Data/hora: 01/06/2024 15:39:13

Provedor de dados: | 1
País: | Brazil

Título:

Activity invertase and amylase in Marandu grass under shading and nitrogen fertilization

Activity invertase and amylase in Marandu grass under shading and nitrogen fertilization

Autores: | Coura, Florence Taciana Veriato; Fries, Daniela Deitos; Quoos, Rodrigo Diego; Teixeira, Fábio Andrade; Pires, Aureliano José Viera; Figueiredo, Abdias José de.
Data: | 2020-04-03
Ano: | 2020
Palavras-chave: | Carbohydrates; Invertases; Photosynthesis. carbohydrates invertases photosynthesis.
Resumo: | The objective of this study was to evaluate the activity of invertases and amylases in Brachiaria brizantha cv. Marandu under various shade and nitrogen fertilization conditions. The experiment was carried out in a greenhouse using a 4 x 2 factorial scheme (shading levels of 0, 30, 50, and 80% and fertilization with 0 and 100 kg N ha-1). The activity of the enzymes, cytosol-neutral invertase (Inv-N), vacuole acid (Inv-V) and cell-acidic acid (Inv-CW), reducing sugars (RS), and α and β-amylases were evaluated (α = 0.05). The interaction was significant for Inv-N within the leaf. In the first cycle, the highest activity was in fertilized plants with 30, 50, and 80% shading. For Inv-CW in the 1st cycle, the highest activity occurred with 0, 30, and 50% shading. However, the interaction for Inv-V leaf activity was not significant in the 1st and 2nd cycles. The highest activity observed for Inv-V was in the fertilized plants, suggesting that fertilization increased the enzymatic activity. The activity of the invertases increased both under 30-50% shaded conditions and in full sun. Furthermore, invertase activity was directly linked to the osmoregulatory system. The reduction in RS was related to a low photosynthetic rate, and an increase α and β-amylase was associated with the use of reserve energy sources to meet energetic needs.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42496

10.4025/actasciagron.v42i1.42496

Editor: | Universidade Estadual de Maringá
Relação: | http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42496/751375149829
Formato: | application/pdf

Fonte:

Acta Scientiarum. Agronomy; Vol 42 (2020): Publicação contínua; e42496

Acta Scientiarum. Agronomy; v. 42 (2020): Publicação contínua; e42496

1807-8621

1679-9275

Fonte:

Copyright (c) 2020 Acta Scientiarum. Agronomy

https://creativecommons.org/licenses/by-nc-nd/4.0