Cold stress affects H+-ATPase and phospholipase D activity in Arabidopsis.
Plant Physiol Biochem
; 108: 328-336, 2016 Nov.
Article
em En
| MEDLINE
| ID: mdl-27497302
ABSTRACT
Low temperature is an environmental stress that greatly influences plant performance and distribution. Plants exposed to cold stress exhibit modifications of plasma membrane physical properties that can affect their functionality. Here it is reported the effect of low temperature exposure of Arabidopsis plants on the activity of phospholipase D and H+-ATPase, the master enzyme located at the plasma membrane. The H+-ATPase activity was differently affected, depending on the length of cold stress imposed. In particular, an exposure to 4 °C for 6 h determined the strong inhibition of the H+-ATPase activity, that correlates with a reduced association with the regulatory 14-3-3 proteins. A longer exposure first caused the full recovery of the enzymatic activity followed by a significant activation, in accordance with both the increased association with 14-3-3 proteins and induction of H+-ATPase gene transcription. Different time lengths of cold stress treatment were also shown to strongly stimulate the phospholipase D activity and affect the phosphatidic acid levels of the plasma membranes. Our results suggest a functional correlation between the activity of phospholipase D and H+-ATPase mediated by phosphatidic acid release during the cold stress response.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fosfolipase D
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Arabidopsis
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ATPases Translocadoras de Prótons
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Proteínas de Arabidopsis
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Resposta ao Choque Frio
Idioma:
En
Revista:
Plant Physiol Biochem
Assunto da revista:
BIOQUIMICA
/
BOTANICA
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Itália