Data/hora: 02/06/2024 16:34:09

Provedor de dados: | PFB - Pesquisa Florestal Brasileira
País: | Brazil

Título:

Strategies of two tropical woody species to tolerate salt stress

Estratégias para tolerar o estresse salino em duas espécies lenhosas tropicais

Autores: | Lustosa, Bruno Melo; Souza, Lígia Gomes Ferreira; Frosi, Gabriella; Falcão, Hiram Marinho; Pereira, Silvia; Oliveira, Marciel Teixeira; Santos, Mauro Guida.
Data: | 2017-03-31
Ano: | 2017
Palavras-chave: | Botany; Plant Ecophysiology Biochemical analysis; Leaf gas exchange; Leaf water potential Análises bioquímicas; Trocas gasosas foliares; Potencial hídrico foliar.
Resumo: | This study aimed to evaluate the leaf primary metabolism in two woody species, Sterculia foetida and Bombacopsis glabra. Both species have seeds rich in oil and they are largely found in regions with irregularities in water availability. Seedlings were grown in a greenhouse from seeds. At 140 days after emergence, 50% of the plants were subjected to salt stress for 23 days, daily receiving 100 mM of NaCl solution. In both species, leaf stomata conductance and water potential decreased quickly under salt stress. The two species showed different strategies in photosynthetic pigment concentration and components of nitrogen metabolism. S. foetida kept the pigment concentration unchanged after 23 days of stress, while B. glabra increased concentration of chlorophyll a and carotenoids. S. foetida showed a high leaf concentration of K+ in stressed plants and a Na+/K+ ratio without differences when compared to control. Thus, S. foetida presented a better ionic balance, while B. glabra invested in photoprotection. Therefore, both species present potential to be planted in Brazilian Northeast, where water deficit and salt stress are challenging for annual crops.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1332

10.4336/2017.pfb.37.89.1332

Editor: | Embrapa Florestas

Relação:

http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1332/558

http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/downloadSuppFile/1332/1128

http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/downloadSuppFile/1332/1129

http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/downloadSuppFile/1332/1130

http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/downloadSuppFile/1332/1131

Formato: | application/pdf

Fonte:

Pesquisa Florestal Brasileira; v. 37, n. 89 (2017): jan./mar.; 63-72

Brazilian Journal of Forestry Research; v. 37, n. 89 (2017): jan./mar.; 63-72

1983-2605

1809-3647

Fonte: | http://creativecommons.org/licenses/by-nc-nd/4.0