| Texto completo | |
| Autor(es): |
de Oliveira, Leandro Francisco
[1]
;
dos Santos, Andre Luis Wendt
[1]
;
Floh, Eny Iochevet Segal
[1]
Número total de Autores: 3
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Inst Biosci, Dept Bot, BR-05508090 Sao Paulo, SP - Brazil
Número total de Afiliações: 1
|
| Tipo de documento: | Artigo Científico |
| Fonte: | TREES-STRUCTURE AND FUNCTION; v. 34, n. 3 DEC 2019. |
| Citações Web of Science: | 0 |
| Resumo | |
Key message Analysis of polyamines and amino acid profiles in Araucaria angustifolia immature seeds from two mother tree genotypes in 2 consecutive years, and their association with the establishment of embryogenic cultures. Polyamines (PAs) and amino acids are an important source of nitrogen in plants. They are known to participate in plant development and their levels are associated with specific zygotic and somatic embryogenesis stages, which means that they may be useful as biochemical markers of developmental stages. The present study carried out an analysis of PA and amino acid profiles in immature Araucaria angustifolia seeds from two mother tree genotypes over 2 consecutive years, and their association with the initiation and maintenance of embryogenic cultures (ECs). The results showed that initiation of ECs in A. angustifolia, as observed in other conifers, depends on harvest year and mother tree genotype. PA and amino acid profiles showed that seeds from distinct mother trees and harvest years are different from one another. These differences were reflected in the initiation of ECs. The metabolic analysis indicates that conjugated Spd, ornithine, and asparagine profiles are candidates as biochemical markers for selection of mother trees. These results will allow for the testing of a large number of mother trees as explant sources and the selection of those with higher potential for somatic embryogenesis. (AU) | |
| Processo FAPESP: | 15/21075-4 - Análises fisiológicas e do S-nitroproteoma durante a embriogênese in vivo e in vitro do Pinheiro brasileiro (Araucaria angustifolia (Bertol.) Kuntze) |
| Beneficiário: | André Luiz Wendt dos Santos |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |
| Processo FAPESP: | 12/22738-9 - Metabolismo de poliaminas na embriogênese zigótica e somática de Araucaria angustifolia (Bert.) O. Kuntze |
| Beneficiário: | Leandro Francisco de Oliveira |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 16/17541-2 - Do estresse ao embrião: mecanismos moleculares e fisiológicos associados à embriogênese somática |
| Beneficiário: | Eny Iochevet Segal Floh |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 17/01284-3 - Análises fisiológicas e do S-nitroproteoma durante a embriogênese in vivo e in vitro do Pinheiro brasileiro (Araucaria angustifolia (Bertol.) Kuntze) |
| Beneficiário: | André Luiz Wendt dos Santos |
| Modalidade de apoio: | Bolsas no Brasil - Jovens Pesquisadores |
| Processo FAPESP: | 18/08215-0 - Estudo dos processos de regulação gênica pós-transcricional na embriogênese somática em Araucaria angustifolia |
| Beneficiário: | Leandro Francisco de Oliveira |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |