The ethylene signal mediates induction of GmATG8i in soybean plants under starvation stress.
Biosci Biotechnol Biochem
; 75(7): 1408-12, 2011.
Article
en En
| MEDLINE
| ID: mdl-21737912
ABSTRACT
In higher plants, autophagy-related genes (ATGs) appear to play important roles in development, senescence, and starvation responses. Hormone signals underlying starvation-induced gene expression are involved in the expression of ATGs. An effect of starvation stress on the expression of ATGs and ethylene-related genes in young seedlings of soybean (Glycine max [L.] Merr. cv. Fukuyutaka) was analyzed. Reverse transcription-polymerase chain reaction (RT-PCR) showed that the expression levels of GmATG8i and GmATG4 increase in a starvation medium, but at a null or marginal level in a sucrose/nitrate-rich medium. The expression of GmACC synthase and GmERF are also upregulated in the starvation medium. In addition, immunoblot revealed that ethylene insensitive 3 (Ein3), an ethylene-induced transcription factor are accumulated in seedlings subjected to severe starvation stress. These results indicate that starvation stress stimulates the expression of GmATG8i and ethylene signal-related genes. Since the ethylene signal is involved in senescence and various environmental stresses, it is possible that starvation stress-induced autophagy is partly mediated by the ethylene signaling.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Glycine max
/
Autofagia
/
Estrés Fisiológico
/
Factores de Transcripción
/
Proteínas Nucleares
/
Proteínas de Arabidopsis
/
Etilenos
Idioma:
En
Revista:
Biosci Biotechnol Biochem
Asunto de la revista:
BIOQUIMICA
/
BIOTECNOLOGIA
Año:
2011
Tipo del documento:
Article
País de afiliación:
Japón