Data/hora: 19/06/2024 17:40:52

Biblioteca(s): | Embrapa Agricultura Digital.
Tipo da produção científica: | Resumo em Anais de Congresso
Data corrente: | 09/01/2020
Data da última atualização: | 04/02/2020
Autoria: | ZANELLA, L.; DEGENHARDT-GOLDBACH, J.; GERHARDT, I. R.; BESPALHOK FILHO, J. C.
Afiliação: | LAUDIANE ZANELLA, UFPR; JULIANA DEGENHARDT GOLDBACH, CNPF; ISABEL RODRIGUES GERHARDT, CNPTIA; JOÃO CARLOS BESPALHOK FILHO, UFPR.
Título: | RNA interference supression of DOF transcription factor from Populus tremula x Populus alba.
Ano de publicação: | 2019
Fonte/Imprenta: | Pesquisa Florestal Brasileira, v. 39, e201902043, p. 322, 2019.
Idioma: | Inglês
Notas: | Na publicação: Isabel Gerhardt. Edição especial dos resumos do IUFRO World Congress, 25., 2019, Curitiba.
Conteúdo: | From the total biomass produced by plants, 70% is represented by cell wall, in which carbon is mainly accumulated in the secondary wall. Therefore, the understanding of the mechanisms that regulate cell wall synthesis and its modification through genetic engineering may lead to the increase of lignocellulosic biomass. Among several functions already attributed to the proteins of the Dof transcription factors, its relation with cell wall formation is one of the most studied. However, the mechanisms involved in this process are not fully elucidated. Populus is the most used model plant for studies with forest species, including functional genomics. The objective of this work was to silence one gene of the Dof family by RNAi in plants of Populus tremula x P. alba, and investigate its function, aiming at the future production of Eucalyptus and Pinus plants with higher biomass production. For this, a silencing vector was constructed with specific primers of a Dof family gene from Populus. To obtain the transgenic plants via Agrobacterium tumefaciens, root segments were used as initial explants. Fifteen events were obtained, and in twelve the Dof expression was suppressed at different levels, according to qPCR analyzes. Of these, on five the expression was highly suppressed, indicating that the gene was successfully silenced. In morphological evaluations after 90 days the events did not present phenotypic differences in relation to non transformed plants. Physiological and histochemical analyzes are underway to evaluate lignin and cellulose contents and structural changes in transformed plants.
Thesaurus Nal: | Populus alba; Populus tremula.
Categoria do assunto: | --
Registro original: | Embrapa Agricultura Digital (CNPTIA)
Exemplares: | CNPTIA - (20388-1) - UPC - PC - DD -  -  -  - DIS