Abstract
Summer maize is frequently subjected to waterlogging damage because of increased and variable rainfall during the growing season. The application of 6-benzyladenine (6-BA) can effectively mitigate the waterlogging effects on plant growth and increase the grain yield of waterlogged summer maize. However, the mechanisms underlying this process and the involvement of 6-BA in relevant signal transduction pathways remain unclear. In this study, we explored the effects of 6-BA on waterlogged summer maize using a phosphoproteomic technique to better understand the mechanism by which summer maize growth improves following waterlogging. Application of 6-BA inhibited the waterlogging-induced increase in abscisic acid (ABA) content and increased the phosphorylation levels of proteins involved in ABA signaling; accordingly, stomatal responsiveness to exogenous ABA increased. In addition, the application of 6-BA had a long-term effect on signal transduction pathways and contributed to rapid responses to subsequent stresses. Plants primed with 6-BA accumulated more ethylene and jasmonic acid in response to subsequent waterlogging; accordingly, leaf SPAD, antioxidase activity, and root traits improved by 6-BA priming. These results suggest that the effects of 6-BA on hormone signal transduction pathways are anamnestic, which enables plants to show faster or stronger defense responses to stress.
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Claims 8
Claim · model-written summary
6-BA inhibited the waterlogging-induced ABA increase.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 6-BA inhibited the waterlogging-induced increase in abscisic acid (ABA) content”
t0“summer maize”
Claim · model-written summary
6-BA increased phosphorylation of proteins in ABA signaling.
- Treatment
- 6-BAe0
- Outcome
- phosphorylation levels of proteins involved in ABA signalinge0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 6-BA inhibited the waterlogging-induced increase in abscisic acid (ABA) content and increased the phosphorylation levels of proteins involved in ABA signaling”
t0“summer maize”
Claim · model-written summary
Stomatal responsiveness to exogenous ABA increased after 6-BA application.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 6-BA inhibited the waterlogging-induced increase in abscisic acid (ABA) content and increased the phosphorylation levels of proteins involved in ABA signaling; accordingly, stomatal responsiveness to exogenous ABA increased”
t0“summer maize”
Claim · model-written summary
6-BA had a long-term effect on signal transduction pathways.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of 6-BA had a long-term effect on signal transduction pathways”
t0“summer maize”
Claim · model-written summary
6-BA priming increased ethylene accumulation after subsequent waterlogging.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants primed with 6-BA accumulated more ethylene and jasmonic acid in response to subsequent waterlogging”
t0“summer maize”
Claim · model-written summary
6-BA priming increased jasmonic acid accumulation after subsequent waterlogging.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants primed with 6-BA accumulated more ethylene and jasmonic acid in response to subsequent waterlogging”
t0“summer maize”
Claim · model-written summary
6-BA priming improved leaf SPAD, antioxidase activity, and root traits.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf SPAD, antioxidase activity, and root traits improved by 6-BA priming”
t0“summer maize”
Claim · model-written summary
The authors interpret hormonal priming as enabling faster or stronger stress defense.
- Treatment
- 6-BAe0
- Outcome
- faster or stronger defense responses to stresse0
- Qualifier
- hormone signal transduction pathwayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effects of 6-BA on hormone signal transduction pathways are anamnestic, which enables plants to show faster or stronger defense responses to stress”
t0“summer maize”
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