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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
17/01/2017 |
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Data da última atualização: |
21/02/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BARAÚNA, A. C.; ROUWS, L. F. M.; ARAUJO, J. L. S. de; REIS JUNIOR, F. B. dos; IANNETTA, P. P. M.; MALUK, M.; GOI, S. R.; REIS, V. M.; JAMES, E. K.; ZILLI, J. E. |
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Afiliação: |
ALEXANDRE C. BARAÚNA, UFRRJ; LUC FELICIANUS MARIE ROUWS, CNPAB; JEAN LUIZ SIMOES DE ARAUJO, CNPAB; FABIO BUENO DOS REIS JUNIOR, CPAC; PIETRO P. M. IANNETA, THE JAMES HUTTON INSITTITUE, INVERGOWRIE, DUNDEE, UK; MARTA MALUC, THE JAMES HUTTON INSTITUTE, INVERGOWRIE, DUNDEE, UK; SILVIA R. GOI, UFRRJ; VERONICA MASSENA REIS, CNPAB; EUAN K. JAMES, THE JAMES HUTTON INSTITUTE, INVERGOWRIE, DUNDEE, UK; JERRI EDSON ZILLI, CNPAB. |
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Título: |
Rhizobium altiplani sp. nov., isolated from effective nodules on Mimosa pudica growing in untypically alkaline soil in central Brazil. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
International Journal of Systematic and Evolutionary Microbiology, v. 66, p. 1-7, 2016. |
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DOI: |
10.1099/ijsem.0.001322 |
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Idioma: |
Inglês |
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Conteúdo: |
Root nodule bacteria were isolated from nodules on Mimosa pudica L. growing in neutral?alkaline soils from the Distrito Federal in central Brazil. The 16S rRNA gene sequence analysis of 10 strains placed them into the genus Rhizobium with the closest neighbouring species (each with 99% similarity) being Rhizobium grahamii, Rhizobium cauense, Rhizobium mesoamericanum and Rhizobium tibeticum. This high similarity, however, was not confirmed by multi-locus sequence analysis (MLSA) using three housekeeping genes (recA, glnII and rpoB), which revealed R. mesoamericanum CCGE 501T to be the closest type strain (92% sequence similarity or less). Chemotaxonomic data, including fatty acid profiles [with majority being C19 : 0cyclo !8c and ummed feature 8 (C18 : 1!7c/C18 : 1!6c)], DNA G+C content (57.6 mol%), and carbon compound utilization patterns supported the placement of the novel strains in the genus Rhizobium. Results of average nucleotide identity (ANI) differentiated the novel strains from the closest species of the genus Rhizobium, R. mesoamericanum, R. grahamii and R. tibeticum with 89.0, 88.1 and 87.8% similarity, respectively. The symbiotic genes essential for nodulation (nodC) and nitrogen fixation (nifH) were most similar (99?100 %) to those of R. mesoamericanum, another Mimosa-nodulating species. Based on the current data, these 10 strains represent a novel species of the genus Rhizobium for which the name Rhizobium altiplanisp. nov. is proposed. The type strain is BR 10423T (=HAMBI 3664T). MenosRoot nodule bacteria were isolated from nodules on Mimosa pudica L. growing in neutral?alkaline soils from the Distrito Federal in central Brazil. The 16S rRNA gene sequence analysis of 10 strains placed them into the genus Rhizobium with the closest neighbouring species (each with 99% similarity) being Rhizobium grahamii, Rhizobium cauense, Rhizobium mesoamericanum and Rhizobium tibeticum. This high similarity, however, was not confirmed by multi-locus sequence analysis (MLSA) using three housekeeping genes (recA, glnII and rpoB), which revealed R. mesoamericanum CCGE 501T to be the closest type strain (92% sequence similarity or less). Chemotaxonomic data, including fatty acid profiles [with majority being C19 : 0cyclo !8c and ummed feature 8 (C18 : 1!7c/C18 : 1!6c)], DNA G+C content (57.6 mol%), and carbon compound utilization patterns supported the placement of the novel strains in the genus Rhizobium. Results of average nucleotide identity (ANI) differentiated the novel strains from the closest species of the genus Rhizobium, R. mesoamericanum, R. grahamii and R. tibeticum with 89.0, 88.1 and 87.8% similarity, respectively. The symbiotic genes essential for nodulation (nodC) and nitrogen fixation (nifH) were most similar (99?100 %) to those of R. mesoamericanum, another Mimosa-nodulating species. Based on the current data, these 10 strains represent a novel species of the genus Rhizobium for which the name Rhizobium altiplanisp. nov. is proposed. The type strain is BR 1... Mostrar Tudo |
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Palavras-Chave: |
Average nucleotide identity; Bacterial species; BR 10423; Multi locus sequence analysis; Rizóbio. |
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Thesagro: |
Taxonomia. |
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Thesaurus Nal: |
Taxonomy. |
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Categoria do assunto: |
V Taxonomia de Organismos |
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Marc: |
LEADER 02517naa a2200325 a 4500
001 2060978
005 2017-02-21
008 2016 bl uuuu u00u1 u #d
024 7 $a10.1099/ijsem.0.001322$2DOI
100 1 $aBARAÚNA, A. C.
245 $aRhizobium altiplani sp. nov., isolated from effective nodules on Mimosa pudica growing in untypically alkaline soil in central Brazil.
260 $c2016
520 $aRoot nodule bacteria were isolated from nodules on Mimosa pudica L. growing in neutral?alkaline soils from the Distrito Federal in central Brazil. The 16S rRNA gene sequence analysis of 10 strains placed them into the genus Rhizobium with the closest neighbouring species (each with 99% similarity) being Rhizobium grahamii, Rhizobium cauense, Rhizobium mesoamericanum and Rhizobium tibeticum. This high similarity, however, was not confirmed by multi-locus sequence analysis (MLSA) using three housekeeping genes (recA, glnII and rpoB), which revealed R. mesoamericanum CCGE 501T to be the closest type strain (92% sequence similarity or less). Chemotaxonomic data, including fatty acid profiles [with majority being C19 : 0cyclo !8c and ummed feature 8 (C18 : 1!7c/C18 : 1!6c)], DNA G+C content (57.6 mol%), and carbon compound utilization patterns supported the placement of the novel strains in the genus Rhizobium. Results of average nucleotide identity (ANI) differentiated the novel strains from the closest species of the genus Rhizobium, R. mesoamericanum, R. grahamii and R. tibeticum with 89.0, 88.1 and 87.8% similarity, respectively. The symbiotic genes essential for nodulation (nodC) and nitrogen fixation (nifH) were most similar (99?100 %) to those of R. mesoamericanum, another Mimosa-nodulating species. Based on the current data, these 10 strains represent a novel species of the genus Rhizobium for which the name Rhizobium altiplanisp. nov. is proposed. The type strain is BR 10423T (=HAMBI 3664T).
650 $aTaxonomy
650 $aTaxonomia
653 $aAverage nucleotide identity
653 $aBacterial species
653 $aBR 10423
653 $aMulti locus sequence analysis
653 $aRizóbio
700 1 $aROUWS, L. F. M.
700 1 $aARAUJO, J. L. S. de
700 1 $aREIS JUNIOR, F. B. dos
700 1 $aIANNETTA, P. P. M.
700 1 $aMALUK, M.
700 1 $aGOI, S. R.
700 1 $aREIS, V. M.
700 1 $aJAMES, E. K.
700 1 $aZILLI, J. E.
773 $tInternational Journal of Systematic and Evolutionary Microbiology$gv. 66, p. 1-7, 2016.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Biblioteca |
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Origem |
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Classificação |
Cutter |
Registro |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
25/04/2014 |
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Data da última atualização: |
07/05/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 2 |
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Autoria: |
MENEZES, V. O.; LOPES, S. J.; TEDESCO, S. B.; HENNING, F. A.; ZEN, H. D.; HENNING, L. M. M. |
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Afiliação: |
VANESSA OCOM MENEZES, UFSM; SIDINEI JOSE LOPES, UFSM; SOLANGE BOSIO TEDESCO, UFSM; FERNANDO AUGUSTO HENNING, CNPSO; HUMBERTO DAVI ZEN, UFSM; LILIANE MARCIA MERTZ HENNING, CNPSO. |
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Título: |
Cytogenetic analysis of wheat seeds submitted to artificial aging stress. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Journal of Seed Science, Viçosa, MG, v. 36, n. 1, p. 71-78, Mar. 2014. |
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ISSN: |
2317-1537 |
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DOI: |
10.1590/S2317-15372014000100009 |
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Idioma: |
Inglês |
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Conteúdo: |
Several studies have been developed to understand the physiology of seed deterioration, however, the initial steps of the deterioration process are not completely clear. Seed vigor and viability losses are also associated with genetic material damage. This study was carried out to detect cytogenetic and physiological alterations occurring during the deterioration process of wheat seeds, due to artificial aging stress. Two cultivars, Ônix and Fundacep Campo Real, were submitted to six different treatments: control (T1), 24 (T2), 48 (T3), 72 (T4), 96 (T5) and 120 (T6) hours under artificial aging conditions: 42 °C and 100% relative humidity. Germination and vigor tests (First Count of Germination, Electrical Conductivity, Seedling Emergence in the Field and Emergence Speed Index) were performed. Cytogenetic evaluations were performed through smear technique for root tips, stained with 2% acetic orcein. Total number of cells under division and mitotic index (MI) were determined. According to results, vigor and mitotic index were affected due to deterioration process induced by artificial aging stress. A reduced number of dividing cells were observed in seeds submitted to prolonged period of aging. Chromosomal abnormalities in mitotic cells of aged seeds were detected with the occurrence of micronuclei, chromosome breaks and bridges. |
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Thesagro: |
Deterioração; Semente; Trigo. |
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Thesaurus NAL: |
Deterioration; Seeds; Wheat. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/101458/1/Cytogenetic-analysis-of-wheat-seeds-submitted-to-artificial-aging-stress.pdf
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Marc: |
LEADER 02104naa a2200277 a 4500
001 1985154
005 2014-05-07
008 2014 bl uuuu u00u1 u #d
022 $a2317-1537
024 7 $a10.1590/S2317-15372014000100009$2DOI
100 1 $aMENEZES, V. O.
245 $aCytogenetic analysis of wheat seeds submitted to artificial aging stress.
260 $c2014
520 $aSeveral studies have been developed to understand the physiology of seed deterioration, however, the initial steps of the deterioration process are not completely clear. Seed vigor and viability losses are also associated with genetic material damage. This study was carried out to detect cytogenetic and physiological alterations occurring during the deterioration process of wheat seeds, due to artificial aging stress. Two cultivars, Ônix and Fundacep Campo Real, were submitted to six different treatments: control (T1), 24 (T2), 48 (T3), 72 (T4), 96 (T5) and 120 (T6) hours under artificial aging conditions: 42 °C and 100% relative humidity. Germination and vigor tests (First Count of Germination, Electrical Conductivity, Seedling Emergence in the Field and Emergence Speed Index) were performed. Cytogenetic evaluations were performed through smear technique for root tips, stained with 2% acetic orcein. Total number of cells under division and mitotic index (MI) were determined. According to results, vigor and mitotic index were affected due to deterioration process induced by artificial aging stress. A reduced number of dividing cells were observed in seeds submitted to prolonged period of aging. Chromosomal abnormalities in mitotic cells of aged seeds were detected with the occurrence of micronuclei, chromosome breaks and bridges.
650 $aDeterioration
650 $aSeeds
650 $aWheat
650 $aDeterioração
650 $aSemente
650 $aTrigo
700 1 $aLOPES, S. J.
700 1 $aTEDESCO, S. B.
700 1 $aHENNING, F. A.
700 1 $aZEN, H. D.
700 1 $aHENNING, L. M. M.
773 $tJournal of Seed Science, Viçosa, MG$gv. 36, n. 1, p. 71-78, Mar. 2014.
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