Abstract
Brown planthopper (BPH) is one of the most destructive insects affecting rice ( Oryza sativa L.) production. Phenylalanine ammonia-lyase (PAL) is a key enzyme involved in plant defense against pathogens, but the role of PAL in insect resistance is still poorly understood. Here we show that expression of the majority of PALs in rice is significantly induced by BPH feeding. Knockdown of Os PALs significantly reduces BPH resistance, whereas overexpression of OsPAL8 in a susceptible rice cultivar significantly enhances its BPH resistance. We found that OsPALs mediate resistance to BPH by regulating the biosynthesis and accumulation of salicylic acid and lignin. Furthermore, we show that expression of OsPAL6 and OsPAL8 in response to BPH attack is directly up-regulated by OsMYB30, an R2R3 MYB transcription factor. Taken together, our results demonstrate that the phenylpropanoid pathway plays an important role in BPH resistance response, and provide valuable targets for genetic improvement of BPH resistance in rice.
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Claims 7
Claim · model-written summary
Expression of most rice PAL genes is significantly induced by BPH feeding.
- Taxon
- rice
Oryza sativae1 - Treatment
- BPH feedinge1
- Interactor
- BPHe1pest
- Gene
- PALse1
- Outcome
- expression of the majority of PALse1
- Direction
- inducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“expression of the majority of PALs in rice is significantly induced by BPH feeding”
Claim · model-written summary
Knockdown of Os PALs significantly reduces BPH resistance in rice.
- Taxon
- riceOryza sativae0
- Treatment
- Knockdown of Os PALse2
- Interactor
- BPHe2pest
- Gene
- Os PALse2
- Outcome
- BPH resistancee2
- Direction
- reducese2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brown planthopper (BPH) is one of the most destructive insects affecting rice ( Oryza sativa L.) production”
e2“Knockdown of Os PALs significantly reduces BPH resistance”
Claim · model-written summary
Overexpression of OsPAL8 significantly enhances BPH resistance in a susceptible rice cultivar.
- Taxon
- riceOryza sativae3
- Material
- susceptible rice cultivare3
- Treatment
- overexpression of OsPAL8e3
- Interactor
- BPHe3pest
- Gene
- OsPAL8e3
- Outcome
- BPH resistancee3
- Direction
- enhancese3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“overexpression of OsPAL8 in a susceptible rice cultivar significantly enhances its BPH resistance”
Claim · model-written summary
OsPALs mediate BPH resistance in rice by regulating biosynthesis and accumulation of salicylic acid and lignin.
- Taxon
- riceOryza sativae0
- Interactor
- BPHe4pest
- Gene
- OsPALse4
- Compound
- salicylic acid and lignine4
- Outcome
- resistance to BPHe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brown planthopper (BPH) is one of the most destructive insects affecting rice ( Oryza sativa L.) production”
e4“OsPALs mediate resistance to BPH by regulating the biosynthesis and accumulation of salicylic acid and lignin”
Claim · model-written summary
OsMYB30 directly up-regulates expression of OsPAL6 and OsPAL8 in response to BPH attack in rice.
- Taxon
- riceOryza sativae0
- Treatment
- OsMYB30e5
- Interactor
- BPHe5pest
- Gene
- OsMYB30e5
- Outcome
- expression of OsPAL6 and OsPAL8e5
- Direction
- up-regulatede5
- Qualifier
- directlye5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brown planthopper (BPH) is one of the most destructive insects affecting rice ( Oryza sativa L.) production”
e5“expression of OsPAL6 and OsPAL8 in response to BPH attack is directly up-regulated by OsMYB30, an R2R3 MYB transcription factor”
Claim · model-written summary
The phenylpropanoid pathway plays an important role in BPH resistance response in rice.
- Taxon
- riceOryza sativae0
- Interactor
- BPHe6pest
- Outcome
- BPH resistance responsee6
- Qualifier
- the phenylpropanoid pathwaye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brown planthopper (BPH) is one of the most destructive insects affecting rice ( Oryza sativa L.) production”
e6“the phenylpropanoid pathway plays an important role in BPH resistance response”
Claim · model-written summary
The OsPAL and OsMYB30 findings provide targets for genetic improvement of BPH resistance in rice.
- Taxon
- riceOryza sativae7
- Outcome
- targets for genetic improvement of BPH resistancee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“provide valuable targets for genetic improvement of BPH resistance in rice”
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