Emission of volatile organic compounds from petunia flowers is facilitated by an ABC transporter.
Science
; 356(6345): 1386-1388, 2017 06 30.
Article
em En
| MEDLINE
| ID: mdl-28663500
ABSTRACT
Plants synthesize a diversity of volatile molecules that are important for reproduction and defense, serve as practical products for humans, and influence atmospheric chemistry and climate. Despite progress in deciphering plant volatile biosynthesis, their release from the cell has been poorly understood. The default assumption has been that volatiles passively diffuse out of cells. By characterization of a Petunia hybrida adenosine triphosphate-binding cassette (ABC) transporter, PhABCG1, we demonstrate that passage of volatiles across the plasma membrane relies on active transport. PhABCG1 down-regulation by RNA interference results in decreased emission of volatiles, which accumulate to toxic levels in the plasma membrane. This study provides direct proof of a biologically mediated mechanism of volatile emission.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Proteínas de Plantas
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Transportadores de Cassetes de Ligação de ATP
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Petunia
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Compostos Orgânicos Voláteis
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article