Salicylic acid and ethylene coordinately promote leaf senescence.
J Integr Plant Biol
; 63(5): 823-827, 2021 May.
Article
in En
| MEDLINE
| ID: mdl-33501782
ABSTRACT
Leaf senescence is an intrinsic biological process of plants. The phytohormones salicylic acid (SA) and ethylene (ET) are known to promote senescence. However, their relationship in this process is still unclear. We found that EIN3 and EIL1, two key transcription factors in ET signaling, are required for SA-induced leaf senescence in Arabidopsis. Furthermore, ET enhances the effect of SA in promoting senescence. Biochemical studies revealed that NPR1, the master regulator of SA signaling, interacts with EIN3 to promote its transcriptional activity. Our study suggests that SA and ET function coordinately in senescence, which is in contrast to their antagonistic crosstalk in other biological processes.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Salicylic Acid
/
Arabidopsis Proteins
/
Ethylenes
Language:
En
Journal:
J Integr Plant Biol
Year:
2021
Document type:
Article
Affiliation country:
China