Data/hora: 01/06/2024 18:27:45

Biblioteca(s): | Embrapa Amazônia Oriental.
Data corrente: | 23/10/2020
Data da última atualização: | 10/08/2022
Autoria: | SANTOS, C. M. P. P. dos; HUTHER, C. M.; BORELLA, J.; RIBEIRO, F. N. S.; DUARTE, G. C. A.; CARVALHO, L. F. de; OLIVEIRA, E. de; LAMEIRA, O. A.; PINHO, C. F. de; MACHADO, T. de B.; PEREIRA, C. R.
Afiliação: | CAÍSSA MACHADO PERUCCI PEREIRA DOS SANTOS, UFF; CRISTINA MOLL HUTHER, UFF; JUNIOR BORELLA, FURG; FERNANDA NAIARA SANTOS RIBEIRO, UFLA; GLAUCE CHRISTIAN ALVES DUARTE, UFF; LUIZA FERREIRA DE CARVALHO, UFF; ELTON DE OLIVEIRA, UFF; OSMAR ALVES LAMEIRA, CPATU; CAMILA FERREIRA DE PINHO, UFRRJ; THELMA DE BARROS MACHADO, UFF; CARLOS RODRIGUES PEREIRA, UFF.
Título: | Season and shading affect emetine and cephalin production in Carapichea ipecacuanha plants.
Ano de publicação: | 2022
Fonte/Imprenta: | Plant Biosystems, v. 156, n. 1, p. 51-60, 2022.
DOI: | 10.1080/11263504.2020.1832602
Idioma: | Inglês
Notas: | Published online: 16 Oct 2020.
Conteúdo: | Ipecacuanha [Carapichea ipecacuanha) (Brot) L. Andersson] has a high commercial value due to the presence of emetine and cephalin in its roots, which can be enhanced by different levels of light intensity. This study aimed to study the physiological response of ipecacuanha plants under different shading levels (50, 70, and 90%) in all seasons. Plants were cultivated in a greenhouse with sombriteVR (shading) for 395 days, in beds containing sandy soil, after which we evaluated chlorophyll (Chl) a fluorescence, photosynthetic pigments and emetine and cephalin. Chl a fluorescence was higher in plants under 50% shading in all seasons while plants under 90% shading showed increases in Chl a fluorescence in the summer. The changes in Chl a fluorescence under 50% shading reveal difficulties in adaptation to high light levels, since high light intensity causes disorders in the dynamic dissipation of photosynthetic energy, and a decrease in photosynthetic pigments. The highest content of cephalin was recorded in winter under 70% shading, whereas for emetine it was recorded in spring, under 90% shading. Autumn (70% shading) was the only season in which the amount of both emetine and cephalin was similar. Therefore, both the season and the shading level affect ipecacuanha metabolism.
Thesagro: | Ipecacuanha.
Thesaurus Nal: | Alkaloids; Carapichea ipecacuanha; Chlorophyll; Fluorescence; Medicinal plants.
Categoria do assunto: | A Sistemas de Cultivo
Registro original: | Embrapa Amazônia Oriental (CPATU)
Exemplares: | CPATU - (56583-1) - UPC - AP - DD -  -  -  - DIS