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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
10/06/2022 |
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Data da última atualização: |
11/07/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ZANELLA, L. B.; DEGENHARDT, J.; STEINER, N.; TOMASI, J.; KESTRING, D. R.; QUOIRIN, M. |
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Afiliação: |
LAUDIANE BRUNA ZANELLA, Federal University of Parana; JULIANA DEGENHARDT GOLDBACH, CNPF; NEUSA STEINER, Federal University of Santa Catarina; JÉSSICA TOMASI, Federal University of Parana; DAIANE RIGONI, CNPF; MARGUERITE QUOIRIN, Federal University of Parana. |
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Título: |
Initiation of somatic embryogenesis in Pinus caribaea var. hondurensis using mature female gametophytes as explants. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
South African Journal of Botany, v. 149, p. 124-133, 2022. |
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DOI: |
https://doi.org/10.1016/j.sajb.2022.05.053 |
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Idioma: |
Português |
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Conteúdo: |
ABSTRACT: Due to the difficulties of harvesting immature cones in genetic breeding orchards, such as high costs and the considerable time required, this study aimed to evaluate the somatic embryogenesis (SE) initiation of Pinus caribaea var. hondurensis using the mature female gametophyte as the initial explant. The basic medium for embryogenesis initiation was composed of QL (Quoirin and Lepoivre, 1977) nutrients, sucrose, myo-inositol, glutamine, casein hydrolisate, thiamine, 2,4-D, BAP and agar. This medium was compared with DCR (Gupta and Durzan, 1985) and WV5 (Coke, 1996) media, supplemented or not with 0.1 g L?1 folic acid (FA). Afterwards, three concentrations of 2,4-D (10, 20 and 30 ?M) combined or not with BAP (2, 4 and 8 ?M) were tested. After 90 days the percentages of explants with embryogenic tissue (ET), embryo-like structures and oxidation were evaluated. We observed somatic tissue initiation` on mature female gametophytes. On QL medium supplemented with FA, the initiation was observed on up to 42% of female gametophytes. The combination of 10 ?M 2,4-D and 4 ?M BAP resulted in the highest initiation rate. The formation of ET was confirmed in all treatments by a histochemical test. Embryo-like structures developed on QL medium supplemented with FA, were first transferred to basic medium supplemented with 1.5 g L?1 AC for 30 days and finally to the same medium supplemented with 10% polyethylene glycol 3350 and 120 µM abscisic acid. The expression of SERK-1 and GER-1 genes was analyzed. SERK-1 was expressed only in the ET, while GER-1 was expressed in both the embryogenic and non-embryogenic tissues (non-ET). However, the somatic embryos studied through morphological and histochemical tests proved to be abnormal and did not develop further. MenosABSTRACT: Due to the difficulties of harvesting immature cones in genetic breeding orchards, such as high costs and the considerable time required, this study aimed to evaluate the somatic embryogenesis (SE) initiation of Pinus caribaea var. hondurensis using the mature female gametophyte as the initial explant. The basic medium for embryogenesis initiation was composed of QL (Quoirin and Lepoivre, 1977) nutrients, sucrose, myo-inositol, glutamine, casein hydrolisate, thiamine, 2,4-D, BAP and agar. This medium was compared with DCR (Gupta and Durzan, 1985) and WV5 (Coke, 1996) media, supplemented or not with 0.1 g L?1 folic acid (FA). Afterwards, three concentrations of 2,4-D (10, 20 and 30 ?M) combined or not with BAP (2, 4 and 8 ?M) were tested. After 90 days the percentages of explants with embryogenic tissue (ET), embryo-like structures and oxidation were evaluated. We observed somatic tissue initiation` on mature female gametophytes. On QL medium supplemented with FA, the initiation was observed on up to 42% of female gametophytes. The combination of 10 ?M 2,4-D and 4 ?M BAP resulted in the highest initiation rate. The formation of ET was confirmed in all treatments by a histochemical test. Embryo-like structures developed on QL medium supplemented with FA, were first transferred to basic medium supplemented with 1.5 g L?1 AC for 30 days and finally to the same medium supplemented with 10% polyethylene glycol 3350 and 120 µM abscisic acid. The expression of SERK-1 and G... Mostrar Tudo |
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Palavras-Chave: |
Embryogenic tissues; GER-1; QL medium; SERK-1; Tecidos embriogênicos. |
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Thesagro: |
Ácido Fólico. |
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Thesaurus Nal: |
Folic acid; Pinus caribaea var. hondurensis. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02667naa a2200289 a 4500
001 2143947
005 2022-07-11
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.sajb.2022.05.053$2DOI
100 1 $aZANELLA, L. B.
245 $aInitiation of somatic embryogenesis in Pinus caribaea var. hondurensis using mature female gametophytes as explants.$h[electronic resource]
260 $c2022
520 $aABSTRACT: Due to the difficulties of harvesting immature cones in genetic breeding orchards, such as high costs and the considerable time required, this study aimed to evaluate the somatic embryogenesis (SE) initiation of Pinus caribaea var. hondurensis using the mature female gametophyte as the initial explant. The basic medium for embryogenesis initiation was composed of QL (Quoirin and Lepoivre, 1977) nutrients, sucrose, myo-inositol, glutamine, casein hydrolisate, thiamine, 2,4-D, BAP and agar. This medium was compared with DCR (Gupta and Durzan, 1985) and WV5 (Coke, 1996) media, supplemented or not with 0.1 g L?1 folic acid (FA). Afterwards, three concentrations of 2,4-D (10, 20 and 30 ?M) combined or not with BAP (2, 4 and 8 ?M) were tested. After 90 days the percentages of explants with embryogenic tissue (ET), embryo-like structures and oxidation were evaluated. We observed somatic tissue initiation` on mature female gametophytes. On QL medium supplemented with FA, the initiation was observed on up to 42% of female gametophytes. The combination of 10 ?M 2,4-D and 4 ?M BAP resulted in the highest initiation rate. The formation of ET was confirmed in all treatments by a histochemical test. Embryo-like structures developed on QL medium supplemented with FA, were first transferred to basic medium supplemented with 1.5 g L?1 AC for 30 days and finally to the same medium supplemented with 10% polyethylene glycol 3350 and 120 µM abscisic acid. The expression of SERK-1 and GER-1 genes was analyzed. SERK-1 was expressed only in the ET, while GER-1 was expressed in both the embryogenic and non-embryogenic tissues (non-ET). However, the somatic embryos studied through morphological and histochemical tests proved to be abnormal and did not develop further.
650 $aFolic acid
650 $aPinus caribaea var. hondurensis
650 $aÁcido Fólico
653 $aEmbryogenic tissues
653 $aGER-1
653 $aQL medium
653 $aSERK-1
653 $aTecidos embriogênicos
700 1 $aDEGENHARDT, J.
700 1 $aSTEINER, N.
700 1 $aTOMASI, J.
700 1 $aKESTRING, D. R.
700 1 $aQUOIRIN, M.
773 $tSouth African Journal of Botany$gv. 149, p. 124-133, 2022.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
22/01/2014 |
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Data da última atualização: |
09/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
TEIXEIRA, E. W.; SANTOS, L. G. DOS; SATTLER, A.; MESSAGE, D.; ALVES, M. L. T. M. F.; MARTINS, M. F.; GRASSI-SELLA, M. L. |
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Afiliação: |
ERICA WEINSTEIN TEIXEIRA, APTA; LUBIANE GUIMARAES DOS SANTOS, UFV; ARONI SATTLER, UFV; DEJAIR MESSAGE, UFERSA; MARIA LUISA T. M. F. ALVES, APTA; MARTA FONSECA MARTINS, CNPGL; MARINA LOPES GRASSI-SELLA, USP. |
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Título: |
Nosema ceranae has been present in Brazil for more than three decades infecting africanized honey bees. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Journal of Invertebrate Pathology, v. 114, n. 3, p. 250-254, 2013. |
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DOI: |
https://doi.org/10.1016/j.jip.2013.09.002 |
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Idioma: |
Inglês |
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Conteúdo: |
Until the mid-1990s, the only microsporidium known to infect bees of the genus Apis was Nosema apis. A second species, Nosema ceranae, was first identified in 1996 from Asian honey bees; it is postulated that this parasite was transmitted from the Asian honey bee, Apis cerana, to the European honey bee, Apis mellifera. Currently, N. ceranae is found on all continents and has often been associated with honey bee colony collapse and other reports of high bee losses. Samples of Africanized drones collected in 1979, preserved in alcohol, were analyzed by light microscopy to count spores and were subjected to DNA extraction, after which duplex PCR was conducted. All molecular analyses (triplicate) indicated that the drones were infected with both N. ceranae and N. apis. PCR products were sequenced and matched to sequences reported in the GenBank (Acc. Nos. JQ639316.1 and JQ639301.1). The venation pattern of the wings of these males was compared to those of the current population living in the same area and with the pattern of drones collected in 1968 from Ribeirão Preto, SP, Brazil, from a location close to where African swarms first escaped in 1956. The morphometric results indicated that the population collected in 1979 was significantly different from the current living population, confirming its antiquity. Considering that the use of molecular tools for identifying Nosema species is relatively recent, it is possible that previous reports of infections (which used only light microscopy, without ultrastructural analysis) wrongly identified N. ceranae as N. apis. Although we can conclude that N. ceranae has been affecting Africanized honeybees in Brazil for at least 34 years, the impact of this pathogen remains unclear. MenosUntil the mid-1990s, the only microsporidium known to infect bees of the genus Apis was Nosema apis. A second species, Nosema ceranae, was first identified in 1996 from Asian honey bees; it is postulated that this parasite was transmitted from the Asian honey bee, Apis cerana, to the European honey bee, Apis mellifera. Currently, N. ceranae is found on all continents and has often been associated with honey bee colony collapse and other reports of high bee losses. Samples of Africanized drones collected in 1979, preserved in alcohol, were analyzed by light microscopy to count spores and were subjected to DNA extraction, after which duplex PCR was conducted. All molecular analyses (triplicate) indicated that the drones were infected with both N. ceranae and N. apis. PCR products were sequenced and matched to sequences reported in the GenBank (Acc. Nos. JQ639316.1 and JQ639301.1). The venation pattern of the wings of these males was compared to those of the current population living in the same area and with the pattern of drones collected in 1968 from Ribeirão Preto, SP, Brazil, from a location close to where African swarms first escaped in 1956. The morphometric results indicated that the population collected in 1979 was significantly different from the current living population, confirming its antiquity. Considering that the use of molecular tools for identifying Nosema species is relatively recent, it is possible that previous reports of infections (which used only light m... Mostrar Tudo |
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Palavras-Chave: |
Patologia; PCR. |
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Thesagro: |
Abelha Africana; Nosema Apis. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 02528naa a2200253 a 4500
001 1977041
005 2022-08-09
008 2013 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.jip.2013.09.002$2DOI
100 1 $aTEIXEIRA, E. W.
245 $aNosema ceranae has been present in Brazil for more than three decades infecting africanized honey bees.$h[electronic resource]
260 $c2013
520 $aUntil the mid-1990s, the only microsporidium known to infect bees of the genus Apis was Nosema apis. A second species, Nosema ceranae, was first identified in 1996 from Asian honey bees; it is postulated that this parasite was transmitted from the Asian honey bee, Apis cerana, to the European honey bee, Apis mellifera. Currently, N. ceranae is found on all continents and has often been associated with honey bee colony collapse and other reports of high bee losses. Samples of Africanized drones collected in 1979, preserved in alcohol, were analyzed by light microscopy to count spores and were subjected to DNA extraction, after which duplex PCR was conducted. All molecular analyses (triplicate) indicated that the drones were infected with both N. ceranae and N. apis. PCR products were sequenced and matched to sequences reported in the GenBank (Acc. Nos. JQ639316.1 and JQ639301.1). The venation pattern of the wings of these males was compared to those of the current population living in the same area and with the pattern of drones collected in 1968 from Ribeirão Preto, SP, Brazil, from a location close to where African swarms first escaped in 1956. The morphometric results indicated that the population collected in 1979 was significantly different from the current living population, confirming its antiquity. Considering that the use of molecular tools for identifying Nosema species is relatively recent, it is possible that previous reports of infections (which used only light microscopy, without ultrastructural analysis) wrongly identified N. ceranae as N. apis. Although we can conclude that N. ceranae has been affecting Africanized honeybees in Brazil for at least 34 years, the impact of this pathogen remains unclear.
650 $aAbelha Africana
650 $aNosema Apis
653 $aPatologia
653 $aPCR
700 1 $aSANTOS, L. G. DOS
700 1 $aSATTLER, A.
700 1 $aMESSAGE, D.
700 1 $aALVES, M. L. T. M. F.
700 1 $aMARTINS, M. F.
700 1 $aGRASSI-SELLA, M. L.
773 $tJournal of Invertebrate Pathology$gv. 114, n. 3, p. 250-254, 2013.
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