Abstract
Mitogen-activated protein kinases (MPKs) play a central role not only in plant growth and development, but also in plant responses to abiotic and biotic stresses, including pathogens. Yet, their role in herbivore-induced plant defenses and their underlying mechanisms remain largely unknown. Here, we cloned a rice MPK gene, OsMPK4, whose expression was induced by mechanical wounding, infestation of the striped stem borer (SSB) Chilo suppressalis, and treatment with jasmonic acid (JA), but not by treatment with salicylic acid (SA). The overexpression of OsMPK4 (oe-MPK4) enhanced constitutive and/or SSB-induced levels of JA, jasmonoyl-l-isoleucine (JA-Ile), ethylene (ET), and SA, as well as the activity of elicited trypsin proteinase inhibitors (TrypPIs), and reduced SSB performance. On the other hand, compared to wild-type plants, oe-MPK4 lines in the greenhouse showed growth retardation. These findings suggest that OsMPK4, by regulating JA-, ET-, and SA-mediated signaling pathways, functions as a positive regulator of rice resistance to the SSB and a negative regulator of rice growth.
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Claims 8
Claim · model-written summary
Wounding induced rice OsMPK4 expression.
- Taxon
- Rice
Oryza sativat0 - Treatment
- mechanical woundinge0
- Gene
- OsMPK4e0
- Outcome
- expressione0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OsMPK4, whose expression was induced by mechanical wounding, infestation of the striped stem borer (SSB) Chilo suppressalis, and treatment with jasmonic acid (JA), but not by treatment with salicylic acid (SA)”
t0“Rice”
Claim · model-written summary
Chilo suppressalis infestation induced rice OsMPK4 expression.
- Taxon
- RiceOryza sativat0
- Treatment
- infestation of the striped stem borer (SSB) Chilo suppressalise0
- Interactor
- Chilo suppressalis
.jpg?width=60)
Chilo suppressalise0pest - Gene
- OsMPK4e0
- Outcome
- expressione0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“OsMPK4, whose expression was induced by mechanical wounding, infestation of the striped stem borer (SSB) Chilo suppressalis, and treatment with jasmonic acid (JA), but not by treatment with salicylic acid (SA)”
t0“Rice”
Claim · model-written summary
Jasmonic acid induced rice OsMPK4 expression.
- Taxon
- RiceOryza sativat0
- Treatment
- jasmonic acid (JA)e0
- Gene
- OsMPK4e0
- Outcome
- expressione0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OsMPK4, whose expression was induced by mechanical wounding, infestation of the striped stem borer (SSB) Chilo suppressalis, and treatment with jasmonic acid (JA), but not by treatment with salicylic acid (SA)”
t0“Rice”
Claim · model-written summary
Salicylic acid did not induce rice OsMPK4 expression.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OsMPK4, whose expression was induced by mechanical wounding, infestation of the striped stem borer (SSB) Chilo suppressalis, and treatment with jasmonic acid (JA), but not by treatment with salicylic acid (SA)”
t0“Rice”
Claim · model-written summary
OsMPK4 overexpression increased JA, JA-Ile, ethylene, and SA levels.
- Taxon
- RiceOryza sativat0
- Treatment
- overexpression of OsMPK4 (oe-MPK4)e0
- Gene
- OsMPK4e0
- Outcome
- levels of JA, jasmonoyl-l-isoleucine (JA-Ile), ethylene (ET), and SAe0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The overexpression of OsMPK4 (oe-MPK4) enhanced constitutive and/or SSB-induced levels of JA, jasmonoyl-l-isoleucine (JA-Ile), ethylene (ET), and SA”
t0“Rice”
Claim · model-written summary
OsMPK4 overexpression enhanced elicited TrypPI activity.
- Taxon
- RiceOryza sativat0
- Gene
- trypsin proteinase inhibitors (TrypPIs)e0
- Outcome
- activitye0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“as well as the activity of elicited trypsin proteinase inhibitors (TrypPIs), and reduced SSB performance”
t0“Rice”
Claim · model-written summary
OsMPK4 overexpression reduced stem borer performance.
- Taxon
- RiceOryza sativat0
- Treatment
- overexpression of OsMPK4 (oe-MPK4)e0
- Interactor
- SSBe0pest
- Outcome
- SSB performancee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The overexpression of OsMPK4 (oe-MPK4) enhanced constitutive and/or SSB-induced levels of JA, jasmonoyl-l-isoleucine (JA-Ile), ethylene (ET), and SA, as well as the activity of elicited trypsin proteinase inhibitors (TrypPIs), and reduced SSB performance”
t0“Rice”
Claim · model-written summary
OsMPK4 overexpression caused rice growth retardation in the greenhouse versus wild type.
- Taxon
- RiceOryza sativat0
- Material
- oe-MPK4 linese0
- Outcome
- growth retardatione0
- Direction
- retardatione0
- Comparator
- wild-type plantse0
- Setting
- greenhousee0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared to wild-type plants, oe-MPK4 lines in the greenhouse showed growth retardation”
t0“Rice”
The same questions in other papers
salicylic acid · molecular: expression · Oryza sativa (rice)Positive and negative results
2 papers in the same direction as this paper · 28 in the opposite direction
- positive
- positive
- positive
27 papers more in this group
See all 31 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.