Chill-induced changes in fatty acid composition of tonoplast vesicles from hypocotyls of Vigna unguiculata (L.) Walp.

Brazilian Journal Of Plant Physiology

Endereço:
Campos dos Goytacazes, RJ
Rio de Janeiro / RJ
Site: http://www.scielo.br/scielo.php?script=sci_serial&pid=1677-0420&lng=en&nrm=iso
Telefone: (22) 2739-7178
ISSN: 16770420
Editor Chefe: Arnoldo R. Façanha
Início Publicação: 31/01/1989
Periodicidade: Trimestral
Área de Estudo: Botânica

Chill-induced changes in fatty acid composition of tonoplast vesicles from hypocotyls of Vigna unguiculata (L.) Walp.

Ano: 2010 | Volume: 22 | Número: 1
Autores: Luciana M. N. de Oliveira, Alana C. de M. Sobreira, Fernando de P. Monteiro, Dirce F. de Melo
Autor Correspondente: Luciana MN de Oliveira | [email protected]

Palavras-chave: chilling, cowpea, lipid, fatty acids, membrane, vacuole

Resumos Cadastrados

Resumo Inglês:

The present study was undertaken to investigate the changes induced by chilling on fatty acid composition of tonoplast vesicles
from hypocotyls of Vigna unguiculata (L.) Walp. The 7 day-old control seedlings were grown at 25°C while treated seedlings were
submitted to low temperatures (10°C and 4°C) for 4 days after 3 days germination. The chilling stress resulted in a differential
inhibition of plant growth at 10°C and 4°C. Following chilling at 10°C and 4°C, the rate of unsaturated to saturated fatty acids
increased under chilling stress. Our results suggest that the increase of unsaturated fatty acids content as well as the higher rate
unsaturated/saturate fatty acids might be used by V. unguiculata plants as an adaptation mechanism likely to maintain the vacuolar
membrane fluidity under low temperatures.