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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
04/01/2024 |
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Data da última atualização: |
04/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CARVALHO, K. de; PETKOWICZ, C. L. O.; NAGASHIMA, G. T.; BESPALHOK FILHO, J. C.; VIEIRA, L. G. E.; PEREIRA, L. F. P.; DOMINGUES, D. S. |
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Afiliação: |
KENIA DE CARVALHO, INSTITUTO AGRONÔMICO DO PARANÁ; CARMEN L. O. PETKOWICZ, UNIVERSIDADE FEDERAL DO PARANÁ; GETULIO T. NAGASHIMA, INSTITUTO AGRONÔMICO DO PARANÁ; JOÃO C. BESPALHOK FILHO, UNIVERSIDADE FEDERAL DO PARANÁ; LUIZ G. E. VIEIRA, INSTITUTO AGRONÔMICO DO PARANÁ; LUIZ FILIPE PROTASIO PEREIRA, CNPCa; DOUGLAS S. DOMINGUES, INSTITUTO AGRONÔMICO DO PARANÁ. |
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Título: |
Homeologous genes involved in mannitol synthesis reveal unequal contributions in response to abiotic stress in Coffea arábica. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Molecular Genetics and Genomics, v. 289, n. 5, p. 951-963, 2014. |
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DOI: |
http://dx.doi.org/10.1007/s00438-014-0864-y |
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Idioma: |
Inglês |
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Conteúdo: |
Polyploid plants can exhibit transcriptional modulation in homeologous genes in response to abiotic stresses. Coffea arabica, an allotetraploid, accounts for 75 % of the world's coffee production. Extreme temperatures, salinity and drought limit crop productivity, which includes coffee plants. Mannitol is known to be involved in abiotic stress tolerance in higher plants. This study aimed to investigate the transcriptional responses of genes involved in mannitol biosynthesis and catabolism in C. arabica leaves under water deficit, salt stress and high temperature. Mannitol concentration was significantly increased in leaves of plants under drought and salinity, but reduced by heat stress. Fructose content followed the level of mannitol only in heat-stressed plants, suggesting the partitioning of the former into other metabolites during drought and salt stress conditions. Transcripts of the key enzymes involved in mannitol biosynthesis, CaM6PR, CaPMI and CaMTD, were modulated in distinct ways depending on the abiotic stress. Our data suggest that changes in mannitol accumulation during drought and salt stress in leaves of C. arabica are due, at least in part, to the increased expression of the key genes involved in mannitol biosynthesis. In addition, the homeologs of the Coffea canephora subgenome did not present the same pattern of overall transcriptional response, indicating differential regulation of these genes by the same stimulus. In this way, this study adds new information on the differential expression of C. arabica homeologous genes under adverse environmental conditions showing that abiotic stresses can influence the homeologous gene regulation pattern, in this case, mainly on those involved in mannitol pathway. MenosPolyploid plants can exhibit transcriptional modulation in homeologous genes in response to abiotic stresses. Coffea arabica, an allotetraploid, accounts for 75 % of the world's coffee production. Extreme temperatures, salinity and drought limit crop productivity, which includes coffee plants. Mannitol is known to be involved in abiotic stress tolerance in higher plants. This study aimed to investigate the transcriptional responses of genes involved in mannitol biosynthesis and catabolism in C. arabica leaves under water deficit, salt stress and high temperature. Mannitol concentration was significantly increased in leaves of plants under drought and salinity, but reduced by heat stress. Fructose content followed the level of mannitol only in heat-stressed plants, suggesting the partitioning of the former into other metabolites during drought and salt stress conditions. Transcripts of the key enzymes involved in mannitol biosynthesis, CaM6PR, CaPMI and CaMTD, were modulated in distinct ways depending on the abiotic stress. Our data suggest that changes in mannitol accumulation during drought and salt stress in leaves of C. arabica are due, at least in part, to the increased expression of the key genes involved in mannitol biosynthesis. In addition, the homeologs of the Coffea canephora subgenome did not present the same pattern of overall transcriptional response, indicating differential regulation of these genes by the same stimulus. In this way, this study adds new informa... Mostrar Tudo |
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Thesaurus Nal: |
Coffea arabica var. arabica; Coffea canephora var. laurentii; Mannitol; Polyploidy; Salt stress. |
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Categoria do assunto: |
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Marc: |
LEADER 02635naa a2200265 a 4500
001 2160453
005 2024-01-04
008 2014 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1007/s00438-014-0864-y$2DOI
100 1 $aCARVALHO, K. de
245 $aHomeologous genes involved in mannitol synthesis reveal unequal contributions in response to abiotic stress in Coffea arábica.$h[electronic resource]
260 $c2014
520 $aPolyploid plants can exhibit transcriptional modulation in homeologous genes in response to abiotic stresses. Coffea arabica, an allotetraploid, accounts for 75 % of the world's coffee production. Extreme temperatures, salinity and drought limit crop productivity, which includes coffee plants. Mannitol is known to be involved in abiotic stress tolerance in higher plants. This study aimed to investigate the transcriptional responses of genes involved in mannitol biosynthesis and catabolism in C. arabica leaves under water deficit, salt stress and high temperature. Mannitol concentration was significantly increased in leaves of plants under drought and salinity, but reduced by heat stress. Fructose content followed the level of mannitol only in heat-stressed plants, suggesting the partitioning of the former into other metabolites during drought and salt stress conditions. Transcripts of the key enzymes involved in mannitol biosynthesis, CaM6PR, CaPMI and CaMTD, were modulated in distinct ways depending on the abiotic stress. Our data suggest that changes in mannitol accumulation during drought and salt stress in leaves of C. arabica are due, at least in part, to the increased expression of the key genes involved in mannitol biosynthesis. In addition, the homeologs of the Coffea canephora subgenome did not present the same pattern of overall transcriptional response, indicating differential regulation of these genes by the same stimulus. In this way, this study adds new information on the differential expression of C. arabica homeologous genes under adverse environmental conditions showing that abiotic stresses can influence the homeologous gene regulation pattern, in this case, mainly on those involved in mannitol pathway.
650 $aCoffea arabica var. arabica
650 $aCoffea canephora var. laurentii
650 $aMannitol
650 $aPolyploidy
650 $aSalt stress
700 1 $aPETKOWICZ, C. L. O.
700 1 $aNAGASHIMA, G. T.
700 1 $aBESPALHOK FILHO, J. C.
700 1 $aVIEIRA, L. G. E.
700 1 $aPEREIRA, L. F. P.
700 1 $aDOMINGUES, D. S.
773 $tMolecular Genetics and Genomics$gv. 289, n. 5, p. 951-963, 2014.
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Embrapa Café (CNPCa) |
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| Registros recuperados : 5 | |
| 4. |  | SANTOS, T. B. dos; BUDZINSKI, I. G. F.; MARUR, C. J.; PETKOWICZ, C. L. O.; PEREIRA, L. F. P.; VIEIRA, L. G. E. Expression of three galactinol synthase isoforms in Coffea arabica L. and accumulation of raffinose and stachyose in response to abiotic stresses. Plant Physiology and Biochemistry, v. 49, n. 4, p. 441-448, 2011.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Café. |
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| 5. | | CARVALHO, K. de; PETKOWICZ, C. L. O.; NAGASHIMA, G. T.; BESPALHOK FILHO, J. C.; VIEIRA, L. G. E.; PEREIRA, L. F. P.; DOMINGUES, D. S. Homeologous genes involved in mannitol synthesis reveal unequal contributions in response to abiotic stress in Coffea arábica. Molecular Genetics and Genomics, v. 289, n. 5, p. 951-963, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Café. |
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| Registros recuperados : 5 | |
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