Red/Far Red Light Controls Arbuscular Mycorrhizal Colonization via Jasmonic Acid and Strigolactone Signaling.
Plant Cell Physiol
; 56(11): 2100-9, 2015 Nov.
Article
en En
| MEDLINE
| ID: mdl-26412782
ABSTRACT
Establishment of a nitrogen-fixing symbiosis between legumes and rhizobia not only requires sufficient photosynthate, but also the sensing of the ratio of red to far red (R/FR) light. Here, we show that R/FR light sensing also positively influences the arbuscular mycorrhizal (AM) symbiosis of a legume and a non-legume through jasmonic acid (JA) and strigolactone (SL) signaling. The level of AM colonization in high R/FR light-grown tomato and Lotus japonicus significantly increased compared with that determined for low R/FR light-grown plants. Transcripts for JA-related genes were also elevated under high R/FR conditions. The root exudates derived from high R/FR light-grown plants contained more (+)-5-deoxystrigol, an AM-fungal hyphal branching inducer, than those from low R/FR light-grown plants. In summary, high R/FR light changes not only the levels of JA and SL synthesis, but also the composition of plant root exudates released into the rhizosphere, in this way augmenting the AM symbiosis.
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Banco de datos:
MEDLINE
Asunto principal:
Transducción de Señal
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Solanum lycopersicum
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Ciclopentanos
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Micorrizas
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Oxilipinas
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Lotus
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Lactonas
Idioma:
En
Año:
2015
Tipo del documento:
Article