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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
30/09/2009 |
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Data da última atualização: |
13/10/2009 |
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Autoria: |
BOLDRINI, K. R.; PAGLIARINI, M. S.; VALLE, C. B. D. |
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Afiliação: |
K. R. BOLDRINI, UEM; MARIA SUELY PAGLIARINI, UEM; CACILDA BORGES DO VALLE, CNPGC. |
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Título: |
Cell fusion and cytomixis during microsporogenesis in Brachiaria humidicola (Poaceae). |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
South African Journal of Botany, v.72, p.478-481, 2006. Issue 3. Short Communication. |
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Idioma: |
Português |
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Conteúdo: |
During cytological analysis of microsporogenesis in 28 polyploid accessions of Brachiaria humidicola (Poaceae) from the Embrapa Beef
Cattle germplasm collection for breeding purposes, cell fusions were recorded in two accessions and chromosome transfer among meiocytes in
one of them. Cell fusion between two to more than ten cells was recorded from prophase I to telophase II. In the syncyte, each nucleus maintained its integrity. In one of these accessions, cytomixis with characteristics never reported in any other plant species was recorded. It occurred among very small meiocytes that transferred the entire genome or part of it to normal meiocytes. Chromosome transfer occurred preferentially during telophase I and, during migration, chromatin showed structural alteration. Both abnormalities compromise pollen fertility. In the Brachiaria genus, polyploid accessions are, in general, apomictic, albeit pseudogamous. Consequently, fertile pollen is essential to fertilize the central nucleus of the embryo sac and ensure viable seeds production. Thus, accessions with high frequencies of meiotic abnormalities might be eliminated early from the breeding program. |
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Palavras-Chave: |
Braquiária; Microsporogênese. |
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Thesagro: |
Brachiaria Humidicola; Gramínea Forrageira; Melhoramento Genético Vegetal; Pastagem. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 01843naa a2200217 a 4500
001 1512791
005 2009-10-13
008 2006 bl --- 0-- u #d
100 1 $aBOLDRINI, K. R.
245 $aCell fusion and cytomixis during microsporogenesis in Brachiaria humidicola (Poaceae).
260 $c2006
520 $aDuring cytological analysis of microsporogenesis in 28 polyploid accessions of Brachiaria humidicola (Poaceae) from the Embrapa Beef Cattle germplasm collection for breeding purposes, cell fusions were recorded in two accessions and chromosome transfer among meiocytes in one of them. Cell fusion between two to more than ten cells was recorded from prophase I to telophase II. In the syncyte, each nucleus maintained its integrity. In one of these accessions, cytomixis with characteristics never reported in any other plant species was recorded. It occurred among very small meiocytes that transferred the entire genome or part of it to normal meiocytes. Chromosome transfer occurred preferentially during telophase I and, during migration, chromatin showed structural alteration. Both abnormalities compromise pollen fertility. In the Brachiaria genus, polyploid accessions are, in general, apomictic, albeit pseudogamous. Consequently, fertile pollen is essential to fertilize the central nucleus of the embryo sac and ensure viable seeds production. Thus, accessions with high frequencies of meiotic abnormalities might be eliminated early from the breeding program.
650 $aBrachiaria Humidicola
650 $aGramínea Forrageira
650 $aMelhoramento Genético Vegetal
650 $aPastagem
653 $aBraquiária
653 $aMicrosporogênese
700 1 $aPAGLIARINI, M. S.
700 1 $aVALLE, C. B. D.
773 $tSouth African Journal of Botany$gv.72, p.478-481, 2006. Issue 3. Short Communication.
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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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| Registros recuperados : 13 | |
| 5. |  | CUNHA, F. M.; BADINO, A.; FARINAS, C. S.; XIMENES, E.; LADISCH, M. R. Liquid hot water and steam explosion pretreatment of sugarcane bagasse for enzyme production by a sequential solid-state and submerged method. In: CONGRESSO BRASILEIRO DE ENGENHARIA QUÍMICA - COBEQ, 20.; ENCONTRO BRASILEIRO SOBRE O ENSINO DE ENGENHARIA QUÍMICA, 15., 2014, Florianópolis. Anais... Florianópolis: UFSC, 2014. Não paginado.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Instrumentação. |
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| 6. | | CUNHA, F. M.; BADINO, A. C.; FARINAS, C. S.; KREKE, T.; XIMENES, E.; LADISCH, M. Liquefaction of sugarcane bagasse for enzyme production. In: SYMPOSIUM ON BIOTECHNOLOGY FOR FUELS AND CHEMICALS, 36., 2014, Clearwater Beach, FL. Anais... Fairfax: Society for Industrial Microbiology and Biotechnology, 2014. p. 84| Tipo: Resumo em Anais de Congresso |
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| 7. | | CUNHA, F. M. KREKE, T. BADINO, A. C.; FARINAS, C. S.; XIMENES, E. LADISCH, M. R. Liquefaction of sugarcane bagasse for enzyme production. Bioresource Technology, Essex, v. 172, p. 249-252, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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| 8. | | LADISCH, M. R.; XIMENES, E.; FARINAS, C. S.; KIM, Y.; KO, J. K.; KREKE, T. Mechanisms of Lignin Derived Inhibition in Hydrolysis of Pretreated Biomass at Low Enzyme Loadings. In: SYMPOSIUM ON BIOTECHNOLOGY FOR FUELS AND CHEMICALS, 38., 2016, Baltimore. Papers. [S. l.: s. n.], 2016. P. 12-1.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Instrumentação. |
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| 9. | | FLORENCIO, C.; CUNHA, F. M.; BADINO, A. C.; FARINAS, C. S.; XIMENES, E.; LADISCH, M. R. Secretome analysis of Trichoderma reesei and Aspergillus nigercultivated by submerged and sequential fermentation processes:Enzyme production for sugarcane bagasse hydrolysis. Enzyme and Microbial Technology, [S. l.], v. 90, p. 53-60, 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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| 10. | | FLORENCIO, C.; CUNHA, F. M.; BADINO, A. C.; FARINAS, C. S.; XIMENES, E.; LADISCH, M. R. Secretome data from Trichoderma reesei and Aspergillus niger cultivated in submerged and sequential fermentation methods. Data in Brief, [S. l.], v. 8, p. 588-598, 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 4 |
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| 11. | | BUFFO, M. M.; FERREIRA, A. L. Z.; ALMEIDA, R. M. R. G.; FARINAS, C. S.; BADINO, A. C.; XIMENES, E. A.; LADISCH, M. R. Cellulolytic enzymes production guided by morphology engineering. Enzyme and Microbial Technology, v. 149, e109833, 2021. 1-8| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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| 12. | | HENGGE, N.; KIM, D.; MOSIER, N. S.; KIM, Y.; XIMENES, E.; LADISCH, M. R.; CUNHA, F.; BADINO, A. C.; FARINAS, C. S. Liquefaction of lignocellulose. In: AICHE ANNUAL MEETING, 2016. Abstracts... [S. l.: s. n.], 2016. n. 474787.| Tipo: Resumo em Anais de Congresso |
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| 13. | | SERRA, L. A.; CRUZ, R. G. da S.; GUTIERREZ, D. M. R.; CRUZ, A. J. G.; CANIZARES, C. A. T.; CHEN, X.; MOSIER, N.; THOMPSON, D.; ASTON, J.; DOOLEY, J.; SHARMA, P.; DE MARCO, J. L.; ALMEIDA, J. R. M. de; ERK, K.; XIMENES, E.; LADISCH, M. R. Screening method for Enzyme-based liquefaction of corn stover pellets at high solids. Bioresource Technology, v. 363, 127999, Nov., 2022.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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| Registros recuperados : 13 | |
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