Plants transfer lipids to sustain colonization by mutualistic mycorrhizal and parasitic fungi.
Science
; 356(6343): 1172-1175, 2017 06 16.
Article
en En
| MEDLINE
| ID: mdl-28596307
ABSTRACT
Arbuscular mycorrhizal (AM) fungi facilitate plant uptake of mineral nutrients and draw organic nutrients from the plant. Organic nutrients are thought to be supplied primarily in the form of sugars. Here we show that the AM fungus Rhizophagus irregularis is a fatty acid auxotroph and that fatty acids synthesized in the host plants are transferred to the fungus to sustain mycorrhizal colonization. The transfer is dependent on RAM2 (REQUIRED FOR ARBUSCULAR MYCORRHIZATION 2) and the ATP binding cassette transporter-mediated plant lipid export pathway. We further show that plant fatty acids can be transferred to the pathogenic fungus Golovinomyces cichoracerum and are required for colonization by pathogens. We suggest that the mutualistic mycorrhizal and pathogenic fungi similarly recruit the fatty acid biosynthesis program to facilitate host invasion.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Proteínas de Plantas
/
Ascomicetos
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Simbiosis
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Raíces de Plantas
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Micorrizas
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Glomeromycota
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Ácidos Grasos
Idioma:
En
Revista:
Science
Año:
2017
Tipo del documento:
Article
País de afiliación:
China