Abstract
Salinity is a severe abiotic stress that affects plant growth and yield. Salinity stress activates jasmonate (JA) signaling in Arabidopsis thaliana, but the underlying molecular mechanism remains to be elucidated. In this study, we confirmed the activation of JA signaling under saline conditions and demonstrated the importance of the CORONATINE INSENSITIVE1 (COI1)-mediated signaling for this process. Phenotypic analyses reflected the negative regulation of JASMONATE ZIM-DOMAIN (JAZ) repressors during salinity stress-enhanced JA signaling. Mechanistic analyses revealed that JAZ proteins physically interact with ABSCISIC ACID-RESPONSIVE ELEMENT BINDING FACTOR1 (ABF1), AREB1/ABF2, ABF3, and AREB2/ABF4, which belong to the basic leucine zipper (bZIP) transcription factor family and respond to salinity stress. Analyses on the ABF3 overexpression plants and ABF mutants indicated the positive role of ABF3 in regulating JA signaling under saline condition. Furthermore, ABF3 overexpression partially recovered the JA-related phenotypes of JAZ1-Δ3A plants. Moreover, ABF3 was observed to indirectly activate ALLENE OXIDE SYNTHASE (AOS) transcription, but this activation was inhibited by JAZ1. In addition, ABF3 competitively bind to JAZ1, thereby decreasing the interaction between JAZ1 and MYC2, which is the master transcription factor controlling JA signaling. Collectively, our findings have clarified the regulatory effects of ABF3 on JA signaling and provide new insights into how JA signaling is enhanced following an exposure to salinity stress.
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Claims 10
Claim · model-written summary
Jasmonate signaling was activated under saline conditions in Arabidopsis.
- Taxon
- Arabidopsis
Arabidopsist1 - Treatment
- saline conditionse1
- Outcome
- activation of JA signalinge1
- Direction
- increaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“Arabidopsis”
e1“we confirmed the activation of JA signaling under saline conditions”
Claim · model-written summary
The COI1-mediated signaling is important for salinity-enhanced jasmonate signaling.
- Taxon
- ArabidopsisArabidopsist1
- Gene
- COI1e2
- Outcome
- importance of the CORONATINE INSENSITIVE1 (COI1)-mediated signalinge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“Arabidopsis”
e2“demonstrated the importance of the CORONATINE INSENSITIVE1 (COI1)-mediated signaling for this process”
Claim · model-written summary
JAZ repressors negatively regulate salinity stress-enhanced JA signaling.
- Taxon
- ArabidopsisArabidopsist1
- Gene
- JASMONATE ZIM-DOMAIN (JAZ) repressorse3
- Outcome
- negative regulatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“Arabidopsis”
e3“Phenotypic analyses reflected the negative regulation of JASMONATE ZIM-DOMAIN (JAZ) repressors during salinity stress-enhanced JA signaling”
Claim · model-written summary
JAZ proteins physically interact with ABF1, AREB1/ABF2, ABF3 and AREB2/ABF4.
- Taxon
- ArabidopsisArabidopsist1
- Gene
- JAZ proteinse4
- Outcome
- physically interacte4
- Qualifier
- AREB1/ABF2, ABF3, and AREB2/ABF4e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“Arabidopsis”
e4“JAZ proteins physically interact with ABSCISIC ACID-RESPONSIVE ELEMENT BINDING FACTOR1 (ABF1), AREB1/ABF2, ABF3, and AREB2/ABF4”
Claim · model-written summary
ABF3 overexpression plays a positive role in regulating JA signaling under saline conditions compared with ABF mutants.
- Taxon
- ArabidopsisArabidopsist1
- Treatment
- ABF3 overexpressione5
- Gene
- ABF3e5
- Outcome
- JA signalinge5
- Direction
- increaseinferrede5
- Comparator
- ABF mutantse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“Arabidopsis”
e5“Analyses on the ABF3 overexpression plants and ABF mutants indicated the positive role of ABF3 in regulating JA signaling under saline condition”
Claim · model-written summary
ABF3 overexpression partially recovered the JA-related phenotypes of JAZ1-Δ3A plants.
- Taxon
- ArabidopsisArabidopsist1
- Material
- JAZ1-Δ3A plantse6
- Treatment
- ABF3 overexpressione6
- Outcome
- JA-related phenotypese6
- Direction
- recoverede6
- Qualifier
- partiallye6
- Comparator
- JAZ1-Δ3A plantse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“Arabidopsis”
e6“ABF3 overexpression partially recovered the JA-related phenotypes of JAZ1-Δ3A plants”
Claim · model-written summary
ABF3 indirectly activates ALLENE OXIDE SYNTHASE (AOS) transcription.
- Taxon
- ArabidopsisArabidopsist1
- Gene
- ABF3e7
- Outcome
- ALLENE OXIDE SYNTHASE (AOS) transcriptione7
- Direction
- activatee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“Arabidopsis”
e7“ABF3 was observed to indirectly activate ALLENE OXIDE SYNTHASE (AOS) transcription, but this activation was inhibited by JAZ1”
Claim · model-written summary
JAZ1 inhibits the ABF3-driven activation of AOS transcription.
- Taxon
- ArabidopsisArabidopsist1
- Gene
- JAZ1e7
- Outcome
- activatione7
- Direction
- inhibitede7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“Arabidopsis”
e7“ABF3 was observed to indirectly activate ALLENE OXIDE SYNTHASE (AOS) transcription, but this activation was inhibited by JAZ1”
Claim · model-written summary
ABF3 competitively binds JAZ1.
- Taxon
- ArabidopsisArabidopsist1
- Gene
- ABF3e0
- Outcome
- competitively bind to JAZ1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“Arabidopsis”
e0“ABF3 competitively bind to JAZ1, thereby decreasing the interaction between JAZ1 and MYC2”
Claim · model-written summary
ABF3 decreases the interaction between JAZ1 and MYC2.
- Taxon
- ArabidopsisArabidopsist1
- Gene
- JAZ1e0
- Outcome
- interaction between JAZ1 and MYC2e0
- Direction
- decreasinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“Arabidopsis”
e0“ABF3 competitively bind to JAZ1, thereby decreasing the interaction between JAZ1 and MYC2”
The same questions in other papers
salinity · molecular: metabolites · ArabidopsisPositive and negative results
9 papers in the same direction as this paper · 3 in the opposite direction
- positive
- negative
- no effect
9 papers more in this group
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