Coevolving MAPK and PID phosphosites indicate an ancient environmental control of PIN auxin transporters in land plants.
FEBS Lett
; 592(1): 89-102, 2018 01.
Article
em En
| MEDLINE
| ID: mdl-29197077
ABSTRACT
Plant growth flexibly adapts to environmental conditions, implying cross-talk between environmental signalling and developmental regulation. Here, we show that the PIN auxin efflux carrier family possesses three highly conserved putative mitogen-activated protein kinase (MAPK) sites adjacent to the phosphorylation sites of the well-characterised AGC kinase PINOID, which regulates the polar localisation of PINs and directional auxin transport, thereby underpinning organ growth. The conserved sites of PIN1 are phosphorylated in vitro by two environmentally activated MAPKs, MPK4 and MPK6. In contrast to AGC kinases, MAPK-mediated phosphorylation of PIN1 at adjacent sites leads to a partial loss of the plasma membrane localisation of PIN1. MAPK-mediated modulation of PIN trafficking may participate in environmental adjustment of plant growth.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas de Plantas
/
Proteínas Serina-Treonina Quinases
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Evolução Molecular
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Proteínas Quinases Ativadas por Mitógeno
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Ácidos Indolacéticos
Idioma:
En
Revista:
FEBS Lett
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Hungria