal patterns of activity. After adjusting for seasonal differences, encounter rates were related to climatic conditicions but different taxa responded to different weather variables. Water python activity was related to amount of moonlight, keelback activity was related to temperature, and frog activity was related to relative humidity, rainfall, temperature and moonlight. However, weather variables explained relatively little of the variation in activity levesl. Strong... Mostrar Tudo |
Palavras-Chave: |
Luar; Moonlight; Precipitação; Precipitation; Reptile; Synchrony. |
Thesagro: |
Réptil; Temperatura; Umidade Relativa. |
Thesaurus Nal: |
relative humidity; temperature. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02347naa a2200265 a 4500 001 1802454 005 2017-03-10 008 2002 bl --- 0-- u #d 100 1 $aBROWN, G. P. 245 $aInfluence of weather conditions on activity of tropical snakes. 260 $c2002 520 $aThere are many anecdotal reports of massive day-to-day variation in activity levels of tropical reptiles and amphibians, and intuition suggests that weather conditions may be reponsible for much of that variation. Our analysis of a large data set on the activity levels of tropical snakes and frogs confirms the existence of this short-term variation in activity levels, reveals, reveals strong synchrony between sympatric taxa in this respect, but also shows that standard weather variables (temperature, humidity, precipitation, moonlight, atmospheric pressure) are surprisingly poor at predicting the numbers of individuals and species encountered during standardized surveys. We recorded the numbers of snakes and prey taxa (frogs) encountered on 349 nights over the course of one year on a 1.3-km transect in the Adelaide River floodplain, in the wet-dry tropics of Australia. Frogs, water pytrons (Liasis fuscus), slatey-grey snakes (Stegonotus cucullatus) and keelbacks (Tropidonophis mairii) all showed strongly seasonal patterns of activity. After adjusting for seasonal differences, encounter rates were related to climatic conditicions but different taxa responded to different weather variables. Water python activity was related to amount of moonlight, keelback activity was related to temperature, and frog activity was related to relative humidity, rainfall, temperature and moonlight. However, weather variables explained relatively little of the variation in activity levesl. Strong synchrony was evident among encounter rates with various taxa (independent of season and weather conditions), suggesting that acitivity levels may be determined by other unmeasured factors. 650 $arelative humidity 650 $atemperature 650 $aRéptil 650 $aTemperatura 650 $aUmidade Relativa 653 $aLuar 653 $aMoonlight 653 $aPrecipitação 653 $aPrecipitation 653 $aReptile 653 $aSynchrony 700 1 $aSHINE, R. 773 $tAustral Ecology$gv. 27, p. 596-605, 2002.
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Embrapa Pantanal (CPAP) |
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Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
24/03/2021 |
Data da última atualização: |
03/05/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
ALEKCEVETCH, J. C.; PASSIANOTTO, A. L. de L.; FERREIRA, E. G. C.; SANTOS, A. B. dos; SILVA, D. C. G. da; DIAS, W. P.; BELZILE, F.; ABDELNOOR, R. V.; MARCELINO-GUIMARÃES, F. C. |
Afiliação: |
JEAN CARLOS ALEKCEVETCH, Universidade Estadual de Londrina, UEL, Londrina, PR.; ANDRÉ LUIZ DE LIMA PASSIANOTTO, University of Guelph, Guelph, Canada.; EVERTON GERALDO CAPOTE FERREIRA, Universidade Estadual de Londrina, UEL, Londrina, PR.; ADRIANA BROMBINI DOS SANTOS, CNPSO; DANIELLE CRISTINA GREGORIO DA SILVA, CNPSO; WALDIR PEREIRA DIAS, CNPSO; FRANÇOIS BELZILE, Université Laval, Quebec City, Quebec , Canada.; RICARDO VILELA ABDELNOOR, CNPSO; FRANCISMAR CORREA MARCELINO GUIMARA, CNPSO. |
Título: |
Genome-wide association study for resistance to the Meloidogyne javanica causing root-knot nematode in soybean. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Theoretical and Applied Genetics, v. 134, p. 777-792, 2021. |
DOI: |
https://doi.org/10.1007/s00122-020-03723-9 |
Idioma: |
Inglês |
Notas: |
Artigo de acesso aberto. |
Conteúdo: |
Key message A locus on chromosome 13, containing multiple TIR-NB-LRR genes and SNPs associated with M. javanica resistance, was identified using a combination of GWAS, resequencing, genetic mapping and expression profiling. Abstract Meloidogyne javanica, a root-knot nematode, is an important problem in soybean-growing areas, leading to severe yield losses. Some accessions have been identified carrying resistance loci to this nematode. In this study, a set of 317 soybean accessions was characterized for resistance to M. javanica. A genome-wide association study was performed using SNPs from genotyping-by-sequencing, and a region of 29.2 kb on chromosome 13 was identified. An analysis of haplotypes showed that SNPs were able to discriminate between susceptible and resistant accessions, with 25 accessions sharing the haplotype associated with resistance. Furthermore, five accessions that exhibited resistance without carrying this haplotype may carry different loci conferring resistance to M. javanica. We also conducted the screening of the SNPs in the USDA soybean germplasm, revealing that several soybean accessions previously reported as resistant to other nematodes also shared the resistance haplotype on chromosome 13. Two SNP-based TaqMan® assays were developed and validated in two panels of soybean cultivars and in biparental populations. In silico analysis of the region associated with resistance identified the occurrence of genes with structural similarity with classical major resistance genes (NBS-LRR genes). Specifically, several nonsynonymous SNPs were observed in Glyma.13g194800 and Glyma.13g194900. The expression profile of these candidate genes demonstrated that the two gene models were up-regulated in the resistance source PI 505,099 after nematode infection. Overall, the SNPs associated with resistance and the genes identified constitute an important tool for introgression of resistance to the root-knot nematode by marker-assisted selection in soybean breeding programs. MenosKey message A locus on chromosome 13, containing multiple TIR-NB-LRR genes and SNPs associated with M. javanica resistance, was identified using a combination of GWAS, resequencing, genetic mapping and expression profiling. Abstract Meloidogyne javanica, a root-knot nematode, is an important problem in soybean-growing areas, leading to severe yield losses. Some accessions have been identified carrying resistance loci to this nematode. In this study, a set of 317 soybean accessions was characterized for resistance to M. javanica. A genome-wide association study was performed using SNPs from genotyping-by-sequencing, and a region of 29.2 kb on chromosome 13 was identified. An analysis of haplotypes showed that SNPs were able to discriminate between susceptible and resistant accessions, with 25 accessions sharing the haplotype associated with resistance. Furthermore, five accessions that exhibited resistance without carrying this haplotype may carry different loci conferring resistance to M. javanica. We also conducted the screening of the SNPs in the USDA soybean germplasm, revealing that several soybean accessions previously reported as resistant to other nematodes also shared the resistance haplotype on chromosome 13. Two SNP-based TaqMan® assays were developed and validated in two panels of soybean cultivars and in biparental populations. In silico analysis of the region associated with resistance identified the occurrence of genes with structural similarity with classical ... Mostrar Tudo |
Thesagro: |
Galha; Genoma; Meloidogyne Javanica; Nematóide; Resistência; Soja. |
Thesaurus NAL: |
Genome-wide association study; Resistance mechanisms; Root-knot nematodes; Soybeans. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/222104/1/Alekcevetch2021-Article-Genome-wideAssociationStudyFor.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/222143/1/Alekcevetch2021-Article-Genome-wideAssociationStudyFor.pdf
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Marc: |
LEADER 03125naa a2200361 a 4500 001 2130887 005 2021-05-03 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1007/s00122-020-03723-9$2DOI 100 1 $aALEKCEVETCH, J. C. 245 $aGenome-wide association study for resistance to the Meloidogyne javanica causing root-knot nematode in soybean.$h[electronic resource] 260 $c2021 500 $aArtigo de acesso aberto. 520 $aKey message A locus on chromosome 13, containing multiple TIR-NB-LRR genes and SNPs associated with M. javanica resistance, was identified using a combination of GWAS, resequencing, genetic mapping and expression profiling. Abstract Meloidogyne javanica, a root-knot nematode, is an important problem in soybean-growing areas, leading to severe yield losses. Some accessions have been identified carrying resistance loci to this nematode. In this study, a set of 317 soybean accessions was characterized for resistance to M. javanica. A genome-wide association study was performed using SNPs from genotyping-by-sequencing, and a region of 29.2 kb on chromosome 13 was identified. An analysis of haplotypes showed that SNPs were able to discriminate between susceptible and resistant accessions, with 25 accessions sharing the haplotype associated with resistance. Furthermore, five accessions that exhibited resistance without carrying this haplotype may carry different loci conferring resistance to M. javanica. We also conducted the screening of the SNPs in the USDA soybean germplasm, revealing that several soybean accessions previously reported as resistant to other nematodes also shared the resistance haplotype on chromosome 13. Two SNP-based TaqMan® assays were developed and validated in two panels of soybean cultivars and in biparental populations. In silico analysis of the region associated with resistance identified the occurrence of genes with structural similarity with classical major resistance genes (NBS-LRR genes). Specifically, several nonsynonymous SNPs were observed in Glyma.13g194800 and Glyma.13g194900. The expression profile of these candidate genes demonstrated that the two gene models were up-regulated in the resistance source PI 505,099 after nematode infection. Overall, the SNPs associated with resistance and the genes identified constitute an important tool for introgression of resistance to the root-knot nematode by marker-assisted selection in soybean breeding programs. 650 $aGenome-wide association study 650 $aResistance mechanisms 650 $aRoot-knot nematodes 650 $aSoybeans 650 $aGalha 650 $aGenoma 650 $aMeloidogyne Javanica 650 $aNematóide 650 $aResistência 650 $aSoja 700 1 $aPASSIANOTTO, A. L. de L. 700 1 $aFERREIRA, E. G. C. 700 1 $aSANTOS, A. B. dos 700 1 $aSILVA, D. C. G. da 700 1 $aDIAS, W. P. 700 1 $aBELZILE, F. 700 1 $aABDELNOOR, R. V. 700 1 $aMARCELINO-GUIMARÃES, F. C. 773 $tTheoretical and Applied Genetics$gv. 134, p. 777-792, 2021.
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Embrapa Soja (CNPSO) |
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