Contribuições para a embriogênese somática indireta em Eugenia involucrata e para a caracterização molecular de indivíduos de Carya illinoinensis
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional Manancial UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/13330 |
Resumo: | Due to a raise in forest ecosystem alterations, either by anthropic or natural action, there has been a need for knowledge and conservation of Brazilian forest genetic resources, since environment preservation has a great social and economical interest. Eugenia involucrata DC. (Cerejeira-do-mato), a Brazilian forest fruit species which has been used in projects for the recovery of degraded areas and legal and permanent reservation areas can as well be an alternative income for family agriculture, through the use of its non-timber products. However, besides this species having recalcitrant seeds, which lose viability fast, there is a lack of scientific and technological information that subsidize its sustainable use. Because of this, the present paper aimed at selecting efficient methods of calogenesis induction from leaf explants, addressing indirect somatic embryogenesis and, simultaneously, the improvement of this species in vitro cultivation techniques. In regard to calogenesis in vitro, microbial contamination and callus induction on leaf discs of Eugenia involucrata were assessed and selected, about phenolic oxidation: the combinations of 2,4-dichlorophenoxyacetic acid (2,4-D) and Thidiazuron (TDZ) concentrations, the same way, the embryogenic potential of the calluses formed was assessed, through a histochemical test; sucrose concentrations; the combinations of sucrose and TDZ concentrations; and, also, the reduction of sucrose and 2,4-D and TDZ phytoregulators concentrations. All of them added to MS nutrient medium. As main results, the following stand out: the phenolic oxidation was higher in the presence of 2,4-D, and the combination of 2,4-D and TDZ was not significant in callus formation, only cytokinin, however the presence of auxin in the nutrient medium is essential for calogenesis. The same way, the calluses presented embryogenic potential with a friable aspect and nodular structures; TDZ has influenced the microbial contamination, once in its presence there is a smaller occurrence of bacterial colonies and fungal mycelia. Sucrose and TDZ, when applied in isolation, influenced the formation and quality of the calluses, however, the interaction between them was not significant. The decrease of sucrose and phytoregulators 2,4-D and TDZ did not affect the tested variables. The best combinations of 2,4-D and TDZ for calogenesis on leaf discs of Eugenia involucrata are 5 and 5 μM and 5 and 10 μM, respectively. The most indicated concentration of TDZ is 5 μM, for it being the concentration with which the calluses have an improved quality and, simultaneously, contributes for cost reduction. The most efficient sucrose concentrations for calogenesis are 30 or 90 gL-¹, being that the calluses quality is superior in the bigger one. The calogenic formation on leaf discs of Eugenia involucrata aiming at an indirect somatic embryogenesis is possible. |
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2018-06-08T18:32:42Z2018-06-08T18:32:42Z2017-02-22http://repositorio.ufsm.br/handle/1/13330Due to a raise in forest ecosystem alterations, either by anthropic or natural action, there has been a need for knowledge and conservation of Brazilian forest genetic resources, since environment preservation has a great social and economical interest. Eugenia involucrata DC. (Cerejeira-do-mato), a Brazilian forest fruit species which has been used in projects for the recovery of degraded areas and legal and permanent reservation areas can as well be an alternative income for family agriculture, through the use of its non-timber products. However, besides this species having recalcitrant seeds, which lose viability fast, there is a lack of scientific and technological information that subsidize its sustainable use. Because of this, the present paper aimed at selecting efficient methods of calogenesis induction from leaf explants, addressing indirect somatic embryogenesis and, simultaneously, the improvement of this species in vitro cultivation techniques. In regard to calogenesis in vitro, microbial contamination and callus induction on leaf discs of Eugenia involucrata were assessed and selected, about phenolic oxidation: the combinations of 2,4-dichlorophenoxyacetic acid (2,4-D) and Thidiazuron (TDZ) concentrations, the same way, the embryogenic potential of the calluses formed was assessed, through a histochemical test; sucrose concentrations; the combinations of sucrose and TDZ concentrations; and, also, the reduction of sucrose and 2,4-D and TDZ phytoregulators concentrations. All of them added to MS nutrient medium. As main results, the following stand out: the phenolic oxidation was higher in the presence of 2,4-D, and the combination of 2,4-D and TDZ was not significant in callus formation, only cytokinin, however the presence of auxin in the nutrient medium is essential for calogenesis. The same way, the calluses presented embryogenic potential with a friable aspect and nodular structures; TDZ has influenced the microbial contamination, once in its presence there is a smaller occurrence of bacterial colonies and fungal mycelia. Sucrose and TDZ, when applied in isolation, influenced the formation and quality of the calluses, however, the interaction between them was not significant. The decrease of sucrose and phytoregulators 2,4-D and TDZ did not affect the tested variables. The best combinations of 2,4-D and TDZ for calogenesis on leaf discs of Eugenia involucrata are 5 and 5 μM and 5 and 10 μM, respectively. The most indicated concentration of TDZ is 5 μM, for it being the concentration with which the calluses have an improved quality and, simultaneously, contributes for cost reduction. The most efficient sucrose concentrations for calogenesis are 30 or 90 gL-¹, being that the calluses quality is superior in the bigger one. The calogenic formation on leaf discs of Eugenia involucrata aiming at an indirect somatic embryogenesis is possible.Em decorrência do aumento nas alterações dos ecossistemas florestais, por ação natural ou antrópica, tem havido uma demanda por conhecimento e conservação de recursos genéticos florestais do Brasil, haja vista que é de grande interesse social e econômico a preservação do ambiente. A Eugenia involucrata DC. (Cerejeira-do-mato) por ser uma espécie frutífera florestal, nativa do Brasil, que vem sendo utilizada em projetos de recuperação de áreas degradadas, em áreas de reserva legal e de preservação permanente, pode servir, também, como uma alternativa de renda para a agricultura familiar, por meio da utilização de seus produtos não madeireiros. Entretanto, além dessa espécie possuir sementes recalcitrantes, que perdem a viabilidade com rapidez, há carência de informações científicas e tecnológicas que subsidiem a sua utilização sustentável. Em virtude disso, o presente trabalho objetivou selecionar métodos eficientes de indução à calogênese a partir de explantes foliares, visando à embriogênese somática indireta, e, simultaneamente, o aperfeiçoamento de técnicas de cultivo in vitro dessa espécie. No que diz respeito à calogênese in vitro, foram avaliadas e selecionadas, sobre a oxidação fenólica, a contaminação microbiana e a indução de calos em discos foliares de Eugenia involucrata: as combinações de concentrações de ácido 2,4- diclorofenoxiacético (2,4-D) e Thidiazuron (TDZ), bem como foi avaliado o potencial embriogênico, por meio de teste histoquímico, dos calos formados; as concentrações de sacarose; as combinações de concentrações de sacarose e TDZ; e, ainda, a diminuição de concentrações de sacarose e dos fitorreguladores 2,4-D e TDZ. Todos adicionados ao meio nutritivo MS. Como principais resultados destacam-se: a oxidação fenólica foi maior na presença do 2,4-D, e a combinação de 2,4-D e TDZ não foi significativa na formação de calos, somente a citocinina, entretanto a presença da auxina no meio nutritivo é essencial para a calogênese. Igualmente, os calos apresentaram potencial embriogênico com aspecto friável e estruturas nodulares; o TDZ influenciou a contaminação microbiana, já que na sua presença há menor incidência de colônias bacterianas e micélios fúngicos. A sacarose e o TDZ, quando empregados isoladamente, influenciaram a formação e a qualidade dos calos, entretanto, a interação entre eles não foi significativa. A diminuição da sacarose e dos fitorreguladores 2,4-D e TDZ não afetaram as variáveis testadas. As melhores combinações de 2,4-D e TDZ para a calogênese em discos foliares de Eugenia involucrata são 5 e 5 μM ou 5 e 10 μM respectivamente. A concentração de TDZ mais indicada é de 5 μM, por ser a concentração em que os calos têm a qualidade incrementada, e, simultaneamente, contribui para a redução de custos. As concentrações de sacarose mais eficientes para a calogênese são 30 ou 90 gL-1, sendo que na maior, a qualidade dos calos é superior. É possível a formação calogênica em discos foliares de Eugenia involucrata visando à embriogênese somática indireta.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de Santa MariaCentro de Ciências RuraisPrograma de Pós-Graduação em Engenharia FlorestalUFSMBrasilRecursos Florestais e Engenharia FlorestalAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessCerejeira-do-matoCalogêneseCultura de tecidosCalogenesisTissue cultureCNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTALContribuições para a embriogênese somática indireta em Eugenia involucrata e para a caracterização molecular de indivíduos de Carya illinoinensisinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisReiniger, Lia Rejane Silveirahttp://lattes.cnpq.br/5739294882585391Stefenon, Valdir Marcoshttp://lattes.cnpq.br/6868213051236665Paim, Aline Ferreirahttp://lattes.cnpq.br/5813893425276768http://lattes.cnpq.br/2312241065716413Bittencourt, Larissa500200000003600809860fd-9f1f-4d0e-81fb-36d7e9781d1c7ba696a4-a316-4b05-9e06-0e394d6f85ee1c88dca6-51c2-497a-95a8-36df433f22c786ee298f-c904-4233-9c7f-36b52a5d234freponame:Repositório Institucional Manancial UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALDIS_PPGEF_2017_BITTENCOURT_LARISSA.pdfDIS_PPGEF_2017_BITTENCOURT_LARISSA.pdfDissertação de Mestradoapplication/pdf2391463http://repositorio.ufsm.br/bitstream/1/13330/1/DIS_PPGEF_2017_BITTENCOURT_LARISSA.pdfe14d0def5b055fd18b946071e6c3cf6fMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv |
Contribuições para a embriogênese somática indireta em Eugenia involucrata e para a caracterização molecular de indivíduos de Carya illinoinensis |
title |
Contribuições para a embriogênese somática indireta em Eugenia involucrata e para a caracterização molecular de indivíduos de Carya illinoinensis |
spellingShingle |
Contribuições para a embriogênese somática indireta em Eugenia involucrata e para a caracterização molecular de indivíduos de Carya illinoinensis Bittencourt, Larissa Cerejeira-do-mato Calogênese Cultura de tecidos Calogenesis Tissue culture CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
title_short |
Contribuições para a embriogênese somática indireta em Eugenia involucrata e para a caracterização molecular de indivíduos de Carya illinoinensis |
title_full |
Contribuições para a embriogênese somática indireta em Eugenia involucrata e para a caracterização molecular de indivíduos de Carya illinoinensis |
title_fullStr |
Contribuições para a embriogênese somática indireta em Eugenia involucrata e para a caracterização molecular de indivíduos de Carya illinoinensis |
title_full_unstemmed |
Contribuições para a embriogênese somática indireta em Eugenia involucrata e para a caracterização molecular de indivíduos de Carya illinoinensis |
title_sort |
Contribuições para a embriogênese somática indireta em Eugenia involucrata e para a caracterização molecular de indivíduos de Carya illinoinensis |
author |
Bittencourt, Larissa |
author_facet |
Bittencourt, Larissa |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Reiniger, Lia Rejane Silveira |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/5739294882585391 |
dc.contributor.referee1.fl_str_mv |
Stefenon, Valdir Marcos |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/6868213051236665 |
dc.contributor.referee2.fl_str_mv |
Paim, Aline Ferreira |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/5813893425276768 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/2312241065716413 |
dc.contributor.author.fl_str_mv |
Bittencourt, Larissa |
contributor_str_mv |
Reiniger, Lia Rejane Silveira Stefenon, Valdir Marcos Paim, Aline Ferreira |
dc.subject.por.fl_str_mv |
Cerejeira-do-mato Calogênese Cultura de tecidos |
topic |
Cerejeira-do-mato Calogênese Cultura de tecidos Calogenesis Tissue culture CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
dc.subject.eng.fl_str_mv |
Calogenesis Tissue culture |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
description |
Due to a raise in forest ecosystem alterations, either by anthropic or natural action, there has been a need for knowledge and conservation of Brazilian forest genetic resources, since environment preservation has a great social and economical interest. Eugenia involucrata DC. (Cerejeira-do-mato), a Brazilian forest fruit species which has been used in projects for the recovery of degraded areas and legal and permanent reservation areas can as well be an alternative income for family agriculture, through the use of its non-timber products. However, besides this species having recalcitrant seeds, which lose viability fast, there is a lack of scientific and technological information that subsidize its sustainable use. Because of this, the present paper aimed at selecting efficient methods of calogenesis induction from leaf explants, addressing indirect somatic embryogenesis and, simultaneously, the improvement of this species in vitro cultivation techniques. In regard to calogenesis in vitro, microbial contamination and callus induction on leaf discs of Eugenia involucrata were assessed and selected, about phenolic oxidation: the combinations of 2,4-dichlorophenoxyacetic acid (2,4-D) and Thidiazuron (TDZ) concentrations, the same way, the embryogenic potential of the calluses formed was assessed, through a histochemical test; sucrose concentrations; the combinations of sucrose and TDZ concentrations; and, also, the reduction of sucrose and 2,4-D and TDZ phytoregulators concentrations. All of them added to MS nutrient medium. As main results, the following stand out: the phenolic oxidation was higher in the presence of 2,4-D, and the combination of 2,4-D and TDZ was not significant in callus formation, only cytokinin, however the presence of auxin in the nutrient medium is essential for calogenesis. The same way, the calluses presented embryogenic potential with a friable aspect and nodular structures; TDZ has influenced the microbial contamination, once in its presence there is a smaller occurrence of bacterial colonies and fungal mycelia. Sucrose and TDZ, when applied in isolation, influenced the formation and quality of the calluses, however, the interaction between them was not significant. The decrease of sucrose and phytoregulators 2,4-D and TDZ did not affect the tested variables. The best combinations of 2,4-D and TDZ for calogenesis on leaf discs of Eugenia involucrata are 5 and 5 μM and 5 and 10 μM, respectively. The most indicated concentration of TDZ is 5 μM, for it being the concentration with which the calluses have an improved quality and, simultaneously, contributes for cost reduction. The most efficient sucrose concentrations for calogenesis are 30 or 90 gL-¹, being that the calluses quality is superior in the bigger one. The calogenic formation on leaf discs of Eugenia involucrata aiming at an indirect somatic embryogenesis is possible. |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017-02-22 |
dc.date.accessioned.fl_str_mv |
2018-06-08T18:32:42Z |
dc.date.available.fl_str_mv |
2018-06-08T18:32:42Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/13330 |
url |
http://repositorio.ufsm.br/handle/1/13330 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.cnpq.fl_str_mv |
500200000003 |
dc.relation.confidence.fl_str_mv |
600 |
dc.relation.authority.fl_str_mv |
809860fd-9f1f-4d0e-81fb-36d7e9781d1c 7ba696a4-a316-4b05-9e06-0e394d6f85ee 1c88dca6-51c2-497a-95a8-36df433f22c7 86ee298f-c904-4233-9c7f-36b52a5d234f |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Engenharia Florestal |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Recursos Florestais e Engenharia Florestal |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional Manancial UFSM instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Repositório Institucional Manancial UFSM |
collection |
Repositório Institucional Manancial UFSM |
bitstream.url.fl_str_mv |
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Repositório Institucional Manancial UFSM - Universidade Federal de Santa Maria (UFSM) |
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ouvidoria@ufsm.br |
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