| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Gado de Leite. |
|
Data corrente: |
16/12/2019 |
|
Data da última atualização: |
06/02/2024 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
CHIAVEGATTO, R. B.; CHAVES, A. L. A.; ROCHA, L. C.; BENITES, F. R. G.; PERUZZI, L.; TECHIO, V. H. |
|
Afiliação: |
RAQUEL BEZERRA CHIAVEGATTO, UFLA; Ana Luisa Arantes Chaves, UFLA; Laiane Corsini Rocha, UFLA; FLAVIO RODRIGO GANDOLFI BENITES, CNPGL; Lorenzo Peruzzi, Pisa University, Pisa, Italy; Vânia Helena Techio, UFLA. |
|
Título: |
Heterochromatin Bands and rDNA Sites Evolution in Polyploidization Events in Cynodon Rich. (Poaceae). |
|
Ano de publicação: |
2019 |
|
Fonte/Imprenta: |
Plant Molecular Biology Reporter, v. 37, n. 5-6, p. 477-487, 2019. |
|
DOI: |
https://doi.org/10.1007/s11105-019-01173-2 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Cynodon is a genus with a wide distribution in tropical and subtropical areas. Ploidy levels in Cynodon range from diploid to hexaploid; hence, polyploidy is the most important driver of chromosome numbervariation in this genus. After polyploidization, structural rearrangements such as deletions, insertion, or duplications of DNA sequences frequently occur, allowingvariation of chromosome morphology, size, and number. These events might result in a wide diversity of karyotypes, contributing to reproductive isolation, and consequently to speciation. In this study, we investigate the karyotype variation of Cynodon based on comparative cytogenetic analyses. We conducted chromosome counts, DNA quantification, CMA/DAPI double staining, and FISH mapping of 5S and 35S rDNA sites. Cytomolecular data were analyzed in a phylogenetic framework, in order to trace the evolutionary history of the karyotype variation considering polyploidy events in this group. Our results indicate that the most recent common ancestor of Cynodon had two 35S and 5S rDNA sites,two CMA bands,nine DAPI+ bands on the long arm, five DAPI+ bands on the short arm, and three DAPI+ bands in the pericentromeric region. During polyploidization events, therewere losses and gains of heterochromatic sequences mainly on the short arms and centromeric regions. |
|
Palavras-Chave: |
Chromossome evolution; Forage grass; Karyotype variation; Ploidy level. |
|
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
|
Marc: |
LEADER 02102naa a2200241 a 4500
001 2116967
005 2024-02-06
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s11105-019-01173-2$2DOI
100 1 $aCHIAVEGATTO, R. B.
245 $aHeterochromatin Bands and rDNA Sites Evolution in Polyploidization Events in Cynodon Rich. (Poaceae).$h[electronic resource]
260 $c2019
520 $aCynodon is a genus with a wide distribution in tropical and subtropical areas. Ploidy levels in Cynodon range from diploid to hexaploid; hence, polyploidy is the most important driver of chromosome numbervariation in this genus. After polyploidization, structural rearrangements such as deletions, insertion, or duplications of DNA sequences frequently occur, allowingvariation of chromosome morphology, size, and number. These events might result in a wide diversity of karyotypes, contributing to reproductive isolation, and consequently to speciation. In this study, we investigate the karyotype variation of Cynodon based on comparative cytogenetic analyses. We conducted chromosome counts, DNA quantification, CMA/DAPI double staining, and FISH mapping of 5S and 35S rDNA sites. Cytomolecular data were analyzed in a phylogenetic framework, in order to trace the evolutionary history of the karyotype variation considering polyploidy events in this group. Our results indicate that the most recent common ancestor of Cynodon had two 35S and 5S rDNA sites,two CMA bands,nine DAPI+ bands on the long arm, five DAPI+ bands on the short arm, and three DAPI+ bands in the pericentromeric region. During polyploidization events, therewere losses and gains of heterochromatic sequences mainly on the short arms and centromeric regions.
653 $aChromossome evolution
653 $aForage grass
653 $aKaryotype variation
653 $aPloidy level
700 1 $aCHAVES, A. L. A.
700 1 $aROCHA, L. C.
700 1 $aBENITES, F. R. G.
700 1 $aPERUZZI, L.
700 1 $aTECHIO, V. H.
773 $tPlant Molecular Biology Reporter$gv. 37, n. 5-6, p. 477-487, 2019.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Pantanal. |
|
Data corrente: |
18/08/2015 |
|
Data da última atualização: |
28/10/2019 |
|
Tipo da produção científica: |
Artigo em Anais de Congresso |
|
Autoria: |
NOGUEIRA, E.; SILVA, C. S.; SILVA, J. C. B.; GARCIA, W. R.; ANACHE, N. A.; SILVA, K. C.; POTIENS, J. R.; SILVA, E. V. da C. e. |
|
Afiliação: |
ERIKLIS NOGUEIRA, CPAP; CAMILE SANCHES SILVA, UFMS; JULIANA CORREA BORGES SILVA, CPAP; WAGNER RODRIGUES GARCIA, UFMS; NATHÁLIA ALBANEZE ANACHE, UFMS; KARINE CASANOVA SILVA, UFMS; JOSÉ ROBERTO POTIENS, SELEON Biotecnologia; ELIANE VIANA DA COSTA E SILVA, UFMS. |
|
Título: |
Qualidade do sêmen e resultados em programas de IATF em bovinos. |
|
Ano de publicação: |
2019 |
|
Fonte/Imprenta: |
In: REUNIÃO ANUAL DA ABRAA, 4., 2019, Campo Grande, MS. Anais... Campo Grande, MS: UFMS, 2019. |
|
Páginas: |
p. 28-37. |
|
Idioma: |
Português |
|
Conteúdo: |
The ability to predict male fertility is highly desirable for bulls used in AI. Timed artificial insemination (TAI) represents a breakthrough in the use of AI in Brazil and other countries. Numerous causes contribute to the wide range of results and/or unsatisfactory pregnancy rates in TAI programs, highlighting the factors inherent in the bovine female in addition to several factors inherent to quality of semen used, and in regarding to it, differences reported in fertility could be attributed to variation in sperm qualitative characteristics. Consequently, the success of bovine AI programs largely depends on the use of good quality semen. When only high fertility bulls are used, better conception rates are achieved, reducing costs of reproductive programs. Thus, some authors have shown that semen used in TAI has great impact on pregnancy rates, and various biomarkers of sperm quality are required to predict the fertility of bull spermatozoa. We will discuss results in Brazilian TAI programs, and different methods of post thaw semen evaluation and relations with the P/AI cows to identify the candidate predictors of conception rate. |
|
Thesagro: |
Inseminação Artificial; Reprodução Animal; Sêmen. |
|
Thesaurus NAL: |
Animal reproduction; Artificial insemination. |
|
Categoria do assunto: |
G Melhoramento Genético |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/199607/1/Qualidade-semen-2019.pdf
|
|
Marc: |
LEADER 01955nam a2200265 a 4500
001 2022239
005 2019-10-28
008 2019 bl uuuu u00u1 u #d
100 1 $aNOGUEIRA, E.
245 $aQualidade do sêmen e resultados em programas de IATF em bovinos.$h[electronic resource]
260 $aIn: REUNIÃO ANUAL DA ABRAA, 4., 2019, Campo Grande, MS. Anais... Campo Grande, MS: UFMS$c2019
300 $ap. 28-37.
520 $aThe ability to predict male fertility is highly desirable for bulls used in AI. Timed artificial insemination (TAI) represents a breakthrough in the use of AI in Brazil and other countries. Numerous causes contribute to the wide range of results and/or unsatisfactory pregnancy rates in TAI programs, highlighting the factors inherent in the bovine female in addition to several factors inherent to quality of semen used, and in regarding to it, differences reported in fertility could be attributed to variation in sperm qualitative characteristics. Consequently, the success of bovine AI programs largely depends on the use of good quality semen. When only high fertility bulls are used, better conception rates are achieved, reducing costs of reproductive programs. Thus, some authors have shown that semen used in TAI has great impact on pregnancy rates, and various biomarkers of sperm quality are required to predict the fertility of bull spermatozoa. We will discuss results in Brazilian TAI programs, and different methods of post thaw semen evaluation and relations with the P/AI cows to identify the candidate predictors of conception rate.
650 $aAnimal reproduction
650 $aArtificial insemination
650 $aInseminação Artificial
650 $aReprodução Animal
650 $aSêmen
700 1 $aSILVA, C. S.
700 1 $aSILVA, J. C. B.
700 1 $aGARCIA, W. R.
700 1 $aANACHE, N. A.
700 1 $aSILVA, K. C.
700 1 $aPOTIENS, J. R.
700 1 $aSILVA, E. V. da C. e.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Pantanal (CPAP) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
