Mechanisms of Arbuscular Mycorrhizal Fungi Increasing Silicon Uptake by Rice.
J Agric Food Chem
; 72(30): 16603-16613, 2024 Jul 31.
Article
en En
| MEDLINE
| ID: mdl-38943592
ABSTRACT
Arbuscular mycorrhizal fungi (AMF) influence silicon (Si) uptake by plants, but the mechanisms remain unclear. This study investigated the mechanisms of AMF-mediated Si uptake by rice, a model Si-accumulating plant, and explored the tripartite interactions among AMF, Si, and phosphorus (P). AMF inoculation increased shoot Si content by 97% when supplied with silicic acid and by 29% with calcium silicate and upregulated expression of Si transporters Lsi1 and Lsi2 in roots. Supplying Si only to AMF hyphae increased the root Si content by 113%, indicating direct Si uptake by hyphae. Mechanisms of AMF-induced Si uptake were elucidated 1) direct Si uptake by hyphae, 2) increased silicate dissolution, and 3) upregulation of Si transporters. Silicon application also increased AMF colonization by 28%, and the absence of interactions was observed on P uptake. Altogether, AMF support Si acquisition and Si fosters AMF colonization in rice, whereas the P uptake depends more on AMF than on Si.
Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Proteínas de Plantas
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Oryza
/
Silicio
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Raíces de Plantas
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Micorrizas
Idioma:
En
Revista:
J Agric Food Chem
Año:
2024
Tipo del documento:
Article
País de afiliación:
China