The origins and mechanisms of karrikin signalling.
Curr Opin Plant Biol
; 16(5): 667-73, 2013 Oct.
Article
em En
| MEDLINE
| ID: mdl-23954000
ABSTRACT
Karrikins are butenolides in smoke and char that stimulate seed germination. Karrikin action in Arabidopsis requires the F-box protein MAX2 and the α/ß-hydrolase KAI2, a paralogue of D14 that is required for perception of strigolactones (SL). SL response involves hydrolysis by D14, whereas karrikins bind to KAI2 without apparent hydrolysis. We discuss the current understanding of the mechanisms of karrikin perception and response. The usual function of KAI2 is unclear, but we hypothesise that the similarity between karrikins and the endogenous ligand for KAI2 made adaptation of some plants to karrikins possible.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Transdução de Sinais
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Arabidopsis
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Proteínas de Arabidopsis
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Hidrolases
Idioma:
En
Revista:
Curr Opin Plant Biol
Assunto da revista:
BOTANICA
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Austrália