Abstract
The pathway mediated by jasmonic acid (JA), biosynthesized via 13-lipoxygenases (LOX), plays a central role in both plant development and defense. In rice, there are at least fourteen 13-LOXs. Yet, only two 13-LOXs have been known to be involved in the biosynthesis of JA and plant defenses in rice. Here we cloned a chloroplast-localized 13-LOX gene from rice, OsRCI-1, whose transcripts were upregulated following infestation by brown planthopper (BPH, Nilaparvata lugens), one of the most important pests in rice. Overexpression of OsRCI-1 (oeRCI lines) increased levels of BPH-induced JA, jasmonate-isoleucine, trypsin protease inhibitors and three volatile compounds, 2-heptanone, 2-heptanol and α-thujene. BPHs showed a decreased colonization, fecundity and mass, and developed slowly on oeRCI plants compared with wild-type (WT) plants. Moreover, BPH-infested oeRCI plants were more attractive to the egg parasitoid of BPH, Anagrus nilaparvatae than equally treated WT plants. The decreased attractiveness to BPH and enhanced attractiveness to the parasitoid of oeRCI plants correlated with higher levels of BPH-induced 2-heptanone and 2-heptanol, and 2-heptanone, respectively. Compared with oeRCI plants, WT plants had higher plant height and 1000-grain weight. These results indicate that OsRCI-1 is involved in herbivore-induced JA bursts and plays a role in plant defense and growth.
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Claims 8
Claim · model-written summary
Overexpression of OsRCI-1 increased herbivore-induced JA, jasmonate-isoleucine and trypsin protease inhibitors in rice.
- Taxon
- rice
Oryza sativae1 - Material
- oeRCI linese2
- Treatment
- Overexpression of OsRCI-1e2
- Interactor
- BPHe2pest
- Gene
- OsRCI-1e2
- Outcome
- BPH-induced JA, jasmonate-isoleucine, trypsin protease inhibitorse2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In rice, there are at least fourteen 13-LOXs”
e2“Overexpression of OsRCI-1 (oeRCI lines) increased levels of BPH-induced JA, jasmonate-isoleucine, trypsin protease inhibitors and three volatile compounds, 2-heptanone, 2-heptanol and α-thujene”
Claim · model-written summary
Overexpression of OsRCI-1 increased three herbivore-induced volatile compounds (2-heptanone, 2-heptanol and α-thujene) in rice.
- Taxon
- riceOryza sativae1
- Material
- oeRCI linese2
- Treatment
- Overexpression of OsRCI-1e2
- Interactor
- BPHe2pest
- Gene
- OsRCI-1e2
- Outcome
- three volatile compounds, 2-heptanone, 2-heptanol and α-thujenee2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In rice, there are at least fourteen 13-LOXs”
e2“Overexpression of OsRCI-1 (oeRCI lines) increased levels of BPH-induced JA, jasmonate-isoleucine, trypsin protease inhibitors and three volatile compounds, 2-heptanone, 2-heptanol and α-thujene”
Claim · model-written summary
BPH colonization, fecundity and mass decreased on oeRCI plants compared with wild-type plants.
- Taxon
- riceOryza sativae1
- Treatment
- Overexpression of OsRCI-1e2
- Interactor
- BPHse3pest
- Outcome
- colonization, fecundity and masse3
- Direction
- decreasede3
- Comparator
- wild-type (WT) plantse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In rice, there are at least fourteen 13-LOXs”
e2“Overexpression of OsRCI-1 (oeRCI lines) increased levels of BPH-induced JA, jasmonate-isoleucine, trypsin protease inhibitors and three volatile compounds, 2-heptanone, 2-heptanol and α-thujene”
e3“BPHs showed a decreased colonization, fecundity and mass, and developed slowly on oeRCI plants compared with wild-type (WT) plants”
Claim · model-written summary
BPH developed more slowly on oeRCI plants than on wild-type plants.
- Taxon
- riceOryza sativae1
- Treatment
- Overexpression of OsRCI-1e2
- Interactor
- BPHse3pest
- Outcome
- developed slowlye3
- Direction
- decreaseinferrede3
- Comparator
- wild-type (WT) plantse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In rice, there are at least fourteen 13-LOXs”
e2“Overexpression of OsRCI-1 (oeRCI lines) increased levels of BPH-induced JA, jasmonate-isoleucine, trypsin protease inhibitors and three volatile compounds, 2-heptanone, 2-heptanol and α-thujene”
e3“BPHs showed a decreased colonization, fecundity and mass, and developed slowly on oeRCI plants compared with wild-type (WT) plants”
Claim · model-written summary
BPH-infested oeRCI plants were more attractive to the egg parasitoid Anagrus nilaparvatae than equally treated wild-type plants.
- Taxon
- riceOryza sativae1
- Treatment
- BPH-infested oeRCI plantse4
- Interactor
- Anagrus nilaparvataeAnagrus nilaparvataee4biocontrol_agent
- Second interactor
- BPHe4pest
- Outcome
- attractive to the egg parasitoide4
- Direction
- more attractivee4
- Comparator
- equally treated WT plantse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In rice, there are at least fourteen 13-LOXs”
e4“Moreover, BPH-infested oeRCI plants were more attractive to the egg parasitoid of BPH, Anagrus nilaparvatae than equally treated WT plants”
Claim · model-written summary
Decreased attractiveness of oeRCI plants to BPH correlated with higher BPH-induced 2-heptanone and 2-heptanol.
- Taxon
- riceOryza sativae1
- Interactor
- BPHe5pest
- Compound
- 2-heptanone and 2-heptanole5
- Outcome
- attractiveness to BPHe5
- Direction
- decreasede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In rice, there are at least fourteen 13-LOXs”
e5“The decreased attractiveness to BPH and enhanced attractiveness to the parasitoid of oeRCI plants correlated with higher levels of BPH-induced 2-heptanone and 2-heptanol, and 2-heptanone, respectively”
Claim · model-written summary
Enhanced attractiveness of oeRCI plants to the parasitoid correlated with higher BPH-induced 2-heptanone.
- Taxon
- riceOryza sativae1
- Interactor
- Anagrus nilaparvataeAnagrus nilaparvataee4biocontrol_agent
- Compound
- 2-heptanonee5
- Outcome
- attractiveness to the parasitoide5
- Direction
- enhancede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In rice, there are at least fourteen 13-LOXs”
e4“Moreover, BPH-infested oeRCI plants were more attractive to the egg parasitoid of BPH, Anagrus nilaparvatae than equally treated WT plants”
e5“The decreased attractiveness to BPH and enhanced attractiveness to the parasitoid of oeRCI plants correlated with higher levels of BPH-induced 2-heptanone and 2-heptanol, and 2-heptanone, respectively”
Claim · model-written summary
Wild-type rice had higher plant height and 1000-grain weight than oeRCI plants.
- Taxon
- riceOryza sativae1
- Material
- WT plantse6
- Outcome
- plant height and 1000-grain weighte6
- Direction
- highere6
- Comparator
- oeRCI plantse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In rice, there are at least fourteen 13-LOXs”
e6“Compared with oeRCI plants, WT plants had higher plant height and 1000-grain weight”