Abstract
Green leaf volatiles (GLVs) play pivotal roles in plant anti-herbivore defense. This study investigated whether the rice 13-lipoxygense gene OsRCI-1 is involved in GLV production and plant defense in rice. The overexpression of OsRCI-1 (oeRCI lines) in rice resulted in increased wound-induced levels of two prominent GLVs, cis-3-hexen-1-ol and cis-3-hexenal. In a previous study, we found that the overexpression of OsRCI-1 reduced the colonization by the rice brown planthopper (BPH, Nilaparvata lugens) but increased the attractiveness to the egg parasitoid Anagrus nilaparvatae compared to wild-type (WT) plants. This study found that when cis-3-hexen-1-ol, but not cis-3-hexenal, was added to WT plants, it could change the BPH’s colonization preference, i.e., more BPHs preferred to colonize the oeRCI lines. The exogenous application of cis-3-hexen-1-ol or cis-3-hexenal to BPH-infested WT plants could weaken or overturn the preference of A. nilaparvatae for oeRCI lines. However, field experiments revealed that only cis-3-hexenal was attractive to the parasitoid and increased the parasitism rates of BPH eggs. These results indicate that OsRCI-1 is involved in rice GLV production and therefore modulates both direct and indirect defense in rice.
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Claims 10
Claim · model-written summary
OsRCI-1 overexpression increased wound-induced cis-3-hexen-1-ol in rice.
- Taxon
- rice
Oryza sativae0 - Material
- oeRCI linese0
- Treatment
- overexpression of OsRCI-1e0
- Gene
- OsRCI-1e0
- Outcome
- wound-induced levels of two prominent GLVs, cis-3-hexen-1-ole0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The overexpression of OsRCI-1 (oeRCI lines) in rice resulted in increased wound-induced levels of two prominent GLVs, cis-3-hexen-1-ol and cis-3-hexenal”
Claim · model-written summary
OsRCI-1 overexpression increased wound-induced cis-3-hexenal in rice.
- Taxon
- riceOryza sativae0
- Treatment
- overexpression of OsRCI-1e0
- Gene
- OsRCI-1e0
- Outcome
- cis-3-hexenale0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The overexpression of OsRCI-1 (oeRCI lines) in rice resulted in increased wound-induced levels of two prominent GLVs, cis-3-hexen-1-ol and cis-3-hexenal”
Claim · model-written summary
A previous study found reduced brown planthopper colonization on OsRCI-1 overexpressing rice relative to wild type.
- Taxon
- riceOryza sativae0
- Treatment
- overexpression of OsRCI-1e0
- Interactor
- Nilaparvata lugens
Nilaparvata lugense0pest - Gene
- OsRCI-1e0
- Outcome
- colonization by the rice brown planthoppere0
- Direction
- reducede0
- Comparator
- wild-type (WT) plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“overexpression of OsRCI-1 reduced the colonization by the rice brown planthopper (BPH, Nilaparvata lugens) but increased the attractiveness to the egg parasitoid Anagrus nilaparvatae compared to wild-type (WT) plants”
Claim · model-written summary
A previous study found increased attractiveness of OsRCI-1 overexpressing rice to Anagrus nilaparvatae relative to wild type.
- Taxon
- riceOryza sativae0
- Treatment
- overexpression of OsRCI-1e0
- Interactor
- Anagrus nilaparvataeAnagrus nilaparvataee0other
- Outcome
- attractiveness to the egg parasitoid Anagrus nilaparvataee0
- Direction
- increasede0
- Comparator
- wild-type (WT) plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“overexpression of OsRCI-1 reduced the colonization by the rice brown planthopper (BPH, Nilaparvata lugens) but increased the attractiveness to the egg parasitoid Anagrus nilaparvatae compared to wild-type (WT) plants”
Claim · model-written summary
Applying cis-3-hexen-1-ol to wild-type rice changed brown planthopper preference toward oeRCI lines.
- Taxon
- RiceOryza sativat0
- Treatment
- cis-3-hexen-1-ole0
- Interactor
- BPHe0pest
- Outcome
- BPH’s colonization preferencee0
- Direction
- moree0
- Comparator
- WT plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when cis-3-hexen-1-ol, but not cis-3-hexenal, was added to WT plants, it could change the BPH’s colonization preference, i.e., more BPHs preferred to colonize the oeRCI lines”
t0“Rice”
Claim · model-written summary
Applying cis-3-hexenal to wild-type rice did not change brown planthopper colonization preference.
- Taxon
- RiceOryza sativat0
- Treatment
- cis-3-hexenale0
- Interactor
- BPHe0pest
- Outcome
- BPH’s colonization preferencee0
- Comparator
- WT plantse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when cis-3-hexen-1-ol, but not cis-3-hexenal, was added to WT plants, it could change the BPH’s colonization preference”
t0“Rice”
Claim · model-written summary
Applying cis-3-hexen-1-ol to infested wild-type rice weakened or overturned parasitoid preference for oeRCI lines.
- Taxon
- RiceOryza sativat0
- Treatment
- cis-3-hexen-1-ole0
- Interactor
- A. nilaparvataeAnagrus nilaparvataee0other
- Second interactor
- BPHe0pest
- Outcome
- preference of A. nilaparvatae for oeRCI linese0
- Direction
- weaken or overturne0
- Comparator
- oeRCI linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous application of cis-3-hexen-1-ol or cis-3-hexenal to BPH-infested WT plants could weaken or overturn the preference of A. nilaparvatae for oeRCI lines”
t0“Rice”
Claim · model-written summary
Applying cis-3-hexenal to infested wild-type rice weakened or overturned parasitoid preference for oeRCI lines.
- Taxon
- RiceOryza sativat0
- Treatment
- cis-3-hexenale0
- Interactor
- A. nilaparvataeAnagrus nilaparvataee0other
- Second interactor
- BPHe0pest
- Outcome
- preference of A. nilaparvatae for oeRCI linese0
- Direction
- weaken or overturne0
- Comparator
- oeRCI linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous application of cis-3-hexen-1-ol or cis-3-hexenal to BPH-infested WT plants could weaken or overturn the preference of A. nilaparvatae for oeRCI lines”
t0“Rice”
Claim · model-written summary
In field experiments, cis-3-hexenal attracted the parasitoid.
- Taxon
- RiceOryza sativat0
- Treatment
- cis-3-hexenale0
- Interactor
- parasitoide0other
- Outcome
- attractive to the parasitoide0
- Setting
- field experimentse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field experiments revealed that only cis-3-hexenal was attractive to the parasitoid”
t0“Rice”
Claim · model-written summary
In field experiments, cis-3-hexenal increased parasitism of brown planthopper eggs.
- Taxon
- RiceOryza sativat0
- Treatment
- cis-3-hexenale0
- Interactor
- BPHe0pest
- Second interactor
- parasitoide0other
- Outcome
- parasitism rates of BPH eggse0
- Direction
- increasede0
- Setting
- field experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field experiments revealed that only cis-3-hexenal was attractive to the parasitoid and increased the parasitism rates of BPH eggs”
t0“Rice”